Air-to-fuel ratio control system for internal combustion engines

Internal-combustion engines – Intake manifold – Manifold tuning – balancing or pressure regulating means

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Details

123119D, 123124B, 60276, 60285, F02M 700

Patent

active

041291050

ABSTRACT:
A desired function signal is provided by a logical circuit which selects one of a signal corresponding to the speed of a vehicle carrying an internal combustion engine, a signal corresponding to the intake pressure, a signal corresponding to the air-to-fuel ratio of the mixture supplied to the engine, and a signal corresponding to the opening of a throttle valve in accordance with the driving conditions of the vehicle. The amount of additional intake air flowing through an additional intake system provided in the engine is controlled in accordance with the desired function signal, thus providing an air-fuel mixture ratio which suits the driving conditions of the vehicle, the running speed of the vehicle in particular.

REFERENCES:
patent: 3626915 (1971-12-01), Nakajima
patent: 3916170 (1975-10-01), Norimatsu et al.
patent: 4020813 (1977-05-01), Hattori et al.
patent: 4036186 (1977-07-01), Hattori et al.
patent: 4051672 (1977-10-01), Masaki et al.
patent: 4052968 (1977-10-01), Hattori et al.
patent: 4075982 (1978-02-01), Asano et al.

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