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WO2009002379A3 - Internal combustion engine with variable compression ratio - Google Patents

Internal combustion engine with variable compression ratio Download PDF

Info

Publication number
WO2009002379A3
WO2009002379A3 PCT/US2008/005883 US2008005883W WO2009002379A3 WO 2009002379 A3 WO2009002379 A3 WO 2009002379A3 US 2008005883 W US2008005883 W US 2008005883W WO 2009002379 A3 WO2009002379 A3 WO 2009002379A3
Authority
WO
WIPO (PCT)
Prior art keywords
piston
coupler
pivot member
compression ratio
shifted
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
Application number
PCT/US2008/005883
Other languages
French (fr)
Other versions
WO2009002379A2 (en
Inventor
Michael Von Mayenburg
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.)
SCHLABACH CAROLYN
Original Assignee
SCHLABACH CAROLYN
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
Priority claimed from US12/011,494 external-priority patent/US7946260B2/en
Application filed by SCHLABACH CAROLYN filed Critical SCHLABACH CAROLYN
Publication of WO2009002379A2 publication Critical patent/WO2009002379A2/en
Publication of WO2009002379A3 publication Critical patent/WO2009002379A3/en
Anticipated expiration legal-status Critical
Ceased 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
    • F02B75/045—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of a variable connecting rod length

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

A coupler, such as a piston pin, is pivotally coupled to a piston such that the piston can pivot about a first axis relative to the coupler. A connecting rod is coupled to the coupler for pivoting about a second axis. The relative positions of the first and second axes can be shifted by pivoting an eccentric portion of the coupler to thereby vary the compression ratio of a piston cylinder within which the piston slides. The coupler comprises a pivot member engager portion that is selectively shifted from first to second positions to vary the compression rates in response to shifting of a pivot member. The pivot member engager is shifted from first to second positions as the piston approaches the bottom dead center position. The pivot member and pivot member engager disengage from one another as the piston travels away from the bottom dead center position.
PCT/US2008/005883 2007-06-22 2008-05-08 Internal combustion engine with variable compression ratio Ceased WO2009002379A2 (en)

Applications Claiming Priority (8)

Application Number Priority Date Filing Date Title
US93674107P 2007-06-22 2007-06-22
US60/936,741 2007-06-22
US95835207P 2007-07-03 2007-07-03
US60/958,352 2007-07-03
US349807P 2007-11-16 2007-11-16
US61/003,498 2007-11-16
US12/011,494 2008-01-25
US12/011,494 US7946260B2 (en) 2007-06-22 2008-01-25 Internal combustion engine with variable compression ratio

Publications (2)

Publication Number Publication Date
WO2009002379A2 WO2009002379A2 (en) 2008-12-31
WO2009002379A3 true WO2009002379A3 (en) 2009-02-26

Family

ID=39735328

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2008/005883 Ceased WO2009002379A2 (en) 2007-06-22 2008-05-08 Internal combustion engine with variable compression ratio

Country Status (2)

Country Link
EP (1) EP2006509A2 (en)
WO (1) WO2009002379A2 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010108582A1 (en) * 2009-03-26 2010-09-30 Ixetic Bad Homburg Gmbh Apparatus for changing the compression ratio in an internal combustion engine
KR101510324B1 (en) * 2009-10-06 2015-04-08 현대자동차 주식회사 Variable compression ratio device
KR101510323B1 (en) 2009-10-06 2015-04-08 현대자동차 주식회사 variable compression ratio device
US8851030B2 (en) 2012-03-23 2014-10-07 Michael von Mayenburg Combustion engine with stepwise variable compression ratio (SVCR)

Citations (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1386114A (en) * 1919-10-24 1921-08-02 Jedrzykowski Edmund Internal-combustion engine
US1463474A (en) * 1920-07-19 1923-07-31 Arthur A Lazier Timing device for internal-combustion engines
US4215660A (en) * 1978-04-28 1980-08-05 Finley Donald G Internal combustion engine
US5025757A (en) * 1990-09-13 1991-06-25 Larsen Gregory J Reciprocating piston engine with a varying compression ratio
US5146879A (en) * 1990-01-17 1992-09-15 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Variable compression ratio apparatus for internal combustion engine
US5417185A (en) * 1993-02-18 1995-05-23 Beattie; John F. E. Variable compression piston
US5908014A (en) * 1995-02-28 1999-06-01 Tk Design Ag Reciprocating piston type internal combustion engine with variable compression ratio
US5960750A (en) * 1997-02-03 1999-10-05 Meta Motoren- Und Energie- Technik Gmbh Device for changing compression of a reciprocating piston internal combustion engine
US20020002957A1 (en) * 2000-07-07 2002-01-10 Nissan Motor Co., Ltd. Variable compression ratio mechanism of reciprocating internal combustion engine
US20050150471A1 (en) * 2004-01-09 2005-07-14 Ford Global Technologies Llc Variable compression ratio connecting rod for internal combustion engine
US6966282B2 (en) * 2003-07-31 2005-11-22 Honda Motor Co., Ltd. Internal combustion engine variable compression ratio system
US7191741B2 (en) * 2002-12-16 2007-03-20 Nissan Motor Co., Ltd. Pin connected link mechanism

Patent Citations (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1386114A (en) * 1919-10-24 1921-08-02 Jedrzykowski Edmund Internal-combustion engine
US1463474A (en) * 1920-07-19 1923-07-31 Arthur A Lazier Timing device for internal-combustion engines
US4215660A (en) * 1978-04-28 1980-08-05 Finley Donald G Internal combustion engine
US5146879A (en) * 1990-01-17 1992-09-15 Mitsubishi Jidosha Kogyo Kabushiki Kaisha Variable compression ratio apparatus for internal combustion engine
US5025757A (en) * 1990-09-13 1991-06-25 Larsen Gregory J Reciprocating piston engine with a varying compression ratio
US5025757B1 (en) * 1990-09-13 1992-10-27 J Larsen Gregory
US5417185A (en) * 1993-02-18 1995-05-23 Beattie; John F. E. Variable compression piston
US5908014A (en) * 1995-02-28 1999-06-01 Tk Design Ag Reciprocating piston type internal combustion engine with variable compression ratio
US5960750A (en) * 1997-02-03 1999-10-05 Meta Motoren- Und Energie- Technik Gmbh Device for changing compression of a reciprocating piston internal combustion engine
US20020002957A1 (en) * 2000-07-07 2002-01-10 Nissan Motor Co., Ltd. Variable compression ratio mechanism of reciprocating internal combustion engine
US7191741B2 (en) * 2002-12-16 2007-03-20 Nissan Motor Co., Ltd. Pin connected link mechanism
US6966282B2 (en) * 2003-07-31 2005-11-22 Honda Motor Co., Ltd. Internal combustion engine variable compression ratio system
US20050150471A1 (en) * 2004-01-09 2005-07-14 Ford Global Technologies Llc Variable compression ratio connecting rod for internal combustion engine

Also Published As

Publication number Publication date
WO2009002379A2 (en) 2008-12-31
EP2006509A2 (en) 2008-12-24

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