EP 1778964 B1 20160309 - LIGHTWEIGHT PISTON COMPRISING HEAT PIPES
Title (en)
LIGHTWEIGHT PISTON COMPRISING HEAT PIPES
Title (de)
LEICHTMETALLKOLBEN MIT WÄRMEROHREN
Title (fr)
PISTONS EN METAL LEGER AYANT DES TUBES ECHANGEURS DE CHALEUR
Publication
Application
Priority
- DE 2005001410 W 20050810
- DE 102004038945 A 20040811
Abstract (en)
[origin: WO2006015584A1] The invention relates to a lightweight piston (10) comprising heat pipes. The aim of the invention is to simplify the structure of such a piston while at the same time allowing for an improved heat dissipation from the piston areas subject to heat load while avoiding thermal stress. For this purpose, a plurality of liquid-filled heat pipes (6) each having an evaporator (6a) and a condenser end (6b) is used, whereby the evaporator end is configured by short pipe sections that are oriented in the thickness at bottom towards the piston head and towards the focal point and that are interlinked by means of a composite heat pipe (7) extending in parallel to the piston head. At least two pipe sections functioning as the condenser end (6b) are coupled with the composite heat pipe (7) in such a manner as to configure, by way of a pipe connection (8) arranged on the condenser ends (7a), a closed coolant cycle between the evaporator end, composite heat pipe and condenser end of the heat pipes (6).
IPC 8 full level
F02F 3/18 (2006.01)
CPC (source: EP KR US)
F02F 3/18 (2013.01 - EP KR US); F02F 3/20 (2013.01 - KR); F02F 3/22 (2013.01 - KR)
Citation (examination)
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
DE 102004038945 A1 20060223; BR PI0513462 A 20080506; CN 101002013 A 20070718; CN 101002013 B 20100414; EP 1778964 A1 20070502; EP 1778964 B1 20160309; JP 2008509337 A 20080327; JP 5096146 B2 20121212; KR 101279844 B1 20130705; KR 20070049202 A 20070510; US 2008078288 A1 20080403; US 7549368 B2 20090623; WO 2006015584 A1 20060216
DOCDB simple family (application)
DE 102004038945 A 20040811; BR PI0513462 A 20050810; CN 200580027444 A 20050810; DE 2005001410 W 20050810; EP 05774022 A 20050810; JP 2007525162 A 20050810; KR 20077005441 A 20050810; US 65998505 A 20050810