Internal-combustion engines – Charge forming device – With fuel pump
Patent
1995-08-24
1996-09-24
Miller, Carl S.
Internal-combustion engines
Charge forming device
With fuel pump
123446, F02M 3704
Patent
active
055580670
ABSTRACT:
An electronic fuel injector includes a metering chamber defined by a metering piston and the sides and bottom of a bore defined within the injector body, and a timing chamber defined by the metering piston, the bore sides and a timing plunger slidably disposed within the bore. A biasing spring is connected to opposing surfaces of the timing plunger and metering piston for biasing the metering piston away from the timing plunger. The metering chamber is in constant fuel communication with a pressurized fuel source and the timing chamber receives fuel from the fuel source according to the actuation of a solenoid actuated control valve disposed therebetween. A fueling strategy for such an injector requires actuating the control valve to substantially fill the timing chamber before filling the metering chamber, for subsequent injection into the engine, when the force of the biasing spring is at a minimum.
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Ronald B. Lannan and Albert E. Sisson, "Cummins Electronic Controls for Heavy Duty Diesel Engines", International Congress on Transportation Electronics Proceedings, Oct. 17-18, 1988, pp. 277-294, Library of Congress Catalog Card No. 87-83470.
Blizard Norman C.
Free Paul D.
Cummins Engine Company, Inc.
Miller Carl S.
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