Spark timing control system for an internal combustion engine

Details Spark timing control system for an internal combustion engine Spark timing control system for an internal combustion engine

1977-01-24

1978-03-07

Cox, Ronald B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123117R, F02P 504

Patent

active

040773728

ABSTRACT:
A spark timing control system for an internal combustion engine. The spark timing of the engine is controlled by a signal generating device driven in synchronism with the engine which develops signals that represent engine crankshaft position. The signal generating device has mechanisms for phase shifting the signal as a function of engine speed and engine manifold vacuum. The system includes a spark timing controller connected to the signal generating device which is capable of retarding spark timing from that set by the signal generating device in a plurality of crankshaft angle steps. The ignition timing provided by the spark timing controller is controlled by an electronic spark selection device which responds to engine operating parameters such as engine speed, engine manifold vacuum and engine temperature. The electronic spark selection device is capable of controlling the system to select the spark timing provided by the signal generating device or at a spark timing retarded from that provided by the signal generating device.

REFERENCES:
patent: 3756212 (1973-09-01), Schirmer et al.
patent: 3972310 (1976-08-01), Gambill
patent: 3990417 (1976-11-01), Tershak
patent: 4003354 (1977-01-01), Canup

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