System for controlling the ignition timing of an engine

Details System for controlling the ignition timing of an engine System for controlling the ignition timing of an engine

1984-03-08

1985-09-17

Argenbright, Tony M.

Internal-combustion engines

Spark ignition timing control

Electronic control

123406, F02P 504

Patent

active

045413819

ABSTRACT:
A system for controlling the ignition timing of an engine provided with a supercharger. The system comprises a vacuum advance device comprising two chambers defined by a diaphragm and a rod connecting the diaphragm to an advance mechanism of a distributor of the engine. The vacuum advance device is operated by the difference between the pressure at a signal port in the intake passage at an upstream side of the throttle valve of the engine and the pressure at a signal port provided in the wall of the intake passage at a position just above the throttle valve, the pressure thereat varying with the variation of the opening degree of the throttle valve. The vacuum advance device is so arranged as to retard the ignition timing at high engine speed by the pressure difference.

REFERENCES:
patent: 2559859 (1951-07-01), Elliott et al.
patent: 3203411 (1965-08-01), Seiden

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