DE3865727D1 - PISTON WITH VARIABIER HEIGHT. - Google Patents

PISTON WITH VARIABIER HEIGHT.

Info

Publication number
DE3865727D1
DE3865727D1 DE8888106362T DE3865727T DE3865727D1 DE 3865727 D1 DE3865727 D1 DE 3865727D1 DE 8888106362 T DE8888106362 T DE 8888106362T DE 3865727 T DE3865727 T DE 3865727T DE 3865727 D1 DE3865727 D1 DE 3865727D1
Authority
DE
Germany
Prior art keywords
chamber
piston
height
variabier
crown
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
DE8888106362T
Other languages
German (de)
Inventor
Wolfgang Ruffing
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke 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 Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Priority to DE8888106362T priority Critical patent/DE3865727D1/en
Application granted granted Critical
Publication of DE3865727D1 publication Critical patent/DE3865727D1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • 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
    • F02B75/044—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of an adjustable piston length
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M1/00—Pressure lubrication
    • F01M1/08—Lubricating systems characterised by the provision therein of lubricant jetting means
    • F01M2001/086—Lubricating systems characterised by the provision therein of lubricant jetting means for lubricating gudgeon pins

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Output Control And Ontrol Of Special Type Engine (AREA)

Abstract

The adjustable-height piston is particularly for an internal-combustion engine, having a control chamber between the crown and bottom part. The flow of fluid to and from the chamber (4) is regulated by a component (19) operated as desired, typically a slide regulating both inlet and outlet ports (9,11). There can also be a damping chamber (15) between crown and bottom part, filled and emptied in iverse proportion to the control chamber and with a non-return valve (17) in the passage (15) to it. A slide shuts the passage off between valve and chamber.
DE8888106362T 1987-05-04 1988-04-21 PISTON WITH VARIABIER HEIGHT. Expired - Lifetime DE3865727D1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE8888106362T DE3865727D1 (en) 1987-05-04 1988-04-21 PISTON WITH VARIABIER HEIGHT.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19873714762 DE3714762A1 (en) 1987-05-04 1987-05-04 PISTON WITH VARIABLE HEIGHT
DE8888106362T DE3865727D1 (en) 1987-05-04 1988-04-21 PISTON WITH VARIABIER HEIGHT.

Publications (1)

Publication Number Publication Date
DE3865727D1 true DE3865727D1 (en) 1991-11-28

Family

ID=6326777

Family Applications (2)

Application Number Title Priority Date Filing Date
DE19873714762 Granted DE3714762A1 (en) 1987-05-04 1987-05-04 PISTON WITH VARIABLE HEIGHT
DE8888106362T Expired - Lifetime DE3865727D1 (en) 1987-05-04 1988-04-21 PISTON WITH VARIABIER HEIGHT.

Family Applications Before (1)

Application Number Title Priority Date Filing Date
DE19873714762 Granted DE3714762A1 (en) 1987-05-04 1987-05-04 PISTON WITH VARIABLE HEIGHT

Country Status (3)

Country Link
EP (1) EP0289872B1 (en)
DE (2) DE3714762A1 (en)
ES (1) ES2027337T3 (en)

Families Citing this family (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4005906A1 (en) * 1990-02-24 1991-08-29 Mahle Gmbh Variable-compression IC piston - has sliding crown and has filter in oil passage to control chambers
DE4015267C1 (en) * 1990-05-12 1991-10-24 Daimler-Benz Aktiengesellschaft, 7000 Stuttgart, De
DE4018344C1 (en) * 1990-06-08 1992-01-02 Mtu Friedrichshafen Gmbh Piston for IC-engine - has central section of piston attached to underside of guide ring
DE4038549C1 (en) * 1990-12-04 1992-01-09 Mercedes-Benz Aktiengesellschaft, 7000 Stuttgart, De IC engine oil pressure regulator - has piston control chamber connected to oil circuit pump assembly
DE4316798C2 (en) * 1993-05-19 2002-06-27 Reliance Electric Ind Co Method for controlling motor start-up and start-up phase in drive devices for chain drives of face conveyors or planing systems and corresponding drive devices
DE19813398C1 (en) * 1998-03-26 1999-09-09 Blodig Compression ratio and timing setting device for i.c engine e.g. 2-stroke engine
DE19955250B4 (en) 1999-11-17 2005-05-04 Robert Bosch Gmbh Method and device for monitoring the function of a variable cylinder compression
US6752105B2 (en) 2002-08-09 2004-06-22 The United States Of America As Represented By The Administrator Of The United States Environmental Protection Agency Piston-in-piston variable compression ratio engine
WO2008100219A1 (en) * 2007-02-13 2008-08-21 Mk Piston Aktiebolag Combustion engine
DE102008005333B4 (en) * 2008-01-21 2010-06-10 Lemouré, Suheyla Reciprocating internal combustion engine with variable compression ratio
DE102010041103A1 (en) 2010-09-21 2012-03-22 Bayerische Motoren Werke Aktiengesellschaft Piston for lifting cylinder combustion engine, has bistable spring board formed at large extent at round face portion of piston head, where bistable spring board deforms inward to concave shape towards piston
CN102330617B (en) * 2011-08-31 2013-04-03 李钢 Adaptive variable compression engine piston
DE102013103685B4 (en) * 2013-04-12 2023-09-21 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Switching valve and internal combustion engine with such a switching valve
DE102013105389B4 (en) * 2013-05-27 2021-12-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Changeover valve and internal combustion engine with such a changeover valve
DE102013111617B4 (en) * 2013-10-22 2021-12-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Changeover valve and internal combustion engine with such a changeover valve
DE102013111616B4 (en) * 2013-10-22 2021-12-23 Dr. Ing. H.C. F. Porsche Aktiengesellschaft Changeover valve and internal combustion engine with such a changeover valve
DE102014200162B4 (en) 2014-01-09 2022-09-29 Hochschule Heilbronn Machine, in particular an internal combustion engine, with a movable component that is equipped with a switchable valve
US9856790B2 (en) 2015-08-10 2018-01-02 Hyundai Motor Company Variable compression ratio apparatus

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE461459C (en) * 1926-08-03 1932-02-09 Erich Schweter Dipl Ing Device for changing the compression area
US3185137A (en) * 1963-06-26 1965-05-25 Continental Aviat & Eng Corp Valve mounting and sealing structure
US3407791A (en) * 1967-12-08 1968-10-29 Continental Aviat & Eng Corp Supply valve assembly for variable compression ratio piston assembly
US3405697A (en) * 1967-12-08 1968-10-15 Continental Aviat & Eng Corp Hollow valve construction for variable compression ratio piston
GB2110791B (en) * 1981-11-25 1985-07-24 British Internal Combust Eng Variable compression ratio pistons
DE3416346A1 (en) * 1984-05-03 1985-11-07 Mahle Gmbh, 7000 Stuttgart Piston with adjustable compression height for combustion engines
EP0191759A1 (en) * 1984-08-29 1986-08-27 CASWELL, Dwight Allan Controlled variable compression ratio piston for an internal combustion engine

Also Published As

Publication number Publication date
EP0289872A3 (en) 1990-02-28
EP0289872A2 (en) 1988-11-09
EP0289872B1 (en) 1991-10-23
DE3714762A1 (en) 1988-11-24
ES2027337T3 (en) 1992-06-01
DE3714762C2 (en) 1990-08-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee