Global Patent Index - EP 1995418 A4

EP 1995418 A4 20110105 - BREATHER DEVICE OF CRANKCASE FOR 4-CYCLE ENGINE

Title (en)

BREATHER DEVICE OF CRANKCASE FOR 4-CYCLE ENGINE

Title (de)

ENTLÜFTERVORRICHTUNG FÜR DAS KURBELGEHÄUSE EINES VIERTAKTMOTORS

Title (fr)

VENTILATEUR DE CARTER POUR MOTEUR À 4 TEMPS

Publication

EP 1995418 A4 20110105 (EN)

Application

EP 07702208 A 20070125

Priority

  • CN 2007000290 W 20070125
  • CN 200610038698 A 20060308

Abstract (en)

[origin: EP1995418A1] 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).

IPC 8 full level

F01M 13/04 (2006.01); F01M 13/00 (2006.01); F02F 7/00 (2006.01)

CPC (source: EP)

F01M 13/0416 (2013.01); F01M 2013/0461 (2013.01); F01M 2013/0488 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC NL PL PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1995418 A1 20081126; EP 1995418 A4 20110105; EP 1995418 B1 20120425; AT 555277 T 20120515; AU 2007222812 A1 20070913; AU 2007222812 B2 20110630; CN 100383365 C 20080423; CN 1818355 A 20060816; ES 2386019 T3 20120807; TR 200806687 T1 20090121; US 2009084342 A1 20090402; WO 2007101387 A1 20070913

DOCDB simple family (application)

EP 07702208 A 20070125; AT 07702208 T 20070125; AU 2007222812 A 20070125; CN 200610038698 A 20060308; CN 2007000290 W 20070125; ES 07702208 T 20070125; TR 200806687 T 20070125; US 28180007 A 20070125