Rotational speed control apparatus for internal combustion engin

Details Rotational speed control apparatus for internal combustion engin Rotational speed control apparatus for internal combustion engin

1993-07-28

1995-01-24

Okonsky, David A.

Internal-combustion engines

Engine speed regulator

Idle speed control

F02M 300

Patent

active

053834305

ABSTRACT:
A rotational speed control apparatus for internal combustion engines is constructed so that, when drive control of an idling speed control valve is performed based on a reference control quantity of the idling speed control valve, a highland learning value or a lowland learning value is stored for the idling speed control and a feedback correction quantity is computed for the idling speed control, in order to control a rotational speed of an internal combustion engine for a vehicle at a desired rotational speed, which is set in accordance with an engine temperature, at the time of an idling operation of the internal combustion engine. It is therefore possible to prevent an excessive drop in the rotational speed or a stall of the internal combustion engine, which occurs after the vehicle has descended a slope to a lowland, due to erroneous learning which is caused when the vehicle descends a slope from a highland to a lowland while travelling from a lowland to a highland and then to a lowland and so on.

REFERENCES:
patent: 4602601 (1986-07-01), Kamai
patent: 4860707 (1989-08-01), Ohata
patent: 5010866 (1991-04-01), Ohata
patent: 5184588 (1993-02-01), Kato et al.
patent: 5228421 (1993-07-01), Orzel
patent: 5289807 (1994-03-01), Yonekawa

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