Electronic type air/fuel ratio control system

Details Electronic type air/fuel ratio control system Electronic type air/fuel ratio control system

1980-05-06

1982-06-22

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Idle speed control

123336, 123340, 123344, 123362, 123399, F02D 1110

Patent

active

043356893

ABSTRACT:
An electronic type air/fuel ratio control system for use in gasoline engines comprises an accelerator, a detector of the manipulation angle of the accelerator, a shunt conduit by-passing a throttle valve, an air by-pass valve exposed in the shunt conduit for controlling flow rate of by-pass air, and a control circuit. The control circuit is responsive to the output of the accelerator manipulation angle detector and generates a control signal for the air by-pass valve, whereby the air/fuel ratio can be controlled with high accuracy when the flow rate of air is low.

REFERENCES:
patent: 3964457 (1976-06-01), Coscia
patent: 4106451 (1978-08-01), Hattori
patent: 4182295 (1980-01-01), Zeller
patent: 4237838 (1980-12-01), Kinugawa

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