WO1999056007A1 - Hydraulisches ventilspielausgleichselement - Google Patents
Hydraulisches ventilspielausgleichselement Download PDFInfo
- Publication number
- WO1999056007A1 WO1999056007A1 PCT/EP1999/002402 EP9902402W WO9956007A1 WO 1999056007 A1 WO1999056007 A1 WO 1999056007A1 EP 9902402 W EP9902402 W EP 9902402W WO 9956007 A1 WO9956007 A1 WO 9956007A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- valve
- pressure
- cylinder part
- lash adjuster
- piston
- 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
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
- F01L1/245—Hydraulic tappets
Definitions
- the invention relates to a hydraulic valve lash adjuster (HVA) according to the preamble of claims 1 and 2.
- HVA hydraulic valve lash adjuster
- valve lash adjuster is known from DE-OS 38 19 927.
- There is an additional check valve is provided in a conventional hydraulic valve lash adjuster element, which is to prevent the oil-filled reservoir located in front of the high-pressure chamber from being emptied when the engine is at a standstill.
- this does not prevent the oil filling of the working or high-pressure chamber from decreasing as a result of the leakage oil passing between the cylinder part and the piston part, and the length compensation element correspondingly shortening, as long as the lash adjuster element is loaded by the cam of the camshaft when the valve is at a standstill. This is undesirable in the idle state, since it leads to increased valve play during the subsequent starting process.
- HVA is known from EP 324085.
- the readjusting function of the HVA is to be be switched.
- the HVA has a sealed high-pressure chamber and a capillary overflow hole - through which "leakage oil" can flow out to ensure a decrease in length of the HVA.
- a valve body actuated by a piston is pressed into the valve seat. Both the inlet to the high-pressure chamber and the opening of the capillary overflow bore in the valve seat surface are closed.
- the opening of the capillary overflow bore directly into the seat of the valve is supposed to prevent the pressure in the high-pressure chamber from acting on the valve body as a whole and thus opening the valve.
- the invention is concerned with the problem of creating a hydraulic valve lash compensation element which does not change the set length in the idle state even under the application of high forces.
- This problem is solved by a hydraulic valve lash adjuster according to claim 1 or 2.
- Advantageous further developments are the subject of the dependent claims.
- a conventional valve lash adjuster was used for claim 1, and the valve lash adjuster known from DE-OS 38 19 927 for claim 2.
- the basic idea of the invention is to prevent the leakage oil loss which occurs in hydraulic valve lash compensation elements and is necessary for the function and which occurs between the cylinder part and the piston part when the engine is at a standstill. According to the exemplary embodiment, this takes place in that the leakage oil is introduced into the space which lies between the check valve of the high-pressure space and a second valve. This leads to a self-reinforcing sealing function of the second valve when the engine is stopped. The prerequisite for this is that the leakage oil cannot flow away in any other way. That is why the gap is between Particularly seal the cylinder part and piston part of the play compensation element beyond the overflow bore, e.g. B. by particularly tight play or a special seal.
- Fig. 1 an inventive valve lash adjuster.
- the valve clearance compensation element consists of a cylinder part 1 and a piston part 2, which are braced against one another by a spring 3.
- the relative movement of cylinder part 1 and piston part 2 is limited by a spring ring 8.
- the oil is supplied through the feed bore 19 in the pressure piece 7.
- the spring 3 lies in a high-pressure or working space 20 formed between the cylinder part 1 and the piston part 2, which is formed by a check valve 4 - consisting of a valve closing part 11, a valve spring 12 and a valve cage 13 - is sealed.
- the valve lash adjuster corresponds to the conventional design.
- a second valve 5 which has a valve cage 10 with an integrated valve spring and a closure part 9.
- the closure part 9 can be lifted against the pressure of the valve spring by an actuating piston 6 from the valve seat.
- the actuating piston 6 has a larger effective area for the oil pressure present on its upper side than on its underside.
- the resulting force on the piston 6 is available for the opening function of the valve and is transmitted to the closure part 9 via the surface 16.
- the leakage oil escaping between piston part 2 and actuating piston 6 flows through the relief bore 14 without pressure from the HVA.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Valve-Gear Or Valve Arrangements (AREA)
- Valve Device For Special Equipments (AREA)
Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP99919221A EP1075589B1 (de) | 1998-04-28 | 1999-04-09 | Hydraulisches ventilspielausgleichselement |
| DE59902193T DE59902193D1 (de) | 1998-04-28 | 1999-04-09 | Hydraulisches ventilspielausgleichselement |
| US09/673,469 US6318325B1 (en) | 1998-04-28 | 1999-04-09 | Hydraulic valve-play compensation element |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19818893A DE19818893A1 (de) | 1998-04-28 | 1998-04-28 | Hydraulisches Ventilspielausgleichselement |
| DE19818893.5 | 1998-04-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1999056007A1 true WO1999056007A1 (de) | 1999-11-04 |
Family
ID=7866007
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1999/002402 Ceased WO1999056007A1 (de) | 1998-04-28 | 1999-04-09 | Hydraulisches ventilspielausgleichselement |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US6318325B1 (de) |
| EP (1) | EP1075589B1 (de) |
| DE (2) | DE19818893A1 (de) |
| WO (1) | WO1999056007A1 (de) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10012225A1 (de) | 2000-03-14 | 2001-09-20 | Mahle Ventiltrieb Gmbh | An einen Fluidkreislauf angeschlossenes hydraulisches Spielausgleichselement |
| DE10031802B4 (de) * | 2000-07-04 | 2007-11-15 | Daimlerchrysler Ag | Hydraulische Stellvorrichtung |
| RU2195557C2 (ru) * | 2000-09-18 | 2002-12-27 | Вахрамов Николай Александрович | Гидравлическое устройство для компенсации зазоров в клапанном механизме двигателя внутреннего сгорания |
| DE10129729A1 (de) * | 2001-06-20 | 2003-01-23 | Mahle Ventiltrieb Gmbh | Hydraulisches Spielausgleichselement für einen Ventiltrieb eines Verbrennungsmotors |
| DE10143012A1 (de) * | 2001-09-03 | 2003-03-20 | Daimler Chrysler Ag | Hydraulisches Spielausgleichselement, insbesondere für einen Ventiltrieb eines Verbrennungsmotors |
| DE10231110A1 (de) | 2002-07-10 | 2004-01-29 | Daimlerchrysler Ag | Einrichtung zum Betrieb eines hydraulisch arbeitenden Ventilspiel-Ausgleichselementes eines Verbrennungsmotors |
| DE10236492A1 (de) * | 2002-08-09 | 2004-02-19 | Daimlerchrysler Ag | Hydraulisches Spielausgleichselement |
| US7273026B2 (en) * | 2002-10-18 | 2007-09-25 | Maclean-Fogg Company | Roller follower body |
| US6871622B2 (en) * | 2002-10-18 | 2005-03-29 | Maclean-Fogg Company | Leakdown plunger |
| DE102005029831A1 (de) | 2004-07-23 | 2006-03-16 | Ina-Schaeffler Kg | Hydraulisches Ventilspielausgleichselement (HVA) |
| DE102006031706B4 (de) * | 2006-07-08 | 2025-10-09 | Daimler Truck AG | Hydraulisches Ventilspielausgleichselement einer Brennkraftmaschine |
| DE102010018208A1 (de) * | 2010-04-26 | 2011-10-27 | Schaeffler Technologies Gmbh & Co. Kg | Hydraulisches Ventilspiel-Ausgleichselement für Hubkolbenbrennkraftmaschinen |
| DE102011005575A1 (de) * | 2011-03-15 | 2012-09-20 | Schaeffler Technologies Gmbh & Co. Kg | Ventiltrieb mit Zusatzhub im Nockengrundkreis |
| EP2864600B1 (de) * | 2012-01-06 | 2018-08-08 | Scuderi Group, Inc. | Ventilbetätigungssystem mit variablem leerlauf |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1236857B (de) * | 1963-05-15 | 1967-03-16 | Richard Kuechen | Hydraulische Ventilspielausgleichsvorrichtung fuer Brennkraftmaschinen |
| DE3819927A1 (de) | 1987-06-22 | 1989-01-05 | Volkswagen Ag | Hydraulisches ventilspielausgleichselement |
| EP0324085A1 (de) | 1988-01-15 | 1989-07-19 | Daimler-Benz Aktiengesellschaft | Hydraulisches Spielausgleichselement |
| JPH01232103A (ja) * | 1988-03-12 | 1989-09-18 | Mazda Motor Corp | エンジンのバルブ駆動装置 |
| DE9318108U1 (de) * | 1993-11-26 | 1994-01-20 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Stößel |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4633827A (en) * | 1985-10-07 | 1987-01-06 | Eaton Corporation | Hydraulic lash adjuster with combined reservoir extension and metering system |
| GB2185549B (en) * | 1985-10-15 | 1990-01-24 | Honda Motor Co Ltd | Hydraulic lash adjuster for use in a valve operating mechanism |
| US4977867A (en) * | 1989-08-28 | 1990-12-18 | Rhoads Jack L | Self-adjusting variable duration hydraulic lifter |
| DE4225012C1 (en) * | 1992-07-29 | 1993-07-15 | Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De | Hydraulic actuator for lifting valve with pressurised oil piston - has play compensation piston, located between working piston and valve, and loaded by compression spring |
-
1998
- 1998-04-28 DE DE19818893A patent/DE19818893A1/de not_active Withdrawn
-
1999
- 1999-04-09 US US09/673,469 patent/US6318325B1/en not_active Expired - Lifetime
- 1999-04-09 EP EP99919221A patent/EP1075589B1/de not_active Expired - Lifetime
- 1999-04-09 DE DE59902193T patent/DE59902193D1/de not_active Expired - Lifetime
- 1999-04-09 WO PCT/EP1999/002402 patent/WO1999056007A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1236857B (de) * | 1963-05-15 | 1967-03-16 | Richard Kuechen | Hydraulische Ventilspielausgleichsvorrichtung fuer Brennkraftmaschinen |
| DE3819927A1 (de) | 1987-06-22 | 1989-01-05 | Volkswagen Ag | Hydraulisches ventilspielausgleichselement |
| EP0324085A1 (de) | 1988-01-15 | 1989-07-19 | Daimler-Benz Aktiengesellschaft | Hydraulisches Spielausgleichselement |
| JPH01232103A (ja) * | 1988-03-12 | 1989-09-18 | Mazda Motor Corp | エンジンのバルブ駆動装置 |
| DE9318108U1 (de) * | 1993-11-26 | 1994-01-20 | INA Wälzlager Schaeffler KG, 91074 Herzogenaurach | Stößel |
Non-Patent Citations (1)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 559 (M - 905) 12 December 1989 (1989-12-12) * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19818893A1 (de) | 1999-11-04 |
| EP1075589A1 (de) | 2001-02-14 |
| US6318325B1 (en) | 2001-11-20 |
| DE59902193D1 (de) | 2002-09-05 |
| EP1075589B1 (de) | 2002-07-31 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE69718115T2 (de) | Motorbremsverfahren mit von Auslassimpulsen verstärkter Verdichtung | |
| DE3150083C2 (de) | ||
| WO1999056007A1 (de) | Hydraulisches ventilspielausgleichselement | |
| DE19650987A1 (de) | Bremssystem für einen Innenverbrennungsmotor | |
| DE19716750C2 (de) | Motorbremssystem für einen Verbrennungsmotor | |
| DE10321413A1 (de) | Elektromagnetisch betätigbares Ventil | |
| DE10134644A1 (de) | Elektrohydraulische Ventilsteuerung | |
| DE19712668C1 (de) | Ventilantrieb für Gaswechselventile von Brennkraftmaschinen | |
| DE102007014248A1 (de) | Hubkolbenbrennkraftmaschine mit Motorbremseinrichtung | |
| DE3801363A1 (de) | Vorrichtung zum steuern von einlass- oder auslassventilen | |
| DE102009011983A1 (de) | Hydraulikeinheit für einen Zylinderkopf einer Brennkraftmaschine mit hydraulisch variablem Gaswechselventiltrieb | |
| EP1212517A1 (de) | Nockenwellenversteller für brennkraftmaschinen | |
| DE102021114644A1 (de) | Hydraulische Spielausgleichseinheit zum Einstecken in einen Kipphebel für einen Ventiltrieb einer Brennkraftmaschine und Kipphebel mit einer solchen hydraulischen Spielausgleichseinheit | |
| EP0767295B1 (de) | Hydraulischer Ventilantrieb | |
| DE69816782T2 (de) | Kraftstoffeinspritzpumpe mit hydraulisch gesteuertem überlaufventil | |
| DE102004054108B4 (de) | Dreiwegeventil und dieses aufweisende Brennstoffeinspritzvorrichtung | |
| EP1701007B1 (de) | Hydraulisches Ventilspielausgleichselement | |
| DE4202542A1 (de) | Variabler ventiltrieb fuer ein hubventil | |
| DE69117206T2 (de) | Verbessertes Einspritzventil für Brennkraftmaschinen | |
| WO2011003680A1 (de) | Flachdichtung | |
| DE102016205819A1 (de) | Vorrichtung zu der Kühlung eines Kolbens eines Verbrennungsmotors | |
| DE2941084A1 (de) | Hydraulischer tassenstoessel mit hydrodynamischer entlueftung | |
| DE19951052C2 (de) | Motorbremsvorrichtung für eine Verbrennungskraftmaschine | |
| DE10101802A1 (de) | Ventil zum Steuern von Flüssigkeiten | |
| DE60123561T2 (de) | Kompressionsmotorbremse und Verfahren |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 1999919221 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 09673469 Country of ref document: US |
|
| WWP | Wipo information: published in national office |
Ref document number: 1999919221 Country of ref document: EP |
|
| WWG | Wipo information: grant in national office |
Ref document number: 1999919221 Country of ref document: EP |