Device for controlling the idling speed of an engine

Details Device for controlling the idling speed of an engine Device for controlling the idling speed of an engine

1982-06-22

1983-12-06

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Idle speed control

123361, F02B 3300, F02D 1110

Patent

active

044186665

ABSTRACT:
An engine comprising a main intake passage having a throttle valve therein. A bypass passage is branched off from the main intake passage located upstream of the throttle valve and is connected to the main intake passage located downstream of the throttle valve. A flow control valve, actuated by a step motor, is arranged in the bypass passage. The step motor is controlled by an electronic control unit having three memories. The data, indicating the step position of the step motor, is stored in the three memories at the same time. When at least two pieces of data among the data stored in the three memories are the same, it is determined that the two pieces of data are considered as true data indicating the actual step position of the step motor.

REFERENCES:
patent: 4359983 (1982-11-01), Carlson
patent: 4364348 (1982-12-01), Itoh
patent: 4378768 (1983-04-01), Itoh

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