WO2011024335A1 - 可変動弁装置及びそれを備えたエンジン並びに鞍乗型車両 - Google Patents
可変動弁装置及びそれを備えたエンジン並びに鞍乗型車両 Download PDFInfo
- Publication number
- WO2011024335A1 WO2011024335A1 PCT/JP2010/001709 JP2010001709W WO2011024335A1 WO 2011024335 A1 WO2011024335 A1 WO 2011024335A1 JP 2010001709 W JP2010001709 W JP 2010001709W WO 2011024335 A1 WO2011024335 A1 WO 2011024335A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- actuator
- variable valve
- engine
- piece
- valve device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L13/0015—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque
- F01L13/0036—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for optimising engine performances by modifying valve lift according to various working parameters, e.g. rotational speed, load, torque the valves being driven by two or more cams with different shape, size or timing or a single cam profiled in axial and radial direction
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K11/00—Motorcycles, engine-assisted cycles or motor scooters with one or two wheels
- B62K11/02—Frames
- B62K11/04—Frames characterised by the engine being between front and rear wheels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/12—Transmitting gear between valve drive and valve
- F01L1/18—Rocking arms or levers
- F01L1/181—Centre pivot rocking arms
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
- F01L1/267—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder with means for varying the timing or the lift of the valves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
- B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
- B62K2202/00—Motorised scooters
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
- F01L1/02—Valve drive
- F01L1/04—Valve drive by means of cams, camshafts, cam discs, eccentrics or the like
- F01L1/047—Camshafts
- F01L1/053—Camshafts overhead type
- F01L2001/0535—Single overhead camshafts [SOHC]
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
- F01L2013/10—Auxiliary actuators for variable valve timing
- F01L2013/103—Electric motors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
- F01L2305/00—Valve arrangements comprising rollers
Definitions
- the present invention relates to a variable valve system for controlling the opening and closing of a valve in an internal combustion engine provided with a valve, an engine provided with the same, and a straddle-type vehicle provided with the same, and in particular, a technology for switching a plurality of rocker arms.
- a variable valve system for controlling the opening and closing of a valve in an internal combustion engine provided with a valve, an engine provided with the same, and a straddle-type vehicle provided with the same, and in particular, a technology for switching a plurality of rocker arms.
- variable valve apparatus first apparatus
- first apparatus one having two rocker arms, an output link, a connecting link, an actuator plate, an armature, a spring and a solenoid coil
- the two rocker arms switch the valve lift amount and the like.
- the output link switches the two rocker arms.
- the connection link swings and drives the output link.
- the actuator plate drives the connecting link.
- the armature is made of a magnetic material and is protruded and attached to the lower surface of the actuator plate.
- the spring biases the actuator plate in a raised upper position.
- the solenoid coil magnetically attracts the armature to move the actuator plate to the lower position.
- the actuator plate when the solenoid coil is deenergized, the actuator plate is maintained at the upper position, and the output link is inactivated. Therefore, one rocker arm is actuated to lift the valve.
- the solenoid coil When the solenoid coil is energized, the armature is attracted by the electromagnetic attraction force larger than the biasing force of the spring, and the actuator plate is moved to the lower position.
- the output link is activated via the connection link, and the other rocker arm is actuated to lift the valve.
- the two rocker arms can be switched by switching the non-energization / energization of the solenoid coil.
- Another variable valve operating apparatus (second apparatus) is provided with two rocker arms, an operating piece, a solenoid coil, a spring, and a permanent magnet (see, for example, Patent Document 2).
- the two rocker arms switch the valve lift amount and the like.
- the actuating piece is configured to be able to move in and out and switch between the two rocker arms.
- the solenoid coil drives the actuating piece to move in and out.
- a spring is provided between the solenoid coil and the actuating piece to bias the actuating piece toward the rocker arm.
- the permanent magnet is provided on the solenoid coil side of the operation piece.
- the solenoid coil when the solenoid coil is not energized, the operating piece is advanced by the spring toward the rocker arm and advanced. Therefore, one rocker arm is actuated to lift the valve.
- the solenoid coil When the solenoid coil is energized, the actuating piece is attracted by the electromagnetic attraction of the solenoid coil, and the actuating piece is retracted from the rocker arm side. Therefore, the other rocker arm is actuated to lift the valve.
- the electromagnetic attraction force of the permanent magnet maintains the state in which the operating piece is retracted.
- the solenoid coil in order to release the state in which the operating piece is withdrawn and to advance the operating piece to the rocker arm side, the solenoid coil is temporarily excited so as to move the operating piece in the reverse direction. In this way, the two rocker arms are switched.
- JP-A-10-110610 (FIGS. 1 to 4) Japanese Patent Publication No. 2008-530424 (FIG. 2)
- the second conventional device unlike the first device, suction is performed by the permanent magnet, so that power is not consumed to keep the other rocker arm in contact with the valve.
- permanent magnets have the characteristic that the magnetic force decreases at high temperatures.
- the variable valve device is extremely close to the high temperature part, and it is extremely difficult to take adiabatic measures.
- heat insulation measures even if heat insulation measures are taken, it is inevitable that the structure becomes complicated and the cost increases. That is, the second device has another problem that it is extremely unlikely to be realized although it has no problems as the first device described above.
- the present invention has been made in view of such circumstances, and there is no power consumption for maintaining the state where the rocker arm is switched, and a highly variable valve operating device with extremely high feasibility and an engine equipped with the same. And it aims at providing a saddle-ride type vehicle.
- the first invention relates to a variable valve device for switching a plurality of rocker arms, A connecting pin which is biased (biased) in an exit direction away from the rocker arm side and driven to advance to the rocker arm side to connect the plurality of rocker arms;
- An actuator including an operating piece and driving the operating piece to any one of a plurality of different positions;
- a state holding mechanism for advancing the connection pin toward the rocker arm according to the position of the operation piece and holding the connection pin in the position for advancing the lock arm when the actuator is deactivated; Are provided.
- the actuator when the actuator is operated to switch the rocker arm, the operating piece is moved to a different position, and the connecting pin is advanced to the rocker arm side.
- the state holding mechanism can hold each position of the connecting pin. Therefore, since there is no power consumption for maintaining the state where the rocker arm is switched, and no measures against heat are required, it is possible to realize a highly variable valve operating device with extremely high feasibility.
- the position holding mechanism may hold the position of the connecting pin even when the actuator is actuated and the actuating piece is moving.
- the plurality of rocker arms are two
- the actuator is a push-type or pull-type electromagnetic solenoid
- the electromagnetic solenoid has a function of linearly moving the operation piece in the axial direction, and is energized to either an initial position or an operation position by energization.
- the state holding mechanism is provided with a knock rotation type ratchet mechanism provided with a tip member on the tip end side, and depending on the position of the operation piece, across the initial position and the advanced position, through the most advanced position advanced than the advanced position.
- the tip member is moved.
- the operating piece When the electromagnetic solenoid is energized to operate, the operating piece is driven to one side of the initial position and the operating position. At this time, according to the position of the actuating piece, the tip end member of the knocking rotary ratchet mechanism moves from the initial position to the advanced position, and moves from the advanced position or from the advanced position to the initial position through the advanced position. However, even if the actuating piece returns to the other side, the position of the tip member is held in the advanced position by the ratchet. Moreover, it is sufficient to turn on the electromagnetic solenoid when moving the tip member to the advanced position, and it is also sufficient to turn on the electromagnetic solenoid also when returning the tip member from the advanced position to the initial position. Therefore, the control can be simplified because it is not necessary to perform complicated driving such as driving the electromagnetic solenoids in different states so that the tip member moves in the reverse direction. As a result, two rocker arms can be easily switched.
- the plurality of rocker arms are two
- the actuator is a rotary electromagnetic solenoid that rotationally drives an operating piece about an axis from an initial position to an operating position
- the state holding mechanism includes biasing means for biasing the actuating piece from the actuating position to the initial position, and a cam in two directions, and a cam shaft interlocked with the rotation of the actuating piece, the actuating piece and the cam shaft A clutch, which is interposed between the first and second clutches to permit rotation of the cam in the direction of rotation of the actuating piece and to prevent rotation of the cam in the direction opposite to the direction of rotation of the actuating piece;
- the actuator is a rotary electromagnetic solenoid that rotationally drives an operating piece about an axis from an initial position to an operating position
- the state holding mechanism includes biasing means for biasing the actuating piece from the actuating position to the initial position, and a cam in two directions, and a cam shaft interlocked with the rotation of the actuating piece, the actuating piece and the
- connection pin and the state holding mechanism between the connection pin and the state holding mechanism, one end located on the state holding mechanism side and the other end located on the connection pin side It is preferable to provide the direction switching lever which has a part, and the said direction switching lever is provided with the rotating shaft between the said one end part and the said other end.
- a fifth invention is an engine provided with the variable valve device according to any one of the first to fourth inventions,
- the actuator is mounted such that a plane orthogonal to the axis of the cylinder and the operating direction of the actuating piece are parallel, and in the direction orthogonal to the main component direction of the vibration generated by the piston-crank system of the engine
- the variable valve actuating device is mounted such that the operating directions of the operating pieces coincide with each other.
- the vibration from the engine does not coincide with the operating direction of the actuator, so that the vibration can be prevented from adversely affecting the operation of the actuator.
- a sixth invention is an engine provided with the variable valve device according to any one of the first to fourth inventions,
- the actuator is attached to the variable valve actuating device so that the actuating direction of the actuating piece is positioned in a direction perpendicular to the axis of the cylinder.
- a seventh invention is a straddle-type vehicle comprising the engine according to the fifth or sixth invention, It is preferable that the actuator is attached to the variable valve operating device so that a plane orthogonal to the direction in which the vehicle body vibrates when traveling is parallel to the operation direction of the operation piece.
- An eighth invention is an engine according to the fifth or sixth invention, A fuel tank for storing fuel; Front and rear wheels, It is preferable to have a transmission mechanism for transmitting the power generated by the engine to the rear wheel.
- ddle-ride type vehicle refers to a vehicle that can be ridden by a passenger straddling a saddle.
- motorcycles all-terrain vehicles (ALL-TERRAIN VEHICLE), and snowmobiles are included.
- motorcycles include scooters and mopeds (also called mopeds) that can be taken together with their legs.
- variable valve device when the actuator is operated to switch the rocker arm, the operating piece is moved to a different position, and the connection pin is advanced to the rocker arm side. At that time, even if the actuator is deactivated, the state holding mechanism can hold each position of the connection pin. Therefore, since there is no power consumption for maintaining the state where the rocker arm is switched and no measures against heat etc. are required, it is possible to realize a highly variable valve operating device with extremely high feasibility.
- FIG. 1 is a longitudinal sectional view showing a schematic configuration of a variable valve device according to a first embodiment.
- FIG. 1 is a cross-sectional view showing a schematic configuration of a variable valve device according to a first embodiment. It is AA arrow sectional drawing of FIG. It is a perspective view which shows the principal part. It is a perspective view which shows a state holding mechanism. It is a disassembled perspective view of a state holding mechanism. It is a figure where it uses for operation
- FIG. 1 is a schematic configuration diagram of an engine provided with a state holding mechanism according to a first embodiment. It is a schematic block diagram of the two-wheeled motor vehicle provided with the engine of FIG.
- positioning of an actuator (a) shows the relationship with the vibration direction of a vehicle body, (b) shows the relationship with the vibration direction of an engine.
- It is a schematic diagram which shows the preferable arrangement example 2 of an actuator (a) shows the relationship with the vibration direction of a vehicle body, (b) shows the relationship with the vibration direction of an engine.
- positioning of an actuator (a) shows the relationship with the vibration direction of a vehicle body, (b) shows the relationship with the vibration direction of an engine.
- variable valve device 3 ... cylinder head 5 ... combustion chamber 11 ... camshaft 13 ... cam for low speed 15 ... cam for high speed 16 ... cam 17 ... rocker shaft 19 ... rocker arm for low speed 21 ... rocker arm for high speed 22 ... rocker arm 23 ... Lost motion spring 33 ... through hole 35 ... compression coil spring 37 ... connecting pin 39 ... engaging part 41 ... actuator 43 ... state holding mechanism 45 ... direction switching lever 57 ... outer peripheral fixed cylinder 59 ... pressing member 61 ... rotating cylinder 63 ... tip member 65 ... spring 67 ... deep groove 69 ... inclined groove 71 ... locking portion 73 ... pressing sliding surface 75 ... locking projection 91 ... engine 111 ... ECU 141 ...
- variable valve device an engine including the variable valve device, and a motorcycle as an example of a straddle-type vehicle including the engine will be described in order.
- FIG. 1 is a longitudinal sectional view showing a schematic configuration of a variable valve system according to a first embodiment
- FIG. 2 is a horizontal sectional view showing a schematic configuration of the variable valve system according to the first embodiment
- 1 is a cross-sectional view taken along the line AA in FIG. 1
- FIG. 4 is a perspective view showing the main part.
- the spring (65) mentioned later is abbreviate
- variable valve device 1 is suitable for a small displacement engine.
- the small exhaust amount means, for example, about 100 cc to 200 cc.
- the present invention can also be applied to single-cylinder engines and multi-cylinder engines.
- the variable valve device 1 is disposed on the top of the cylinder head 3.
- the cylinder head 3 is attached to the top of a cylinder (not shown).
- the cylinder head 3 is provided with a combustion chamber 5 at the bottom.
- An intake port 101 and an exhaust port 112 connected in communication with the side of the cylinder head 3 are formed on the upper surface of the combustion chamber 5.
- Each port is provided with two intake valves 7 and two exhaust valves 9, respectively.
- a piston that reciprocates in the vertical direction in FIG. 1 is disposed below the cylinder head 3.
- the cylinder head 3 is provided with a single cam shaft 11.
- the camshaft 11 includes a low speed cam 13 and a high speed cam 15 on the intake side and a cam 16 on the exhaust side.
- rocker shafts 17 are provided on the intake side and the exhaust side at positions parallel to the camshaft 11 with the camshaft 11 interposed therebetween.
- a low speed rocker arm 19 of a seesaw type and a high speed rocker arm 21 are swingably attached around the axis of the rocker shaft 17 to the rocker shaft 17 on the intake side.
- a seesaw type rocker arm 22 is attached swingably around the axis of the rocker shaft 17.
- the low speed rocker arm 19 has a needle roller 25 on one end side contacting the low speed cam 13 and an adjusting screw 27 on the other end side contacting the valve stem end of the intake valve 7.
- the rocker arm 22 has the same configuration as the low speed rocker arm 19 except that there is no through hole (33) described later.
- an intake valve is described as an example, the present invention is also applicable to a drive system of an exhaust valve.
- the high speed rocker arm 21 is provided with a needle roller 29 at one end side contacting the high speed cam 15. Further, in the high speed rocker arm 21, the needle roller 29 is urged toward the high speed cam 15 by the lost motion spring 31.
- a through hole 33 is formed in parallel to the rocker shaft 17 at an upper portion of the low speed rocker arm 19 which is above the rocker shaft 17.
- the connection pin 37 is inserted through the compression coil spring 35 in the through hole 33.
- the connection pin 37 is inserted in such a way as to be able to move forward and backward through the through hole 33 (through opening), but is biased in the withdrawal direction by the compression coil spring 35.
- the connecting pin 37 is formed to be longer in length than the low speed rocker arm 19. Therefore, when advanced by a mechanism to be described later, the front end thereof advances from the side surface of the low speed rocker arm 19 to the high speed rocker arm 21 side.
- An engagement portion 39 (an interlocking portion) is formed on the upper portion of the high speed rocker arm 21 which is above the rocker shaft 17.
- the engaging portion 39 is formed with a notch on the opposite side of the camshaft 11, in other words, on the side of the adjusting screw 27 of the low speed rocker arm 19.
- FIG. 5 is a perspective view showing the state holding mechanism
- FIG. 6 is an exploded perspective view of the state holding mechanism
- FIG. 7 is a view for explaining the operation of the state holding mechanism.
- the initial position is shown
- (b) shows the transition position from the initial position
- (c) shows the most advanced position
- FIG. 8 is a diagram for explaining the operation of the state holding mechanism, (a), (b) ) Shows the transition position from the most advanced position, and (c) shows the advanced position.
- connection pin 37 is driven to move forward and backward by the actuator 41, the state holding mechanism 43, and the direction switching lever 45.
- the actuator 41 is, for example, a push-type electromagnetic solenoid, and when energized, deenergizes and drives the actuating piece 47 at the tip of the plunger to advance or withdraw to the initial position and the advanced position.
- a direction switching lever 45 is provided between the state holding mechanism 43 and the connection pin 37.
- the direction switching lever 45 is shaped like a letter L in plan view.
- a rotating shaft 51 is provided between one end 48 and the other end 49 of the direction switching lever 45, and the one end 48 and the other end 49 swing around the rotating shaft 51.
- One end side 48 of the direction switching lever 45 is in contact with the state holding mechanism 43, and the other end side 49 is in contact with the connection pin 37.
- the other end side 49 of the direction switching lever 45 and the rotating shaft 51 are accommodated in the cam cover 53 (see FIGS. 1 and 3).
- one end side 48 of the direction switching lever 45 is disposed on the top of the cam cover 53 together with the state holding mechanism 43 and the actuator 41.
- the upper portion of the cam cover 53 is covered with a top cover.
- the actuator 41 is disposed such that the advancing / retracting direction (operating direction) of the actuating piece 47 is orthogonal to the axis of a cylinder (not shown) disposed below the cylinder head 3.
- the arrangement example of the actuator 41 will be described in detail later.
- the state holding mechanism 43 is accommodated in the cover convex portion 55.
- the state holding mechanism 43 is configured of, for example, a knock rotation type ratchet mechanism.
- the outer peripheral fixed cylinder 57, the pressing member 59 inserted inside from the rear end side of the outer peripheral fixed cylinder 57, and the front end side of the outer peripheral fixed cylinder 57
- the rotary cylinder 61 is inserted, the distal end member 63 inserted from the distal end side of the rotary cylinder 61, and the spring 65 biasing the distal end member 63 toward the pressing member 59 side.
- the outer peripheral fixing cylinder 57 is formed with a deep groove 67, an inclined groove 69, and a locking (retaining and stopping) portion 71 in an annular portion on the tip end side.
- the inclined groove 69 is adjacent to the deep groove 67.
- the locking portion 71 is formed between the inclined groove 69 and the deep groove 67.
- the pressing member 59 is formed with a triangular pressing sliding surface 73 in an annular portion on the tip side.
- the rotary cylinder 61 is formed at its rear portion with a locking projection 75 projecting in the circumferential direction.
- the state holding mechanism 43 configured as described above operates as shown in FIGS. 7 and 8 when the actuating piece 47 of the actuator 41 is advanced and retracted.
- the tip member 63 changes from the state A to the state B and becomes the state C.
- the state C is changed to the state A through the state B. At this time, in the state A and the state C, even if the actuator 41 is inactivated, the state is maintained.
- the one end side 48 of the direction switching lever 45 is moved from the state of the solid line in FIG. That is, in the state A, the other end side 49 maintains the state in which the connecting pin 37 is retreated away from the high speed rocker arm 21 side, and in the state C, the connecting pin 37 advances so as to approach the high speed rocker arm 21 side. Maintain the condition you Therefore, when the actuator 41 is actuated and deactivated, the connecting pin 37 can be advanced, and similarly, when the actuator 41 is activated and deactivated, the connecting pin 37 can be retracted. In other words, the high-speed rocker arm 21 can be coupled to the low-speed rocker arm 19 by the actuator 41 being operated and deactivated. In addition, the actuator 41 is actuated and deactivated, whereby the connection between the low speed rocker arm 19 and the high speed rocker arm 21 can be released.
- the actuating piece 47 When a push-type electromagnetic solenoid is used as the actuator 41, the actuating piece 47 is advanced from the initial position to the actuating position by energization, and the actuating piece 47 is retracted from the actuating position to the initial position by deenergization. At this time, the distal end member 63 of the state holding mechanism 43 moves back and forth between the state A and the state B depending on the position of the operation piece 47 during the state C. Is held in state C. Moreover, when moving the tip end member 63 to the state C, the actuator 41 may only be turned on, and when the tip end member 63 is returned to the state A, the actuator 41 may only be turned on.
- the direction switching lever 45 is provided between the connecting pin 37 and the state holding mechanism 43, the degree of freedom of the mounting position of the actuator 41 can be increased.
- the actuator 41 can be provided such that the axis of the cylinder and the axis of the actuating piece 47 are orthogonal to each other as described above. Therefore, the actuator 41 and the state holding mechanism 43 can be prevented from being adversely affected by the vibration generated by the reciprocating motion of the piston.
- the push-type electromagnetic solenoid has been described as an example of the actuator 41.
- the present invention can also be implemented using a pull-type solenoid instead of the push-type solenoid.
- the pull-type electromagnetic solenoid the operating piece 47 retracts when it is turned on, and the operating piece 47 advances when it is turned off. Therefore, the arrangement position of the actuator 41 in the above embodiment is shifted from the axial center of the state holding mechanism 43, and the actuator 41 is arranged at one end side across the rotation axis of the seesaw lever. , And the state holding mechanism 43 may be positioned at the other end.
- variable valve system a second embodiment of the variable valve system will be described with reference to the drawings. Only the actuator 76 and the state holding mechanism 77 in the variable valve system will be described.
- the direction switching lever 45 is omitted, and a direct drive method of directly driving the connection pin 37 will be described.
- an indirect drive system via the direction switching lever 45 may be adopted.
- FIG. 9 shows a schematic configuration of the state holding mechanism according to the second embodiment, (a) shows an initial position, (b) shows an operating position (during operation), and (c) shows an operating position (during non-operation ).
- the upper drawing is a front view, and the lower drawing is a plan view.
- the actuator 76 is constituted, for example, by a rotary electromagnetic solenoid provided with an operating piece 79 which is rotated about an axis.
- the operating piece 79 is rotated counterclockwise as viewed from the front.
- the state holding mechanism 77 is connected to the actuating piece 79, includes a regulating plate 81 that rotates with the actuating piece 79 and regulates the rotation of the actuating piece 79 to 90 degrees.
- the regulating plate 81 has a disk shape, and includes two regulating grooves 83 into which the regulating member 82 for fixing the position is inserted.
- the restricting member 82 is fixed to the end of the actuator 76 opposite to the actuating piece 79.
- the two restriction grooves 83 are formed at opposing positions with the actuating piece 79 in between, and are formed over a range of 90 degrees from the central position. Further, a return spring 84 is attached around the actuating piece 79 to bias the actuating piece 79 from the actuating position to the initial position. Further, on the tip end side of the operating piece 79, a cam shaft 87 provided with cams 85 in two opposing directions with the operating piece 79 at the center is attached.
- the rotation of the camshaft 87 in the rotational direction of the actuating piece 79 is permitted between the camshaft 87 and the actuating piece 79, and the rotation of the camshaft 87 in the direction opposite to the rotational direction of the actuating piece 79 is A blocking clutch 89 is provided.
- the return spring 84 corresponds to the "biasing means" in the present invention.
- the connecting pin 37 can be advanced to the high speed rocker arm 21 side or can be retreated in the direction away from the high speed rocker arm 21 side. Therefore, since it is not necessary to perform complicated driving such as driving the rotary electromagnetic solenoid constituting the actuator 76 with the opposite polarity electrically, control can be simplified. As a result, the low speed rocker arm 19 and the high speed rocker arm 21 can be easily switched.
- the rotation direction of the operation piece 79 is counterclockwise, but may be clockwise.
- the operating piece of the state holding mechanism may be configured to be able to advance from the initial position in two or more steps, and the actuator may be configured to be able to move the operating piece in two or more steps from the initial position.
- FIG. 10 is a schematic configuration diagram of an engine provided with the state holding mechanism according to the first embodiment.
- the engine 91 includes a cylinder 92, the cylinder head 3 described above, a crankshaft 93, a piston 95, and a spark plug 97.
- a fuel supply device 105 (also referred to as an injector) is attached to the intake pipe 103 communicated with the intake port 101.
- a throttle valve 107 is attached to the intake pipe 103. The throttle valve 107 opens and closes according to the amount of operation of an accelerator provided on a grip or the like (not shown), and an accelerator sensor 109 that outputs a signal according to the opening is attached. .
- a signal from the accelerator sensor 109 is taken into the ECU 111.
- An exhaust port 112 is formed on the opposite side of the intake port 101. Note that a carburetor may be provided instead of the fuel supply device 105.
- a rotation angle detection device 113 for detecting the rotation angle of the crankshaft 93 is attached to the cylinder 92.
- the rotation angle (crank angle) of the crankshaft 93 is detected by the output signal of the rotation angle detection device 113, whereby the ECU 111 can determine the operating condition (operating state) of the engine 91.
- the ECU 111 operates the ignition system 115 according to the operating conditions to adjust the ignition timing. Furthermore, the actuator drive power supply 117 is operated in accordance with the operating state, and the actuator 41 is operated as described above. As a result, control is performed to switch between the low speed rocker arm 19 and the high speed rocker arm 21 according to the operating state.
- the engine 91 Since the engine 91 is provided with the variable valve device 1, there is no power consumption for maintaining the state where the low speed rocker arm 19 and the high speed rocker arm 21 are switched, and no heat countermeasure is necessary. The feasibility is extremely high. Therefore, the fuel consumption improvement of the engine 91 can be expected.
- the actuator 41 is attached as follows. That is, the actuator 41 is attached such that a virtual plane orthogonal to the axis of the cylinder 92 and the operation direction of the operation piece 47 are parallel. Further, the actuator 41 is attached such that the operation direction of the operation piece 47 coincides with the direction perpendicular to the main component direction of the vibration generated by the piston-crank system of the engine 91.
- the actuator 41 is arranged as described above, since the vibration from the engine 91 does not coincide with the operating direction of the actuator 41, it is possible to prevent the vibration from adversely affecting the operation of the actuator 41.
- the various arrangement examples of such an actuator 41 will be described in detail later.
- the axial direction of the cylinder 92 is the main component direction of the vibration of the engine 91. Therefore, if the actuator 41 is attached so that the operation piece 47 is positioned in the direction orthogonal to the axis of the cylinder 92, the same effect as described above is obtained. The same applies to the following arrangement examples 2 to 4 with regard to this point.
- the actuator 76 described in the second embodiment may be provided instead of the actuator 41 of the variable valve device 1 included in the engine 91 described above. In that case, the direction switching lever 45 can be omitted, and the configuration can be simplified.
- the actuator 76 is preferably disposed in consideration of the operating direction of the operating piece 79 and the vibration direction from the engine 91 as described above.
- FIG. 11 is a schematic configuration diagram of a motorcycle provided with the engine of FIG. In FIG. 11, the outer shape is indicated by a two-dot chain line.
- a head pipe 133 is provided at the front end of the main frame 131.
- a front fork 135 which can swing in the left-right direction is attached to the head pipe 133.
- a front wheel 137 is rotatably attached to a lower end portion of the front fork 135.
- a steering handle 139 is attached to the top of the front fork 135.
- a fuel tank 141 is attached to the rear end of the main frame 131.
- a power transmission device 145 is attached swingably to the main frame 131.
- a rear wheel 147 is rotatably attached to the rear end of the power transmission device 145.
- a rear suspension 151 is disposed at a rear end portion of the power transmission device 145 so as to be sandwiched (supported in a sandwiched state) between the main frame 131 and the power transmission device 145.
- the engine 91 described above is disposed between the main frame 131 and the power transmission device 145.
- an ECU 111 and a battery 165 are attached.
- the above-described power transmission device 145 corresponds to the “transmission mechanism” in the present invention.
- the power transmission device 145 transmits the power generated by the engine 91 which can be expected to improve the fuel efficiency to the rear wheel 147, whereby a motorcycle with good fuel efficiency can be realized.
- scooter type vehicle was taken as an example in the above-mentioned motorcycle, it may be a two-wheeled motorcycle other than this type.
- FIG. 12 is a schematic view showing a preferred arrangement example 1 of the actuator, in which (a) shows the relationship with the vibration direction of the vehicle body and (b) shows the relationship with the vibration direction of the engine.
- two actuators 41 are illustrated in the drawing, this indicates that two actuators 41 may be provided, and one actuator 41 may be provided at any position. ing. In this regard, the same applies to FIGS. 13 to 15 below.
- This straddle-type vehicle is a configuration found in so-called mopeds and motorcycles. Specifically, as shown in FIG. 12A, the engine 91 is fixedly attached to the main frame 131 corresponding to the "vehicle body" so as to be suspended. The tip end of the cylinder 92 of the engine 91 is directed to the front wheel 137 side.
- the vibration that the main frame 131 receives from the road surface during traveling is the direction RV1. Therefore, the vibration (in other words, the load) that the tip end portion of the cylinder 92 of the engine 91 fixedly attached to the main frame 131 receives during traveling is the direction RV2.
- the vibration direction RV1 may occur in each of the front wheel 137 and the rear wheel 147, the vibration direction RV2 indicates a rough direction.
- the main component direction of the vibration generated by the cylinder 92-crankshaft 93 is the directions EV1 and EV2.
- main component directions EV1 and EV2 of these vibrations differ depending on the configuration of the engine 91. However, most of them are the main component direction EV1 in the cylinder 92 direction.
- the component directions EV1 and EV2 of vibration are various directions of component of vibration, but are directions of vibration which become the largest component when they are synthesized.
- Reference numeral CA denotes a direction in which the piston 95 reciprocates, and represents an axis of the cylinder 92.
- the code CP1 represents a virtual plane orthogonal to the axis of the cylinder 92.
- the plane CP1 shows a state viewed from the tip end side of the cylinder 92.
- a code CP2 represents a virtual plane orthogonal to the vibration direction RV2.
- the plane CP2 is indicated by a straight line of a dashed dotted line.
- the vibration direction RV2 in FIG. 12B is the vibration direction RV2 viewed from the tip of the cylinder 92. Therefore, the vibration direction RV2 of FIG. 12 (a) is not identical to the vibration direction RV2 of FIG. 12 (b).
- the actuator 41 receives the vibration in the vibration direction RV2 that the engine 91 receives from the road surface during traveling and the component direction EV1 of the vibration caused by the cylinder 92-crankshaft 93. Therefore, it is preferable to provide the actuator 41 so that the plane CP1 orthogonal to the axis of the cylinder 92 is parallel to the plane CP1 and the operation direction OP of the actuating piece 47 of the actuator 41. Furthermore, it is preferable to provide the actuator 41 on the engine 91 in such a configuration that the actuation direction OP of the actuation piece 47 of the actuator 41 coincides with the direction perpendicular to the main component directions EV1 and EV2 of vibration. Furthermore, it is preferable to attach the actuator 41 so that a virtual plane CP2 orthogonal to the vibration direction RV2 generated during traveling and the operation direction OP of the actuator 41 become parallel.
- the main component directions EV1 and EV2 of the vibration from the engine 91 do not coincide with the operation direction of the actuator 41, so that the vibration can be prevented from adversely affecting the operation of the actuator 41. . Further, since the direction RV2 of the vibration generated during traveling does not coincide with the operating direction of the actuator 41, it is possible to prevent the vibration from adversely affecting the operation of the actuator 41.
- the actuator 41 since the actuator 41 is not susceptible to vibration, the load on the spring for biasing the electromagnetic solenoid can be reduced. Therefore, the driving force of the electromagnetic solenoid can be reduced, and power consumption can be suppressed.
- FIG. 13 is a schematic view showing a preferred arrangement example 2 of the actuator, in which (a) shows the relationship with the vibration direction of the vehicle body and (b) shows the relationship with the vibration direction of the engine.
- This straddle-type vehicle has a configuration found in so-called mopeds and motorcycles, as in the above-described first example of arrangement.
- the engine 91 is fixedly mounted so as to be mounted on the down tube 131a of the main frame 131.
- the tip of the cylinder 92 is directed upward.
- the vibration received during traveling is the direction RV1
- the vibration received by the engine 91 is the direction RV2.
- the main component direction of the vibration by the cylinder 92-crankshaft 93 is the directions EV1 and EV2. As described above, most of them are the main component direction EV1 in the cylinder 92 direction.
- a symbol CA represents an axis of the cylinder 92
- a symbol CP1 represents an imaginary plane orthogonal to the axis of the cylinder 92
- a symbol CP2 represents an imaginary plane orthogonal to the vibration direction RV2.
- the vibration direction RV2 in FIG. 13B is the vibration direction RV2 viewed from the top of the cylinder 92. Therefore, the direction of FIG. 13 (b) is not the same as the vibration direction RV2 of FIG. 13 (a).
- the actuator 41 it is preferable to provide the actuator 41 so that an imaginary plane CP1 orthogonal to the axis of the cylinder 92 and the operation direction OP of the actuating piece 47 of the actuator 41 are parallel. Furthermore, it is preferable to provide the actuator 41 on the engine 91 in such a configuration that the actuation direction OP of the actuation piece 47 of the actuator 41 coincides with the direction perpendicular to the main component directions EV1 and EV2 of vibration. Furthermore, it is preferable to attach the actuator 41 so that a virtual plane CP2 orthogonal to the vibration direction RV2 generated during traveling and the operation direction OP of the actuator 41 become parallel.
- FIG. 14 is a schematic view showing a preferred arrangement example 3 of the actuator, in which (a) shows the relationship with the vibration direction of the vehicle body and (b) shows the relationship with the vibration direction of the engine.
- a swing arm SA is attached to a pivot PV provided on a main frame 131.
- the engine 91 is also mounted so as to rock in conjunction with the rocking of the swing arm SA at the pivot PV.
- Such a so-called swing unit configuration is often employed in scooter type vehicles.
- the tip end portion of the cylinder 92 is horizontally directed to the front wheel 137 side.
- the vibration received during traveling is the direction RV1
- the vibration received during traveling of the tip end of the cylinder 92 is the direction RV2 centered on the pivot PV.
- the main component direction of the vibration by the cylinder 92-crankshaft 93 is the directions EV1 and EV2, as in the first arrangement example. As described above, most of them are the main component direction EV1 in the cylinder 92 direction.
- a symbol CA represents the axis of the cylinder 92
- a symbol CP1 represents a virtual plane orthogonal to the axis of the cylinder 92
- a symbol CP2 represents a plane orthogonal to the vibration direction RV2.
- the vibration direction RV2 in FIG. 14B is the vibration direction RV2 viewed from the top of the cylinder 92. Therefore, the vibration direction RV2 in FIG. 14 (a) is not identical to the vibration direction RV2 in FIG. 14 (b).
- the actuator 41 it is preferable to provide the actuator 41 so that the virtual plane CP1 orthogonal to the axis of the cylinder 92 and the operation direction OP of the actuating piece 47 of the actuator 41 are parallel. Furthermore, it is preferable to provide the actuator 41 on the engine 91 in such a configuration that the actuation direction OP of the actuation piece 47 of the actuator 41 coincides with the direction perpendicular to the main component directions EV1 and EV2 of vibration. Furthermore, it is preferable to attach the actuator 41 so that a virtual plane CP2 orthogonal to the vibration direction RV2 generated during traveling and the operation direction OP of the actuator 41 become parallel.
- FIG. 15 is a schematic view showing a preferred arrangement example 4 of the actuator, in which (a) shows the relationship with the vibration direction of the vehicle body and (b) shows the relationship with the vibration direction of the engine.
- a swing arm SA is attached to a pivot PV provided on a down tube 131a of a main frame 131.
- the engine 91 is also configured as a so-called swing unit as in the above-described arrangement example 3 attached so as to swing in conjunction with swinging of the swing arm SA at the pivot PV.
- the tip of the cylinder 92 is directed upward.
- the vibration received during traveling is the direction RV1
- the vibration received by the engine 91 is the direction RV2.
- the main component direction of the vibration by the cylinder 92-crankshaft 93 is the directions EV1 and EV2. Most of them are the main component direction EV1 in the cylinder 92 direction.
- a symbol CA represents an axis of the cylinder 92
- a symbol CP1 represents an imaginary plane orthogonal to the axis of the cylinder 92
- a symbol CP2 represents an imaginary plane orthogonal to the vibration direction RV2.
- the vibration direction RV2 in FIG. 15B is the vibration direction RV2 viewed from the top of the cylinder 92. Therefore, in the vibration direction RV2 in FIG. 15 (a), the vibration directions in FIG. 15 (b) do not match.
- the actuator 41 it is preferable to provide the actuator 41 so that the virtual plane CP1 orthogonal to the axis of the cylinder 92 and the operation direction OP of the actuating piece 47 of the actuator 41 are parallel. Furthermore, it is preferable to provide the actuator 41 on the engine 91 in such a configuration that the actuation direction OP of the actuation piece 47 of the actuator 41 coincides with the direction perpendicular to the main component directions EV1 and EV2 of vibration. Furthermore, it is preferable to attach the actuator 41 so that a virtual plane CP2 orthogonal to the vibration direction RV2 generated during traveling and the operation direction OP of the actuator 41 become parallel.
- the above first to fourth examples of arrangement can be applied to straddle-type vehicles of other types.
- both of the positional relationship between the plane CP1 orthogonal to the axis of the cylinder 92 and the positional relationship between the plane CP2 orthogonal to the vibration direction RV2 are satisfied. It may be configured to satisfy only the positional relationship with the plane CP1 orthogonal to the axis.
- the two-wheeled vehicle has been exemplified as an example of the straddle-type vehicle in the present invention
- any vehicle can be applied as long as it is equipped with an engine and can get on with a person straddling.
- Such vehicles may include three-wheeled bikes, snowmobiles and the like.
- the front wheels may be two-wheeled three-wheeled motorcycles
- the rear wheels may be two-wheeled three-wheeled motorcycles.
- the present invention is suitable for a variable valve system for controlling the opening and closing of a valve in an internal combustion engine provided with a valve, an engine provided with the same, and a straddle-type vehicle provided with the same.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve Device For Special Equipments (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Mechanically-Actuated Valves (AREA)
Abstract
Description
すなわち、従来の第1の装置では、他方のロッカアームをバルブに接触させ続けるために、ソレノイドコイルに通電を継続する必要がある。したがって、他方のロッカアームをバルブに接触させ続ける際に電力を消費するという問題がある。このように電力を消費すると、可変動弁装置のための発電により多くの駆動力が使われるので、エンジンの燃料消費量が増加する。
すなわち、第1の発明は、複数個のロッカアームを切り換える可変動弁装置であって、
ロッカアーム側から離れる退出方向に付勢(bias、勢いが付されること)され、ロッカアーム側へ進出するように駆動されて前記複数個のロッカアームを連結する連結ピンと、
作動片を備え、複数の異なる位置のいずれか1つの位置に前記作動片を駆動させるアクチュエータと、
前記作動片の位置に応じて前記連結ピンをロッカアーム側に進出させるとともに、前記アクチュエータが非作動とされたときに、前記連結ピンをロッカアーム側へ進出させた位置に保持する状態保持機構と、
を備えているものである。
前記アクチュエータは、プッシュ型またはプル型の電磁ソレノイドであり、前記電磁ソレノイドは、前記作動片を軸方向に直線的に移動させる機能を備え、通電により初期位置と作動位置といずれか一方の位置に前記作動片を駆動し、
前記状態保持機構は、先端側に先端部材を備えたノック回転式ラチェット機構を備え、前記作動片の位置に応じて、初期位置と進出位置とにわたって、進出位置よりも進出した最進出位置を経て前記先端部材を移動することが好ましい。
前記アクチュエータは、作動片を初期位置から作動位置に対して、軸廻りに回転駆動するロータリ形の電磁ソレノイドであり、
前記状態保持機構は、前記作動片を作動位置から初期位置に付勢する付勢手段と、二方向にカムを備え、前記作動片の回転に連動するカム軸と、前記作動片と前記カム軸の間に介在し、前記作動片の回転方向への前記カムの回転を許容するとともに、前記作動片の回転方向と逆方向への前記カムの回転を阻止するクラッチと、
を備えていることが好ましい。
前記アクチュエータは、シリンダの軸線と直交する平面と、前記作動片の作動方向とが平行となるように取り付けられ、かつ、前記エンジンのピストン-クランク系により生じる振動の主成分方向と直交する方向に、その作動片の作動方向が一致するように前記可変動弁装置に取り付けられていることが好ましい。
前記アクチュエータは、シリンダの軸線と直交する方向に、その作動片の作動方向が位置するように前記可変動弁装置に取り付けられていることが好ましい。
前記アクチュエータは、走行時に車体が振動する方向と直交する平面と、その作動片の作動方向とが平行となるように前記可変動弁装置に取り付けられていることが好ましい。
燃料を貯留する燃料タンクと、
前輪及び後輪と、
前記エンジンにより発生される動力を前記後輪に伝達する伝達機構とを備えていることが好ましい。
3 … シリンダヘッド
5 … 燃焼室
11 … カムシャフト
13 … 低速用カム
15 … 高速用カム
16 … カム
17 … ロッカシャフト
19 … 低速用ロッカアーム
21 … 高速用ロッカアーム
22 … ロッカアーム
23 … ロストモーションスプリング
33 … 貫通口
35 … 圧縮コイルバネ
37 … 連結ピン
39 … 係合部
41 … アクチュエータ
43 … 状態保持機構
45 … 方向切り換えレバー
57 … 外周固定筒
59 … 押圧部材
61 … 回転筒
63 … 先端部材
65 … スプリング
67 … 深溝
69 … 傾斜溝
71 … 係止部
73 … 押圧摺動面
75 … 係止突起
91 … エンジン
111 … ECU
141 … 燃料タンク
137 … 前輪
145 … 動力伝達装置
147 … 後輪
RV1 … 走行時に路面から車両が受ける振動方向
RV2 … 走行時にエンジンが受ける振動方向
EV1,EV2 … シリンダ-クランク系による振動の主成分方向
CA … シリンダの軸線
CP1 … シリンダの軸線と直交する平面
CP2 … 振動方向RV2と直交する平面
OP … 作動方向
すなわち、シリンダ92の軸線と直交する仮想の平面と、作動片47の作動方向とが平行となるようにアクチュエータ41が取り付けられている。さらに、エンジン91のピストン-クランク系により生じる振動の主成分方向と直交する方向に、その作動片47の作動方向が一致するようにアクチュエータ41が取り付けられている。このようにアクチュエータ41を配置すると、エンジン91からの振動がアクチュエータ41の作動方向と一致しないので、この振動がアクチュエータ41の動作に悪影響が及ぶのを防止することができる。なお、このようなアクチュエータ41についての各種配置例については詳細を後述する。
図12を参照する。なお、図12は、アクチュエータの好ましい配置例1を示す模式図であり、(a)は車体の振動方向との関係を示し、(b)はエンジンの振動方向との関係を示す。なお、図中にアクチュエータ41が2個描かれているが、これは、2個のアクチュエータ41が設けられてもよく、1個のアクチュエータ41がいずれかの位置に設けられてもよいことを表している。この点に関しては、以下の図13~図15についても同様である。
図13を参照する。なお、図13は、アクチュエータの好ましい配置例2を示す模式図であり、(a)は車体の振動方向との関係を示し、(b)はエンジンの振動方向との関係を示す。
図14を参照する。なお、図14は、アクチュエータの好ましい配置例3を示す模式図であり、(a)は車体の振動方向との関係を示し、(b)はエンジンの振動方向との関係を示す。
図15を参照する。なお、図15は、アクチュエータの好ましい配置例4を示す模式図であり、(a)は車体の振動方向との関係を示し、(b)はエンジンの振動方向との関係を示す。
Claims (8)
- 複数個のロッカアームを切り換える可変動弁装置であって、
ロッカアーム側から離れる退出方向に付勢(bias、勢いが付されること)され、ロッカアーム側へ進出するように駆動されて前記複数個のロッカアームを連結する連結ピンと、
作動片を備え、複数の異なる位置のいずれか1つの位置に前記作動片を駆動させるアクチュエータと、
前記作動片の位置に応じて前記連結ピンをロッカアーム側に進出させるとともに、前記アクチュエータが非作動とされたときに、前記連結ピンをロッカアーム側へ進出させた位置に保持する状態保持機構と、
を備えている可変動弁装置。 - 請求項1に記載の可変動弁装置であって、
前記複数個のロッカアームが二つであり、
前記アクチュエータは、プッシュ型またはプル型の電磁ソレノイドであり、前記電磁ソレノイドは、前記作動片を軸方向に直線的に移動させる機能を備え、通電により初期位置と作動位置といずれか一方の位置に前記作動片を駆動し、
前記状態保持機構は、先端側に先端部材を備えたノック回転式ラチェット機構を備え、前記作動片の位置に応じて、初期位置と進出位置とにわたって、進出位置よりも進出した最進出位置を経て前記先端部材を移動する可変動弁装置。 - 請求項1に記載の可変動弁装置であって、
前記複数個のロッカアームが二つであり、
前記アクチュエータは、作動片を初期位置から作動位置に対して、軸廻りに回転駆動するロータリ形の電磁ソレノイドであり、
前記状態保持機構は、前記作動片を作動位置から初期位置に付勢する付勢手段と、二方向にカムを備え、前記作動片の回転に連動するカム軸と、前記作動片と前記カム軸の間に介在し、前記作動片の回転方向への前記カムの回転を許容するとともに、前記作動片の回転方向と逆方向への前記カムの回転を阻止するクラッチと、
を備えている可変動弁装置。 - 請求項1から3のいずれかに記載の可変動弁装置であって、
前記連結ピンと前記状態保持機構との間には、前記状態保持機構側に位置する一端部と前記連結ピン側に位置する他端部とを有する方向切り換えレバーを備え、前記方向切り換えレバーは、前記一端部と前記他端部との間に回転軸を備えている可変動弁装置。 - 請求項1から4のいずれかに記載の可変動弁装置を備えたエンジンであって、
前記アクチュエータは、シリンダの軸線と直交する平面と、前記作動片の作動方向とが平行となるように取り付けられ、かつ、前記エンジンのピストン-クランク系により生じる振動の主成分方向と直交する方向に、その作動片の作動方向が一致するように前記可変動弁装置に取り付けられているエンジン。 - 請求項1から4のいずれかに記載の可変動弁装置を備えたエンジンであって、
前記アクチュエータは、シリンダの軸線と直交する方向に、その作動片の作動方向が位置するように前記可変動弁装置に取り付けられているエンジン。 - 請求項5または6に記載のエンジンを備えた鞍乗型車両であって、
前記アクチュエータは、走行時に車体が振動する方向と直交する平面と、その作動片の作動方向とが平行となるように前記可変動弁装置に取り付けられている鞍乗型車両。 - 請求項5または6に記載のエンジンと、
燃料を貯留する燃料タンクと、
前輪及び後輪と、
前記エンジンにより発生される動力を前記後輪に伝達する伝達機構とを備えている鞍乗型車両。
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011528602A JP5244978B2 (ja) | 2009-08-24 | 2010-03-10 | 可変動弁装置及びそれを備えたエンジン並びに鞍乗型車両 |
| CN201080037972.8A CN102482960B (zh) | 2009-08-24 | 2010-03-10 | 可变动阀装置、具有该可变动阀装置的发动机及跨乘式车辆 |
| EP10811395.2A EP2472075B1 (en) | 2009-08-24 | 2010-03-10 | Variable valve device, engine with same, and saddled vehicle |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2009193223 | 2009-08-24 | ||
| JP2009-193223 | 2009-08-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2011024335A1 true WO2011024335A1 (ja) | 2011-03-03 |
Family
ID=43627459
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/JP2010/001709 Ceased WO2011024335A1 (ja) | 2009-08-24 | 2010-03-10 | 可変動弁装置及びそれを備えたエンジン並びに鞍乗型車両 |
Country Status (4)
| Country | Link |
|---|---|
| EP (1) | EP2472075B1 (ja) |
| JP (3) | JP5244978B2 (ja) |
| CN (1) | CN102482960B (ja) |
| WO (1) | WO2011024335A1 (ja) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240263572A1 (en) * | 2021-05-29 | 2024-08-08 | Eaton Intelligent Power Limited | Pivoting bracket assembly, actuator assembly, and valvetrain |
Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015010553A (ja) * | 2013-06-28 | 2015-01-19 | ヤマハ発動機株式会社 | エンジン |
| JP2015010554A (ja) * | 2013-06-28 | 2015-01-19 | ヤマハ発動機株式会社 | エンジン |
| JP2015090098A (ja) * | 2013-11-06 | 2015-05-11 | ヤマハ発動機株式会社 | 鞍乗型車両 |
| JP6378988B2 (ja) * | 2014-09-22 | 2018-08-22 | 株式会社オティックス | 内燃機関の可変動弁機構 |
| US10352201B2 (en) | 2015-10-05 | 2019-07-16 | Yamaha Hatsudoki Kabushiki Kaisha | Valve mechanism of engine |
| JP6932179B2 (ja) | 2019-12-27 | 2021-09-08 | ヤマハ発動機株式会社 | ロストモーション機構、動弁装置およびエンジン |
| US12071870B2 (en) | 2020-10-22 | 2024-08-27 | Eaton Intelligent Power Limited | Castellation assembly, rocker arm, and actuator assembly therefor |
| EP4256181A4 (en) * | 2020-12-03 | 2024-11-20 | Jacobs Vehicle Systems, Inc. | ROTARY ACTUATOR SYSTEM FOR CONTROLLING VALVE ACTUATION IN AN INTERNAL COMBUSTION ENGINE |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10110610A (ja) | 1996-09-30 | 1998-04-28 | Eaton Corp | エンジンバルブアクチュエータ及びバルブ制御装置 |
| JP2001197605A (ja) * | 2000-01-06 | 2001-07-19 | Yanmar Diesel Engine Co Ltd | 簡易スイッチ切換装置 |
| JP2001355552A (ja) * | 2000-06-15 | 2001-12-26 | Denso Corp | スタータ |
| JP2008530424A (ja) | 2005-02-10 | 2008-08-07 | ダイムラー・アクチェンゲゼルシャフト | 内燃機関の弁装置の二つの作動要素を連結又は分離する装置、及びその方法 |
Family Cites Families (25)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH061044B2 (ja) * | 1985-02-12 | 1994-01-05 | スズキ株式会社 | 4サイクルエンジンのバルブ開閉タイミング可変装置 |
| JP2577578B2 (ja) * | 1987-10-21 | 1997-02-05 | マツダ株式会社 | 多気筒エンジンのバルブ制御装置 |
| DE3931430A1 (de) * | 1989-09-21 | 1991-04-04 | Asea Brown Boveri | Spindeltrieb |
| JP3029486B2 (ja) * | 1991-07-01 | 2000-04-04 | 本田技研工業株式会社 | サイクル休止往復型内燃機関 |
| US5524580A (en) * | 1995-05-11 | 1996-06-11 | Eaton Corporation | Adjusting mechanism for a valve control system |
| JP3369036B2 (ja) * | 1995-12-26 | 2003-01-20 | ヤマハ発動機株式会社 | 頭上カム式エンジン |
| US5697333A (en) * | 1997-02-20 | 1997-12-16 | Eaton Corporation | Dual lift actuation means |
| JPH11336514A (ja) * | 1998-05-28 | 1999-12-07 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
| US5960755A (en) * | 1998-06-09 | 1999-10-05 | Ford Global Technologies, Inc. | Internal combustion engine with variable camshaft timing and variable duration exhaust event |
| JP2000213320A (ja) * | 1998-11-16 | 2000-08-02 | Yamaha Motor Co Ltd | エンジンのカム選択式動弁装置 |
| US6318318B1 (en) * | 2001-05-15 | 2001-11-20 | Ford Global Technologies, Inc. | Rocker arm assembly |
| JP2003041915A (ja) * | 2001-07-30 | 2003-02-13 | Honda Motor Co Ltd | 内燃機関の動弁装置 |
| JP2004225662A (ja) * | 2003-01-27 | 2004-08-12 | Toyota Motor Corp | バルブ特性変更機構を有する内燃機関 |
| DE10312958B4 (de) * | 2003-03-24 | 2005-03-10 | Thyssen Krupp Automotive Ag | Vorrichtung zur vairablen Betätigung der Gaswechselventile von Verbrennungsmotoren und Verfahren zum Betreiben einer derartigen Vorrichtung |
| JP2005042642A (ja) * | 2003-07-24 | 2005-02-17 | Honda Motor Co Ltd | エンジンの動弁装置 |
| JP4265336B2 (ja) * | 2003-08-06 | 2009-05-20 | トヨタ自動車株式会社 | 内燃機関の弁駆動システム及び方法、並びに動力出力装置 |
| JP4259976B2 (ja) * | 2003-10-15 | 2009-04-30 | ヤマハ発動機株式会社 | 自動二輪車及び自動二輪車用エンジン |
| JP2008002269A (ja) * | 2004-09-30 | 2008-01-10 | Yamaha Motor Co Ltd | 可変バルブ駆動装置、エンジン及び自動二輪車 |
| JP4476241B2 (ja) * | 2005-06-20 | 2010-06-09 | 日立オートモティブシステムズ株式会社 | 内燃機関の動弁装置 |
| US7600498B2 (en) * | 2007-02-27 | 2009-10-13 | Ford Global Technologies, Llc | Internal combustion engine with gas exchange valve deactivation |
| JP4900173B2 (ja) * | 2007-10-01 | 2012-03-21 | 株式会社デンソー | バルブリフト制御装置のアクチュエータ |
| EP2050933A1 (en) * | 2007-10-17 | 2009-04-22 | Delphi Technologies, Inc. | Valve operating system comprising a two-step roller finger follower |
| JP4990175B2 (ja) * | 2008-02-04 | 2012-08-01 | 本田技研工業株式会社 | 自動二輪車用エンジンの可変動弁装置、及び自動二輪車 |
| JP5513339B2 (ja) * | 2010-09-30 | 2014-06-04 | 本田技研工業株式会社 | 内燃機関の可変動弁装置 |
| JP5525403B2 (ja) * | 2010-09-30 | 2014-06-18 | 本田技研工業株式会社 | 内燃機関の可変動弁装置 |
-
2010
- 2010-03-10 EP EP10811395.2A patent/EP2472075B1/en active Active
- 2010-03-10 CN CN201080037972.8A patent/CN102482960B/zh active Active
- 2010-03-10 JP JP2011528602A patent/JP5244978B2/ja active Active
- 2010-03-10 WO PCT/JP2010/001709 patent/WO2011024335A1/ja not_active Ceased
-
2013
- 2013-04-03 JP JP2013077644A patent/JP2013151940A/ja active Pending
- 2013-04-03 JP JP2013077645A patent/JP5683631B2/ja active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10110610A (ja) | 1996-09-30 | 1998-04-28 | Eaton Corp | エンジンバルブアクチュエータ及びバルブ制御装置 |
| JP2001197605A (ja) * | 2000-01-06 | 2001-07-19 | Yanmar Diesel Engine Co Ltd | 簡易スイッチ切換装置 |
| JP2001355552A (ja) * | 2000-06-15 | 2001-12-26 | Denso Corp | スタータ |
| JP2008530424A (ja) | 2005-02-10 | 2008-08-07 | ダイムラー・アクチェンゲゼルシャフト | 内燃機関の弁装置の二つの作動要素を連結又は分離する装置、及びその方法 |
Non-Patent Citations (1)
| Title |
|---|
| See also references of EP2472075A4 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20240263572A1 (en) * | 2021-05-29 | 2024-08-08 | Eaton Intelligent Power Limited | Pivoting bracket assembly, actuator assembly, and valvetrain |
| US12270321B2 (en) * | 2021-05-29 | 2025-04-08 | Eaton Intelligent Power Limited | Pivoting bracket assembly, actuator assembly, and valvetrain |
Also Published As
| Publication number | Publication date |
|---|---|
| EP2472075B1 (en) | 2014-09-17 |
| JP2013151940A (ja) | 2013-08-08 |
| JP5683631B2 (ja) | 2015-03-11 |
| JP5244978B2 (ja) | 2013-07-24 |
| JP2013130198A (ja) | 2013-07-04 |
| CN102482960A (zh) | 2012-05-30 |
| EP2472075A4 (en) | 2013-04-10 |
| CN102482960B (zh) | 2014-03-12 |
| JPWO2011024335A1 (ja) | 2013-01-24 |
| EP2472075A1 (en) | 2012-07-04 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5683631B2 (ja) | 鞍乗型車両 | |
| US7802547B2 (en) | Internal combustion engine having variable valve operating device | |
| US8584645B2 (en) | Vehicle including a variable intake pipe length device | |
| US8051832B2 (en) | Air intake control system for internal combustion engine of a vehicle | |
| JP5149268B2 (ja) | 回転角センサ取り付け構造及び同構造を用いた内燃機関の可変動弁装置 | |
| JP5277156B2 (ja) | 内燃機関の可変動弁装置 | |
| CN101153550A (zh) | 多气缸内燃机 | |
| JP2015068317A (ja) | 内燃機関の可変動弁装置 | |
| WO2007060865A1 (ja) | 可変動弁装置ならびにそれを備えるエンジン装置および車両 | |
| WO2010061514A1 (ja) | 可変動弁装置及びそれを備えたエンジン装置並びに輸送機器 | |
| US20090272348A1 (en) | Valve timing control device and engine device and vehicle including the same | |
| JP5397147B2 (ja) | 可変動弁装置 | |
| JP6883507B2 (ja) | エンジン始動装置及び自動二輪車 | |
| CN101397955B (zh) | 废气再循环装置 | |
| CN111749748A (zh) | 内燃机 | |
| JP2016130469A (ja) | エンジンシステムおよび鞍乗り型車両 | |
| JP2012031726A (ja) | 可変動弁装置及びそれを備えたエンジン装置並びに輸送機器 | |
| JPS6325290Y2 (ja) | ||
| US7673603B2 (en) | Valve timing control device and engine device and vehicle including the same | |
| JP5695470B2 (ja) | 内燃機関の制御装置 | |
| JP2025142760A (ja) | 車両用制御装置、制御方法及び鞍乗型車両 | |
| JP2006200463A (ja) | 内燃機関の吸気遮断装置 | |
| JP2005076620A (ja) | エンジンのカム角センサ取付構造及び該構造を採用したエンジンを備える自動二輪車 | |
| JP2004076676A (ja) | 動弁装置およびこれを備えた内燃機関 | |
| JP2009281148A (ja) | 内燃機関の動弁装置用電磁アクチュエータ |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| WWE | Wipo information: entry into national phase |
Ref document number: 201080037972.8 Country of ref document: CN |
|
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application |
Ref document number: 10811395 Country of ref document: EP Kind code of ref document: A1 |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2011528602 Country of ref document: JP |
|
| NENP | Non-entry into the national phase |
Ref country code: DE |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1201000700 Country of ref document: TH |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 2010811395 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: IDP00201405209 Country of ref document: ID |