Automatic spark timing device

Details Automatic spark timing device Automatic spark timing device

1975-07-28

1978-09-12

Cox, Ronald B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02P 504

Patent

active

041128877

ABSTRACT:
A digital control device for an internal combustion engine ignition system includes a shaft angle digital encoder, a shaft speed digital encoder, a matrix memory addressed by the speed digital encoder and programmed to produce a digital output representing the required ignition angle for each speed value, a comparator connected to the angle encoder and the matrix to produce an output pulse when the digital signals therefrom coincide and means controlled by the angle encoder, the matrix memory device and the comparator for determining the shaft angles at which current flow through the ignition coil is initiated and terminated.

REFERENCES:
patent: 3738339 (1973-06-01), Huntzinger
patent: 3749073 (1973-07-01), Asplund
patent: 3752139 (1973-08-01), Asplund
patent: 3757755 (1973-09-01), Carner
patent: 3853103 (1974-12-01), Wahl
patent: 3923021 (1975-12-01), Stark
patent: 3941103 (1976-03-01), Hartig
patent: 3943898 (1976-03-01), Kiencke
patent: 3976043 (1976-08-01), Canup

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