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U.S. Department of Energy
Office of Scientific and Technical Information

Fuel injection system for diesel engine

Patent ·
OSTI ID:6232872
A fuel injection system is described for a diesel engine comprising a fuel injection nozzle, a valve needle slidably supported within the fuel injection nozzle and adapted to be lifted under fuel pressure fed from a fuel injection pump to increase the effective spray area with increase in the lift of the valve needle. A needle-lift-suppressing means limits the lift of the valve needle to a pre-lift of a predetermined amount when the engine operates at low load and/or low speed. A starting detecting means detects starting of the engine. A needle-lift-correcting means is adapted to receive an output of the starting detecting means and to control the needle-lift-suppressing means so as to permit lift of the valve needle beyond pre-lift, irrespective of the engine load and engine speed when the engine is started.
Assignee:
Mazda Motor Corp.
Patent Number(s):
US 4669429
OSTI ID:
6232872
Country of Publication:
United States
Language:
English