EP 1210512 B1 20041103 - INJECTOR
Title (en)
INJECTOR
Title (de)
INJEKTOR
Title (fr)
INJECTEUR
Publication
Application
Priority
- DE 0002675 W 20000810
- DE 19939445 A 19990820
Abstract (en)
[origin: WO0114715A1] The invention relates to a injector (18), especially for controlling the injection of fuel into a combustion chamber of an internal combustion engine. The injector has a closing member (30) which is subjected to the hydraulic action of an actuating device (44, 52, 54). Said actuating device has a valve body (54) which is movably guided in a control channel (44) and which is actuated by a piezoelectric actuator (52). The valve body interacts with two control cross-sections (68, 70) located one behind the other, in order to control the pressure means connections between a high pressure supply channel (24) and a discharge channel (46). The first control cross-section (68) in the direction of actuation of the valve body (54) therefor forms a seat valve (51) with said valve body (54) and the second control cross-section (70) in the direction of actuation forms a sliding valve (71). A throttle gap (72) also forms between the valve body (54) and the wall of the second control cross-section (70) when said valve body is extended out to the maximum. This throttle gap determines the pressure ratios in the injector (18) and therefor the injection quantity per time unit.
IPC 1-7
IPC 8 full level
F02M 47/00 (2006.01); F02M 45/04 (2006.01); F02M 47/02 (2006.01); F02M 51/06 (2006.01); F02M 59/46 (2006.01)
CPC (source: EP KR)
F02M 45/04 (2013.01 - EP); F02M 47/027 (2013.01 - EP KR); F02M 63/0026 (2013.01 - EP KR); F02M 63/0042 (2013.01 - KR); F02M 63/0225 (2013.01 - KR)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
WO 0114715 A1 20010301; AT E281598 T1 20041115; CZ 2002608 A3 20030618; DE 19939445 A1 20010301; DE 50008529 D1 20041209; EP 1210512 A1 20020605; EP 1210512 B1 20041103; JP 2003507641 A 20030225; KR 20020025982 A 20020404
DOCDB simple family (application)
DE 0002675 W 20000810; AT 00958238 T 20000810; CZ 2002608 A 20000810; DE 19939445 A 19990820; DE 50008529 T 20000810; EP 00958238 A 20000810; JP 2001518564 A 20000810; KR 20027002129 A 20020219