Global Patent Index - EP 1387946 A1

EP 1387946 A1 20040211 - LEAK-REDUCED PRESSURE-CONTROLLED FUEL INJECTOR

Title (en)

LEAK-REDUCED PRESSURE-CONTROLLED FUEL INJECTOR

Title (de)

LECKAGEREDUZIERTER DRUCKGESTEUERTER KRAFTSTOFFINJEKTOR

Title (fr)

INJECTEUR DE CARBURANT COMMANDE PAR PRESSION, A REDUCTION DE FUITE

Publication

EP 1387946 A1 20040211 (DE)

Application

EP 02740295 A 20020426

Priority

  • DE 0201541 W 20020426
  • DE 10122245 A 20010508

Abstract (en)

[origin: WO02090759A1] The invention relates to a device for the injection of fuel into the combustion chamber of an internal combustion engine. A control unit (1) is provided, in which a housing chamber (4) is embodied, continuously pressurised with high pressure fuel by means of an inlet on a storage chamber (common rail). The high pressure fuel constantly pressurises a control chamber (6) of a control valve body (5), by means of an inlet throttle (7), whereby the control valve body (5) opens or closes a nozzle supply (14) to an injection nozzle. A pressure piece (21), defining the control chamber (6), is provided in the housing chamber (4) of the control unit (1), located on a planar surface (23) on the housing (2) and containing an outlet throttle (28) which relieves the pressure of the control chamber (6) and which is controlled by means of a servo valve (24).

IPC 1-7

F02M 59/46; F02M 63/02

IPC 8 full level

F02M 47/00 (2006.01); F02M 47/02 (2006.01); F02M 51/06 (2006.01); F02M 59/46 (2006.01); F02M 61/10 (2006.01); F02M 61/16 (2006.01); F02M 63/02 (2006.01); F02M 63/00 (2006.01)

CPC (source: EP US)

F02M 63/0005 (2013.01 - EP US); F02M 63/0007 (2013.01 - EP US); F02M 63/0029 (2013.01 - EP US)

Citation (search report)

See references of WO 02090759A1

Designated contracting state (EPC)

DE FR IT

DOCDB simple family (publication)

WO 02090759 A1 20021114; DE 10122245 A1 20021212; DE 50201793 D1 20050120; EP 1387946 A1 20040211; EP 1387946 B1 20041215; JP 2004519602 A 20040702; US 2004011889 A1 20040122

DOCDB simple family (application)

DE 0201541 W 20020426; DE 10122245 A 20010508; DE 50201793 T 20020426; EP 02740295 A 20020426; JP 2002587796 A 20020426; US 33237703 A 20030818