EP 1430219 A1 20040623 - FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Title (en)

FUEL INJECTION DEVICE FOR AN INTERNAL COMBUSTION ENGINE

Title (de)

KRAFTSTOFFEINSPRITZEINRICHTUNG FÜR EINE BRENNKRAFTMASCHINE

Title (fr)

SYSTEME D'INJECTION DE CARBURANT POUR MOTEUR A COMBUSTION INTERNE

Publication

EP 1430219 A1 20040623 (DE)

Application

EP 02764516 A 20020713

Priority

DE 0202575 W 20020713
DE 10146745 A 20010922

Abstract (en)

[origin: WO03027490A1] The fuel injection device comprises a fuel injection valve (12) with an injection valve member (34), by means of which at least one injection opening (36) is controlled. The injection valve member (34) is pressurised by the pressure in a pressure chamber (44) in the fuel injection valve (12) and may be displaced by the same against a closing spring (48) arranged in a spring chamber (50). The pressure chamber is supplied with fuel under high pressure by a high pressure fuel pump (10) for an injection of fuel. The injection valve member (34) is at least indirectly pressurised in the closing direction by the pressure in the spring chamber (50) of the fuel injection valve (12). The pressure in the spring chamber (50) is variable, whereby the spring chamber (50) comprises a connection to a pressure source (66), which may be controlled by means of an electric valve (67). Different opening pressures for the fuel injection valve (12) can thus be achieved for a pre-injection and a main injection of fuel.

IPC 1-7

F02M 61/20; F02M 45/08; F02M 45/12; F02M 57/02; F02M 63/00; F02M 59/36

IPC 8 full level

F02M 45/08 (2006.01); F02M 45/12 (2006.01); F02M 57/02 (2006.01); F02M 59/36 (2006.01); F02M 61/20 (2006.01); F02M 63/00 (2006.01)

CPC (source: EP US)

F02M 45/08 (2013.01 - EP US); F02M 45/12 (2013.01 - EP US); F02M 57/02 (2013.01 - EP US); F02M 59/366 (2013.01 - EP US); F02M 61/205 (2013.01 - EP US); F02M 63/0003 (2013.01 - EP US)

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR IE IT LI LU MC NL PT SE SK TR

DOCDB simple family (publication)

WO 03027490 A1 20030403; DE 10146745 A1 20030410; EP 1430219 A1 20040623; HU P0301409 A2 20071128; JP 2005504220 A 20050210; PL 370718 A1 20050530; US 2004069276 A1 20040415; US 6912990 B2 20050705

DOCDB simple family (application)

DE 0202575 W 20020713; DE 10146745 A 20010922; EP 02764516 A 20020713; HU P0301409 A 20020713; JP 2003531025 A 20020713; PL 37071802 A 20020713; US 43238203 A 20031119