Spark-advance control apparatus for internal combustion engine

Details Spark-advance control apparatus for internal combustion engine Spark-advance control apparatus for internal combustion engine

1975-06-12

1977-04-05

Husar, C. J.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

1231465A, F02P 100

Patent

active

040155650

ABSTRACT:
An apparatus for controlling spark advance in an internal combustion engine of an automotive vehicle, characterized by a circuit arrangement which is operative to detect the angular speed of rotation of the engine output shaft in a digital fashion and produce digital signals responsive to changes in preselected operating conditions such as engine output speed and intake manifold vacuum for controlling the spark advance in accordance with predetermined schedules. The spark advance is thus controlled without being affected by negligible or incidental transient fluctuations in the operating conditions of the engine and the advance characteristics can be readily altered by varying the schedules on which the digital signals are produced.

REFERENCES:
patent: 3756212 (1973-09-01), Schirmer et al.
patent: 3853103 (1974-12-01), Wahl et al.
patent: 3898894 (1975-08-01), Aono et al.
patent: 3904856 (1975-09-01), Monpetit
patent: 3906205 (1975-09-01), Yoshida et al.
patent: 3921610 (1975-11-01), Hartig
patent: 3927648 (1975-12-01), Hawai et al.

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