EP 1651861 A1 20060503 - CONTROL VALVE WITH PRESSURE COMPENSATION FOR A FUEL INJECTOR COMPRISING A PRESSURE INTENSIFIER
Title (en)
CONTROL VALVE WITH PRESSURE COMPENSATION FOR A FUEL INJECTOR COMPRISING A PRESSURE INTENSIFIER
Title (de)
SCHALTVENTIL MIT DRUCKAUSGLEICH FÜR EINEN KRAFTSTOFFINJEKTOR MIT DRUCKVERSTÄRKER
Title (fr)
SOUPAPE DE COMMANDE A COMPENSATION DE PRESSION POUR UN INJECTEUR DE CARBURANT COMPRENANT UN MULTIPLICATEUR DE PRESSION
Publication
Application
Priority
- DE 2004001254 W 20040617
- DE 10334771 A 20030730
Abstract (en)
[origin: WO2005015000A1] The invention relates to a fuel injector comprising a pressure intensifier (3) that is supplied with high-pressure fuel from a pressure source (1). A working chamber (4) of the pressure intensifier (3) is separated from a differential pressure chamber (6) of the pressure intensifier (3) by means of a pressure relay piston (5). The differential pressure chamber (6) of the pressure intensifier (3) is relieved of pressure and subjected to pressure by means of a control valve (22). Said control valve is connected to the differential pressure chamber (6) by means of a control line (10). A pressure chamber (12) on an injection valve element (13) is connected to a compression chamber (8) of the pressure intensifier (3) by means of a pressure chamber supply line (11). The control valve (22) is embodied as a directly switching 3/2 distributing valve, the valve needle (23, 31) thereof being pressure-compensated and comprising both a sealing seat (24) and a slide seal (25).
IPC 1-7
IPC 8 full level
F02M 57/02 (2006.01); F02M 59/36 (2006.01); F02M 59/46 (2006.01); F02M 61/20 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP US)
F02M 57/025 (2013.01 - EP US); F02M 59/366 (2013.01 - EP US); F02M 63/0015 (2013.01 - EP US); F02M 63/0031 (2013.01 - EP US); F02M 63/0045 (2013.01 - EP US); F02M 63/0073 (2013.01 - EP US); F02M 63/0078 (2013.01 - EP US)
Citation (search report)
See references of WO 2005015000A1
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
DE 10334771 A1 20050224; DE 502004011616 D1 20101014; EP 1651861 A1 20060503; EP 1651861 B1 20100901; JP 2006514217 A 20060427; JP 4113223 B2 20080709; US 2006202139 A1 20060914; US 7316361 B2 20080108; WO 2005015000 A1 20050217
DOCDB simple family (application)
DE 10334771 A 20030730; DE 2004001254 W 20040617; DE 502004011616 T 20040617; EP 04738705 A 20040617; JP 2005518186 A 20040617; US 56624504 A 20040617