Method of and apparatus for controlling fuel injection in intern

Details Method of and apparatus for controlling fuel injection in intern Method of and apparatus for controlling fuel injection in intern

1996-08-30

1997-11-25

Nelli, R. A.

Internal-combustion engines

Charge forming device

Fuel injection system

F02M 5100

Patent

active

056900759

ABSTRACT:
A method of, and an apparatus for, controlling fuel injection in an internal combustion engine prevent lean misfires and a discharge of unburned HC at and after the start of the engine.
The apparatus has a drive circuit 50 for opening a fuel injector 12 of each cylinder at predetermined crank angles, a unit A for determining whether or not the speed of the engine is above a reference speed, a unit B for determining whether or not fuel in a cranking quantity has been injected into every cylinder of the engine, and a switching unit C for switching the quantity of fuel to be injected from the cranking quantity to a post-cranking quantity if the unit A determines that the engine speed is above the reference speed and the unit B determines that fuel in the cranking quantity has been injected into every cylinder.

REFERENCES:
patent: 5390641 (1995-02-01), Yamada et al.
patent: 5482023 (1996-01-01), Hunt et al.
patent: 5542393 (1996-08-01), Katoh et al.
patent: 5590633 (1997-01-01), Tomisawa et al.
patent: 5595161 (1997-01-01), Ott et al.

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