EP 1476655 A1 20041117 - FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
Title (en)
FUEL INJECTION SYSTEM FOR AN INTERNAL COMBUSTION ENGINE
Title (de)
KRAFTSTOFFEINSPRITZEINRICHTUNG FÜR EINE BRENNKRAFTMASCHINE
Title (fr)
SYSTEME D'INJECTION DE CARBURANT POUR UN MOTEUR A COMBUSTION INTERNE
Publication
Application
Priority
- DE 0204480 W 20021206
- DE 10205750 A 20020212
Abstract (en)
[origin: WO03069154A1] The invention relates to a fuel injection system comprising a high pressure fuel pump (10) and a fuel injection valve (12) connected to said pump, for each cylinder of the internal combustion engine. A pump piston (18) of the high pressure fuel pump (10) defines a pump working area (22) which is connected to a pressure chamber (40) of the fuel injection valve (12). Said fuel injection valve comprises an injection valve element (28) which is used to control injection openings (32) and can be displaced against a closing force in an opening direction by means of the pressure in the pressure chamber (40). A connection (66) between the pump working area (22) and a discharge chamber (24) is controlled by a first control valve (68), and a connection (64) between a control pressure chamber (52) associated with the pump working area (22) and a discharge chamber (24) is controlled by a second control valve (70). A throttle point (63, 65) is respectively provided in connections (62, 64) between the control pressure chamber (52) and the pump working area (22) and between the control pressure chamber and the discharge chamber (24). Another pressure chamber (54) is connected to the pump working area (22) and is defined by a pressure surface (53) by which means another force is exerted on the injection valve element (28) in the closing direction.
IPC 1-7
IPC 8 full level
F02M 45/04 (2006.01); F02M 45/08 (2006.01); F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 55/02 (2006.01); F02M 57/02 (2006.01); F02M 59/10 (2006.01); F02M 59/34 (2006.01); F02M 59/44 (2006.01)
CPC (source: EP US)
F02M 45/04 (2013.01 - EP US); F02M 45/08 (2013.01 - EP US); F02M 47/027 (2013.01 - EP US); F02M 57/02 (2013.01 - EP US)
Citation (search report)
See references of WO 03069154A1
Designated contracting state (EPC)
DE ES FR GB IT SE
DOCDB simple family (publication)
WO 03069154 A1 20030821; DE 10205750 A1 20030821; DE 50203434 D1 20050721; EP 1476655 A1 20041117; EP 1476655 B1 20050615; JP 2005517859 A 20050616; US 2004144365 A1 20040729; US 7025284 B2 20060411
DOCDB simple family (application)
DE 0204480 W 20021206; DE 10205750 A 20020212; DE 50203434 T 20021206; EP 02792635 A 20021206; JP 2003568246 A 20021206; US 47475404 A 20040315