EP1995418A4 - Breather device of crankcase for 4-cycle engine - Google Patents

Breather device of crankcase for 4-cycle engine

Info

Publication number
EP1995418A4
EP1995418A4 EP07702208A EP07702208A EP1995418A4 EP 1995418 A4 EP1995418 A4 EP 1995418A4 EP 07702208 A EP07702208 A EP 07702208A EP 07702208 A EP07702208 A EP 07702208A EP 1995418 A4 EP1995418 A4 EP 1995418A4
Authority
EP
European Patent Office
Prior art keywords
cylinder head
oil
communicated
crankcase
way valve
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.)
Granted
Application number
EP07702208A
Other languages
German (de)
French (fr)
Other versions
EP1995418A1 (en
EP1995418B1 (en
Inventor
Henglin Xiao
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.)
Wuxi Kipor Power Co Ltd
Original Assignee
Wuxi Kipor Power Co Ltd
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 Wuxi Kipor Power Co Ltd filed Critical Wuxi Kipor Power Co Ltd
Publication of EP1995418A1 publication Critical patent/EP1995418A1/en
Publication of EP1995418A4 publication Critical patent/EP1995418A4/en
Application granted granted Critical
Publication of EP1995418B1 publication Critical patent/EP1995418B1/en
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M13/0416—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil arranged in valve-covers
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0461—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a labyrinth
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0488—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with oil trap in the return conduit to the crankcase

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)

Abstract

A crankcase scavenging mechanism for a four-stroke engine is disclosed. A valve operating chamber (5) is assembled from a cylinder head and a cylinder head cover (3) and is communicated with a crankcase (6). The cylinder head cover (3) is arranged on the top of the cylinder head (9) and is provided with a gas-oil separating cavity (23) on the top thereof. A passage (37) is communicated with the valve operating chamber (5). The gas-oil separating cavity (23) is connected with a partition plate (25) to form an oil-gas separation chamber (26). The oil-gas separation chamber (26) is provided with a one-way valve (27) thereon. The one-way valve (27) is installed in a one-way valve hole (28). A passage (33) above the one-way valve (27) is provided with an inclined orifice (38), one end of which is blocked by a plug (39), the other end of which is communicated with the cylinder head (9) and is further communicated with a suction tube (14) through a cylinder head communication passage (41). An oil-returning hole (34) is formed between the inclined orifice (38) of the passage (33) and the oil-gas separation chamber (26).
EP07702208A 2006-03-08 2007-01-25 Breather device of crankcase for 4-cycle engine Not-in-force EP1995418B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CNB2006100386981A CN100383365C (en) 2006-03-08 2006-03-08 Air-exchanging structure of crank case of four-stroke engine
PCT/CN2007/000290 WO2007101387A1 (en) 2006-03-08 2007-01-25 Breather device of crankcase for 4-cycle engine

Publications (3)

Publication Number Publication Date
EP1995418A1 EP1995418A1 (en) 2008-11-26
EP1995418A4 true EP1995418A4 (en) 2011-01-05
EP1995418B1 EP1995418B1 (en) 2012-04-25

Family

ID=36918522

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07702208A Not-in-force EP1995418B1 (en) 2006-03-08 2007-01-25 Breather device of crankcase for 4-cycle engine

Country Status (8)

Country Link
US (1) US20090084342A1 (en)
EP (1) EP1995418B1 (en)
CN (1) CN100383365C (en)
AT (1) ATE555277T1 (en)
AU (1) AU2007222812B2 (en)
ES (1) ES2386019T3 (en)
TR (1) TR200806687T1 (en)
WO (1) WO2007101387A1 (en)

Families Citing this family (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE0602508L (en) * 2006-11-27 2007-08-28 Atlas Copco Constr Tools Ab Two-stroke internal combustion engine
CN101280704B (en) * 2008-05-06 2013-07-31 孙鹤鸣 Arbitrary overturn four-stroke cycle engine
JP5463111B2 (en) * 2009-09-24 2014-04-09 株式会社マキタ Lubricating device for portable 4-cycle engine
CN101943078A (en) * 2010-08-24 2011-01-12 重庆长安汽车股份有限公司 Cylinder head of internal combustion engine
CN102192041B (en) * 2010-12-31 2016-08-17 宁波易能动力科技有限公司 Handheld tool quartastroke engine
JP2013104357A (en) * 2011-11-14 2013-05-30 Makita Corp Lubrication apparatus for four-stroke engine
EP2937533B1 (en) * 2014-04-24 2017-12-20 BRUSS Sealing Systems GmbH Ventilation module for a combustion engine
CN104500176A (en) * 2014-12-29 2015-04-08 无锡华源凯马发动机有限公司 Breather structure of cylinder cover hood of single-cylinder air-cooled diesel engine
CN104791048A (en) * 2015-03-17 2015-07-22 浙江亚特电器有限公司 Residual gas utilization device for engine lubricating system
CN109763875A (en) * 2019-01-04 2019-05-17 山东华盛农业药械有限责任公司 The gas and oil separating plant of gasoline engine lubricating system
CN114542239A (en) * 2022-03-09 2022-05-27 广西玉柴机器股份有限公司 Engine with respirator low in engine oil content

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341770A2 (en) * 1988-05-13 1989-11-15 LOMBARDINI Fabbrica Italiana Motori S.p.A. An internal combustion engine valve rocker compartment cover, with a lubricating oil anti-sucking device

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60192821A (en) * 1984-03-15 1985-10-01 Honda Motor Co Ltd Crank case ventilation device for internal-combustion engine
US5183075A (en) * 1986-04-12 1993-02-02 Stein Guenter Check valve
US5129371A (en) * 1991-09-03 1992-07-14 Saturn Corporation Cam cover oil separator for crankcase ventilation
US5829952A (en) * 1995-05-19 1998-11-03 Shadden; Darrel W. Check valve with a reversible valve ball and seat
JP3143777B2 (en) * 1996-03-19 2001-03-07 本田技研工業株式会社 Work four-stroke engine
JP3866394B2 (en) * 1997-10-22 2007-01-10 本田技研工業株式会社 Engine breather equipment
US6412478B1 (en) * 2001-01-02 2002-07-02 Generac Power Systems, Inc. Breather for internal combustion engine
JP3967552B2 (en) * 2001-02-19 2007-08-29 本田技研工業株式会社 Gas-liquid separator for engines
CN2499581Y (en) * 2001-10-12 2002-07-10 常柴股份有限公司 Aspirator of diesel engine gear room
JP4344579B2 (en) * 2003-10-15 2009-10-14 株式会社マーレ フィルターシステムズ Cylinder head cover oil separator
JP2005201080A (en) * 2004-01-13 2005-07-28 Toyota Industries Corp Cylinder head cover
CN2727405Y (en) * 2004-09-15 2005-09-21 重庆宗申技术开发研究有限公司 Breathing device for internal combustion engine
ATE531954T1 (en) * 2005-05-20 2011-11-15 Yamaha Motor Co Ltd CONNECTING ROD WITH A SPLIT CONNECTING ROD HEAD
US7789077B2 (en) * 2006-04-11 2010-09-07 Honda Motor Co., Ltd. Crankcase of internal combustion engine
US7699029B2 (en) * 2007-07-26 2010-04-20 Cummins Filtration Ip, Inc. Crankcase ventilation system with pumped scavenged oil

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0341770A2 (en) * 1988-05-13 1989-11-15 LOMBARDINI Fabbrica Italiana Motori S.p.A. An internal combustion engine valve rocker compartment cover, with a lubricating oil anti-sucking device

Also Published As

Publication number Publication date
ES2386019T3 (en) 2012-08-07
ATE555277T1 (en) 2012-05-15
US20090084342A1 (en) 2009-04-02
WO2007101387A1 (en) 2007-09-13
TR200806687T1 (en) 2009-01-21
AU2007222812A1 (en) 2007-09-13
CN100383365C (en) 2008-04-23
EP1995418A1 (en) 2008-11-26
CN1818355A (en) 2006-08-16
EP1995418B1 (en) 2012-04-25
AU2007222812B2 (en) 2011-06-30

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