JP2004169668A - Starter generator device - Google Patents

Abstract

A starter generator with a simple control system and high power generation efficiency is provided by reducing the load applied to an endless power transmission band of a speed reduction mechanism, downsizing the torque transmission system itself and downsizing the internal combustion engine.
A starter generator device connected to an output shaft of an internal combustion engine includes a planetary gear set, a sun gear is integrated with a notch plate having a first notch and a second notch, and a fixing member. By driving the formed slide plate 26 which can regulate the function of the second spring strut 30 capable of engaging and disengaging the second pocket and the second notch of the notch plate 22, the second pocket and the second notch are driven. Slide plate control means 39 and 40 for controlling engagement and disengagement with the second spring strut 30 when the internal combustion engine is started to engage the second pocket and the second notch. A starter / generator device that controls the driving of the slide plate 26 as much as possible.
[Selection diagram] Fig. 1

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a starter generator device that starts an internal combustion engine by a starter generator and generates electric power by the starter generator by the power of the internal combustion engine.
[0002]
[Prior art]
Various starter generator devices of this type have been proposed (for example, see Patent Document 1).
A joint using a lightweight and small spring strut as a torque transmission element of a one-way clutch has already been proposed (for example, see Patent Document 2).
[0003]
[Patent Document 1]
JP-A-11-147424
[Patent Document 2]
JP-T-2002-504979
[0004]
In Patent Document 1, an output shaft of an internal combustion engine is connected to a pulley via an electromagnetic clutch.
On the other hand, a starter generator of an electric motor and a generator has a drive shaft connected to a sun gear of a planetary gear set, a carrier supporting a pinion gear connected to an input / output shaft of a pulley, and a ring gear fixed to a fixed member via a brake. And connected to the input / output shaft via a clutch.
[0005]
The belt wound around the pulleys is also wound around the pulleys provided on the input shaft of the accessories at the same time.
[0006]
When the internal combustion engine is started, the electromagnetic clutch and the brake are turned on and the clutch is turned off, so that the rotational driving force of the starter generator is transmitted from the sun gear to the carrier at a reduced speed, and further reduced via the belt to the internal combustion engine. And is started.
[0007]
When the starter generator is used as a generator by the power of the internal combustion engine, the brake is turned off and the clutch is turned on, so that the pulley and the starter generator are directly connected, and the electromagnetic clutch is turned on, so that the power of the internal combustion engine is turned on. Is transmitted to the starter generator to generate power.
[0008]
When driving accessories using the starter generator when the internal combustion engine is stopped, the brake is turned off, the clutch is turned on, the pulley and the starter generator are directly connected, and the electromagnetic clutch is turned off to reduce the load on the internal combustion engine. Auxiliary equipment can be driven by the starter generator without receiving.
[0009]
[Problems to be solved by the invention]
As described above, when switching between the states, there are three control elements, the electromagnetic clutch, the clutch, and the brake, and the control system is complicated.
[0010]
When the internal combustion engine is started by the starter generator, the rotational driving force of the starter generator is transmitted to the internal combustion engine through two reduction mechanisms, a planetary gear set and a pulley belt. is there.
[0011]
Therefore, if the required torque for starting the internal combustion engine is T, the torque on the output side of the belt is also T, and a considerable load is applied to the belt.
[0012]
For this reason, it is necessary to increase the width of the belt, and the total length of the internal combustion engine becomes longer. Particularly, when the vehicle is mounted on a small vehicle having a limited space in an engine room such as a minicar, it is difficult to ensure collision safety.
[0013]
Further, with the above configuration, when starting the internal combustion engine and when using the starter generator as a generator, it is necessary to always turn on the electromagnetic clutch to energize, and thus there is a contradiction that power is consumed for generating power. Efficiency is reduced.
[0014]
The present invention has been made in view of such a point, and an object thereof is to reduce the load applied to the endless transmission band of the speed reduction mechanism, to make the torque transmission system itself compact, to reduce the size of the internal combustion engine, and to simplify the invention. The point is to provide a starter generator device with high power generation efficiency in a simple control system.
[0015]
Means for Solving the Problems and Functions and Effects
In order to achieve the above object, the present invention provides a method for starting an internal combustion engine by a starter generator connected to an output shaft of the internal combustion engine, and after the start of the internal combustion engine, generating power by the starter generator by the power of the internal combustion engine. A planetary gear set in which a sun gear and a ring gear mesh with a pinion gear supported by a carrier, the carrier is coupled to an output shaft of the internal combustion engine, and a first pocket is provided. The ring gear is connected to a pocket plate, the ring gear is connected to the starter generator and the auxiliary machine through an endless transmission belt so as to be able to transmit power, and the sun gear is integrally formed with a notch plate including a first notch and a second notch. And a first pocket of the pocket plate and a second pocket of the notch plate. A first spring strut capable of engaging / disengaging a notch; a second spring strut capable of engaging / disengaging a second pocket formed in a fixing member and a second notch of the notch plate; A slide plate capable of regulating the function of the second spring strut; and a slide plate control means for driving the slide plate to control engagement / disengagement of the second pocket with the second notch of the second spring strut. Wherein the slide plate control means is a starter / generator device for driving and controlling the slide plate so that the second spring strut can engage the second pocket and the second notch when the internal combustion engine is started.
[0016]
At the time of starting the internal combustion engine, the driving force of the starter generator is controlled by driving the endless transmission band only by controlling the driving of the slide plate to allow the second spring strut to engage and engage the second pocket and the second notch. Through the planetary gear set and transmitted to the internal combustion engine for starting. The speed reduction mechanism using the endless transmission band is located on the starter generator side.
[0017]
Therefore, assuming that the required torque for starting the internal combustion engine is T and the reduction ratio by the planetary gear set is b (> 1), the torque on the output side of the endless transmission band is reduced by the planetary gear set to T / b, The load is reduced to a considerable extent, and it is not necessary to increase the width of the endless drive train, and thus it is not necessary to increase the overall length of the internal combustion engine.
[0018]
In addition, when the starter generator is used as a generator by the power of the internal combustion engine, or when the auxiliary equipment is driven using the starter generator when the internal combustion engine is stopped, the function of the second spring strut is all performed by the slide plate. It is sufficient that the engagement between the second pocket and the second notch is released after the restriction, and the number of control elements is small and the control system can be simplified.
[0019]
When the starter generator is used as a generator, the slide plate is set at a position where the engagement between the second pocket and the second notch is released, so that there is no need to use electric power to operate the slide plate during power generation. High power generation efficiency can be maintained.
Since the endless drive band is used, the degree of freedom of arrangement of the starter generator with respect to the internal combustion engine is large.
[0020]
A structure in which a first spring strut and a second spring strut that transmit torque in one direction between the pocket plate and the notch plate and between the notch plate and the fixing member, respectively, are interposed. The size of the entire internal combustion engine can be reduced.
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 shows an example in which a starter generator device 31 according to the present embodiment is applied to a four-cycle internal combustion engine 1.
[0021]
FIG. 1 is a cross-sectional view showing the structure of the starter generator device 31 and the internal combustion engine.
The end of the crankshaft 2 of the internal combustion engine 1 projects outward from the opening of the chain case 4 that forms the chain chamber 3.
A chain sprocket 5 for transmitting power to a valve train is fitted on the crankshaft 2 in the chain chamber 3.
[0022]
A carrier member 8 is fitted to an end of the crankshaft 2 around the opening of the chain case 4 via a crank key 6, and the carrier member 8 is fastened by a flanged bolt 7 screwed to the end surface of the crankshaft 2. Are integrally fastened to the crankshaft 2.
[0023]
A torque transmission mechanism 10 is provided around the carrier member 8. The actual assembly order is as follows. The torque transmission mechanism 10 is assembled first on the carrier member 8 and the carrier member 8 on which the torque transmission mechanism 10 is assembled. Is fitted to the crankshaft 2.
[0024]
Therefore, the assembling of the torque transmission mechanism 10 will be described in accordance with the assembling order with reference to FIGS.
First, referring to FIG. 2, the carrier member 8 has an inner cylindrical portion 8b fitted to the end of the crankshaft 2 protruding from the inner surface of the hollow disk portion 8a, and a flat outer cylindrical portion 8c having a larger diameter due to the outer surface. It has a shape that protrudes coaxially.
[0025]
An annular outer pocket plate 11 is fixed to the inner surface of the disk portion 8a at the outer peripheral portion of the inner cylindrical portion 8b.
The outer pocket plate 11 has a plurality of recesses formed in a circumferential direction on a surface that is in contact with the inner surface of the disk portion 8a, and a pinion gear 12 inserted into the recess is rotatably supported by a pinion shaft 13. Is provided.
[0026]
The pinion shaft 13 is installed between the outer pocket plate 11 and the disk portion 8a in a direction parallel to the crankshaft 2, and the pinion gear 12 is rotatably supported by the pinion shaft 13 via a bearing.
[0027]
On the inner surface of the outer pocket plate 11 on the opposite side to the disk portion 8a, a plurality of, for example, four first pockets 11a are excavated at equal intervals around the pinion shaft 13 in the circumferential direction.
Further, an extended cylindrical portion 11b is formed in which the outer peripheral edge of the outer pocket plate 11 extends inward.
[0028]
On the other hand, a ring member 16 is provided around the outer peripheral end of the disk portion 8a of the carrier member 8 via a bearing 15 so as to be relatively rotatable.
A pulley 19 is fitted to this outer diameter portion via a damper 18.
[0029]
A ring gear 17 that meshes with the pinion gear 12 is formed inside the bearing 15 at an inner diameter portion of the ring member 16 where the bearing 15 is interposed, and an outer cylindrical portion 8c of the carrier member 8 is formed outside the bearing 15. An annular oil seal 20 is inserted between the two to close the outside of the bearing 15.
[0030]
Therefore, the ring member 16 can rotate relative to the carrier member 8 via the bearing 15 together with the pulley 19 while the ring gear 17 meshes with the pinion gear 12.
[0031]
A notch member 21 is rotatably fitted around the outer periphery of the inner cylindrical portion 8b of the carrier member 8 in such a state as shown in FIG.
The notch member 21 has a circular notch plate 22 extending in a flange shape at the center of the outer peripheral surface of the cylindrical portion fitted to the inner cylindrical portion 8b of the carrier member 8, and a sun gear at the outer end of the cylindrical portion. 23 is formed and meshed with the pinion gear 12.
[0032]
When the sun gear 23 meshes with the pinion gear 12, a planetary gear set in which the sun gear 23 and the ring gear 17 are interlocked via the pinion gear 12 that is supported by the carrier member 8 is configured.
[0033]
The notch plate 22 fits into the extended cylindrical portion 11b of the outer pocket plate 11, is locked by the circlip 24, and the notch member 21 is positioned.
A plurality of, for example, 17 (not divisible by the number of the first pockets 11) first notches 22a are excavated at equal intervals on an outer surface of the circular flange-shaped notch plate 22 which is in contact with the outer pocket plate 11, and are opposed to each other. Seventeen second notches 22b are also excavated at equal intervals in the circumferential direction on the inner surface of the.
[0034]
The 17 first notches 22a and the second notches 22b on both surfaces of the notch plate 22 are substantially in phase with each other so that the struts 25a and 30a described later on both sides are rotated in opposite directions. Is formed.
When the struts 25a (30a) are engaged, the struts 25a (30a) are engaged with any one of the first notches 22a (the second notches 22b).
[0035]
When assembling such a notch member 21, the first spring struts 25 are first installed in the four first pockets 11a on the inner surface of the outer pocket plate 11, respectively.
[0036]
Referring to FIG. 5, a spring strut 25 is configured such that a strut 25a, which is a flat plate having a parallelogram cross section, is fitted in the first pocket 11a so as to be freely retractable, and a spring 25b inserted into the back of the first pocket 11a is a strut. The tip of 25a is urged to swing and project.
[0037]
Therefore, when one of the four first pockets 11a on the inner surface of the outer pocket plate 11 and one of the seventeen first notches 22a on the outer surface of the notch plate 22 match while rotating relative to each other, the spring The tip of the strut 25a urged by 25b swings and projects into the first notch 22a, and the strut 25a is connected to the first pocket 11a of the outer pocket plate 11 and the first notch 22a of the notch plate 22, as shown in FIG. Can be engaged.
[0038]
That is, with respect to the relative rotation indicated by the arrow in FIG. 5, the strut 25a engages so as to be sandwiched between the first pocket 11a and the first notch 22a to transmit the torque. With respect to the rotation, the outer surface of the notch plate 22 obliquely presses the inclined surface of the strut 25a fitted in the first notch 22a, and the strut 25a is immersed in the first pocket 11a against the spring 25b to release the engagement. .
[0039]
As described above, the spring strut 25 is a small, space-saving one-way clutch that prevents relative rotation of the outer pocket plate 11 and the notch plate 22 in one direction and allows relative rotation in the opposite direction.
[0040]
Next, referring to FIG. 4, an annular inner pocket plate 27 is fitted to the inner surface of the notch plate 22 via an annular slide plate 26 on the outer periphery of the cylindrical portion of the notch member 21, and is engaged with the circlip 28. Then, the inner pocket plate 27 is positioned.
[0041]
The slide plate 26 is supported between the outer pocket plate 11 and the inner pocket plate 27 so as to be relatively rotatable, and four openings 26a are formed in the annular plate portion in the circumferential direction. A projection 26b projects from a part of the inner surface through a long hole formed in the outer pocket plate 11.
An actuator 39 acts on the projection 26b from the outside to rotate the slide plate 26.
[0042]
On the outer surface of the inner pocket plate 27 that is in contact with the slide plate 26, four second pockets 27 a are dug at equal intervals in the circumferential direction similarly to the outer pocket plate 11.
A spline 27b is formed on the outer peripheral edge of the inner pocket plate 27.
[0043]
When assembling the inner pocket plate 27, the second spring struts 30 are first installed in the four second pockets 27a on the outer surface of the inner pocket plate 27, respectively.
[0044]
Referring to FIG. 5, the second spring strut 30 is the same as the first spring strut 25, and a strut 30a, which is a flat plate having a parallelogram cross section, is fitted in the second pocket 27a so as to be freely retractable. The spring 30b inserted in the back of the second pocket 27a urges the tip of the strut 30a to swing and project.
[0045]
Therefore, with the opening 26a of the slide plate 26 aligned with the second pocket 27a of the inner pocket plate 27, one of the second pockets 27a on the outer surface of the inner pocket plate 27 and one of the second notches 22b on the inner surface of the notch plate 22. When they come together during the relative rotation of each other, the tip of the strut 30a urged by the spring 30b swings and penetrates through the opening 26a of the slide plate 26 and projects into the second notch 22b, as shown in FIG. Thus, the strut 30a can engage the second pocket 27a of the inner pocket plate 27 with the second notch 22b of the notch plate 22.
[0046]
That is, with the opening 26a of the slide plate 26 being aligned with the second pocket 27a of the inner pocket plate 27, the strut 30a is not moved relative to the rotation of the inner pocket plate 27 and the notch plate 22 in the direction opposite to the arrow in FIG. Engages the second notch 22b between the second pocket 27a and the second notch 22b to transmit torque, but the inner surface of the notch plate 22 is obliquely inserted into the second notch 22b with respect to the relative rotation indicated by the arrow. The strut 30a is pushed into the second pocket 27a against the spring 30b by pressing the inclined surface of the fitted strut 30a to release the engagement.
[0047]
As described above, the spring strut 30 is a small and space-saving one-way clutch that prevents relative rotation of the inner pocket plate 27 and the notch plate 22 in one direction and allows relative rotation in the opposite direction.
[0048]
However, the spring strut 30 functions as a one-way clutch when the opening 26a of the slide plate 26 is aligned with the second pocket 27a of the inner pocket plate 27, and the opening 26a of the slide plate 26 is 27, the slide plate 26 covers the opening of the second pocket 27a, and the strut 30a is housed in the second pocket 27. Therefore, the inner pocket plate 27 and the notch plate 22 are independent of each other. Rotate.
[0049]
That is, by operating the slide plate 26 by the actuator 39, the function of the one-way clutch by the spring strut 30 can be operated or regulated.
[0050]
With the torque transmission mechanism 10 assembled to the carrier member 8 as described above, the carrier member 8 is fitted to the crankshaft 2 and fastened with the flanged bolt 7 as shown in FIG.
[0051]
At this time, the spline 27b on the outer peripheral edge of the inner pocket plate 27 is spline-fitted to the groove on the opening edge of the chain case 4, and the inner pocket plate 27 is fixed.
[0052]
An oil seal 29 is interposed between the annular ridge 4a having a larger diameter than the opening of the chain case 4 and the inner diameter of the ring member 16 to seal the planetary gear set inside to prevent oil leakage. .
[0053]
As described above, in the torque transmission mechanism 10, the outer pocket plate 11 is integrally attached to the carrier member 8, the notch plate 22 is formed integrally with the sun gear 23, and the inner pocket plate 27 is fitted and fixed to the chain case 4. Therefore, the size is considerably reduced.
[0054]
Further, since a small and space-saving one-way clutch using the spring struts 25 and 30 is employed, the torque transmission mechanism 10 is further reduced in size and weight.
[0055]
As shown in FIG. 1, in the starter generator device 31, a belt 32 wound around a pulley 19 provided around the ring member 16 is fitted to an input / output shaft of a starter generator (motor M / generator G) 33. Over the pulley 34 and the pulley 36 fitted to the input shaft of the accessory 35.
[0056]
The starter generator 33 is connected to a battery 38 via an inverter 37, the starter generator 33 is driven as an electric motor by the power of the battery 38, the starter generator 33 functions as a generator by the rotation input of the pulley 34, and the generated power is The battery 38 can be used for charging via the 37.
[0057]
The actuator 39, which is the only control element in the starter generator device 31, is an electromagnetic solenoid, an electric motor, or the like, and is controlled by an electronic control unit (ECU) 40.
[0058]
The electronic control unit 40 receives a detection signal indicating the operating state of the internal combustion engine 1 such as the vehicle speed V and the engine speed Ne and a signal indicating the state of charge of the battery 38 and controls the actuator 39 to rotate the slide plate 26. Then, the function of the one-way clutch by the second spring strut 30 is operated or regulated, and the fuel injection valve 41 and other various drive controls are performed.
[0059]
FIG. 6 shows a schematic configuration diagram of a power transmission mechanism in the present starter generator device 31.
[0060]
In the planetary gear set of the torque transmission mechanism 10, the carrier member 8 is integrally connected to the crankshaft 2, and the notch member 21 integrated with the sun gear 23 is provided between the carrier member 8 (crankshaft 2) and the first spring strut 25. And a second spring strut 30 and a slide plate 26 are interposed between the inner pocket plate 27 and the inner pocket plate 27 spline-fitted to the chain case 4, and the ring member 16 integrated with the ring gear 17 connects the belt 32. The starter generator 33 is interlocked with the starter generator 33.
[0061]
The control procedure of the electronic control unit 40 in the starter generator device 31 is shown in the flowchart of FIG.
[0062]
First, it is determined whether or not to permit idling stop in step 1 in the stop mode of the internal combustion engine 1 and, if so, proceed to step 2 to control the fuel injection valve 41 to stop fuel injection (fuel cut), Next, the slide plate 26 is rotated as shown in FIG. 8 to release the one-way by the second spring strut 30 to be in a free state (step 3).
[0063]
When driving the accessories 35, the starter generator 33 is operated as a motor (step 4).
This is a case where auxiliary equipment 35 such as an air conditioner is driven by a starter generator 33 when the internal combustion engine 1 is stopped. In this state, the one-way by the second spring strut 30 is released as shown in FIG. Since the notch member 21 integral with the sun gear 23 is free and the planetary gear set is in the neutral state, the power of the starter generator 33 is not transmitted to the crankshaft 2 and only the accessories 35 are efficiently used. Can be driven.
[0064]
If the idle stop is not permitted in step 1, the process proceeds to step 5 and the vehicle speed V is set to the predetermined speed V ₀ Is determined to be less than the predetermined speed V ₀ If so, the process jumps to step 9 where the predetermined speed V ₀ If the engine speed Ne is less than the predetermined engine speed Ne, the process proceeds to step 6. ₀ Judge whether it is less than.
[0065]
The engine speed Ne is equal to the predetermined speed Ne. ₀ If so, the process jumps to step 9 where the predetermined rotational speed Ne ₀ If it is less than 1, the process proceeds to step 7, in which the slide plate 26 is rotated as shown in FIG. 10 to make the one-way clutch function by the second spring strut 30, and the process proceeds to step 8 to operate the starter generator 33 as a motor. And the internal combustion engine 1 is started.
[0066]
At this time, as shown in FIG. 11, when the second spring strut 30 functions as a one-way clutch, the starter generator 33 operates as a motor and the ring member 16 rotates via the belt 32, the second spring strut 30 rotates. Since the strut 30 operates the one-way clutch in the locking direction to fix the sun gear 23 (the notch member 21), the driving force of the starter generator 31 is controlled by the crankshaft 2 (the outer pocket plate) via the planetary gear set that operates as a reduction mechanism. 11) is rotated at a reduced speed, and the internal combustion engine 1 is started.
[0067]
Assuming that the required torque for starting the internal combustion engine 1 is T and the reduction ratio by the planetary gear set is b, the torque of the belt 32 on the side of the crank pulley 16 is reduced by the planetary gear set to T / b as described above. Become.
[0068]
For example, if the reduction ratio b is 2, the load applied to the output (planetary gear set) side torque of the belt 32 is T / 2, and the load applied to the belt 32 is considerably reduced.
Since the load applied to the belt 32 is reduced, it is not necessary to increase the width of the belt 32, and thus it is not necessary to increase the total length of the internal combustion engine 1, and the internal combustion engine 1 can be downsized.
[0069]
Next, in step 5 or step 6, the vehicle speed V becomes the predetermined speed V ₀ Or the engine speed Ne is equal to the predetermined speed Ne. ₀ When the determination is made above and the process jumps to step 9, the internal combustion engine 1 is in the driving mode, and it is first determined whether or not there is a request for charging the battery 38.
It is determined whether the battery 38 has room to be charged, that is, whether or not the battery 38 is overcharged.
[0070]
If there is no charge request, there is a risk of overcharging, so jump to step 13 and rotate the slide plate 26 as shown in FIG. 12 to release the one-way by the second spring strut 30 to set it in the free state. 31 does not operate as a generator.
[0071]
If there is a charging request, the process proceeds to step 10, where it is determined whether the vehicle speed is within a regenerative vehicle speed range suitable for operating the starter generator 31 as a generator.
If the vehicle speed exceeds the regenerative vehicle speed range, the rotation of the starter generator 31 is too high to operate the starter generator 31 as a generator. Although in the free state, the starter generator 31 is not operated as a generator.
[0072]
If the vehicle speed is within the regenerative vehicle speed range, the process proceeds from step 10 to step 11, in which the one-way by the second spring strut 30 is released to a free state as shown in FIG. 12, and the starter generator 31 is operated as a generator (step 12).
[0073]
When the one-way by the second spring strut 30 is released to be in a free state while the internal combustion engine 1 is in the driving mode and is driven, the driving force of the internal combustion engine 1 is shown in FIG. As described above, the carrier member 8 integral with the crankshaft 2 is rotated, and the one-way clutch of the first spring strut 25 operates in the locking direction to rotate the sun gear 23 as a unit. Since the crank pulley 16 is rotated via the gear 17, the starter generator 33 and the accessories 35 are driven via the belt 32.
[0074]
Therefore, the starter generator 33 can be operated as a generator to regenerate power and charge the battery 38.
[0075]
In step 8, when the driving force of the starter generator 33 is reduced and the crankshaft 2 is rotated to start the internal combustion engine 1, and when the internal combustion engine 1 enters a complete explosion state in which the crankshaft 2 can be rotated by itself, the engine speed is reduced. Exceeds the rotation of the starter generator 33 and automatically shifts to a state in which regeneration as described above is possible.
[0076]
In the above-described control, when the internal combustion engine 1 is brought into the complete explosion state after the start, the slide plate 26 is rotated to release the one-way by the second spring strut 30 to be in the free state. The one-way clutch function of the second spring strut 30 may be maintained without rotating the slide plate 26.
[0077]
That is, in this case, as shown in FIG. 14, the outer pocket plate 11 (carrier member 8) and the notch plate 22 (sun gear 23) rotate integrally, and the one-way clutch function of the second spring strut 30 is maintained to maintain the notch plate 22. The one-way clutch acts in the unlocking direction with respect to the rotation of, and does not hinder the rotation of the notch plate 22.
[0078]
However, the strut 30a of the second spring strut 30 enters and exits the second notch 22b with the rotation of the notch plate 22, which may cause a troublesome sound or a problem in durability. As described above, it is preferable that the slide plate 26 be rotated to release the one-way by the second spring strut 30 to be in the free state.
[0079]
As described above, since the control element in the starter generator device 31 is only the slide plate 26, the control system can be simplified and the cost can be reduced.
[0080]
Since the belt 32 is used, the degree of freedom in arranging the starter generator 33 with respect to the internal combustion engine 1 is large.
In the above embodiment, a belt is used as the endless transmission belt, but a chain or the like may be used.
[0081]
In the torque transmission mechanism 10 of the starter generator device 31, the notch plate 22 is sandwiched between the outer pocket plate 11 and the inner pocket plate 27, and the first notch 22a and the second notch 22b on both sides of the notch plate 22 Since the rotation directions in which the struts 25a and 30a are engaged are opposite to each other, the function of a one-way clutch is provided, so that one of the pocket plates is in a free state, and at the same time, the pocket plate and the notch plate are free. It can also be in the state of.
[0082]
Various applications are possible as a one-way clutch having such a simple configuration. In addition, a slide plate is provided between at least one of the pocket plates and the notch plate, and the engagement and disengagement between the three components of the outer pocket plate 11, the notch plate 22, and the inner pocket plate 27 can be simplified by arbitrarily controlling the slide plate. Can achieve various torque transmission patterns, and the application range is considerably wide.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view showing a structure of a starter generator device and an internal combustion engine according to an embodiment of the present invention.
FIG. 2 is an initial cross-sectional view showing an assembling structure of a torque transmission mechanism in an assembling order.
FIG. 3 is a cross-sectional view illustrating an assembly structure of a next-stage torque transmission mechanism.
FIG. 4 is a cross-sectional view illustrating an assembling structure of a torque transmission mechanism at a next stage.
FIG. 5 is a cross-sectional view illustrating a structure of a main part of the torque transmission mechanism.
FIG. 6 is a schematic configuration diagram of a power transmission mechanism in the starter generator device 31.
FIG. 7 is a flowchart showing a control procedure in the present starter generator device.
FIG. 8 is a cross-sectional view illustrating a structure of a main part of a torque transmission mechanism in an auxiliary device driving state in an engine stop mode.
FIG. 9 is a schematic configuration diagram of a power transmission mechanism in the same state.
FIG. 10 is a cross-sectional view illustrating a structure of a main part of the torque transmission mechanism in a state at the time of starting.
FIG. 11 is a schematic configuration diagram of a power transmission mechanism in the same state.
FIG. 12 is a cross-sectional view illustrating a structure of a main part of the torque transmission mechanism in a regenerative state in the engine driving mode.
FIG. 13 is a schematic configuration diagram of a power transmission mechanism in the same state.
FIG. 14 is a schematic configuration diagram showing another state of the power transmission mechanism in the regenerative state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Internal combustion engine, 2 ... Crankshaft, 3 ... Chain chamber, 4 ... Chain case, 5 ... Chain sprocket, 6 ... Crank key, 7 ... Bolt with flange, 8 ... Carrier member, 10 ... Torque transmission mechanism, 11 ... Outside Pocket plate, 11a: First pocket, 12: Pinion gear, 13: Pinion shaft, 15: Bearing, 16: Ring member, 17: Ring gear, 18: Damper, 19: Pulley, 20: Oil seal, 21: Notch member , 22 ... notch plate, 22a ... first notch, 22b ... second notch, 23 ... sun gear, 24 ... circlip, 25 ... spring strut, 25a ... strut, 25b ... spring, 26 ... slide plate, 27 ... inner pocket plate , 28 ... circlip, 29 ... oil seal, 30 ... spring strap , 30a ... strut, 30b ... spring, 31 ... starter generator device, 32 ... belt, 33 ... starter generator, 34 ... pulley, 35 ... auxiliary equipment, 36 ... pulley, 37 ... inverter, 38 ... battery, 39 ... actuator, 40 ... Electronic control unit (ECU), 41 ... Fuel injection valve.

Claims (1)

A starter generator device that starts the internal combustion engine by a starter generator connected to an output shaft of the internal combustion engine and generates power by the starter generator by the power of the internal combustion engine after the start of the internal combustion engine.
Equipped with a planetary gear set where the sun gear and the ring gear mesh with the pinion gear supported by the carrier,
The carrier is coupled to an output shaft of the internal combustion engine and coupled to a pocket plate having a first pocket;
The ring gear is connected to the starter generator and the auxiliary machine through an endless transmission band so that power can be transmitted,
The sun gear is integrated with a notch plate having a first notch and a second notch,
A first spring strut capable of engaging and disengaging a first pocket of the pocket plate and a first notch of the notch plate;
A second spring strut capable of engaging and disengaging a second pocket formed in the fixing member and a second notch of the notch plate;
A slide plate capable of regulating the function of the second spring strut;
Slide plate control means for driving the slide plate to control engagement / disengagement of the second notch with the second pocket of the second spring strut;
The starter and generator device according to claim 1, wherein the slide plate control means controls the drive of the slide plate so that the second spring strut can engage the second pocket and the second notch when the internal combustion engine is started.

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