EP1087109B1 - Ventilantrieb für ein Ventil eines Verbrennungsmotors - Google Patents

Ventilantrieb für ein Ventil eines Verbrennungsmotors Download PDF

Info

Publication number
EP1087109B1
EP1087109B1 EP00120615A EP00120615A EP1087109B1 EP 1087109 B1 EP1087109 B1 EP 1087109B1 EP 00120615 A EP00120615 A EP 00120615A EP 00120615 A EP00120615 A EP 00120615A EP 1087109 B1 EP1087109 B1 EP 1087109B1
Authority
EP
European Patent Office
Prior art keywords
valve
plunger
main
valve drive
throttle bore
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.)
Expired - Lifetime
Application number
EP00120615A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP1087109A2 (de
EP1087109A3 (de
Inventor
Diethard Plohberger
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.)
Innio Jenbacher GmbH and Co OG
Original Assignee
GE Jenbacher GmbH and Co OHG
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 GE Jenbacher GmbH and Co OHG filed Critical GE Jenbacher GmbH and Co OHG
Priority to AT00120615T priority Critical patent/ATE249574T1/de
Publication of EP1087109A2 publication Critical patent/EP1087109A2/de
Publication of EP1087109A3 publication Critical patent/EP1087109A3/de
Application granted granted Critical
Publication of EP1087109B1 publication Critical patent/EP1087109B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • 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

Definitions

  • the present invention relates to a valve drive for a valve of an internal combustion engine, wherein the valve is connected to a arranged in a cylinder chamber main piston which is acted upon to open the valve with inflowing into the cylinder chamber pressure fluid and wherein a closing spring is provided, which the valve in the closing direction applied.
  • the object of the invention is therefore to provide a valve drive which is easier to manufacture and substantially independent of the state of wear of the valve.
  • a movable relative to the main piston piston is arranged, which is provided with a throttle bore of the intermediate piston divides the cylinder space, so that a portion of the pressurized fluid must flow through the throttle bore therethrough.
  • a compression spring is arranged between the main piston and the intermediate piston. Due to the spring, which presses against the main and the intermediate piston, pressure fluid is sucked into the space when relaxing the spring.
  • the intermediate piston has a preferably pin-shaped stop on the side facing the pressure oil line.
  • the stopper is formed on the side facing the pressure oil pipe side of the intermediate piston, a cavity which ensures that the pressure oil regardless of the position of the throttle bore unhindered on the pressure oil line and can flow.
  • the size of the throttle bore is less than 10%, preferably about 5 to 7% of the diameter of the intermediate piston.
  • FIGS. 1 to 3 show a valve drive according to the invention in different positions during a cycle.
  • the valve train consists in a known manner of a poppet valve V with closing spring S and a hydraulic main piston HK. This causes supply of the cylinder space Z with pressurized oil through the cross-section D opening of the valve. When the oil pressure is released, the valve V closes and the oil is displaced from the cylinder space Z.
  • the advantage of the arrangement according to the invention is that the damping path .DELTA.s is independent of the distance s between the main piston HK and the intermediate piston ZK. The distance s changes over time with increasing valve wear. However, the damping path ⁇ s is only a function of time, the diameter d of the throttle bore B, the spring force of the spring F and the oil viscosity.
  • the throttle bore B can be made very accurate.
  • the leakage between the main piston HK and the intermediate piston ZK on the one hand and the cylinder housing G on the other hand can be completely avoided by conventional seals, so that there can be no tolerance-related deviations of the damping path between a number of valve drives of a motor.
  • the system is also self-regulating in that, with cold oil and / or high oil viscosity, the pitch increment ⁇ s is lower than with warm oil and / or low oil viscosity. In the former case, however, the closing speed of the valve V by the higher wall friction of the oil in the lines and the flow resistance through the throttle B is greater, so that a total of a smaller damping path ⁇ s is sufficient or desired.

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)
  • Fuel-Injection Apparatus (AREA)
EP00120615A 1999-09-22 2000-09-21 Ventilantrieb für ein Ventil eines Verbrennungsmotors Expired - Lifetime EP1087109B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT00120615T ATE249574T1 (de) 1999-09-22 2000-09-21 Ventilantrieb für ein ventil eines verbrennungsmotors

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT0161799A AT410696B (de) 1999-09-22 1999-09-22 Ventilantrieb für ein ventil eines verbrennungsmotors
AT161799 1999-09-22

Publications (3)

Publication Number Publication Date
EP1087109A2 EP1087109A2 (de) 2001-03-28
EP1087109A3 EP1087109A3 (de) 2002-08-14
EP1087109B1 true EP1087109B1 (de) 2003-09-10

Family

ID=3517296

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00120615A Expired - Lifetime EP1087109B1 (de) 1999-09-22 2000-09-21 Ventilantrieb für ein Ventil eines Verbrennungsmotors

Country Status (5)

Country Link
US (1) US6382147B1 (es)
EP (1) EP1087109B1 (es)
AT (2) AT410696B (es)
DE (1) DE50003618D1 (es)
ES (1) ES2203385T3 (es)

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6584885B2 (en) 2001-06-12 2003-07-01 Visteon Global Technologies, Inc. Variable lift actuator
DE10147299A1 (de) * 2001-09-26 2003-04-24 Bosch Gmbh Robert Vorrichtung zur Steuerung eines Öffnungsquerschnitts in einem Verbrennungszylinder einer Brennkraftmaschine
JP2004084670A (ja) * 2002-08-28 2004-03-18 Man B & W Diesel As 水圧で作動されるバルブ
DE102004018359B4 (de) * 2003-04-12 2013-12-24 Mahle Ventiltrieb Gmbh Hydraulischer Stellantrieb von insbesondere Gaswechselventilen eines Verbrennungsmotors
FR2878559B1 (fr) * 2004-11-30 2009-07-03 Renault Sas Dispositif d'actionnement des soupapes d'un moteur thermique sans arbre a cames et piston de soupape en deux parties
SE531535C2 (sv) * 2006-02-14 2009-05-12 Cargine Engineering Ab Metod för bromsning av en aktuatorkolv, samt en pneumatisk aktuator
DE102006012067B4 (de) * 2006-03-16 2016-03-24 Volkswagen Ag Hydraulische Ventilbetätigungsvorrichtung für ein Gaswechselventil
DE102008054014A1 (de) * 2008-10-30 2010-05-06 Man Nutzfahrzeuge Aktiengesellschaft Gaswechselventil für Brennkraftmaschinen
US8578897B2 (en) 2011-04-12 2013-11-12 Ford Global Technologies, Llc Valve system
KR101251522B1 (ko) * 2011-05-04 2013-04-05 현대자동차주식회사 유압 밸브 장치
ITBO20130057A1 (it) * 2013-02-13 2014-08-14 Gnutti Spa Trafilierie Punteria con sistema compensatore idraulico del gioco utilizzabile in un cinematismo, in particolare nella catena cinematica di collegamento tra un albero a camme e una valvola in un motore endotermico.
DE102017113783A1 (de) 2017-06-21 2018-12-27 Man Truck & Bus Ag Kraftübertragungsvorrichtung

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH243908A (de) * 1944-11-27 1946-08-15 Schweizerische Lokomotiv Flüssigkeitsbremse mit Rückschlagventil am Passivkolben von hydraulisch gesteuerten Ventilen von Brennkraftmaschinen.
JPS60252111A (ja) * 1984-05-28 1985-12-12 Yanmar Diesel Engine Co Ltd 内燃機関用油圧動弁装置のダンピング機構
ES2012474B3 (es) * 1986-07-29 1990-04-01 Bayerische Motoren Werke Ag Instalacion de mando hidraulico de valvulas de elevacion
US4796573A (en) * 1987-10-02 1989-01-10 Allied-Signal Inc. Hydraulic engine valve lifter assembly
US5275136A (en) * 1991-06-24 1994-01-04 Ford Motor Company Variable engine valve control system with hydraulic damper
EP0614507B1 (en) * 1991-11-29 1996-09-25 Caterpillar Inc. Engine valve seating velocity hydraulic snubber
US5216988A (en) * 1992-10-15 1993-06-08 Siemens Automotive L.P. Dual bucket hydraulic actuator
JP2870682B2 (ja) * 1993-11-02 1999-03-17 日鍛バルブ株式会社 ダンパ付油圧式吸排気弁駆動装置
DE4443169A1 (de) * 1994-12-05 1996-06-13 Dens Juergen Dipl Ing Dipl Wir Ventil mit variabler, elektronischer Steuerung für Wärmekraftmaschinen
US5503120A (en) * 1995-01-18 1996-04-02 Siemens Automotive Corporation Engine valve timing control system and method
DE19749302A1 (de) * 1997-11-07 1999-05-12 Bayerische Motoren Werke Ag Hydraulische Betätigungsvorrichtung für ein Gaswechselventil einer Brennkraftmaschine
WO1999027242A2 (en) * 1997-11-21 1999-06-03 Diesel Engine Retarders, Inc. Device to limit valve seating velocities in limited lost motion tappets

Also Published As

Publication number Publication date
US6382147B1 (en) 2002-05-07
ATA161799A (de) 2002-11-15
EP1087109A2 (de) 2001-03-28
AT410696B (de) 2003-06-25
ATE249574T1 (de) 2003-09-15
DE50003618D1 (de) 2003-10-16
EP1087109A3 (de) 2002-08-14
ES2203385T3 (es) 2004-04-16

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