Ignition timing adjusting system for spark-ignition internal com

Details Ignition timing adjusting system for spark-ignition internal com Ignition timing adjusting system for spark-ignition internal com

1978-01-24

1979-05-01

Lazarus, Ronald H.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

F02P 504

Patent

active

041518187

ABSTRACT:
This discloses an ignition timing adjusting system for spark-ignition internal combustion engines, which realizes an advance in ignition timing in relation to altitude or vertical height at which an engine is operating. This system comprises vacuum advance means responsive to a vacuum produced by the vacuum in the intake tube of the engine for advancing the ignition timing of the engine, and means for controlling the level of said vacuum produced by said intake tube vacuum in relation to the engine operating altitude. When the engine is operating at a higher altitude than that for which the ignition timing was originally set, the timing is advanced, under control of said vacuum level controlling means, to a position which is proper for the operation of the engine at such an altitude.

REFERENCES:
patent: 2383898 (1945-08-01), Udale
patent: 2384693 (1945-09-01), Olson
patent: 3521609 (1970-07-01), Kashiwagi et al.
patent: 3561411 (1971-02-01), Vasilescu et al.
patent: 3678907 (1972-07-01), Vartanian
patent: 3828743 (1974-08-01), Ludwig
patent: 3888221 (1975-06-01), Staley, Jr.
patent: 3948232 (1976-04-01), Gould et al.
patent: 3982553 (1976-09-01), Johnson et al.

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