EP 1184563 B1 20041124 - Fuel injector
Title (en)
Fuel injector
Title (de)
Kraftstoffeinpritzventil
Title (fr)
Injecteur de carburant
Publication
Application
Priority
JP 2000260779 A 20000830
Abstract (en)
[origin: EP1184563A2] A fuel injector (1) comprises a housing (2) with nozzles, a needle (3) movably accommodated in a needle accommodating chamber (5) formed in the housing, a fuel supply conduit (6) extending in the housing to the nozzles, a pressure control chamber (8) defined between the needle (3) and an inner wall of the needle accommodating chamber (5), a valve chamber (10) formed in the housing and connected to the pressure control chamber (8) via a communicating conduit, and a pressure control valve (14) accommodated in the valve chamber for controlling communication between the valve chamber and a relief conduit (12). When the pressure control valve (14) prevents communication between the valve chamber (10) and the relief conduit (12), fuel pressure in the pressure control chamber is increased and the needle is displaced in a first direction in which a volume of the pressure control chamber is increased and, when the pressure control valve connects the valve chamber and the relief conduit, a fuel pressure in the pressure control chamber drops and the needle is displaced in a second direction in which a volume of the pressure control chamber is reduced. The valve chamber is connected to the fuel supply conduit (6) via an inflowing conduit, so that fuel flows into the pressure control chamber from the fuel supply conduit through the valve chamber when the pressure control valve prevents communication between the valve chamber and the relief conduit. <IMAGE>
IPC 1-7
IPC 8 full level
F02M 47/00 (2006.01); F02M 45/00 (2006.01); F02M 45/12 (2006.01); F02M 47/02 (2006.01); F02M 59/46 (2006.01); F02M 61/10 (2006.01)
CPC (source: EP)
F02M 45/12 (2013.01); F02M 47/027 (2013.01); F02M 63/0026 (2013.01)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 1184563 A2 20020306; EP 1184563 A3 20031119; EP 1184563 B1 20041124; DE 60107332 D1 20041230; DE 60107332 T2 20051208; JP 2002070684 A 20020308; JP 3829604 B2 20061004
DOCDB simple family (application)
EP 01119222 A 20010809; DE 60107332 T 20010809; JP 2000260779 A 20000830