Internal-combustion engines – Engine speed regulator – Idle speed control
Patent
1987-01-13
1988-06-07
Argenbright, Tony M.
Internal-combustion engines
Engine speed regulator
Idle speed control
180 693, F02D 4116
Patent
active
047489510
ABSTRACT:
An apparatus for controlling the idling engine speed of an automobile engine comprises: an engine speed sensor for detecting an engine speed; a control unit for calculating a difference between an actual engine speed detected by the sensor and a targeted idling engine speed preset in accordance with the operating conditions of the engine, for judging whether or not a power steering system is being operated to a point close to an operatable limit thereof when the automobile is at a standstill, and for outputting a signal for increasing by a predetermined value a gain of a proportional term for proportional-integral type feedback control employed in controlling the idling engine speed if judgment is made that the power steering system is being operated to a point close to the operatable limit thereof when the automobile is at a standstill; and an ISC valve for adjusting a flow rate of air supplied to the engine in accordance with a signal output by the control unit.
REFERENCES:
patent: 4492195 (1985-01-01), Takahashi et al.
patent: 4545449 (1985-10-01), Fujiwara
patent: 4582032 (1986-04-01), Hara et al.
patent: 4617890 (1986-10-01), Kobayashi et al.
Atago Takeshi
Ishii Toshio
Manaka Toshio
Argenbright Tony M.
Hitachi , Ltd.
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