DE602004000901D1 - Hydraulic actuator for an internal combustion engine - Google Patents

Hydraulic actuator for an internal combustion engine

Info

Publication number
DE602004000901D1
DE602004000901D1 DE602004000901T DE602004000901T DE602004000901D1 DE 602004000901 D1 DE602004000901 D1 DE 602004000901D1 DE 602004000901 T DE602004000901 T DE 602004000901T DE 602004000901 T DE602004000901 T DE 602004000901T DE 602004000901 D1 DE602004000901 D1 DE 602004000901D1
Authority
DE
Germany
Prior art keywords
combustion engine
internal combustion
piston
hydraulic actuator
chambers
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.)
Active
Application number
DE602004000901T
Other languages
German (de)
Other versions
DE602004000901T2 (en
Inventor
Aurelien Huss
Olivier Venuti
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.)
PSA Automobiles SA
Original Assignee
Peugeot Citroen Automobiles SA
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 Peugeot Citroen Automobiles SA filed Critical Peugeot Citroen Automobiles SA
Publication of DE602004000901D1 publication Critical patent/DE602004000901D1/en
Application granted granted Critical
Publication of DE602004000901T2 publication Critical patent/DE602004000901T2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02D—CONTROLLING COMBUSTION ENGINES
    • F02D15/00—Varying compression ratio
    • F02D15/02—Varying compression ratio by alteration or displacement of piston stroke
    • 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
    • F02B75/048—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable crank stroke length

Abstract

The actuator has a unit including two passages and a control unit to control fluid flow between lower and upper chambers (24, 25) by valves. The unit maintains a piston (22) at a fixed position or adjusts position of the piston in a body by selected passage of fluid between the chambers due to pressure difference in the chambers, when a force is exerted on the piston by a hinged type connecting rod assembly. An independent claim is also included for an internal combustion engine.
DE602004000901T 2003-10-02 2004-10-01 Hydraulic actuator for an internal combustion engine Active DE602004000901T2 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR0311566A FR2860551B1 (en) 2003-10-02 2003-10-02 HYDRAULIC ACTUATOR FOR INTERNAL COMBUSTION ENGINE AND INTERNAL COMBUSTION ENGINE COMPRISING AT LEAST ONE SUCH HYDRAULIC ACTUATOR
FR0311566 2003-10-02

Publications (2)

Publication Number Publication Date
DE602004000901D1 true DE602004000901D1 (en) 2006-06-22
DE602004000901T2 DE602004000901T2 (en) 2006-11-30

Family

ID=34307368

Family Applications (1)

Application Number Title Priority Date Filing Date
DE602004000901T Active DE602004000901T2 (en) 2003-10-02 2004-10-01 Hydraulic actuator for an internal combustion engine

Country Status (5)

Country Link
EP (1) EP1520970B1 (en)
AT (1) ATE326623T1 (en)
DE (1) DE602004000901T2 (en)
ES (1) ES2264098T3 (en)
FR (1) FR2860551B1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4882912B2 (en) * 2007-08-10 2012-02-22 日産自動車株式会社 Variable compression ratio internal combustion engine
DE102009006633A1 (en) * 2009-01-29 2010-08-05 Audi Ag Internal combustion engine with extended expansion stroke and adjustable compression ratio
DE102010009909B3 (en) * 2010-03-02 2010-10-14 Daimler Ag Reciprocating piston engine for adjustment compression ratio in crankshaft of combustion engine, comprises crankshaft with crank pin, at which lever element is connected with corresponding piston rod
AT521676B1 (en) * 2018-10-08 2020-04-15 Avl List Gmbh Length-adjustable connecting rod with mechanically operated valve

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4131094A (en) * 1977-02-07 1978-12-26 Crise George W Variable displacement internal combustion engine having automatic piston stroke control
DE3148193A1 (en) * 1981-12-05 1983-06-09 Daimler-Benz Ag, 7000 Stuttgart Piston internal combustion engine with variable compression ratio
JPS6241970A (en) * 1985-08-20 1987-02-23 Toyota Motor Corp Mechanism for varying piston stroke
GB9719536D0 (en) * 1997-09-12 1997-11-19 Broadsuper Ltd Internal combustion engines

Also Published As

Publication number Publication date
ES2264098T3 (en) 2006-12-16
FR2860551B1 (en) 2007-05-11
EP1520970A1 (en) 2005-04-06
FR2860551A1 (en) 2005-04-08
EP1520970B1 (en) 2006-05-17
DE602004000901T2 (en) 2006-11-30
ATE326623T1 (en) 2006-06-15

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8320 Willingness to grant licences declared (paragraph 23)