EP 0035290 B2 19890621 - LIQUID-COOLED PISTON FOR INTERNAL-COMBUSTION ENGINES
Title (en)
LIQUID-COOLED PISTON FOR INTERNAL-COMBUSTION ENGINES
Publication
Application
Priority
DE 3008330 A 19800305
Abstract (en)
[origin: US4368697A] In a composite, liquid-cooled piston, the upper part consists of ferrous material and is joined by conventional means to the lower part. A ring is provided on the underside of the upper part which bears on the corresponding surface of the lower part and constitutes a radially inner boundary of a cooling passage which is disposed on the upper part and open to the interfacial plane. To improve the cooling action in the hottest regions of the upper part and to achieve a more uniform distribution of temperature in the ring carrying over of the upper part of piston, the upper portion of the wall defining the cooling passage is coated with a material having a high thermal conductivity.
IPC 1-7
IPC 8 full level
F02F 3/00 (2006.01); F02F 3/10 (2006.01); F02F 3/22 (2006.01); F16J 1/00 (2006.01); F02B 3/06 (2006.01)
CPC (source: EP US)
F02F 3/0076 (2013.01 - EP US); F02F 3/10 (2013.01 - EP US); F02F 3/22 (2013.01 - EP US); F02B 3/06 (2013.01 - EP US); F02F 2003/0061 (2013.01 - EP US); F02F 2200/04 (2013.01 - EP US); F05C 2201/021 (2013.01 - EP US); F05C 2201/0448 (2013.01 - EP US); F05C 2251/048 (2013.01 - EP US); F05C 2253/12 (2013.01 - EP US)
Designated contracting state (EPC)
CH DE FR GB IT LI NL
DOCDB simple family (publication)
EP 0035290 A1 19810909; EP 0035290 B1 19840104; EP 0035290 B2 19890621; DE 3008330 A1 19810917; DE 3161813 D1 19840209; JP S56138445 A 19811029; US 4368697 A 19830118
DOCDB simple family (application)
EP 81200115 A 19810130; DE 3008330 A 19800305; DE 3161813 T 19810130; JP 3106181 A 19810304; US 24044981 A 19810304