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WO2009053217A1 - Moteur à combustion interne - Google Patents

Moteur à combustion interne Download PDF

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Publication number
WO2009053217A1
WO2009053217A1 PCT/EP2008/062949 EP2008062949W WO2009053217A1 WO 2009053217 A1 WO2009053217 A1 WO 2009053217A1 EP 2008062949 W EP2008062949 W EP 2008062949W WO 2009053217 A1 WO2009053217 A1 WO 2009053217A1
Authority
WO
WIPO (PCT)
Prior art keywords
valves
internal combustion
combustion engine
inlet
engine according
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/EP2008/062949
Other languages
German (de)
English (en)
Inventor
Ralph Engelberg
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.)
Robert Bosch GmbH
Original Assignee
Robert Bosch 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 Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of WO2009053217A1 publication Critical patent/WO2009053217A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/26—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of two or more valves operated simultaneously by same transmitting-gear; peculiar to machines or engines with more than two lift-valves per cylinder
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/14—Tappets; Push rods
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/12—Transmitting gear between valve drive and valve
    • F01L1/18—Rocking arms or levers
    • F01L1/185—Overhead end-pivot rocking arms
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/30—Valve-gear or valve arrangements, e.g. lift-valve gear characterised by the provision of positively opened and closed valves, i.e. desmodromic valves
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L1/00—Valve-gear or valve arrangements, e.g. lift-valve gear
    • F01L1/46—Component parts, details, or accessories, not provided for in preceding subgroups
    • F01L1/462—Valve return spring arrangements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/10—Valve-gear or valve arrangements actuated non-mechanically by fluid means, e.g. hydraulic
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01L—CYCLICALLY OPERATING VALVES FOR MACHINES OR ENGINES
    • F01L9/00—Valve-gear or valve arrangements actuated non-mechanically
    • F01L9/20—Valve-gear or valve arrangements actuated non-mechanically by electric means
    • F01L9/22—Valve-gear or valve arrangements actuated non-mechanically by electric means actuated by rotary motors

Definitions

  • the invention relates to an internal combustion engine according to the preamble of the main claim.
  • the internal combustion engine according to the invention with the characterizing features of the main claim has the advantage that a conventional valve clearance compensation can be used in a simple manner by the coupling element is a rotatably mounted valve lever or mounted in a linear guide Traverse and so with the inlet and exhaust valves coupled, that only compressive forces on the inlet and outlet valves are transferable.
  • valve lever acts on the pair of inlet and outlet valves via a valve play compensation element, since this compensates for manufacturing tolerances be omitted, the setting of the valve clearance can be omitted and thermal expansion and wear during operation can be compensated.
  • valve play compensation element is a rocker arm which is supported at its one end on the intake or exhaust valves and at its other end on a hydraulic tappet, since in this way a conventional clearance compensation from camshaft-controlled engines is achieved.
  • the lash adjuster is a bucket tappet having a hydraulic lash adjuster, since in this way an alternative conventional lash adjuster is achieved from camshaft-controlled engines.
  • a helical torsion spring is provided which is mounted on an axis of rotation of the valve lever and is supported with a portion on the control piston and with two sections on the inlet and outlet valves. In this way, can be dispensed with a support of the spring on the housing and the spring-mass vibration system is easier to control.
  • connection between the actuating piston and the Emiass constitut valves is designed such that of the actuator only compressive forces on the Emiass constitut valves are transmitted because the mechanical connection between the actuator and the gas exchange valve in this way is particularly resilient.
  • FIG. 1 shows a valve control device according to the invention of an internal combustion engine according to a first embodiment
  • FIG. 2 shows a valve control device according to the invention according to a second exemplary embodiment
  • FIG. 3 shows a valve control device according to the invention according to a third exemplary embodiment
  • FIG. 4 shows a valve control device according to the invention according to a fourth exemplary embodiment
  • FIG. 5 shows a valve control device according to the invention according to a fifth exemplary embodiment.
  • FIG. 1 shows a simplified illustrated, inventive valve control device of an internal combustion engine according to a first embodiment.
  • the internal combustion engine has at least one cylinder 1, to which one, two or more inlet valves 2 and one, two or more exhaust valves 3 are assigned for controlling the gas exchange in the cylinder.
  • At least one actuator 4 is provided which is designed as an electric or hydraulic actuator and controls a pair or triples of intake valves 2 or a pair or triple of exhaust valves 3.
  • the cylinder may, for example, have two intake valves 2 and one exhaust valve 3 or vice versa, or two intake valves 2 and two exhaust valves 3 each.
  • the actuator 4 has a linearly adjustable actuating piston 5 which acts on the intake valves 2 or the exhaust valves 3 via a mechanical coupling element 8.
  • the coupling element 8 is a rotatably mounted valve lever and that the actuator 4 is arranged such that the direction of movement 9 of its actuating piston 5 of the adjustment direction 10 of the intake valves 2 and exhaust valves 3 deviates.
  • the direction of movement 9 of the actuating piston 10 and the adjustment direction 10 of the gas exchange valves 2,3 are angled to each other.
  • the coupling element 8 is fixedly connected to a wall of the internal combustion engine and designed, for example, U-shaped, wherein the two legs 8.1 each acts on one of the two intake valves 2 or the two exhaust valves 3.
  • the Ventilspie laus insectssvoricide 11 is already known from the prior art and designed for example as a rocker arm, which at one end to the two intake valves 2 and exhaust valves 3 and is supported at its other end to a common hydraulic tappet 12.
  • the valve lash adjuster 11 may be a known tappet for lash adjuster.
  • the valve play compensation element 11 may also be a hydraulic valve clearance compensation element integrated directly in the coupling element 8.
  • a return spring 15 is provided on the inlet valves 2 and the outlet valves 3, respectively, and a counter spring 16 acting counter to the return spring 15 is provided on the adjusting piston 5 of the actuator 4.
  • the return spring 15 is supported at one end to a spring plate 14 of the gas exchange valve 2,3 and at its other end to a housing wall of the internal combustion engine.
  • the opposing spring 16 is supported at one end to a housing of the actuator 4 and at the other end to a shoulder 5.1 of the actuating piston 5.
  • the actuating piston 5 extends, whereby the counter-spring 16 of the actuating piston 5 is increasingly relieved and the return springs 15 of the gas exchange valves 2.3 are increasingly biased. If the actuating piston 5 moves back, the gas exchange valves 2, 3 are closed by the spring force of the return springs 15.
  • the intake valves 2 and the exhaust valves 3 are braked by the opposing spring 16 of the actuator 4, wherein the spring energy of the return springs 15 partially stored in the opposing spring 16 of the actuator 4 and used again for the next opening operation becomes.
  • Gas exchange valve actuator intended a little stroke.
  • the actuator 4 can still go to its defined closed position. At this time, the
  • Lash adjuster 11 the missing stroke, so that is opened again from the defined starting position at the next opening operation.
  • connection between the actuating piston 5 and the inlet and outlet valves 2, 3 is designed in such a way that only compressive forces are transmitted to the inlet and outlet valves 2, 3 by the actuator 4.
  • Between the adjusting piston 5 and the inlet and outlet valves 2,3 may be provided for the translation or reduction of Stellgliedhubs.
  • FIG. 2 shows a valve control device according to the invention according to a second exemplary embodiment.
  • the second embodiment differs from the first embodiment in that the return spring 15 and the counter-spring 16 is replaced by a single biasing spring 17.
  • the biasing spring 17 is designed for example as a helical torsion spring, which is mounted on a rotational axis of the valve lever 8 and is supported with a first spring portion 18 on the actuating piston 5 and two second spring portions 19 on the two intake valves 2 and exhaust valves 3.
  • FIG 3 shows a valve control device according to the invention according to a third embodiment.
  • the third embodiment differs from the second embodiment in that the biasing spring 17 is replaced by a rigid coupling lever 22 which is rotatably mounted on the axis of rotation of the valve lever 8 and at its the actuating piston 5 facing end is coupled to the actuating piston 5, that he is taken in closing the gas exchange valve 2.3 of the shoulder 5.1 of the actuating piston 5 in the direction of movement of the actuating piston 5 and thereby acts with the gas exchange valve 2.3 end facing the gas exchange valve 2,3.
  • the end facing the gas exchange valves 2, 3 cooperates with the gas exchange valves 2, 3. It has two passage openings 23, which are penetrated by the intake valves 2 and exhaust valves 3.
  • a respective spring element 24, for example a plate spring is provided, which fulfills the function of the pretensioning spring 17 according to FIG.
  • FIG. 4 shows a valve control device according to the invention according to a fourth embodiment.
  • the invention provides that the coupling element 8 is mounted in a linear guide 7 Traverse.
  • the traverse is designed, for example, T-shaped, wherein a longitudinal section 8.1 is guided in the linear guide 7 and a cross section 8.2 acts on the pair or triple of gas exchange valves 2.3.
  • the linear guide 7 is fixedly provided on the housing of the internal combustion engine. Between the transverse section 8.2 and the gas exchange valves 2, 3, for example, a valve clearance compensation element 11 is provided.
  • the traverse is not firmly connected to the gas exchange valves 2.3, so that in this example between the actuating piston 5, the coupling element 8, the lash adjuster 11,12 and the gas exchange valve 2,3 only compressive forces are transmitted.
  • the return springs 15 are as shown in Fig.l each supported at one end on the spring plate 14 of the gas exchange valve 2,3 and with its other end to a housing wall of the engine and at least partially force compensated with a counter-spring 16.
  • the actuator 4 is arranged according to this fourth embodiment such that the direction of movement 9 of the actuating piston 5 in the adjustment direction 10 of the intake valves 2 and the exhaust valves 3 runs.
  • FIG. 5 shows a valve control device according to the invention according to a fifth embodiment.
  • the fifth embodiment differs from the third embodiment according to FIG. 3 in that the spring elements 24 are supported with their end facing away from the spring plate 14 against a coupling lever 22, which is coupled to the coupling element 8 and formed as a crosspiece 25.
  • the further traverse 25 is supported on a shoulder 26 of the longitudinal section 8.1 of the coupling element 8 and mounted movably in the direction of the linear guide 7.
  • valve clearance compensation element 11 is integrated in the coupling element 8.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)

Abstract

On connaît déjà des moteurs à combustion interne comprenant au moins un cylindre présentant une ou deux soupapes d'admission et une ou deux soupapes d'échappement pour la commande de l'échange gazeux, et au moins un actionneur présentant un piston de réglage au moyen duquel une paire de soupapes d'admission ou une paire de soupapes d'échappement peut être actionnée, via un élément d'accouplement. L'élément d'accouplement est une plaque montée tournante sur le piston de réglage, sur laquelle les soupapes d'échange gazeux sont fixées de manière solidaire. Grâce à cette liaison solidaire, les soupapes d'échange gazeux sont ouvertes de manière active sous l'effet des forces de pression de l'actionneur, et sont fermées de manière active sous l'effet des forces de traction de l'actionneur. Ce système présente toutefois l'inconvénient selon lequel il n'est pas possible d'obtenir une compensation de jeu et de tolérance précise, permettant d'assurer un mouvement uniforme desdites soupapes d'échange gazeux. Le positionnement tournant de l'élément d'accouplement permet une course légèrement différente des deux soupapes d'échange gazeux, de sorte que celles-ci ne peuvent être actionnées avec précision, et une compensation du jeu des soupapes est impossible, ou ne peut se faire que d'une manière très coûteuse. Dans le moteur à combustion interne selon l'invention, la compensation de jeu des soupapes existant jusqu'à présent peut se faire de manière simple. A cet effet, l'invention est caractérisée en ce que l'élément d'accouplement (8) est un culbuteur monté tournant, ou une traverse montée dans un guide linéaire (7), et est accouplé avec les soupapes d'admission ou d'échappement (2, 3) de telle façon qu'uniquement des forces de pression soient transférables aux soupapes d'admission ou d'échappement (2, 3).
PCT/EP2008/062949 2007-10-24 2008-09-26 Moteur à combustion interne Ceased WO2009053217A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007050818.4 2007-10-24
DE102007050818A DE102007050818A1 (de) 2007-10-24 2007-10-24 Brennkraftmaschine

Publications (1)

Publication Number Publication Date
WO2009053217A1 true WO2009053217A1 (fr) 2009-04-30

Family

ID=40344610

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2008/062949 Ceased WO2009053217A1 (fr) 2007-10-24 2008-09-26 Moteur à combustion interne

Country Status (2)

Country Link
DE (1) DE102007050818A1 (fr)
WO (1) WO2009053217A1 (fr)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2980515B1 (fr) * 2011-09-26 2016-03-11 Vianney Rabhi Actionneur de soupape electro-hydraulique a came alternative
FR2989416B1 (fr) * 2012-04-16 2016-01-08 Valeo Sys Controle Moteur Sas Dispositif d'actionnement d'une soupape electronique
CN104204429A (zh) * 2012-05-16 2014-12-10 维亚内·拉比 具有往复凸轮的电液阀致动器
DE102016112449B4 (de) * 2016-07-07 2018-03-22 Man Diesel & Turbo Se Ventiltrieb für eine Brennkraftmaschine und Brennkraftmaschine
FR3071869B1 (fr) * 2017-10-02 2019-10-11 Vianney Rabhi Actionneur hydraulique de soupape a regeneration
DE102023108725A1 (de) 2023-04-05 2024-10-10 Schaeffler Technologies AG & Co. KG Elektrohydraulische Ventilsteuerung eines Verbrennungsmotors

Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385959A (en) * 1941-06-13 1945-10-02 Frank B Yingling Valve operating mechanism
CH281243A (fr) * 1945-12-21 1952-02-29 Whitworth & Co Mécanisme de commande d'un écoulement de fluide.
GB725743A (en) * 1952-05-20 1955-03-09 Daimler Benz Ag Improvements relating to valve-control gears for internal combustion engines
JPS59229012A (ja) * 1983-06-08 1984-12-22 Yanmar Diesel Engine Co Ltd 内燃機関の動弁機構
US4655178A (en) * 1985-05-08 1987-04-07 Meneely Vincent A Anti-lash adjuster
EP0294682A1 (fr) * 1987-06-11 1988-12-14 The Jacobs Manufacturing Company Découpleur de culbuteur
EP0336259A1 (fr) * 1988-03-28 1989-10-11 Nissan Motor Co., Ltd. Dispositif d'actionnement des soupapes champignons d'un moteur à combustion interne ou d'un type analogue
EP0568932A1 (fr) * 1992-05-07 1993-11-10 Audi Ag Dispositif de commande desmodromique des soupapes de moteur à combustion interne
DE19511880A1 (de) * 1994-04-08 1995-10-12 Audi Ag Vorrichtung zum Betätigen von Gaswechsel-Ventilen
JPH11101109A (ja) * 1997-09-30 1999-04-13 Nissan Motor Co Ltd 内燃機関のバルブタイミング制御機構
US20030164163A1 (en) * 2002-03-01 2003-09-04 Ning Lei Method and apparatus for flexibly regulating internal combustion engine valve flow
US20040094103A1 (en) * 2002-04-30 2004-05-20 Hauser Bret R. Radial valve gear apparatus for barrel engine
US20040237921A1 (en) * 1998-09-09 2004-12-02 De Ojeda William Unit trigger actuator
US20050016477A1 (en) * 2003-07-25 2005-01-27 Scott Robert Taylor Linear cam valve system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10147305A1 (de) 2001-09-26 2003-04-17 Bosch Gmbh Robert Brennkraftmaschine

Patent Citations (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2385959A (en) * 1941-06-13 1945-10-02 Frank B Yingling Valve operating mechanism
CH281243A (fr) * 1945-12-21 1952-02-29 Whitworth & Co Mécanisme de commande d'un écoulement de fluide.
GB725743A (en) * 1952-05-20 1955-03-09 Daimler Benz Ag Improvements relating to valve-control gears for internal combustion engines
JPS59229012A (ja) * 1983-06-08 1984-12-22 Yanmar Diesel Engine Co Ltd 内燃機関の動弁機構
US4655178A (en) * 1985-05-08 1987-04-07 Meneely Vincent A Anti-lash adjuster
EP0294682A1 (fr) * 1987-06-11 1988-12-14 The Jacobs Manufacturing Company Découpleur de culbuteur
EP0336259A1 (fr) * 1988-03-28 1989-10-11 Nissan Motor Co., Ltd. Dispositif d'actionnement des soupapes champignons d'un moteur à combustion interne ou d'un type analogue
EP0568932A1 (fr) * 1992-05-07 1993-11-10 Audi Ag Dispositif de commande desmodromique des soupapes de moteur à combustion interne
DE19511880A1 (de) * 1994-04-08 1995-10-12 Audi Ag Vorrichtung zum Betätigen von Gaswechsel-Ventilen
JPH11101109A (ja) * 1997-09-30 1999-04-13 Nissan Motor Co Ltd 内燃機関のバルブタイミング制御機構
US20040237921A1 (en) * 1998-09-09 2004-12-02 De Ojeda William Unit trigger actuator
US20030164163A1 (en) * 2002-03-01 2003-09-04 Ning Lei Method and apparatus for flexibly regulating internal combustion engine valve flow
US20040094103A1 (en) * 2002-04-30 2004-05-20 Hauser Bret R. Radial valve gear apparatus for barrel engine
US20050016477A1 (en) * 2003-07-25 2005-01-27 Scott Robert Taylor Linear cam valve system

Also Published As

Publication number Publication date
DE102007050818A1 (de) 2009-04-30

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