EP 0931215 B1 20030129 - FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
Title (en)
FUEL INJECTION DEVICE FOR INTERNAL COMBUSTION ENGINES
Title (de)
KRAFTSTOFFEINSPRITZVORRICHTUNG FÜR BRENNKRAFTMASCHINEN
Title (fr)
DISPOSITIF D'INJECTION DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE
Publication
Application
Priority
- DE 9800944 W 19980403
- DE 19732802 A 19970730
Abstract (en)
[origin: DE19732802A1] The invention concerns a fuel injection device for internal combustion engines, wherein the displacement of a member closing the fuel injection valve is controlled by pressure prevailing in a control chamber (25). The pressure prevailing in said chamber is further controlled by a pilot valve (31) whereof the closure member can be actuated by a piezoelectric drive (65), the movement being transmitted via a hydraulic chamber. Said closure member comprises two sealing surfaces (37, 39) which co-operate with valve seats (36, 40), and when it passes from one valve seat to the other, a brief discharge occurs in the control chamber (25), to control a brief fuel injection. In order to obtain larger amounts of injected fuel, the pilot valve can be put in open or closed position.
IPC 1-7
IPC 8 full level
F02M 45/04 (2006.01); F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 59/46 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP KR US)
F02M 45/04 (2013.01 - EP US); F02M 47/02 (2013.01 - KR); F02M 47/027 (2013.01 - EP US); F02M 63/0026 (2013.01 - EP US); F02M 2200/703 (2013.01 - EP US); F02M 2200/704 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB IT
DOCDB simple family (publication)
DE 19732802 A1 19990204; CN 1095033 C 20021127; CN 1236417 A 19991124; DE 59807062 D1 20030306; EP 0931215 A1 19990728; EP 0931215 B1 20030129; JP 2001501272 A 20010130; KR 20000068640 A 20001125; RU 2193102 C2 20021120; US 6021760 A 20000208; WO 9906690 A1 19990211
DOCDB simple family (application)
DE 19732802 A 19970730; CN 98801083 A 19980403; DE 59807062 T 19980403; DE 9800944 W 19980403; EP 98928123 A 19980403; JP 51033299 A 19980403; KR 19997002608 A 19990326; RU 99108727 A 19980403; US 26966699 A 19990430