EP 1031721 A2 20000830 - Fuel pressure control device for high pressure fuel injection system
Title (en)
Fuel pressure control device for high pressure fuel injection system
Title (de)
Krafstoffdrucksteuervorrichtung für Hochdruckkraftstoffeinspritzsystem
Title (fr)
Dispositif de commande de pression pour système d'injection de carburant à haute pression
Publication
Application
Priority
JP 4619799 A 19990224
Abstract (en)
In a fuel pressure control apparatus for a high-pressure fuel injection system provided with a common rail (15), a supply pump (13) for force-feeding fuel to the common rail, and a fuel injection valve (17) attached to each cylinder of a diesel engine (1) and connected at one end to the common rail (15), an attempt is made to securely reduce a surplus of fuel pressure making use of a limited period during which normal fuel injection is not carried out. In exclusively performing pressure-release of fuel in the common rail (15) by driving the fuel injection valve (17) within an invalid injection period, the fuel injection valve (17) is driven in a cycle that does not depend on an operational condition of the engine (1), while adjusting a timing for driving the fuel injection valve (17) in such a manner as to prevent interference with the normal fuel injection control. <IMAGE>
IPC 1-7
IPC 8 full level
F02D 41/38 (2006.01); F02M 37/00 (2006.01); F02M 55/02 (2006.01); F02B 3/06 (2006.01); F02D 41/12 (2006.01)
CPC (source: EP)
F02D 41/3872 (2013.01); F02B 3/06 (2013.01); F02D 41/123 (2013.01); F02D 2200/0602 (2013.01); F02D 2250/31 (2013.01)
Citation (applicant)
JP H02191865 A 19900727 - NIPPON DENSO CO
Designated contracting state (EPC)
DE ES FR GB IT
DOCDB simple family (publication)
EP 1031721 A2 20000830; EP 1031721 A3 20030409; EP 1031721 B1 20050112; DE 60017299 D1 20050217; DE 60017299 T2 20050602; ES 2232335 T3 20050601; JP 2000248983 A 20000912; JP 4122615 B2 20080723
DOCDB simple family (application)
EP 00102054 A 20000202; DE 60017299 T 20000202; ES 00102054 T 20000202; JP 4619799 A 19990224