Title:
FUEL INJECTION NOZZLE FOR AN INTERNAL COMBUSTION ENGINE
Document Type and Number:
WIPO Patent Application WO2000050762
Kind Code:
B1
Abstract:
A fuel injection nozzle for an internal combustion engine having a fuel injection pump that is driven by the engine, a fuel injection nozzle opening (118) being supplied with pressurized fluid by the pump. A needle valve (120) controls the flow of pressurized fluid through the nozzle opening (118). The fuel pump includes a fuel valve (48) under the control of electronic engine control module to effect sequential ON/OFF cycles for the fuel valve to establish a pilot fuel delivery through the nozzle followed by a full fuel delivery injection pulse, a damping flow passage in the nozzle, and a flow damping pin (138) in the opening through which fuel flows as the needle valve (120) displaces fuel, the damping pin being biased to an injection nozzle closed position by a needle valve spring (146) whereby a distinct pilot pulse of fuel is delivered through the nozzle in advance of delivery of a full injection pulse.
Inventors:
HUTCHINGS TODD
MOSHER DONNA
GILLIUM BRUCE
MOSHER DONNA
GILLIUM BRUCE
Application Number:
PCT/US2000/004382
Publication Date:
December 07, 2000
Filing Date:
February 21, 2000
Export Citation:
Assignee:
DIESEL TECH CO (US)
International Classes:
F02M45/04; F02M57/02; F02M59/36; F02M63/00; (IPC1-7): F02M47/02
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