EP 1920152 B1 20141210 - TWO-PIECE PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
TWO-PIECE PISTON FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
ZWEITEILIGER KOLBEN FÜR EINEN VERBRENNUNGSMOTOR
Title (fr)
PISTON EN DEUX PARTIES POUR MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 2006001527 W 20060831
- DE 102005041409 A 20050901
Abstract (en)
[origin: WO2007025529A1] A two-piece piston (1) is disclosed for an internal combustion engine, comprising an upper piece (2) and a lower piece (3), the lower piece (3) having an upper base part (25) with an opening (27) lying coaxial to the piston axis (12) into which a pin (31) formed on the upper piece (2) is inserted and by means of which the upper piece (2) is connected to the lower piece (3) with a hexagonal nut (29) screwed onto the pin (31). A resilient sleeve (26) is arranged between the upper piece and the lower piece comprising an inwardly directed collar (28) on the side thereof facing the piston crown against which the upper face (23) of the hexagonal nut (29) lies and in the region thereof facing away from the piston crown, a contact surface (19) facing the piston crown lying on a surface (21) on the inner side of the opening (27). An economically produced two-piece piston results with a resilient sleeve between both screwed piston pieces which exerts a pre-tensioning on the screw connection and thus provides security for said screw connection.
IPC 8 full level
F02F 3/00 (2006.01)
CPC (source: EP KR US)
F02F 3/00 (2013.01 - KR); F02F 3/0023 (2013.01 - EP US)
Citation (examination)
Designated contracting state (EPC)
DE FI FR GB IT
DOCDB simple family (publication)
DE 102005041409 A1 20070308; CN 101253322 A 20080827; CN 101253322 B 20120606; EP 1920152 A1 20080514; EP 1920152 B1 20141210; JP 2009507158 A 20090219; JP 5150495 B2 20130220; KR 101285985 B1 20130715; KR 20080043313 A 20080516; US 2009260593 A1 20091022; US 2011226211 A1 20110922; US 7946268 B2 20110524; US 8651084 B2 20140218; WO 2007025529 A1 20070308
DOCDB simple family (application)
DE 102005041409 A 20050901; CN 200680032157 A 20060831; DE 2006001527 W 20060831; EP 06791334 A 20060831; JP 2008528334 A 20060831; KR 20087004263 A 20060831; US 201113066880 A 20110427; US 99123806 A 20060831