WO2011107130A1 - Procédé pour faire fonctionner une machine à piston alternatif - Google Patents

Procédé pour faire fonctionner une machine à piston alternatif Download PDF

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Publication number
WO2011107130A1
WO2011107130A1 PCT/EP2010/007363 EP2010007363W WO2011107130A1 WO 2011107130 A1 WO2011107130 A1 WO 2011107130A1 EP 2010007363 W EP2010007363 W EP 2010007363W WO 2011107130 A1 WO2011107130 A1 WO 2011107130A1
Authority
WO
WIPO (PCT)
Prior art keywords
lever
reciprocating engine
lever element
adjusting device
compression ratio
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/EP2010/007363
Other languages
German (de)
English (en)
Inventor
Tlimann RÖMHELD
Michael Wagenplast
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.)
Mercedes Benz Group AG
Original Assignee
Daimler AG
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 Daimler AG filed Critical Daimler AG
Publication of WO2011107130A1 publication Critical patent/WO2011107130A1/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
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
    • 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
    • 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
    • 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
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length

Definitions

  • the invention relates to a method for operating a reciprocating engine specified in the preamble of claim 1. Art and a method for operating a reciprocating engine specified in the preamble of claim 15 Art.
  • WO 2007/092168 A2 discloses an internal combustion engine with an adjustable compression ratio. To set the compression ratio is a
  • crankshaft of the internal combustion engine mounted on an eccentric carrier, whereby the position of the axis of rotation of the crankshaft in a crankcase of the
  • the eccentric carrier is actuated via a fork of a hydraulic actuator.
  • This internal combustion engine has further potential for representing efficient operation.
  • Transmitter provided whose movement is manipulated by a control lever, with the aim of ensuring a controllable movement of the piston, in particular to allow a variation of the compression ratio.
  • Reciprocating internal combustion engine has potential for representing even more efficient operation.
  • US 2007/0150164 A1 discloses an internal combustion engine with a variable compression ratio and a method for operating such
  • An internal combustion engine which is adapted to be operated with one of a plurality of compression ratios selectable compression ratio. This combustion engine also has further potential for making its operation more efficient.
  • a reciprocating internal combustion engine which also has a device for adjusting the compression ratio during operation.
  • This internal combustion engine has as a connection between the piston and the crankshaft on a rack which rolls with its teeth on a gear or toothed segment, which in turn with its teeth on a
  • Rolling control rack and is rotatably mounted on a mounted on the crankshaft connecting rod.
  • the control rack is slidably mounted in the housing of the internal combustion engine in its longitudinal direction, so that by moving the
  • Control rack in the longitudinal direction the compression ratio can be changed.
  • the displacement of the control rack can be obtained, for example, hydraulically.
  • the high gas and mass forces of the reciprocating internal combustion engine require a very robust toothing and can expect a strong noise and lack of durability.
  • An inventive method for operating a reciprocating engine in which at least one bearing on a crank pin of a crankshaft and with a corresponding connecting rod connected lever element by means of a
  • corresponding adjusting device for adjusting the compression ratio of the reciprocating engine is set between at least two rotational positions relative to the crank pin, wherein the lever element is articulated on the one hand to the connecting rod and on the other hand with the adjusting device, characterized in that the
  • Lever element is adjusted by an at least substantially translational movement of the adjusting device between the at least two rotational positions and that the adjusting device at least indirectly to a crankcase of the
  • Reciprocating piston pivotally supported about a pivot axis.
  • the adjustment of at least two mutually different compression ratios by adjusting the lever element between at least two rotational positions as a result of rotation of the lever member relative to the crank pin around it by means of the adjusting device allows the representation of a very efficient operation of
  • the inventive method allows a compression ratio of a corresponding to the crank pin and the lever member of the cylinder
  • the inventive method has the advantage that a
  • Reciprocating machine thereby has a low number of parts and thus low costs and low weight and low space requirement, which also favors the efficient operation.
  • At least one detection device of the reciprocating engine which is, for example, a knock sensor, which is associated with the corresponding and corresponding to the lever element working space.
  • the signal characterizing the combustion is detected by means of at least one pressure sensor of the reciprocating piston engine associated with the lever element or the corresponding working space, whereby a
  • the inventive method thus provides additional degrees of freedom for adjusting the compression ratio of the reciprocating engine, in particular for
  • lever element in response to a temperature and / or pressure of the lever element associated working space of the
  • Adjust reciprocating piston engine In the working space does not have to necessarily a combustion happen, so the corresponding work space does not necessarily have to be operated fired. It is also possible that, for example due to a fuel cut no combustion takes place, but it is nevertheless extremely advantageous, even in such operating conditions, for example in a push operation to adjust the corresponding compression ratio to the temperature and / or pressure of or in the work space to the fuel consumption to lower the reciprocating engine and their emissions. In overrun mode, this means that by adjusting the
  • a compression work of the non-fired working space can be adjusted, so as to set, for example, an engine braking effect or corresponding losses of the reciprocating engine. Furthermore, it is possible to operate one of the workrooms unfired, while another working space is operated to maintain, for example, an operating temperature of the reciprocating engine associated exhaust aftertreatment device, in particular a catalyst, resulting in a maintenance of a purification of exhaust gas of the reciprocating engine and thus low exhaust gas values leads, in particular in an adjoining the thrust operation, fired operation of all work spaces.
  • the inventive method also allows a workspace-selective
  • Fuel consumption At the same time, it is possible to introduce fuel into at least one further working space, for example to inject it, by a certain amount
  • Exhaust after-treatment devices maintain, or increase or adjust.
  • the compression ratio is reduced by adjusting the lever element. For example, if a working space cooled by a corresponding cooling device worse, so it has a higher temperature, the compression ratio for this work space can be reduced to bring this working space to a best point to represent a very efficient operation of the working space and thus the entire reciprocating engine.
  • the temperature of the working space can also refer to a temperature of a component forming the working space.
  • the temperature in or of the working space can also refer to the temperature prevailing in the working space and detected by means of a detection device.
  • lever element is set as a function of a power stroke of a piston of the reciprocating piston engine assigned to the lever element, this means
  • Compression ratio makes it possible to adjust the respective lever element in a favorable operating point, operating range, operating cycle or the like independently and optionally with a time delay.
  • the lever element is set to adjust the compression ratio when one of the
  • Actuator on the lever member for adjusting the lever member to be applied actuating force causes the same movement of the lever member, as one of the connected to the lever member connecting rod to the lever element force applied.
  • This force applied by the connecting rod to the lever element for example due to combustion processes in the working space, in particular the cylinder,
  • Lever element and further applied to the adjusting device wherein this force is detected for example by means of a detection device.
  • the force applied by the connecting rod to the lever element of the force of the adjusting device which is used up on the lever element, supported or possibly amplified.
  • the adjusting device must apply only small actuating forces in order to adjust the lever element, since to be set by the adjusting device rotational position of the lever member and a
  • the compression ratio is increased by adjusting the lever element by means of the adjusting device when a tensile force is applied by the connecting rod to the lever element. Furthermore, advantageously, the compression ratio is reduced by adjusting the lever element when moving from the connecting rod to the lever element.
  • Lever element is applied a compressive force.
  • Lever element in the setting of a rotational position rotates, in the longitudinal extent of the lever member between the force applied by the connecting rod to the lever member and the force applied by the actuator to the lever element actuating force, it is advantageous if a pressure force is exerted on the lever element of the adjusting device when a tensile force is applied to the lever element from the connecting rod and vice versa. This is extremely advantageous if these balance of power present and cause the desired adjustment of the lever member to adjust the desired compression ratio. Nevertheless, it is possible by means of the adjusting device to apply a force to the lever element, which counteracts the force applied by the connecting rod to the lever element. This is the case, for example, if the desire exists, a certain rotational position of the
  • Lever element in a direction of rotation would cause which of the desired
  • the lever element is adjusted in response to a load of the reciprocating engine, which creates a further degree of freedom to represent a very efficient operation and thus to reduce fuel consumption and thus the C0 2 emissions of the reciprocating engine.
  • a particularly precise, efficient and cost-effective adjustment of the lever element is realized in that the lever element is adjusted for example via a threaded spindle of the adjusting device and / or by a hydraulic actuation of the adjusting device.
  • the adjusting device has, for example, a cylinder with at least one working space in which a piston is axially displaceably received relative to the cylinder and connected to a rod, wherein the working space, for example, divided by the piston into two acted upon by a working medium and having a respective volume control spaces is.
  • the invention also includes a method for operating a reciprocating piston engine, in which at least one lever element mounted on a crankpin of a crankshaft and connected to a corresponding connecting rod by means of a
  • corresponding adjusting device for adjusting the compression ratio of the reciprocating engine is set between at least two rotational positions relative to the crank pin, wherein the lever element is articulated on the one hand to the connecting rod and on the other hand with the adjusting device.
  • Rotary positions is adjusted relative to the respective crank pin and that the actuator is at least indirectly pivotally supported on a crankcase of the reciprocating engine about a pivot axis.
  • Advantageous embodiments of the second aspect of the invention are to be regarded as advantageous embodiments of the first aspect of the invention and vice versa.
  • the method of the second aspect of the invention also enables the representation of a very efficient and thus
  • This shutdown means stopping the fuel supply in at least one working space, it being possible to terminate the fuel supply in at least one working space, while further introduced in at least one other working space of the reciprocating engine fuel, in particular injected.
  • FIG. 1 is a perspective and partially sectioned view of a crank mechanism of a reciprocating engine with a crankshaft with four crank pins, on each of which a connected with a corresponding connecting rod lever member is mounted, each of the lever elements is assigned a hydraulically actuated and a translational movement executable actuator, by means of which the respective lever element for adjusting the compression ratio of the reciprocating engine is set between at least two rotational positions relative to the respective crank pin;
  • Fig. 2 is a perspective and partially sectioned view of a with a
  • Fig. 3 is another perspective view of the conrod and the
  • Fig. 4 is a partially sectioned plan view of the conrod and the
  • Fig. 5 is a sectional view of an adjusting device according to the preceding
  • FIG. 6 shows five longitudinal sectional views of the adjusting device according to FIG. 5 in FIG.
  • the crankshaft 12 has four crank pins 14, on each of which a lever element 6 is mounted, so that the lever elements 16 can rotate relative to the respective crank pins 14.
  • the lever elements 16 are each pivotally connected to a connecting rod 18 and designed as a transverse lever, which extend transversely to the axis of rotation of the crankshaft 12.
  • the connecting rods 18 in turn each have a connecting rod 22, via which the respective connecting rod 22 with a piston of the reciprocating piston displaceably arranged in a cylinder of the reciprocating engine is connectable.
  • the pistons of the reciprocating engine due to gas expansions by combustion of a fuel-air mixture in the respective cylinder through translational movements, which transmitted via the connecting rods 18 and the lever members 16 on the crank pin 14 and on to the crankshaft 12 and in a rotational movement of the crankshaft 12 are converted, so that the crankshaft 12 according to a direction arrow 20 rotates about its axis of rotation.
  • each actuating element 24 is associated with each lever element 16, which is connected in an articulated manner to the respective lever element 16.
  • the lever elements 16 By means of the adjusting devices 24, the lever elements 16 between at least two rotational positions relative to the respective crank pin 14 rotatable about this. This causes an adjustment of a final volume, which is also referred to as compression volume, in the respective cylinder at top dead center of the respective piston, since the rotational position of the lever elements 16 relative to the respective crank pin 14 affects the translational position of the bottom and top dead center of the piston in the cylinder , An enlargement of the
  • Compression volume leads to a reduction of the compression ratio and / or vice versa.
  • the adjusting devices 24 perform a translational movement, which causes a rotation of the respective lever member 16 relative to the respective crank pin 14 about this.
  • the function of the actuators 24 is based on a
  • FIGS. 2 to 5 show the adjusting device 24, which has a working space 26
  • Hydraulic cylinder 28 includes. In the hydraulic cylinder 28 and its working space 26, a displaceable piston 30 is arranged, which is fixedly connected to a push rod 32.
  • the piston 30 divides the working space 28 into a first, in the Fig. 2 upper control chamber 34 and a lower, in Fig. 2, the second control chamber 36, wherein the control chambers 34 and 36 have a respective volume, which with a working medium in the form of Lubricating oil of the reciprocating engine can be acted upon.
  • the piston 30 and thus the push rod 32 is in a first end position in which the volume of the control chamber 34 is minimal and the volume of the control chamber 36 is maximum. In this case, the volume of the control chamber 36 is filled with the lubricating oil, while the control chamber 34 at least almost no
  • Adjusting device 24 moved out of the first end position shown in FIG. 2 and the piston 30 are moved in the direction of a surface 38. This means that the volume of the control chamber 36 has to be reduced and the volume of the control chamber 34 has to be increased. For this purpose, the lubricating oil has to be removed from the control chamber 36 and lubricating oil introduced into the control chamber 34.
  • channels 40, 42, 44 and 46 are provided through which the lubricating oil can flow.
  • the channels 40, 42 and 44 are releasable and closable by corresponding control edges 48, 50 and 52 of a partially received in the push rod 32 control piston 54.
  • further lubricating oil via the channel 46 in the Flow control chamber 34, which lubricating oil via a shaft 62 can be fed.
  • the channel 46 is connected to a lubricating oil supply of the reciprocating engine and ensures the supply of the adjusting device 24 with sufficient working fluid in the form of lubricating oil.
  • Corresponding control valves in the form of check valves 56, 58 and 60 prevent an undesirable flow of lubricating oil.
  • the adjusting device 24 can in particular by using the check valves 56, 58 and 60 additional means for pressure enhancement of the lubricant, ie
  • Control chambers 34 and / or 36 pumps are controlled by Control chambers 34 and / or 36 pumps.
  • the adjusting device 24 performs a translational movement, it has the further advantage that it has only a small space requirement while achieving a very precise adjustment of the compression ratio, whereby the reciprocating engine can be adapted very precisely to different operating points and thus a very efficient Operation possible.
  • crank mechanism 10 and thus the reciprocating engine further have the advantage that the lever elements 16 can be adjusted independently of one another by the adjusting devices 24, as a result of which
  • Compression ratio of each cylinder is selectively adjustable.
  • the adjusting device 24 perform movements of the lever member 16 and movements of the reciprocating engine with and possibly compensate, it is pivotally held about the rotatably supported on a crankcase of the reciprocating engine shaft 62 and thus pivotally and indirectly supported on the crankcase.
  • the shaft 62 is fixed inter alia by fasteners 80.
  • Fig. 3 illustrates the operation of the control piston 54 for adjusting the
  • the adjusting device 24 comprises a pin 64 which penetrates the rotatably fixed to the crankcase shaft 62 and is connected to a substantially U-shaped actuating member 66.
  • the shaft 62 penetrating through a corresponding bore 64 and the substantially U-shaped actuating element 66 are integrally formed with each other and by means of an actuator, not shown, magnetically translatable in the direction of movement of the push rod 32 movable. If the actuator 66 via the pin 64 in
  • Control piston 54 against a spring force of a hand on the control piston 54 and on the other hand on the push rod 32 supported spring element 68 in the
  • Control chambers 34 and / or 36 can flow in or out.
  • a reverse actuation of the control piston 54 takes place, for example, in that the actuating element 66 and the pin 64 are switched powerless, whereby the Spring element 68 can push the control piston 54 in the direction of the actuating element 66, whereupon the actuating element 66 and the pin 64 move away from the push rod 32.
  • the control edges 48, 50 and 52, the channels 40, 42 and 44 free and the push rod 32 moves in the same direction in the other direction.
  • Compression ratio of the reciprocating engine only a specification of a desired position of the control piston 54 must be done via a specification of a desired position of the actuating element 66 and the pin 64 and the adjusting device 24 then adjusts automatically until the flow of the lubricating oil is interrupted. An additional operation of the control piston 54 to terminate the adjustment of the actuator 24 is not required. Furthermore, this means that any leaks due to wear, as it can occur over a very long lifetime, is quasi self-compensated by the adjusting device 24. It is merely an adaptation of the specification of the desired position of the control piston 54 and the actuating element 66 and the pin 64 needed. If appropriate, this adaptation can take place via a simple comparison of predetermined desired values with actual values detected by means of detection devices. This ensures a very precise adjustment of the compression ratio over a very long service life of the reciprocating engine and thus the representation of a very efficient and fuel-efficient operation derselbigen.
  • the actuating element 66 and the control piston 54 are not firmly connected to each other but act via a
  • arcuate surface 70 of the actuating element 66 together.
  • the center of the arcuate surface is at least substantially on the pivot axis of the adjusting device 24, which coincides with the central axis of symmetry of the shaft 62.
  • the arcuate surface 70 ensures a constant stroke and thus a constant movement of the control piston 54 even during a movement or at a
  • Control piston 54 carries out this pivoting movement while the actuator 66 as described rotatably.
  • the control piston 54 has a rounded head which abuts the arcuate surface 70 and can slide along it with little friction.
  • the cylinder 28 has a slot in which the actuating element 66 is arranged.
  • the cylinder 28 comprises three parts 74, 76 and 78, the part 74 being connected to the part 76.
  • the part 78 is also connected to the part 76 and is partially received in the part 76 and limited on the one hand the working space 26th
  • Fig. 6 shows the adjusting device 24 in five different from each other
  • Adjustment device 24 ⁇ 14 amounts. It can be seen that now a particularly large amount of lubricating oil is received in the control chamber 34, while the control chamber 36 contains almost no more lubricating oil.
  • the other reference numerals have been omitted in FIG. 6, the analogous to the adjusting device 24 according to the preceding figures being analogous to the adjusting device 24 according to FIG.

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

Abstract

L'invention concerne un procédé pour faire fonctionner une machine à piston alternatif, au moins un élément de levier (16) monté sur un maneton (14) d'un vilebrequin (12) et raccordé à une bielle (18) correspondante étant ajusté au moyen d'un dispositif de réglage (24) correspondant pour l'ajustement du rapport de compression de la machine à piston alternatif entre au moins deux positions rotatives par rapport au maneton (14), l'élément de levier (16) étant ajusté par un mouvement du dispositif de réglage (24) au moins sensiblement en translation entre lesdites deux positions rotatives. L'invention concerne aussi un procédé pour faire fonctionner une machine à piston alternatif, au moins un élément de levier (16) monté sur un maneton (14) d'un vilebrequin (12) et raccordé à une bielle (18) correspondante étant ajusté au moyen d'un dispositif de réglage (24) correspondant pour l'ajustement du rapport de compression de la machine à piston alternatif entre au moins deux positions rotatives par rapport au maneton (14), notamment selon l'une quelconque des revendications précédentes, une pluralité d'éléments de levier (16) montés sur un maneton (14) respectif et raccordés à une bielle (18) correspondante étant ajustés au moyen d'un dispositif de réglage (24) associé respectif indépendamment les uns des autres pour l'ajustement du rapport de compression de la machine à piston alternatif entre au moins deux positions rotatives par rapport au maneton (14) respectif.
PCT/EP2010/007363 2010-03-02 2010-12-03 Procédé pour faire fonctionner une machine à piston alternatif Ceased WO2011107130A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102010009911.2 2010-03-02
DE201010009911 DE102010009911B3 (de) 2010-03-02 2010-03-02 Verfahren zum Betreiben einer Hubkolbenmaschine

Publications (1)

Publication Number Publication Date
WO2011107130A1 true WO2011107130A1 (fr) 2011-09-09

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Application Number Title Priority Date Filing Date
PCT/EP2010/007363 Ceased WO2011107130A1 (fr) 2010-03-02 2010-12-03 Procédé pour faire fonctionner une machine à piston alternatif

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DE (1) DE102010009911B3 (fr)
WO (1) WO2011107130A1 (fr)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011017203A1 (de) 2011-04-15 2012-10-18 Daimler Ag Verfahren zum Betreiben einer Verbrennungskraftmaschine mit einer Stelleinrichtung zum variablen Einstellen eines Verdichtungsverhältnisses der Verbrennungsmaschine
DE102011104930A1 (de) * 2011-06-21 2012-12-27 Daimler Ag Verfahren zum Betreiben einer Stelleinrichtung zum variablen Einstellen eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine
DE102020104152A1 (de) 2020-02-18 2021-08-19 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Betreiben einer Brennkraftmaschinenanordnung eines Fahrzeugs

Citations (5)

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Publication number Priority date Publication date Assignee Title
WO2002012694A1 (fr) 2000-08-08 2002-02-14 Daimlerchrysler Ag Moteur a combustion interne a piston alternatif, a taux de compression variable
DE69804297T2 (de) 1997-05-09 2002-10-02 Vianney Rabhi Vorrichtung zum verstellen des hubvolumens und/oder des effektiven verdichtungsverhältnisses einer brennkraftmaschine während des betriebs
US20070150164A1 (en) 2004-05-21 2007-06-28 Walt Froloff Variable compression ratio internal combustion engine
WO2007092168A2 (fr) 2006-02-02 2007-08-16 Edward Charles Mendler Capteur de pression de combustion
DE60129392T2 (de) 2000-10-12 2007-10-31 Nissan Motor Co., Ltd., Yokohama Mechanismus für das variable Verdichtungsverhältnis einer Brennkraftmaschine

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE575230C (de) * 1930-07-05 1933-04-26 Otto Severin Ruud Brennkraftmaschine mit durch Verlegung des Kolbenhubes sich selbsttaetig der Belastung anpassendem veraenderlichen Verdichtungsraum
DE102006003737B3 (de) * 2006-01-24 2007-06-06 Iav Gmbh Ingenieurgesellschaft Auto Und Verkehr Hubkolben-Verbrennungsmotor

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE69804297T2 (de) 1997-05-09 2002-10-02 Vianney Rabhi Vorrichtung zum verstellen des hubvolumens und/oder des effektiven verdichtungsverhältnisses einer brennkraftmaschine während des betriebs
WO2002012694A1 (fr) 2000-08-08 2002-02-14 Daimlerchrysler Ag Moteur a combustion interne a piston alternatif, a taux de compression variable
DE60129392T2 (de) 2000-10-12 2007-10-31 Nissan Motor Co., Ltd., Yokohama Mechanismus für das variable Verdichtungsverhältnis einer Brennkraftmaschine
US20070150164A1 (en) 2004-05-21 2007-06-28 Walt Froloff Variable compression ratio internal combustion engine
WO2007092168A2 (fr) 2006-02-02 2007-08-16 Edward Charles Mendler Capteur de pression de combustion

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