EP 1399666 B1 20060830 - FUEL INJECTION DEVICE
Title (en)
FUEL INJECTION DEVICE
Title (de)
KRAFTSTOFFEINSPRITZEINRICHTUNG
Title (fr)
SYSTEME D'INJECTION DE CARBURANT
Publication
Application
Priority
- DE 0201551 W 20020427
- DE 10123910 A 20010517
- DE 10218635 A 20020425
Abstract (en)
[origin: WO02092997A1] A fuel injection device for internal combustion engines is disclosed, comprising a fuel injector supplied by a high pressure fuel source and a pressure amplification device. Said pressure amplification device comprises a moving pressure amplification piston, which separates a chamber which may be connected to the high pressure fuel source from a high pressure chamber connected to the fuel injector. The fuel pressure in the high pressure chamber may be varied by either filling a return chamber on the pressure amplification device with fuel or emptying the return chamber of fuel. The fuel injector comprises a moving closing piston, for opening and closing injection openings, which extends into a sealing pressure chamber (12; 112) so as to pressurise the sealing piston with fuel pressure, generating a force acting in the closing direction on the closing piston. The closing pressure chamber (12; 112) and the chamber (26; 126) are formed by a common working chamber, whereby all the partial regions (12, 47, 26; 112, 130, 126) of the working chamber are permanently connected to each other (47; 130) for the exchange of fuel.
IPC 8 full level
F02M 57/02 (2006.01); F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 51/06 (2006.01); F02M 59/10 (2006.01); F02M 59/46 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 47/02 (2013.01 - EP US); F02M 47/027 (2013.01 - EP US); F02M 57/025 (2013.01 - EP US); F02M 59/105 (2013.01 - EP US); F02M 59/468 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
WO 02092997 A1 20021121; DE 50208012 D1 20061012; EP 1399666 A1 20040324; EP 1399666 B1 20060830; JP 2004519613 A 20040702; JP 4125963 B2 20080730; US 2004035397 A1 20040226; US 6805101 B2 20041019
DOCDB simple family (application)
DE 0201551 W 20020427; DE 50208012 T 20020427; EP 02740296 A 20020427; JP 2002590238 A 20020427; US 33307403 A 20030905