EP 0204117 B1 19880720 - FUEL INJECTION PUMP FOR INTERNAL-COMBUSTION ENGINES
Title (en)
FUEL INJECTION PUMP FOR INTERNAL-COMBUSTION ENGINES
Publication
Application
Priority
DE 3517974 A 19850518
Abstract (en)
[origin: US4733645A] A fuel injection pump for internal combustion engines which has an rpm-proportional injection onset adjusting device, a pressure control valve controlling the supply pressure (phd f), a cold-start acceleration device having a pressure valve associated with the pressure control valve, and a full-load stop, controlled by an adjustment device, for limiting the maximum full-load quantity injected by the fuel injection pump. The adjustment device has a piston, which is acted upon on one end by the supply pressure in the suction chamber of the injection pump and on the other end by a pressure (pa) that is made to differ from the supply pressure by means of two separate throttles. The two throttles have the effect that if the pressure valve is closed, the adaptation device is subjected to a differential pressure which is approximately equal to that when the pressure valve is opened, and so the full-load courses attained in normal operation and in cold operation are virtually identical.
IPC 1-7
IPC 8 full level
F02D 1/02 (2006.01); F02D 1/04 (2006.01); F02D 1/12 (2006.01); F02M 41/12 (2006.01); F02M 59/44 (2006.01); F02D 1/18 (2006.01)
CPC (source: EP US)
F02D 1/025 (2013.01 - EP US); F02M 41/126 (2013.01 - EP US); F02M 59/447 (2013.01 - EP US); F02D 2001/186 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0204117 A1 19861210; EP 0204117 B1 19880720; DE 3517974 A1 19861120; DE 3660407 D1 19880825; JP 2525363 B2 19960821; JP S61265329 A 19861125; US 4733645 A 19880329
DOCDB simple family (application)
EP 86105435 A 19860419; DE 3517974 A 19850518; DE 3660407 T 19860419; JP 11094286 A 19860516; US 85954186 A 19860505