Ignition controller for internal combustion engine

Details Ignition controller for internal combustion engine Ignition controller for internal combustion engine

1997-07-08

1999-02-09

Moulis, Thomas N.

Internal-combustion engines

Spark ignition timing control

Electronic control

F02P 506

Patent

active

058681159

ABSTRACT:
An ignition controller for an internal combustion engine includes a control/calculation circuit for creating drive signals to injectors and ignition coils based on the rotation angle SGT and the operating state of the internal combustion engine. The control/calculation circuit includes means for calculating the respective timings at which the injectors and the ignition coils are controlled according to an operating state, means for discriminating a predetermined operating state corresponding to a state where fuel adheres to the ignition plugs and means for switching the timings at which the ignition plugs are driven according to a signal which discriminates the predetermined operating state. When the predetermined operating state is not discriminated, the timings at which the ignition coils are driven are set to the vicinity of the upper dead point of a compression stroke and when the predetermined operating state is discriminated, the above timings are set to the respective vicinities of the upper dead point of the compression stroke and the upper dead point of an exhaust stroke. With this arrangement, the ignition controller for the internal combustion engine can always maintain a stable combustion state by avoiding the adhesion of fuel to the ignition plugs.

REFERENCES:
patent: 4112890 (1978-09-01), Manger et al.
patent: 4517952 (1985-05-01), Hosoya
patent: 4796208 (1989-01-01), Kumagai
patent: 4903676 (1990-02-01), Gillbrand et al.
patent: 4947810 (1990-08-01), Gillbrand et al.
patent: 5085192 (1992-02-01), McDougal et al.
patent: 5724938 (1998-03-01), Yamada

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