Engine idling speed controlling system

Internal-combustion engines – Engine speed regulator – Idle speed control

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Details

123340, 123361, F02B 4116

Patent

active

045805350

ABSTRACT:
An engine idling speed controlling system including, for controlling the throttle valve opening appropriately, a first idling speed control means for comparing a detected signal provided from an engine speed sensor during idle running with a target engine idling speed and providing a first idling control signal, a correction value learning means for learning a long-time correction value or a just-previous correction value on the basis of a cumulative value or the newest value of a detected signal provided from a throttle position sensor during operation of the first idling speed control means, a second idling speed control means for comparing a detected signal provided from the throttle position sensor during idle running with a target throttle opening, receiving the long-time correction value and the just-previous correction value and producing a second idling control signal, and means for controlling the idle opening of the throttle valve in accordance with one of the first and second idling control signals.

REFERENCES:
patent: 4344399 (1982-08-01), Matsumura et al.
patent: 4444168 (1984-04-01), Matsumura et al.
patent: 4491922 (1985-01-01), Kobayoshi et al.
patent: 4506642 (1985-03-01), Pfalzgraf et al.
patent: 4508075 (1985-04-01), Takao et al.
patent: 4508076 (1985-04-01), Oda et al.
patent: 4509477 (1985-04-01), Takao et al.

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