EP 1404964 A2 20040407 - FUEL INJECTOR WITH A SWITCHABLE CONTROL CHAMBER FEED
Title (en)
FUEL INJECTOR WITH A SWITCHABLE CONTROL CHAMBER FEED
Title (de)
KRAFTSTOFFINJEKTOR MIT ZUSCHALTBAREM STEUERRAUMZULAUF
Title (fr)
INJECTEUR DE CARBURANT A AMENEE DE CHAMBRE DE COMMANDE COMMUTABLE
Publication
Application
Priority
- DE 0202292 W 20020621
- DE 10131618 A 20010629
Abstract (en)
[origin: WO03004860A2] The invention relates to a fuel injector for direct injection internal combustion engines. The fuel injector comprises an injector body (1) containing a control chamber (2).A nozzle needle/ tappet arrangement (6) in the injector body can be actuated by impinging/reducing pressure in the control chamber (2). The pressure in the control chamber (2) can be reduced via a flow channel (10), using a throttle element (13), said control chamber (2) being connected to a high pressure source by means of a permanently active pressure-side feed (28) and a second throttle element (26). A switch valve (16) is accommodated in the body (1) of the fuel injector, said valve being to connected to the control chamber (2) via the flow channel (10). In order to build up pressure in the control chamber (2), said switch valve (16) is used for parallel connection of another high-pressure side feed (29) to a third throttle element (27) in the permanently active feed (28) to the control chamber (2).
IPC 1-7
IPC 8 full level
F02M 47/02 (2006.01); F02M 59/46 (2006.01); F02M 63/00 (2006.01)
CPC (source: EP)
F02M 47/027 (2013.01); F02M 63/004 (2013.01); F02M 63/0045 (2013.01); F02M 63/0068 (2013.01); F02M 2200/21 (2013.01); F02M 2200/28 (2013.01)
Citation (search report)
See references of WO 03004860A2
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE TR
DOCDB simple family (publication)
WO 03004860 A2 20030116; WO 03004860 A3 20030417; DE 10131618 A1 20030123; DE 50211686 D1 20080327; EP 1404964 A2 20040407; EP 1404964 B1 20080213
DOCDB simple family (application)
DE 0202292 W 20020621; DE 10131618 A 20010629; DE 50211686 T 20020621; EP 02758062 A 20020621