Method and system for idle speed control

Details Method and system for idle speed control Method and system for idle speed control

1986-10-20

1987-11-24

Cox, Ronald B.

Internal-combustion engines

Engine speed regulator

Idle speed control

123479, 123198F, F02M 300

Patent

active

047081082

ABSTRACT:
A method of controlling the idle speed of an internal combustion engine is disclosed, in which the rotations of the internal combustion engine is detected by a crank angle sensor, the flow rate of air supplied to the engine is detected by an air flow sensor, the amount of fuel supplied to the engine is controlled by a fuel supply unit, an idle condition of the engine is detected by another sensor, and an abnormal condition with the engine speed exceeding a predetermined level in idle state is detected by an electronic control unit by use of electrical signals from the sensors. The number of times fuel is supplied to the engine is counted, and the fuel supply is suspended each time the count of the counter reaches a predetermined value.

REFERENCES:
patent: 2771867 (1956-11-01), Peras
patent: 4198933 (1980-04-01), Sieber
patent: 4499876 (1985-02-01), Yamamoto
patent: 4520272 (1985-05-01), Danno
patent: 4580220 (1986-04-01), Braun

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