WO2012139616A1 - Dispositif de réglage permettant de régler de façon variable un taux de compression d'un moteur à combustion interne - Google Patents

Dispositif de réglage permettant de régler de façon variable un taux de compression d'un moteur à combustion interne Download PDF

Info

Publication number
WO2012139616A1
WO2012139616A1 PCT/EP2011/006166 EP2011006166W WO2012139616A1 WO 2012139616 A1 WO2012139616 A1 WO 2012139616A1 EP 2011006166 W EP2011006166 W EP 2011006166W WO 2012139616 A1 WO2012139616 A1 WO 2012139616A1
Authority
WO
WIPO (PCT)
Prior art keywords
game
adjusting
transmission
setting device
internal combustion
Prior art date
Application number
PCT/EP2011/006166
Other languages
German (de)
English (en)
Inventor
Klaus Fieweger
Hansjörg FINKBEINER
Gernot Kurtzer
Markus Lengfeld
Dietmar Schröer
Georg Seidel
Alexander Von Gaisberg-Helfenberg
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 WO2012139616A1 publication Critical patent/WO2012139616A1/fr

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

Definitions

  • the invention relates to an adjusting device for variably setting at least one compression ratio of an internal combustion engine specified in the preamble of claim 1.
  • Compression ratios for a reciprocating internal combustion engine which includes a piston which can be moved over a stroke in the engine and a piston pin, and a crankshaft.
  • the crankshaft converts the stroke of the piston into a rotary motion.
  • the crankshaft includes a crankpin, the variable compression ratio generating mechanism including a plurality of links mechanically connecting the piston pin to the crankpin.
  • the mechanism includes a control shaft to which an eccentric cam is attached so that a center of the eccentric cam is eccentric to a center of the control shaft. Further, the mechanism includes a control link connected at one end to one of the plurality of links and connected at the other end to the eccentric cam.
  • the mechanism includes an actuator that drives the control shaft within a predetermined controlled angular range and holds the control shaft at a desired angular position so that a compression ratio of the engine continuously decreases when the control shaft is driven in a first rotational direction.
  • the compression ratio increases continuously when the control shaft is driven in a second direction of rotation opposite to the first direction of rotation.
  • the actuator comprises a reciprocating block slider connected to the control shaft at a first end portion.
  • the actuator further comprises a rotary member that over a intermeshing pair of
  • Sliding motion of the sliding member is converted to drive the control shaft in the first or in the second rotational direction.
  • the actuator includes a hydraulic chamber facing an axial end surface of the second end portion of the slider, so that working fluid pressure in the hydraulic chamber slides in the same axial direction as the slider
  • Direction of action of a reciprocating load presses which acts on the sliding member during the downward stroke of the piston.
  • the reciprocating load acts on the slider during axial upward and downward strokes of the piston in axial directions of the slider.
  • Internal combustion engines known adjusting means for variably setting at least one compression ratio of an internal combustion engine is thus at least one transmission means for transmitting forces and / or
  • Torques provided over which the compression ratio is variably adjustable It has been shown that undesired noise generation can occur during operation of the adjusting device.
  • Compression ratio of an internal combustion engine in particular a reciprocating internal combustion engine, comprises at least one
  • Transmission device for transmitting forces and / or torques over which the compression ratio is variably adjustable.
  • at least one clearance adjustment device is provided by means of which a clearance of the transmission device can be adjusted.
  • the game is, for example, a production and / or application-related freedom of movement between at least two transmission elements of the transmission device.
  • the transmission elements serve to transmit the forces and / or torques for setting the compression ratio.
  • the adjusting device which is designed, for example, as a so-called multi-link power plant, acting, swelling and / or alternating forces and / or torques can occur on the adjusting device, which act in particular on the transmission device ,
  • the transmission device comprises, for example, at least one transmission for transmitting forces and / or moments for setting a
  • the transmission has at least two toothed Elements as the transmission elements, which are coupled via respective intermeshing teeth.
  • Torques prove to be difficult for a design and a configuration of the transmission, since it can cause system changes of the toothing, especially if there is an undesirable play between the tooth flanks. If no appropriate countermeasures are taken, this can be undesirable
  • Transmission device in particular of the transmission, are avoided. This is accompanied by a longer life of the transmission device and thus the entire actuator. It thus has improved functional performance over its entire service life and can also set the compression ratio efficiently over a long service life with high dynamic range settings. Thus, the internal combustion engine over the long service life can be efficiently adapted to different driving conditions and operating points and operated efficiently. This results in a particularly low fuel consumption and low C0 2 - emissions of the internal combustion engine.
  • the Petruinstell keeps the cost of the actuator low. Due to the adjustability of the play of the transmission device can be dispensed with the presentation of costly gear qualities of the gears of the transmission and / or cost-intensive transmission element of the transmission device.
  • the axial distance of the toothed elements of the transmission by means of the clearance adjustment is adjustable to adjust the game.
  • an eccentric is provided, by means of which at least one of the toothed elements can be moved relative to the other, thus the Center distance and thus the game needs and time and cost
  • the Pandainstell pointed the adjusting device allows in particular a time- and cost-effective adjustment of the game even after a certain life and after a certain period of operation, this lifetime of the actuator away.
  • the toothed elements of the transmission in particular gears, for example, as at least substantially conical gears, in particular as bevel gears formed.
  • Axial distance can be adjusted by at least substantially axially moving one of the gears relative to the other time and cost.
  • other principles for adjusting the center distance and thus the game can be provided.
  • an acting during operation of the actuator actuator by means of which the game automatically adjusted at least substantially continuously and post-adjusted.
  • the game can be adjusted not only during the initial assembly and maintenance or repair work but during the operation of the actuator over its lifetime and compensated accordingly.
  • Reciprocating internal combustion engines acts.
  • an automatic compensation of the game of the transmission device is created, so that the game can be adjusted at least substantially continuously without the intervention of a person.
  • Another advantage of the adjustability of the game by the particular force-defined springing and / or by the described, automatic post-setting, for example by the hydraulic element, is that in particular temperature-induced changes of the game can be compensated in a simple manner.
  • temperature-related changes of the game are for example
  • Adjusting device can be compensated in a simple and cost-effective manner, accompanied by the described advantages.

Abstract

La présente invention concerne un dispositif de réglage permettant de régler de façon variable au moins un taux de compression d'un moteur à combustion interne, notamment d'un moteur alternatif à combustion interne, et comprenant au moins un dispositif de transmission qui permet de régler le taux de compression de façon variable. Au moins un dispositif de réglage de jeu est prévu et permet de régler un jeu du dispositif de transmission.
PCT/EP2011/006166 2011-04-15 2011-12-08 Dispositif de réglage permettant de régler de façon variable un taux de compression d'un moteur à combustion interne WO2012139616A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE201110017199 DE102011017199A1 (de) 2011-04-15 2011-04-15 Stelleinrichtung zum variablen einstellen eines Verdichtungsverhältnisses einer Verbrennungskraftmaschine
DE102011017199.1 2011-04-15

Publications (1)

Publication Number Publication Date
WO2012139616A1 true WO2012139616A1 (fr) 2012-10-18

Family

ID=45319059

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2011/006166 WO2012139616A1 (fr) 2011-04-15 2011-12-08 Dispositif de réglage permettant de régler de façon variable un taux de compression d'un moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102011017199A1 (fr)
WO (1) WO2012139616A1 (fr)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298894A (fr) * 1961-04-28 1962-07-13 Piston auto-variateur de rapport volumétrique, et son dispositif élastique amortisseur
JPH1151156A (ja) * 1997-08-06 1999-02-23 Matsushita Electric Ind Co Ltd 歯車及び歯車装置及び歯車装置のバックラッシ調整方法
WO2000055483A1 (fr) * 1999-03-18 2000-09-21 Saab Automobile Ab Dispositif de prevention de bruit lie aux paliers dans des moteurs a combustion interne
EP1199452A1 (fr) * 2000-10-16 2002-04-24 FEV Motorentechnik GmbH Moteur à combustion interne, à rapport volumétrique variable, avec dispositif de réglage intégré
EP1201894A2 (fr) * 2000-10-31 2002-05-02 Nissan Motor Company, Limited Mécanisme pour la variation des taux de compression d' un moteur à combustion interne
US6443107B1 (en) * 1999-05-27 2002-09-03 Edward Charles Mendler Rigid crankshaft cradle and actuator
DE10306935A1 (de) * 2003-02-19 2004-09-02 Zf Friedrichshafen Ag Zahnradgetriebe
JP2006200509A (ja) * 2005-01-24 2006-08-03 Toyota Motor Corp 可変圧縮比内燃機関
JP2007056836A (ja) * 2005-08-26 2007-03-08 Toyota Motor Corp 可変圧縮比内燃機関、ギア構造及び、可変圧縮比内燃機関におけるギア組付方法
WO2007085739A2 (fr) * 2006-01-26 2007-08-02 Vianney Rabhi Dispositif presseur pour moteur a rapport volumetrique variable
DE102008040459A1 (de) * 2008-07-16 2010-01-21 Zf Friedrichshafen Ag Verstellvorrichtung eines Verbrennungsmotors
DE102009046857A1 (de) * 2009-11-19 2011-05-26 Zf Friedrichshafen Ag Stellgetriebe und Verwendung des Stellgetriebes

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1298894A (fr) * 1961-04-28 1962-07-13 Piston auto-variateur de rapport volumétrique, et son dispositif élastique amortisseur
JPH1151156A (ja) * 1997-08-06 1999-02-23 Matsushita Electric Ind Co Ltd 歯車及び歯車装置及び歯車装置のバックラッシ調整方法
WO2000055483A1 (fr) * 1999-03-18 2000-09-21 Saab Automobile Ab Dispositif de prevention de bruit lie aux paliers dans des moteurs a combustion interne
US6443107B1 (en) * 1999-05-27 2002-09-03 Edward Charles Mendler Rigid crankshaft cradle and actuator
EP1199452A1 (fr) * 2000-10-16 2002-04-24 FEV Motorentechnik GmbH Moteur à combustion interne, à rapport volumétrique variable, avec dispositif de réglage intégré
DE60127919T2 (de) 2000-10-31 2007-08-30 Nissan Motor Co., Ltd., Yokohama Mechanismus für das variable Verdichtungsverhältnis einer Brennkraftmaschine
EP1201894A2 (fr) * 2000-10-31 2002-05-02 Nissan Motor Company, Limited Mécanisme pour la variation des taux de compression d' un moteur à combustion interne
DE10306935A1 (de) * 2003-02-19 2004-09-02 Zf Friedrichshafen Ag Zahnradgetriebe
JP2006200509A (ja) * 2005-01-24 2006-08-03 Toyota Motor Corp 可変圧縮比内燃機関
JP2007056836A (ja) * 2005-08-26 2007-03-08 Toyota Motor Corp 可変圧縮比内燃機関、ギア構造及び、可変圧縮比内燃機関におけるギア組付方法
WO2007085739A2 (fr) * 2006-01-26 2007-08-02 Vianney Rabhi Dispositif presseur pour moteur a rapport volumetrique variable
DE102008040459A1 (de) * 2008-07-16 2010-01-21 Zf Friedrichshafen Ag Verstellvorrichtung eines Verbrennungsmotors
DE102009046857A1 (de) * 2009-11-19 2011-05-26 Zf Friedrichshafen Ag Stellgetriebe und Verwendung des Stellgetriebes

Also Published As

Publication number Publication date
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