EP 0356641 B1 19921007 - COOLING SYSTEM FOR THE VALVE SEATS IN THE CYLINDER HEAD OF AN INTERNAL-COMBUSTION ENGINE
Title (en)
COOLING SYSTEM FOR THE VALVE SEATS IN THE CYLINDER HEAD OF AN INTERNAL-COMBUSTION ENGINE
Publication
Application
Priority
DE 3829339 A 19880830
Abstract (en)
[origin: JPH02104908A] PURPOSE: To effectively use an existing lubricating oil circulating path to realize maximum heat transmission and uniform cooling by, in an annular passage surrounding a valve seat ring, making a supply duct and a discharge duct approach to each other to form an opening. CONSTITUTION: In a cylinder head 1, a valve seat ring 5 is arranged in each air exhaust passage 4, and the valve seat ring 5 is surrounded by an annular passage 6. Further, the annular passage 6 comprises a supply duct 7 and a discharge duct 8, which approach to each other to hold a projection 16 and are bored in openings 9 and 10. Therefore, lubricating oil supplied from the supply duct 7 is exhausted from the discharge duct 8 after the lubricating oil circulates in the annular passage 6. As a consequence, the valve seat ring 5 can be uniformly cooled by the lubrication oil as a coolant.
IPC 1-7
IPC 8 full level
F01L 3/12 (2006.01); F01L 3/22 (2006.01); F01M 9/10 (2006.01); F01P 3/14 (2006.01); F01P 9/00 (2006.01); F01P 9/04 (2006.01); F02F 1/40 (2006.01); F02B 3/06 (2006.01); F02F 1/24 (2006.01)
CPC (source: EP US)
F01L 3/22 (2013.01 - EP US); F01M 9/10 (2013.01 - EP US); F01P 3/14 (2013.01 - EP US); F01P 9/00 (2013.01 - EP US); F01M 9/101 (2013.01 - EP US); F02B 3/06 (2013.01 - EP US); F02F 2001/245 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 3829339 C1 19891214; DE 58902410 D1 19921112; EP 0356641 A2 19900307; EP 0356641 A3 19900523; EP 0356641 B1 19921007; JP H02104908 A 19900417; US 4941436 A 19900717
DOCDB simple family (application)
DE 3829339 A 19880830; DE 58902410 T 19890619; EP 89111053 A 19890619; JP 21877089 A 19890828; US 40068189 A 19890830