Air-fuel ratio controlling system

Details Air-fuel ratio controlling system Air-fuel ratio controlling system

1977-05-02

1979-02-20

Burns, Wendell E.

Internal-combustion engines

Intake manifold

Manifold tuning, balancing or pressure regulating means

123 32EE, 160276, 160285, 123119D, 123124B, F02D 104, F02D 3500, F02D 3300, F02B 1500

Patent

active

041400933

ABSTRACT:
An air-fuel ratio controlling system for an internal combustion engine including a control circuit for controlling, in accordance with a detected air-fuel ratio, the operation of a drive motor of a control valve mounted in an additional air supply passage. The control circuit includes a timing pulse generator for generating timing pulses synchronized with a running speed of the engine and thus the control valve is intermittently rotated by a predetermined amount in response to the timing pulses. By increasing the frequency of the timing pulses during the periods of rapid acceleration and deceleration, a response to the change in the engine speed is further improved.

REFERENCES:
patent: 3949551 (1976-04-01), Eichler et al.
patent: 3983851 (1976-10-01), Hoshi et al.
patent: 4046118 (1977-09-01), Aono
patent: 4052968 (1977-10-01), Hattori et al.
patent: 4057042 (1977-11-01), Aono

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