Global Patent Index - EP 0977942 A1

EP 0977942 A1 2000-02-09 - FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES

Title (en)

FUEL INJECTION VALVE FOR INTERNAL COMBUSTION ENGINES

Title (de)

KRAFTSTOFFEINSPRITZVENTIL FÜR BRENNKRAFTMASCHINEN

Title (fr)

SOUPAPE D'INJECTION DE CARBURANT POUR MOTEURS A COMBUSTION INTERNE

Publication

EP 0977942 A1 (DE)

Application

EP 98936193 A

Priority

  • DE 9801649 W
  • DE 19752496 A

Abstract (en)

[origin: DE19752496A1] The invention relates to a fuel injection valve for internal combustion engines, comprising a valve member (11) that can be displaced in the axial direction in a valve body (1). Said valve member cooperates with a valve seat surface (15) on the valve body (1) and with a tight surface (13) to control an injection orifice (17). The end of said member facing away from the combustion chamber is impinged upon by a valve spring (31) arranged in a spring chamber (29) in the closed position. The valve member (11) has a pressure shoulder (21) working in the opened direction, which projects into a pressure chamber (19) that can be filled with high pressure fuel. The spring chamber (19) is connected to the pressure chamber (19) through a choke gap and is closed in relation to a fuel return system so that the spring chamber (29) acts as a hydraulic damper when the valve member (11) lifts to the opened position.

IPC 1-7 (main, further and additional classification)

F02M 45/12; F02M 61/20

IPC 8 full level (invention and additional information)

F02M 61/10 (2006.01); F02M 45/08 (2006.01); F02M 45/12 (2006.01); F02M 61/20 (2006.01); F02M 63/00 (2006.01)

CPC (invention and additional information)

F02M 45/12 (2013.01); F02M 61/205 (2013.01); F02M 2200/304 (2013.01)

Citation (search report)

See references of WO 9928616A1

Designated contracting state (EPC)

DE FR GB

EPO simple patent family

DE 19752496 A1 19990602; EP 0977942 A1 20000209; JP 2001509858 A 20010724; US 6269795 B1 20010807; WO 9928616 A1 19990610

INPADOC legal status


2003-08-27 [18D] DEEMED TO BE WITHDRAWN

- Effective date: 20030219

2002-11-20 [17Q] FIRST EXAMINATION REPORT

- Effective date: 20021008

2000-02-09 [17P] REQUEST FOR EXAMINATION FILED

- Effective date: 19991210

2000-02-09 [AK] DESIGNATED CONTRACTING STATES:

- Kind Code of Ref Document: A1

- Designated State(s): DE FR GB