F - Mech Eng,Light,Heat,Weapons – 02 – B
Patent
F - Mech Eng,Light,Heat,Weapons
02
B
341/38.121
F02B 3/00 (2006.01) F02D 41/12 (2006.01) F02D 41/36 (2006.01)
Patent
CA 1110735
ABSTRACT OF THE DISCLOSURE A fuel injection system for an internal combustion, spark ignited engine, including injectors disposed in proximity to the engine intake valves, employs an R-C time circuit for generating actuating pulses to the injectors. The capacitor of the time circuit is charged to a voltage which is a function of the manifold pressure, and upon receipt of a triggering signal, generated in timed relation to the engine operation, discharges through the resistance of the time circuit which is varied as a function of other engine operating parameters. To modify the charge of fuel that is provided to the engine during deceleration, the capacitor differentiates a voltage from a sensor measuring manifold pressure and controls the conductivity of a transistor shunting the resistance in the discharge path of the time circuit. In an alternative embodiment, a resis- tance element in the discharge path of a pulse generating time circuit is varied by a mechanical differentiator device having an element positioned as a function of the rate of decrease in manifold pressure.
277591
Allied Corporation
Gowling Lafleur Henderson Llp
LandOfFree
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