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WO2018033276A1 - Bielle pour un moteur à combustion interne à compression variable - Google Patents

Bielle pour un moteur à combustion interne à compression variable Download PDF

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Publication number
WO2018033276A1
WO2018033276A1 PCT/EP2017/064989 EP2017064989W WO2018033276A1 WO 2018033276 A1 WO2018033276 A1 WO 2018033276A1 EP 2017064989 W EP2017064989 W EP 2017064989W WO 2018033276 A1 WO2018033276 A1 WO 2018033276A1
Authority
WO
WIPO (PCT)
Prior art keywords
connecting rod
rotor
stator
eccentric
hydraulic fluid
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
Application number
PCT/EP2017/064989
Other languages
German (de)
English (en)
Inventor
Sebastian BEUERLEIN
David Huber
Dietmar Schulze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Eco Holding 1 GmbH
Original Assignee
Eco Holding 1 GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Eco Holding 1 GmbH filed Critical Eco Holding 1 GmbH
Publication of WO2018033276A1 publication Critical patent/WO2018033276A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
    • F02B75/00—Other engines
    • F02B75/04—Engines with variable distances between pistons at top dead-centre positions and cylinder heads
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C7/00—Connecting-rods or like links pivoted at both ends; Construction of connecting-rod heads
    • F16C7/06—Adjustable connecting-rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16C—SHAFTS; FLEXIBLE SHAFTS; ELEMENTS OR CRANKSHAFT MECHANISMS; ROTARY BODIES OTHER THAN GEARING ELEMENTS; BEARINGS
    • F16C9/00—Bearings for crankshafts or connecting-rods; Attachment of connecting-rods
    • F16C9/04—Connecting-rod bearings; Attachments thereof

Definitions

  • the invention relates to a connecting rod for an internal combustion engine with variable compression, in particular of a motor vehicle, with an eccentric adjusting device for adjusting an effective connecting rod length, and an internal combustion engine with variable compression with a connecting rod.
  • a high compression ratio has a positive effect on the efficiency of the internal combustion engine.
  • compression ratio is generally understood the ratio of the entire cylinder space before compression to the remaining cylinder space after compression.
  • the compression ratio may only be selected so high that a so-called "knocking" of the internal combustion engine is avoided during full load operation low cylinder filling, the compression ratio with higher values are selected without a "knocking" would occur.
  • the important part load range of an internal combustion engine can be improved if the compression ratio is variably adjustable.
  • systems with variable connecting rod length known which actuate by means of hydraulically or mechanically actuated changeover valves an eccentric adjusting device of a connecting rod.
  • a generic connecting rod is known for example from WO 2013/092364, which discloses a length-adjustable connecting rod for a reciprocating engine, in particular an internal combustion engine, with at least a first and a second rod part, which two rod parts telescopically zoom in and / or into each other.
  • the second rod part forms a guide cylinder and the first rod part a longitudinally displaceable in the guide cylinder piston member.
  • a high-pressure chamber is spanned, in which at least one first oil passage opens, in which at least one valve designed as a control valve is arranged, the actuator by a return spring in a first position and by oil pressure against the force of the return spring in a second position is displaced.
  • WO 2010/108582 A1 discloses a connecting rod, in which an actuating device is arranged in the upper connecting rod eye.
  • the actuator may also be placed on a central rod of the connecting rod and form the first connecting rod as the first connecting rod.
  • the lower connecting rod eye is formed with the center rod of the connecting rod as a second connecting rod element.
  • the connecting rod eye is the part of the connecting rod in which the piston pin is mounted.
  • the actuating device comprises an eccentric, which carries the piston pin and is pivotally mounted in the upper connecting rod eye.
  • the actuating device also comprises an actuating element, which can cause a pivoting of the eccentric about the central axis of the upper connecting rod eye.
  • the piston pin is arranged eccentrically on the eccentric, and a pivoting of the eccentric about the central axis of the upper connecting rod causes a displacement of the piston pin along a circular path about this axis.
  • the actuating element is designed as a swivel motor. Disclosure of the invention
  • An object of the invention is to provide a low-cost, improved connecting rod for a variable compression internal combustion engine with a robust and reliable adjustment mechanism having low space requirements.
  • Another object is to provide an internal combustion engine with such a connecting rod.
  • a connecting rod for an internal combustion engine with variable compression comprising a Pleuel Sciences with at least one connecting rod, a connecting rod cover, and an eccentric adjusting device for adjusting an effective connecting rod length, wherein the eccentric adjusting device is arranged in the Pleuel Sciences and one with at least one lever having cooperating eccentric.
  • An adjustment of the eccentric adjusting device is adjustable by means of a switching valve.
  • the eccentric is pivotable about its axis of rotation and the at least one lever is connected to a guide pin arranged in the connecting rod.
  • the eccentric adjusting device comprises a pivoting motor, which has a rotor mounted in a stator, between at least one rotor blade of the rotor and at least one stator stator of the stator at least a first support chamber and at least one second support chamber are formed, wherein a volume of the first support chamber and a Volume of the second support chamber by an adjustment of rotor against stator complementary to each other are variable.
  • the connecting rod eye of the connecting rod body is groove-shaped with a bolt guide portion between two End portions formed and the guide pin is provided guided therein movable.
  • the connecting rod function is based on the principle known in the art and is operated by mass forces and gas forces, check valves and a mechanical or hydraulic switching valve in two positions for high compression (Ehigh) and low compression (£
  • the eccentric / lever connection of a conventional connecting rod of a variable compression internal combustion engine with its cylindrical support chambers, pistons, and support rods is replaced by a swivel motor system in the connecting rod body.
  • the check valves are integrated as well as the switching valve in a connecting rod cover.
  • a large connecting rod bearing has a groove in the lower part for the hydraulic fluid supply, in particular with engine oil, the adjustment system.
  • the small connecting rod eye of the connecting rod body is not cylindrical, but instead has a groove shape. In this groove-shaped connecting rod eye of the guide pin is movably guided. In the position for low compression (£
  • the stator of the swing motor for example, with two stator blades forms in combination with the rotor with two rotor blades four support chambers, which are separated from each other by the rotor blades and the stator vanes.
  • the swivel motor can be designed in three parts with an additional stator cover, which is separately welded to the connecting rod body or otherwise joined.
  • the rotor is rotatably mounted in the stator.
  • the chambers are sealed by sealing strips against each other and with piston rings to the outside.
  • the introduction of the torque to the swing motor via a bolt which is placed in an eccentric bore of the rotor.
  • Two levers connect the bolt with the guide pin, which in turn is arranged in the groove-shaped connecting rod eye.
  • the guide pin receives a piston pin in a bore.
  • connection rod can also be operated with a hydraulic changeover valve.
  • connecting rod which is the interface to the pistons of an internal combustion engine, compared to a connecting rod according to the prior art only slightly modified.
  • the Pleuel stresses is easy and inexpensive to edit, since a complex processing of cylindrical support chambers in the connecting rod body deleted.
  • the connecting rod assembly is very compact in space and has a low total weight.
  • the connecting rod assembly consists of very few individual components and assembly steps and is therefore well suited for mass production.
  • a lower eccentricity in the rotor can be selected for the same adjustment length of the connecting rod, so as to keep the maximum hydraulic pressures in the support chambers of the slewing motor low.
  • the use of the defined stops prevents unintentional striking of the rotor blades on the stator and thus represents a protective mechanism for the swivel motor system.
  • the use of the defined stops also makes it possible to relieve the adjustment mechanism at maximum loads, in the position for low compression (£
  • the high number of degrees of freedom, such as swivel angle, eccentricity, rotor diameter, number of vanes for adapting the system to the internal combustion engine provides a valuable advantage of the connecting rod according to the invention represents.
  • a continuous lubrication of the bearing point of the guide pin in the groove-shaped connecting rod eye can be easily realized by the resulting cavity via two holes in the connecting rod. It can be used advantageous oil of the existing piston lubrication.
  • the swivel motor system can be replaced by an eccentric and the eccentric torque can be intercepted via a further pair of levers in a linear movement.
  • the linear movement allows the use of a double acting support piston or two separate support pistons.
  • the necessary piston guide can be accommodated in the connecting rod body.
  • the advantage over a double-acting piston is the additional use of an eccentric, which conducts most of the load in the Pleuel Sciences and only supports the adjusting torque of the eccentric on an oil column. This results in much lower pressures in the support chambers.
  • the bolt guide portion may be formed at least partially with straight bolt guide surfaces.
  • the guide pin in the connecting rod along the bolt guide portion perform a linear movement, which is a favorable Changing the connecting rod length for a change in the compression of the internal combustion engine can be achieved.
  • the eccentric can be arranged in the rotor of the rotary motor and actuated by the rotor. This makes it possible to achieve a very compact design of the connecting rod. Also, the power transmission is given directly from the swing motor to the eccentric. The eccentric adjustment device can be operated very efficiently and compactly.
  • At least one hydraulic fluid line for supplying hydraulic fluid into the first support chamber of the swing motor and at least one hydraulic fluid line for supplying hydraulic fluid into the second support chamber of the swing motor may be provided in the connecting rod body.
  • the hydraulic fluid can be advantageously fed directly to the support chambers of the swing motor.
  • the connecting rod body is simple and inexpensive to machine to produce the hydraulic fluid lines.
  • the connecting rod assembly can be done in simple and few assembly steps.
  • At least one stop for limiting an axial movement of the guide pin may be provided in the connecting rod body, wherein in particular the respective end portion of the connecting rod end forms the stop.
  • an upper stop and a lower stop can be provided in the connecting rod eye.
  • the first and / or the second support chamber by at least one on a running surface of the rotor and / or a Tread of the stator arranged sealing strip against each other to be sealed.
  • the first and / or the second support chamber may be sealed against an environment by at least one sealing element arranged at least partially on an outer circumference of the rotor and / or an inner circumference of the stator.
  • the stator can have on at least some regions at least two radial circumferential grooves on an outer circumference for supplying the first and the second support chamber with hydraulic fluid.
  • the hydraulic fluid can be conveniently passed into the support chambers without additional hydraulic fluid lines must be present.
  • the swing motor can be operated safely and the risk of inadequate supply of hydraulic fluid can be prevented.
  • the at least one rotor blade can be fastened to the rotor.
  • the rotor can comprise several individual parts. For example, in a built rotor, the rotor blades may be screwed or pressed.
  • the pivoting motor can be manufactured and assembled at a favorable price overall. It is also possible to use identical parts for different types of swivel motors with a different number of rotor blades, as a result of which the cost of the swivel motor can be advantageously influenced.
  • the swivel motor can be at least two Have rotor blades and two stator blades, which are each spaced apart by an equal angular distance with respect to a rotational axis of the pivot motor.
  • the swivel angle can be chosen so low through a different design of the swing motor via a different number of support chambers.
  • advantages for the support surface can be achieved.
  • a smaller eccentricity can be selected in the rotor so by the feasibility of larger swivel angle, for example, for the same adjustment length of the connecting rod, which can favorably influence the maximum hydraulic pressures in the support chambers.
  • a gap for lubrication may be provided between connecting rod and guide pin.
  • the bearing point between connecting rod eye and guide pin can be conveniently supplied with hydraulic fluid, in particular with engine oil for effective lubrication, which can reduce the wear on guide pin and connecting rod advantageously.
  • At least one check valve can be provided in the hydraulic fluid line between the first support chamber and a supply connection and / or at least one check valve in the hydraulic fluid line between the second support chamber and the supply connection.
  • the check valves may advantageously be arranged so that only hydraulic fluid can flow from the supply port into the respective support chamber, and not vice versa.
  • the supply of the support chambers can be done very effectively with hydraulic fluid.
  • the switching valve and the at least one check valves may be arranged in the connecting rod cover.
  • one check valve can be provided in each of the two hydraulic fluid lines between the two support chambers and the supply connection, which can be arranged with the changeover valve in the connecting rod cover.
  • the connecting rod can be constructed very compact.
  • the function of Changeover valve and check valve in the connecting rod cap must be tested separately before installation and checked for possible leakage. As a result, quality assurance in production can be improved favorably.
  • a groove for supplying the changeover valve with hydraulic fluid from the supply connection may be provided on a circumference of a Hublagerauges arranged at least partially in the connecting rod cover at least in the region of the connecting rod cover.
  • the supply of the support chambers of the swing motor can be ensured with hydraulic fluid in a suitable manner.
  • the stroke bearing eye must be weakened in this way as little as possible by a hydraulic fluid line mechanically in its structure, which has a favorable effect on the life.
  • the eccentric adjusting device can be driven by mass forces and gas forces of an internal combustion engine.
  • a rotation of the adjustable eccentric adjusting device is initiated by the action of mass and gas load forces of the internal combustion engine, which act on the eccentric adjusting device at a power stroke of the internal combustion engine.
  • the rotary movement or adjusting movement is assisted by one or more hydraulic fluid, in particular engine oil, imparted rotor blades arranged in the swivel motor, or the rotor blades prevent the eccentric adjusting device from returning due to varying directions of force acting on the eccentric adjusting device.
  • a variable compression internal combustion engine with a connecting rod is proposed.
  • the connecting rod may be formed as described above with a pivot motor for driving the eccentric adjusting device, in particular the guide pin via an eccentric with levers. This can advantageously achieve a more stable and cheaper operation of the internal combustion engine. In particular, you can Torque and power curve of the internal combustion engine and consumption and exhaust emissions of the engine are favorably influenced.
  • Figure 1 shows a connecting rod according to the invention in an exploded view.
  • Fig. 3 the connecting rod of Figure 2 in plan view.
  • Fig. 4 shows the connecting rod of Fig. 2 in longitudinal section A-A in Fig. 2 with
  • FIG. 5 shows the connecting rod according to FIG. 2 in longitudinal section B-B in FIG. 4 with cut planes C-C and D-D with enlarged section Y;
  • Fig. 6 shows the connecting rod of Fig. 2 in longitudinal section C-C in Fig. 5 with enlarged
  • Section X the connecting rod of Figure 2 in longitudinal section DD in Figure 5 with enlarged section W. the connecting rod of Figure 2 in a part of a further longitudinal section with enlarged section V. the connecting rod of Figure 2 in a part of a further longitudinal section with enlarged section Q;
  • FIG. 10 shows the swivel motor in the enlarged section Z in FIG. 4;
  • FIG. Fig. 1 1, the pivot motor in the enlarged section X in Fig. 6;
  • FIG. 12 shows the swivel motor in the enlarged section W in FIG. 7;
  • FIG. 13 shows the switching valve in the enlarged detail Y in FIG. 5;
  • Fig. 1 6 the connecting rod of Fig. 1 in the position for low compression (£
  • Fig. 17 the connecting rod of Figure 16 in plan view.
  • FIG. 18 shows the connecting rod according to FIG. 16 in a longitudinal section AA in FIG. 16 with a section plane BB drawn in with an enlarged section Z;
  • the connecting rod of Figure 16 in a part of a further longitudinal section with enlarged section V.
  • the connecting rod of Figure 16 in a part of a further longitudinal section with enlarged section Q;
  • FIG. 26 shows the swivel motor in the enlarged section W in FIG. 21;
  • FIG. 27 shows the switching valve in the enlarged section Y in FIG. 19;
  • FIG. 29 shows the switching valve and the other non-return valve in the enlarged section Q in FIG. 23.
  • FIG. 1 shows the connecting rod 1 according to the invention in an exploded view, while in the figures 2 to 9 different longitudinal sections of the connecting rod 1 in the position for high compression (£ high ) are shown.
  • FIGS. 10 to 12 show corresponding longitudinal sections of the swivel motor 11 in an enlarged section, while FIGS. 13 to 15 show corresponding longitudinal sections of the reversing valve 9 and the check valves 18 in an enlarged section.
  • Figures 1 6 to 23 the corresponding longitudinal sections of the connecting rod 1 in the position for low compression (£
  • Figures 24 to 26 show corresponding longitudinal sections of the pivot motor 1 1 in an enlarged section, while in Figures 27 to 29 corresponding longitudinal sections of the switching valve 9 and the check valves 18 are shown in enlarged section.
  • the connecting rod 1 for an internal combustion engine with variable compression comprises a Pleuel Sciences 2 with a connecting rod 3 and a connecting rod cover 6.
  • An eccentric adjusting device 4 for adjusting an effective connecting rod 5 is disposed in the Pleuel Sciences 2 and has one with at least one, preferably two levers. 7 , 8 cooperating eccentric 10 on.
  • An adjustment of the eccentric adjusting device 4 is adjustable by means of a switching valve 9, wherein the eccentric 10 is pivotable about its axis of rotation and the at least one lever 7, 8 is connected to a guide pin 21 arranged in the connecting rod 3.
  • the eccentric adjusting device 4 has a swivel motor 1 1, which has a rotor 13 mounted in a stator 12, wherein between at least one rotor blade 14 of the rotor 13 and at least one stator blade 15 of the stator 12th at least one first support chamber 1 6 and at least one second support chamber 17 are formed.
  • a volume of the first support chamber 1 6 and a volume of the second support chamber 17 are mutually variable by an adjustment of the rotor 13 against the stator 14.
  • the connecting rod 3 of the connecting rod 2 is not cylindrical, but groove-shaped with a bolt guide portion 36 between two end portions 38, 39 is formed.
  • the guide pin 21 is movably guided therein.
  • the bolt guide portion 36 is formed with straight bolt guide surfaces.
  • the effective connecting rod length 5, as shown in Figure 3, the distance between the center of the connecting rod 3 and the center of the Hubageres 19.
  • Between connecting rod 3 and guide pin 21 is a gap 34 for lubrication during movement of the guide pin 21 in the pin guide portion 36th intended. In this way, the guide pin 21 can be lubricated advantageous, which reduces the abrasion during movement and thus increases the life of the connecting rod 1.
  • the stator 12 of the swivel motor 1 1 forms formed with two stator blades 15, in combination with the rotor 13 with two rotor blades 14 four support chambers 1 6, 17, which are separated from each other by the rotor blades 14 and the stator 15.
  • the swivel motor 1 1 can also be designed in three parts with an additional stator cover, which is welded separately to the connecting rod 2 or otherwise joined.
  • the rotor blades 14 can also be fastened to the rotor 13 - for example screwed - be formed.
  • the stator 12 is inserted with the rotor 13 in the Pleuel Sciences 2 and welded, for example, on the front side.
  • the stator 12 has on its outer circumference 54 at least partially two radial circumferential grooves 22, 23, each having two inlet bores 24, 25 to the support chambers 1 6, 17 and the connection between the support chambers 16, 17 and supply and discharge lines 31, 32 to the hydraulic fluid supply in the connecting rod body 2 ensure.
  • the swing motor 1 as shown in the embodiment, at least two rotor blades 14 and two stator blades 15 which are each spaced apart by a same angular distance with respect to a rotation axis of the swing motor 1 1.
  • the swivel motor 1 1 may also have three rotor blades 14 and three stator blades 15 or alternatively only one rotor and one stator blades 14, 15.
  • the rotor 13 is rotatably supported in the stator 12.
  • the support chambers 1 6, 17 are sealed by sealing strips 26, 27 against each other and with sealing elements 28, 29 in the form of piston rings to the outside.
  • the first and the second support chamber 1 6, 17 are so sealed by the arranged on a running surface 44 of the rotor 1 3 and a tread 46 of the stator 12 sealing strip 26, 27 against each other.
  • the first and the second support chamber 1 6, 17 are further sealed by the partially disposed on an outer periphery 50 of the rotor 13 and an inner periphery 52 of the stator 12 sealing element 28, 29 against the environment.
  • the eccentric 10 is arranged in the rotor 13 of the swing motor 1 1 and actuated by the rotor 13.
  • two levers 7, 8 connect the bolt 30 to the guide pin 21, which in turn is arranged in the groove-shaped connecting rod eye 3.
  • the guide pin 21 receives a piston pin in a bore.
  • the connecting rod function is based on the principle of a variable compression connecting rod known in the art and is operated via mass forces and gas forces, check valves 18 and the mechanical or hydraulic changeover valve 9 in two high compression (Ehigh) and low compression (£
  • the eccentric adjusting device 4 is driven by the mass forces and gas forces of the internal combustion engine.
  • 0W ) and high compression (£ high) can be locked and so set the effective connecting rod length 5 for this operation of the internal combustion engine.
  • At least one check valve 18 is provided in the hydraulic fluid line 31 between the first support chamber 16 and a supply port and at least one check valve 18 in the hydraulic fluid line 32 between the second support chamber 17 and the supply port.
  • the check valves 18 are integrated into the connecting rod cover 6 as well as the switching valve 9, which is designed mechanically here, as can be seen in FIGS. 4 and 18.
  • the large connecting rod bearing as a crank bearing eye 19 preferably has a groove 20 in the lower part for the oil supply of the system, which has advantages in terms the bearing load.
  • the groove 20 for supplying the switching valve 9 with hydraulic fluid from the supply connection is provided on a circumference of the lifting bearing eye 19 arranged at least partially in the connecting rod cover 6, at least in the region of the connecting rod cover 6.
  • a groove for supplying the Schenkmotors 1 1 with hydraulic fluid can be omitted so that the carrying capacity of the Hublagerauges 19 can be favorably influenced.
  • the use of the defined stops 40, 42 also allows relief of the adjustment mechanism 4 at maximum loads , in the position for low compression (£
  • the locking element 62 shown in the Embodiment, a ball is biased by a spring element 66, for example a compression spring.
  • the lateral movement of the tappet 60 is limited by a positioning element 68 guided in a recess 72.
  • the tappet 60 has flow holes 70, which open the hydraulic fluid lines 31, 32 depending on the position of the tappet 60 a hydraulic fluid flow.
  • the hydraulic fluid passage 32 In the high compression position (Emgh), as shown in Fig. 15, for example, the hydraulic fluid passage 32 is opened, while in the low compression position (£
  • the other hydraulic fluid line 31, 32 is then closed in each case.
  • FIGS. 14 and 15, or 28 and 29, also show the corresponding non-return valves 18 in an enlarged section.
  • a check valve 18 and in the hydraulic fluid line 32 between the second support chamber 17 of the swing motor 1 1 and the supply port a further check valve 18 is provided.
  • the check valve 18 in each case comprises a valve body 80, in which the closing element 82, in the embodiment, a ball, is guided.
  • the closing element 82 is prestressed with a spring element 84, for example a compression spring, and pressed into a valve seat (not illustrated).
  • the closing element 82 closes a hydraulic fluid line 56, or 58, which is in hydraulic communication with the supply connection, or the groove 20 in the lifting eye 19.
  • the connected support chambers 1 6, 17 of the swing motor 1 1 can be conveniently filled with hydraulic fluid
  • the check valves 18 each prevent the corresponding support chamber 16, 17 is at least partially emptied during filling by flowing back the hydraulic fluid.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

L'invention concerne une bielle (1) pour un moteur à combustion interne à compression variable. La bielle comprend un corps (2) pourvu d'au moins une tête (3) de bielle, un chapeau (6) de bielle, et un dispositif de réglage (4) à excentrique pour le réglage d'une longueur effective (5) de la bielle. Le dispositif de réglage (4) à excentrique est agencé dans le corps (2) de la bielle et comprend un excentrique (10) coopérant avec au moins un levier (7, 8), l'excentrique (10) pouvant pivoter autour de son axe de rotation et le ou les leviers (7, 8) étant reliés à une broche guide (21) agencée dans la tête (3) de la bielle. Le dispositif de réglage (4) à excentrique comporte un moteur oscillant (11), lequel comprend un rotor (13) monté dans un stator (12). La tête (3) de bielle du corps (2) de bielle est en forme de rainure et comprend une partie de guidage de broche (36) entre deux parties d'extrémité (38, 39) et la broche guide (21) est guidée mobile dans celle-ci.
PCT/EP2017/064989 2016-08-16 2017-06-20 Bielle pour un moteur à combustion interne à compression variable Ceased WO2018033276A1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE102016115149 2016-08-16
DE102016115149.1 2016-08-16
DE102017107682.4A DE102017107682A1 (de) 2016-08-16 2017-04-10 Pleuel für eine Brennkraftmaschine mit variabler Verdichtung
DE102017107682.4 2017-04-10

Publications (1)

Publication Number Publication Date
WO2018033276A1 true WO2018033276A1 (fr) 2018-02-22

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DE (2) DE102017107682A1 (fr)
WO (1) WO2018033276A1 (fr)

Cited By (1)

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Publication number Priority date Publication date Assignee Title
CN113530958A (zh) * 2020-04-17 2021-10-22 伊希欧1控股有限公司 用于具有可变压缩比的内燃机的连杆

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Publication number Priority date Publication date Assignee Title
DE102020002457A1 (de) * 2020-04-23 2020-06-10 FEV Group GmbH Pleuel einer Verbrennungskraftmaschine zum Ändern eines Verdichtungsverhältnisses

Citations (6)

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Publication number Priority date Publication date Assignee Title
GB473887A (en) * 1936-04-15 1937-10-15 Yasusaburo Hironaka Improvements in and relating to an internal combustion engine with means for varyingthe compression ratio
WO2010108582A1 (fr) 2009-03-26 2010-09-30 Ixetic Bad Homburg Gmbh Dispositif destiné à faire varier le rapport de compression dans un moteur à combustion interne
WO2013092364A1 (fr) 2011-12-23 2013-06-27 Avl List Gmbh Bielle de moteur à pistons alternatifs
DE102012112434A1 (de) * 2012-12-17 2014-06-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pleuelstangenanordnung sowie Verfahren zum Entlüften eines Hydraulikzylinders einer derartigen Pleuelstangenanordnung
WO2015172168A1 (fr) * 2014-05-12 2015-11-19 Imt-C Innovative Motorfahrzeuge Und Technologie - Cooperation Gmbh Bielle pour un moteur à combustion interne
WO2015179112A1 (fr) * 2014-05-20 2015-11-26 Borgwarner Inc. Système de bielle à taux de compression variable avec actionneur rotatif

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB473887A (en) * 1936-04-15 1937-10-15 Yasusaburo Hironaka Improvements in and relating to an internal combustion engine with means for varyingthe compression ratio
WO2010108582A1 (fr) 2009-03-26 2010-09-30 Ixetic Bad Homburg Gmbh Dispositif destiné à faire varier le rapport de compression dans un moteur à combustion interne
WO2013092364A1 (fr) 2011-12-23 2013-06-27 Avl List Gmbh Bielle de moteur à pistons alternatifs
DE102012112434A1 (de) * 2012-12-17 2014-06-18 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Pleuelstangenanordnung sowie Verfahren zum Entlüften eines Hydraulikzylinders einer derartigen Pleuelstangenanordnung
WO2015172168A1 (fr) * 2014-05-12 2015-11-19 Imt-C Innovative Motorfahrzeuge Und Technologie - Cooperation Gmbh Bielle pour un moteur à combustion interne
WO2015179112A1 (fr) * 2014-05-20 2015-11-26 Borgwarner Inc. Système de bielle à taux de compression variable avec actionneur rotatif

Cited By (1)

* Cited by examiner, † Cited by third party
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CN113530958A (zh) * 2020-04-17 2021-10-22 伊希欧1控股有限公司 用于具有可变压缩比的内燃机的连杆

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