EP2262980A1 - Dispositif de compensation de jeu de soupape et procede pour commander un tel dispositif, destines a un moteur a combustion interne - Google Patents

Dispositif de compensation de jeu de soupape et procede pour commander un tel dispositif, destines a un moteur a combustion interne

Info

Publication number
EP2262980A1
EP2262980A1 EP09730360A EP09730360A EP2262980A1 EP 2262980 A1 EP2262980 A1 EP 2262980A1 EP 09730360 A EP09730360 A EP 09730360A EP 09730360 A EP09730360 A EP 09730360A EP 2262980 A1 EP2262980 A1 EP 2262980A1
Authority
EP
European Patent Office
Prior art keywords
valve
blocking
force
combustion engine
internal combustion
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.)
Withdrawn
Application number
EP09730360A
Other languages
German (de)
English (en)
Inventor
Josef Astner
Daniel BÖHME
Marc Oliver Wagner
Harry Wolf
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 EP2262980A1 publication Critical patent/EP2262980A1/fr
Withdrawn legal-status Critical Current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
    • F01L1/20—Adjusting or compensating clearance
    • F01L1/22—Adjusting or compensating clearance automatically, e.g. mechanically
    • F01L1/24—Adjusting or compensating clearance automatically, e.g. mechanically by fluid means, e.g. hydraulically
    • 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
    • F01L13/00—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations
    • F01L13/06—Modifications of valve-gear to facilitate reversing, braking, starting, changing compression ratio, or other specific operations for braking
    • F01L13/065—Compression release engine retarders of the "Jacobs Manufacturing" type

Definitions

  • the invention relates to a valve clearance compensation device specified in the preamble of claim 1 and a method for controlling such a valve clearance compensation device.
  • valve play compensation device is already known from DE 10 2006 031 706 A1, for example, and comprises an inner part which is arranged at least over a length range within a guide channel of an outer part and is movable along a guide channel for clearance compensation of an associated valve of the internal combustion engine.
  • the valve clearance compensation device further comprises a pressure chamber and a hydraulically connected to this reservoir for receiving hydraulic fluid, wherein the pressure and the reservoir are assigned to the inner part.
  • a one-way valve is also arranged to make a direction determination of the flow of hydraulic fluid between the two rooms can.
  • valve play compensation device comprises a clearance compensation element, by means of which the inner part is acted upon with respect to the outer part with a force, and a feed device which is hydraulically connected to a blocking space and by means of which Blocking space hydraulic medium for exerting a force opposing the blocking force can be fed to the inner part.
  • Object of the present invention is to provide a valve clearance compensation device and a method for controlling such a valve clearance compensation device, which allow a reliable and flexible inhibiting the adjustment function of the inner part.
  • valve clearance compensation device having the features of patent claim 1 and by a method for controlling such a valve clearance compensation device according to claim 7.
  • Valve lash adjuster are to be regarded as advantageous embodiments of the method and vice versa.
  • a valve lash adjuster which allows a reliable and flexible inhibiting the Nachstellfunktion the inner part, according to the invention is provided in that the feed device comprises a clock, wherein the blocking force is variable in response to a duty cycle of the clock.
  • Valve lash adjuster a clocked supply of the hydraulic medium in the blocking chamber and thus allows a reliable and flexible pressure build-up for exerting the force opposite to the blocking force on the inner part. This ensures that at certain operating conditions of the internal combustion engine - for example, in engine braking - that of the valve clearance compensation device associated valve can be opened by an exhaust back pressure without the valve clearance compensation device compensates for the resulting game by moving the inner part. In this way it is reliably prevented that the valve remains permanently open, whereby an orderly gas exchange of the internal combustion engine would be significantly impaired. With the help of the clock of the feeder, it is in summary possible to control the amount of the blocking medium supplied to the hydraulic medium intermittently and depending on the situation and to prevent unwanted adjustment of the inner part reliably.
  • the working cycle of the clock generator is adapted to a working cycle of a cylinder of the internal combustion engine assigned to the valve.
  • the feed device comprises a pressure chamber for receiving the hydraulic means, wherein the pressure chamber of the feed device has an adjustable volume for changing the blocking force.
  • a pressure chamber makes it possible to provide the amount of hydraulic medium required to produce different levels of blocking forces.
  • the hydraulic pressure required in the blocking chamber for displaying the respectively desired blocking force can be set particularly easily.
  • the clock comprises a camshaft, by means of which the pressure chamber of the supply device can be acted upon and Volume is variable depending on a cam contour of the camshaft.
  • This is a structurally simple and reliable way to change the volume of the pressure chamber and thus the resulting blocking force depending on the desired drive times of the blocking chamber clocked.
  • an already existing camshaft of the internal combustion engine for example, an exhaust camshaft, is used as a clock.
  • an existing camshaft is provided with an additional cam or an additional cam contour, or that a camshaft associated with the feed device is used.
  • the supply device being hydraulically coupled to a hydraulically actuatable engine brake system, in particular a decompression brake system.
  • a hydraulically actuatable engine brake system in particular a decompression brake system.
  • the blocking chamber can be connected to an internal fluid channel of the engine brake system, for example a so-called Jake brake.
  • the intermittent pressure build-up of the engine braking system is advantageously suitable for the desired activation times of the blocking space, so that the undesired adjustment of the inner part is reliably prevented in dependence on the lift curve of the associated valve.
  • the outer part comprises a discharge opening, by means of which hydraulic medium from the blocking space is removable.
  • the blocking space is supplied by means of the supply hydraulic medium for exerting a force opposite blocking force on the inner part, wherein the blocking force in response to a power stroke of the clock of the feeder is changed.
  • the working clock of the clock is adapted to the working cycle of the valve associated with the cylinder of the internal combustion engine. This is a particularly simple way to prevent the adjustment of the inner part in operating states of the internal combustion engine, in which the valve is opened by the exhaust back pressure to allow in areas without valve lift readjustment of the inner part and thus a hydraulic clearance compensation, however.
  • the blocking force during a working stroke of the cylinder, in which no stroke of the valve is performed, less than the force and / or during a working stroke of the cylinder in which a stroke of the valve is performed, the same and / or greater than the force is set. In this way it is ensured that the unwanted readjustment of the inner part is reliably prevented and it does not come to a permanently open valve. Further advantages, features and details of the invention will become apparent from the following description of an embodiment and from the drawing.
  • the single FIGURE shows a schematic sectional view of a valve clearance compensation device according to an embodiment.
  • the figure shows a schematic sectional view of a lash adjuster according to an embodiment.
  • the valve lash adjuster here comprises an inner part 10, which is arranged within a guide channel 12 of an outer part 14 and for clearance compensation of an associated valve 16 of an internal combustion engine (not shown) along the guide channel 12 is movable. Furthermore, the valve lash adjuster here comprises an inner part 10, which is arranged within a guide channel 12 of an outer part 14 and for clearance compensation of an associated valve 16 of an internal combustion engine (not shown) along the guide channel 12 is movable. Furthermore, the
  • Valve clearance compensation device a pressure chamber 18 and a reservoir 20 connected thereto, wherein in the hydraulic connection, a one-way valve 22 is arranged for determining the direction of the flow of the hydraulic medium.
  • a clearance compensating element 24 designed as a spring is arranged within the storage space 20, by means of which the inner part 10 is acted upon with respect to the outer part 14 with a positioning force.
  • the inner part 10 which has a spherical end mounted in a receptacle 26, is moved against the receptacle 26, which is in operative connection with the receptacle 26, in accordance with arrow Ia for play compensation.
  • the one-way valve 22 opens so that hydraulic fluid from the pressure chamber 18 can flow into the reservoir 20. Since the valve 16 in certain operating conditions of the internal combustion engine - for example during an engine braking operation - can be opened by the resulting exhaust back pressure, this could lead to an undesired readjustment of the inner part 10, whereby the valve 16 would remain permanently open in the other operating conditions.
  • the valve lash adjuster additionally comprises one Feeding device 28, which is hydraulically connected to a blocking chamber 30 and by means of which the blocking chamber 30 hydraulic medium for exerting a force opposite to the blocking force on the inner part 10 can be fed.
  • the feed device 28 has a pressure chamber 32 for receiving the hydraulic fluid, which is hydraulically connected to the blocking chamber 30 via a fluid line 34.
  • the pressure chamber 32 comprises a movable piston 36, by means of which a volume of the pressure chamber 32 is adjustable.
  • the feed device has a clock generator 38, by means of which the blocking force can be varied as a function of a working cycle of the clock generator 38.
  • the clock generator 38 in turn comprises a camshaft 40, by means of which the piston 36 to change the volume of the pressure chamber 32 and thus to change the size of the blocking force can be acted upon.
  • the camshaft 40 has a cam 42 with a cam contour 44 which runs on the piston 36.
  • an adjustment of the inner part 10 is prevented according to arrow Ia when the blocking force is set equal to or preferably greater than the force.
  • the Blocking space 30 is hydraulically connected to a fluid passage of an engine braking system (not shown) of the internal combustion engine, for example, a so-called Jake brake.
  • the intermittent clocked pressure build-up of the feed device 28, which is hereby embodied as part of the engine braking system, is likewise advantageously adapted to the desired activation times of the blocking chamber 30 in this case.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Valve Device For Special Equipments (AREA)
  • Valve-Gear Or Valve Arrangements (AREA)

Abstract

L'invention concerne un dispositif de compensation de jeu de soupape destiné à un moteur à combustion interne, en particulier un moteur à étincelles ou un moteur diesel. Ce dispositif comprend: une partie intérieure (10) qui est agencée au moins sur une zone longitudinale située à l'intérieur d'un canal de guidage (12) d'une partie extérieure (14) et qui peut se déplacer le long du canal de guidage (12) pour compenser le jeu d'une soupape associée du moteur à combustion interne; une chambre de pression (18) et un compartiment de stockage (20) en communication hydraulique avec ladite chambre (18) pour recevoir un fluide hydraulique, la chambre (18) et le compartiment de stockage (20) étant associés à la partie intérieure (10) et une soupape à voie unique étant disposée entre la chambre de pression (18) et le compartiment de stockage (20); un élément de compensation de jeu au moyen duquel la partie intérieure (10) est soumise à une force de positionnement par rapport à la partie extérieure (14); et un dispositif d'amenée (28) en communication hydraulique avec un compartiment de blocage (30), qui permet d'amener le fluide hydraulique au compartiment de blocage (30) pour qu'il exerce, sur la partie intérieure (10), une force de blocage s'opposant à la force de positionnement, le dispositif d'amenée (28) comprenant un générateur d'impulsions (38) et la force de blocage pouvant être modifiée en fonction de la cadence de travail du générateur d'impulsions (38).
EP09730360A 2008-04-09 2009-03-07 Dispositif de compensation de jeu de soupape et procede pour commander un tel dispositif, destines a un moteur a combustion interne Withdrawn EP2262980A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102008017948A DE102008017948A1 (de) 2008-04-09 2008-04-09 Ventilspielausgleichseinrichtung und Verfahren zum Steuern einer Ventilspielausgleichseinrichtung für eine Brennkraftmaschine
PCT/EP2009/001651 WO2009124623A1 (fr) 2008-04-09 2009-03-07 Dispositif de compensation de jeu de soupape et procédé pour commander un tel dispositif, destinés à un moteur à combustion interne

Publications (1)

Publication Number Publication Date
EP2262980A1 true EP2262980A1 (fr) 2010-12-22

Family

ID=40627088

Family Applications (1)

Application Number Title Priority Date Filing Date
EP09730360A Withdrawn EP2262980A1 (fr) 2008-04-09 2009-03-07 Dispositif de compensation de jeu de soupape et procede pour commander un tel dispositif, destines a un moteur a combustion interne

Country Status (7)

Country Link
US (1) US8555833B2 (fr)
EP (1) EP2262980A1 (fr)
JP (1) JP5481727B2 (fr)
CN (1) CN101990594B (fr)
DE (1) DE102008017948A1 (fr)
RU (1) RU2450132C1 (fr)
WO (1) WO2009124623A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108603421B (zh) 2016-03-18 2020-03-27 康明斯公司 液压间隙调节器
WO2018063979A1 (fr) * 2016-09-28 2018-04-05 Cecil Adam C Rattrapeur de jeu hydraulique excentrique destiné à être utilisé avec un frein à relâchement de compression
CN109209544B (zh) * 2018-10-26 2020-06-30 上海中船三井造船柴油机有限公司 用于船用低速柴油机排气阀的自调整缓冲装置
CN111730600B (zh) * 2020-07-13 2022-11-25 安徽思卡瑞自动化工程有限公司 上料机器人的运动副关节间隙消除机构及其实施方法

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3572300A (en) * 1969-05-23 1971-03-23 Thomas Minor Engine brake
US3786792A (en) * 1971-05-28 1974-01-22 Mack Trucks Variable valve timing system
US4164917A (en) * 1977-08-16 1979-08-21 Cummins Engine Company, Inc. Controllable valve tappet for use with dual ramp cam
JPS5999013A (ja) 1982-11-26 1984-06-07 Fuji Valve Kk 内燃機関の油圧式弁間隙調整装置
CN2067756U (zh) * 1989-12-06 1990-12-19 易佑萱 内燃机液压摇臂
DE4334517A1 (de) * 1992-10-14 1994-04-21 Volkswagen Ag Rollentassenstößel für ein Hubventil
JPH0726922A (ja) * 1993-07-07 1995-01-27 Zexel Corp 内燃機関のバルブ制御装置
US5379737A (en) * 1993-08-26 1995-01-10 Jacobs Brake Technology Corporation Electrically controlled timing adjustment for compression release engine brakes
WO1997006355A1 (fr) * 1995-08-08 1997-02-20 Diesel Engine Retarders, Inc. Moteurs a combustion interne a commande combinee de came et de soupape electro-hydaulique
RU2105159C1 (ru) * 1995-09-07 1998-02-20 Виктор Александрович Соломин Устройство для компенсации зазоров в клапанном механизме
US5645031A (en) * 1996-01-18 1997-07-08 Meneely; Vincent Allan Compression release brake with hydraulically adjustable timing
US6971366B2 (en) * 2001-11-30 2005-12-06 Caterpillar Inc. Integral lash adjustor for hydraulic compression engine brake
JP2003328712A (ja) * 2002-05-17 2003-11-19 Suzuki Motor Corp 内燃機関の可変動弁制御装置
ITTO20020568A1 (it) * 2002-07-01 2004-01-02 Fiat Ricerche Motore a combustione interna con sistema idraulico a controllo elettronico per l'azionamento delle valvole e mezzi per compensare i cambiame
RU2231651C2 (ru) * 2002-07-02 2004-06-27 Синица Владислав Владимирович Гидрокомпенсатор зазора клапанного механизма
US6920868B2 (en) * 2002-09-12 2005-07-26 Jacobs Vehicle Systems, Inc. System and method for modifying engine valve lift
DE102004048071A1 (de) * 2004-10-02 2006-04-20 Ina-Schaeffler Kg Ventiltrieb für ein nockenbetätigtes Hubventil
CN2755290Y (zh) * 2004-12-10 2006-02-01 周曼桦 摩托车发动机用气门间隙自动调整器
JP2006170010A (ja) * 2004-12-14 2006-06-29 Toyota Motor Corp 内燃機関の動弁装置
DE102006031706A1 (de) 2006-07-08 2008-01-10 Daimlerchrysler Ag Hydraulisches Ventilspielausgleichselement einer Brennkraftmaschine
US7845327B2 (en) * 2007-08-19 2010-12-07 Ford Global Technologies, Llc Hydraulic lash adjuster with damping device
DE102008061412A1 (de) * 2008-07-11 2010-01-14 Man Nutzfahrzeuge Ag Hydraulischer Ventil- und EVB-Spielausgleich
WO2010014914A1 (fr) * 2008-07-31 2010-02-04 Pacbrake Company Module de commande de frein sur échappement autonome pour système de freinage du type dégagement par compression d'un moteur à combustion interne

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2009124623A1 *

Also Published As

Publication number Publication date
US20110056447A1 (en) 2011-03-10
CN101990594A (zh) 2011-03-23
CN101990594B (zh) 2013-06-12
JP2011516781A (ja) 2011-05-26
US8555833B2 (en) 2013-10-15
DE102008017948A1 (de) 2009-10-15
RU2450132C1 (ru) 2012-05-10
WO2009124623A1 (fr) 2009-10-15
JP5481727B2 (ja) 2014-04-23

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