Apparatus for regulating the idling rpm in an internal combustio

Details Apparatus for regulating the idling rpm in an internal combustio Apparatus for regulating the idling rpm in an internal combustio

1984-05-31

1985-04-30

Nelli, Raymond A.

Internal-combustion engines

Engine speed regulator

Idle speed control

123352, F02D 1110

Patent

active

045137129

ABSTRACT:
An apparatus is proposed for regulating the idling rpm in an internal combustion engine. The apparatus has a PI regulator which has an insensitivity control circuit associated with it. Minimum and maximum value limiting circuits are furthermore provided, their thresholds being dependent on operating characteristics. Finally, a D element circuit cooperates with the PI regulator. The D element is subject to a threshold, and it comes into effect only when the rpm is dropping, its function being such as to steepen the I component of the PI regulator.

REFERENCES:
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patent: 4278059 (1981-07-01), Collonia
patent: 4306527 (1981-12-01), Kinugawa et al.
patent: 4344397 (1982-08-01), Geiger et al.
patent: 4365601 (1982-12-01), Yamazoe et al.
patent: 4381746 (1983-05-01), Miyagi et al.
patent: 4389996 (1983-06-01), Yaegashi et al.
patent: 4397275 (1983-08-01), Itoh et al.
patent: 4399789 (1983-08-01), Yano
patent: 4441471 (1984-04-01), Kraft et al.

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