Title (en)

Fuel injector

Title (de)

Brennstoffeinspritzventil

Title (fr)

Injecteur de carburant

Publication

EP 1382838 A3 20040421 (DE)

Application

EP 03012488 A 20030602

Priority

DE 10232193 A 20020716

Abstract (en)

[origin: EP1382838A2] The valve has an actuator with a piston, a lifting piston interacting with the actuator piston via a pressure medium, a valve needle interacting with the lifting piston with a valve closure body, a valve seat body and a seal seat. The actuator piston has at least one step bounding on a damping chamber spatially separate from a working chamber and shaped or arranged so that the pressure medium can flow to or from it via a choke point. The valve has a piezoelectric, electrostrictive or magnetostrictive actuator (4), an actuator piston (9), a lifting piston (15) interacting with the actuator piston via a pressure medium and working chamber (26), a valve needle (20) interacting with the lifting piston with a valve closure body (22), a valve seat body (21) and a seal seat. The actuator piston has at least one stage bounding on a damping chamber (27) spatially separate from the working chamber and shaped or arranged so that the pressure medium can flow to or from it via a choke point (30).

IPC 1-7

F02M 51/06; F02M 61/08; F02M 55/04

IPC 8 full level

F02M 47/04 (2006.01); F02M 51/06 (2006.01); F02M 61/06 (2006.01); F02M 61/08 (2006.01); F02M 61/16 (2006.01); F02M 63/00 (2006.01)

CPC (source: EP)

F02M 51/0603 (2013.01); F02M 61/08 (2013.01); F02M 61/167 (2013.01)

Citation (search report)

• [XY] WO 0123741 A1 20010405 - BOSCH GMBH ROBERT [DE], et al
• [A] GB 2339451 A 20000126 - LUCAS IND PLC [GB]
• [A] DE 10155229 A1 20030522 - BOSCH GMBH ROBERT [DE]
• [A] DE 19642441 A1 19980416 - BOSCH GMBH ROBERT [DE]
• [A] GB 2356020 A 20010509 - DELPHI TECH INC [US]
• [PA] DE 10121891 A1 20021107 - BOSCH GMBH ROBERT [DE]
• [A] EP 0135872 A2 19850403 - BOSCH GMBH ROBERT [DE]
• [Y] PATENT ABSTRACTS OF JAPAN vol. 1997, no. 11 28 November 1997 (1997-11-28)

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 PT RO SE SI SK TR

DOCDB simple family (publication)

EP 1382838 A2 20040121; EP 1382838 A3 20040421; EP 1382838 B1 20170816; DE 10232193 A1 20040205; JP 2004052767 A 20040219

DOCDB simple family (application)

EP 03012488 A 20030602; DE 10232193 A 20020716; JP 2003196577 A 20030714