WO2008042154A3 - Crankshadft with variable stroke and oil seal - Google Patents

Crankshadft with variable stroke and oil seal Download PDF

Info

Publication number
WO2008042154A3
WO2008042154A3 PCT/US2007/020640 US2007020640W WO2008042154A3 WO 2008042154 A3 WO2008042154 A3 WO 2008042154A3 US 2007020640 W US2007020640 W US 2007020640W WO 2008042154 A3 WO2008042154 A3 WO 2008042154A3
Authority
WO
WIPO (PCT)
Prior art keywords
oil
present
fastener
bearing cap
seal
Prior art date
Application number
PCT/US2007/020640
Other languages
French (fr)
Other versions
WO2008042154A2 (en
Inventor
Edward Charles Mendler
Original Assignee
Edward Charles Mendler
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 Edward Charles Mendler filed Critical Edward Charles Mendler
Priority to GB0907293A priority Critical patent/GB2456941B/en
Priority to US12/311,561 priority patent/US20100006057A1/en
Publication of WO2008042154A2 publication Critical patent/WO2008042154A2/en
Publication of WO2008042154A3 publication Critical patent/WO2008042154A3/en

Links

Classifications

    • 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
    • F01M1/06—Lubricating systems characterised by the provision therein of crankshafts or connecting rods with lubricant passageways, e.g. bores
    • 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
    • F02B75/047—Engines with variable distances between pistons at top dead-centre positions and cylinder heads by means of variable crankshaft position

Landscapes

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

Abstract

According to the present invention, a variable compression ratio machine having main bearings mounted in an eccentric carrier or support includes an oil seal located primarily in a main bearing cap for minimizing leakage of pressurized main bearing oil. The seal is located generally in a first main bearing fastener socket or fastener access cutout in order to minimize structurally compromising the bearing cap, and a portion of the fastener socket preferably is used as an oil passageway as well as for wrench access to the fastener. The oil seal and oil circuit of the present invention enable the size of the eccentric support to be minimized while also providing highly effective oil sealing. In more detail, a significant advantage of the present invention is that highly effective oil sealing is attained without compromising the size or structural integrity of the bearing cap. A second significant advantage of the present invention is that it can be manufactured and assembled at low cost. The oil sealing system of the present invention is robust and highly reliable.
PCT/US2007/020640 2006-10-03 2007-09-25 Crankshadft with variable stroke and oil seal WO2008042154A2 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0907293A GB2456941B (en) 2006-10-03 2007-09-25 Oil Circuit
US12/311,561 US20100006057A1 (en) 2006-10-03 2007-09-25 Oil seal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US84931406P 2006-10-03 2006-10-03
US60/849,314 2006-10-03

Publications (2)

Publication Number Publication Date
WO2008042154A2 WO2008042154A2 (en) 2008-04-10
WO2008042154A3 true WO2008042154A3 (en) 2008-08-07

Family

ID=39268960

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/020640 WO2008042154A2 (en) 2006-10-03 2007-09-25 Crankshadft with variable stroke and oil seal

Country Status (3)

Country Link
US (1) US20100006057A1 (en)
GB (1) GB2456941B (en)
WO (1) WO2008042154A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5331588B2 (en) * 2009-06-19 2013-10-30 本田技研工業株式会社 Crankcase for internal combustion engine
US8851030B2 (en) * 2012-03-23 2014-10-07 Michael von Mayenburg Combustion engine with stepwise variable compression ratio (SVCR)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247430B1 (en) * 1997-10-31 2001-06-19 Fev Motorentechnik Gmbh & Co. Kommandgesellschaft Compression ratio setting device for an internal-combustion engine

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2897804A (en) * 1958-01-15 1959-08-04 Cooper Bessemer Corp Means to vary the compression ratio of an internal combustion engine during operation
US6443107B1 (en) * 1999-05-27 2002-09-03 Edward Charles Mendler Rigid crankshaft cradle and actuator
DE10051271B4 (en) * 2000-10-16 2015-07-16 Fev Gmbh In their compression ratio adjustable piston internal combustion engine with integrated Verstellaktuator
US6637348B1 (en) * 2002-07-02 2003-10-28 Siemens Sgp Verkehrstechnik Gmbh Level-adjustable main spring and actively biased emergency spring with fail-safe behavior
US7370613B2 (en) * 2004-11-30 2008-05-13 Caterpillar Inc. Eccentric crank variable compression ratio mechanism

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6247430B1 (en) * 1997-10-31 2001-06-19 Fev Motorentechnik Gmbh & Co. Kommandgesellschaft Compression ratio setting device for an internal-combustion engine

Also Published As

Publication number Publication date
GB2456941A (en) 2009-08-05
GB2456941B (en) 2011-07-06
GB0907293D0 (en) 2009-06-10
US20100006057A1 (en) 2010-01-14
WO2008042154A2 (en) 2008-04-10

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