EP 1656498 B1 20081126 - FUEL INJECTION VALVE CONTROLLED BY A PILOT VALVE
Title (en)
FUEL INJECTION VALVE CONTROLLED BY A PILOT VALVE
Title (de)
PILOTVENTIL GESTEUERTES BRENNSTOFFEINSPRITZVENTIL
Title (fr)
SOUPAPE D'INJECTION DE CARBURANT COMMANDEE PAR UNE SOUPAPE PILOTE
Publication
Application
Priority
- CH 2004000478 W 20040730
- CH 14422003 A 20030822
Abstract (en)
[origin: WO2005019637A1] The hydraulic control device (20) of the fuel injection valve (10) comprises a pilot valve (70). The pilot valve rod (66) co-operates with both the actuator (18) and the pilot valve seat (68). A discharge chamber (72) is located adjacent to the pilot valve seat (68) and is connected to the low-pressure outlet (76) by means of a throttle passage (74). In order to complete the injection process, the pilot valve rod (66) is inserted into the discharge chamber (72) until it hits the pilot valve seat (68). This leads to an increase in pressure which, in turn, leads to the control body (38) being rapidly lifted from its position on the discharge chamber body (46). The injection valve member (22) is thereby displaced very rapidly into the closing position thereof in order to complete the injection process. The movement of the pilot valve rod (66) can also be mechanically used to support the rapid closing movement of the injection valve member (22).
IPC 8 full level
F02M 47/02 (2006.01); F02M 45/08 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP)
F02M 45/08 (2013.01); F02M 47/025 (2013.01); F02M 47/027 (2013.01); F02M 63/0026 (2013.01)
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
DOCDB simple family (publication)
WO 2005019637 A1 20050303; AT E415554 T1 20081215; DE 502004008540 D1 20090108; EP 1656498 A1 20060517; EP 1656498 B1 20081126
DOCDB simple family (application)
CH 2004000478 W 20040730; AT 04738118 T 20040730; DE 502004008540 T 20040730; EP 04738118 A 20040730