Electronic distribution type ignition system

Details Electronic distribution type ignition system Electronic distribution type ignition system

1990-07-06

1991-07-23

Nelli, Raymond A.

Internal-combustion engines

High tension ignition system

Current or voltage sensing in coil primary

123643, F02P 312

Patent

active

050334450

ABSTRACT:
This specification discloses an electronic distribution type ignition system wherein at least two ignition coils are provided, and wherein the secondary voltage of the ignition coils is directly supplied to spark plugs. An ignition system according to this invention comprises switching circuits for controlling the supply of a primary voltage to said, ignition coils, a resistance element wherein a current flows selectively which corresponds to a primary current for each of two ignition coils, supplied through two of said switching circuit, current control circuits for detecting a terminal voltage of said resistance element and for controlling, according to said terminal voltage, the primary current flowing through each said igniton coil so as to be at a target value, and a board having said resistance element formed thereon.

REFERENCES:
patent: 3377998 (1968-04-01), Adams et al.
patent: 3575154 (1971-04-01), Taylor
patent: 4147145 (1979-04-01), Domland et al.
patent: 4153032 (1979-05-01), Chateau
patent: 4176645 (1979-12-01), Jundt et al.
patent: 4366800 (1983-01-01), Seegar et al.
patent: 4380989 (1983-04-01), Iakaki
patent: 4750467 (1988-06-01), Noubalfan
patent: 4836176 (1989-06-01), Fujino et al.
patent: 4949697 (1990-08-01), Ookawa

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