Global Patent Index - EP 0657642 B1

EP 0657642 B1 19990113 - Fuel injection device for internal combustion engines

Title (en)

Fuel injection device for internal combustion engines

Title (de)

Kraftstoffeinspritzeinrichtung für Brennkraftmaschinen

Title (fr)

Dispositif d'injection de combustible pour moteurs à combustion interne

Publication

EP 0657642 B1 (DE)

Application

EP 94113010 A

Priority

DE 4341543 A

Abstract (en)

[origin: EP0657642A2] Fuel injection device for internal combustion engines with a high pressure accumulator (9), fillable by a high pressure fuel pump (1), from which accumulator high pressure lines (13) lead off to the individual injection valves (15). At the same time control valves (17) are inserted in the individual high pressure lines (13) in order to control the high pressure injection to the injection valves (15), together with an additional pressure reservoir (19) between the said control valves (17) and the high pressure accumulator (9). In order at the same time to prevent the high system pressure being constantly applied to the injection valves (15), the control valve (17) is designed so that, during the injection pauses on the injection valve (15) it closes its connection to the pressure reservoir (19) and opens a connection between injection valve (15) and a relief chamber (75). <IMAGE>

IPC 1-7

F02M 63/00; F02M 45/12; F02M 59/46

IPC 8 full level

F02M 47/00 (2006.01); F02M 45/12 (2006.01); F02M 47/02 (2006.01); F02M 59/46 (2006.01); F02M 63/00 (2006.01); F02B 3/06 (2006.01)

CPC (source: EP)

F02M 63/0007 (2013.01); F02B 3/06 (2013.01)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

DE 4341543 A1 19950608; DE 59407645 D1 19990225; EP 0657642 A2 19950614; EP 0657642 A3 19951206; EP 0657642 B1 19990113; JP 3655938 B2 20050602; JP H07189849 A 19950728; US 5497750 A 19960312

DOCDB simple family (application)

DE 4341543 A 19931207; DE 59407645 T 19940820; EP 94113010 A 19940820; JP 30395094 A 19941207; US 33968894 A 19941114