Spark timing control device for use in internal combustion engin

Details Spark timing control device for use in internal combustion engin Spark timing control device for use in internal combustion engin

1976-09-03

1979-06-26

Cox, Ronald B.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02P 504

Patent

active

041590139

ABSTRACT:
A spark timing control device for use in an internal combustion engine, which includes a pressure control valve wherein when an input vacuum is not higher than a given vacuum level, an output vaccum remains at a zero level, and when the input vacuum is not lower than the given level, the output vacuum will be a product of a proportional constant and the difference between the input vacuum and the aforesaid given vacuum level; a pressure source; and a vacuum advance control mechanism. The pressure source is connected to the input side of the pressure control valve, while the output side of the pressure control valve is connected to the vacuum advance control mechanism.
Various modifications of the pressure control valve employable in the spark timing control device are also presented.

REFERENCES:
patent: 3865089 (1975-02-01), Eichler et al.
patent: 3905342 (1975-09-01), Kobayashi et al.
patent: 3913540 (1975-10-01), Hayashi
patent: 3930515 (1976-01-01), Kennedy et al.
patent: 3973533 (1976-08-01), Arano
patent: 4064894 (1977-12-01), Ludwig

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