Idling control apparatus of internal control engine

Details Idling control apparatus of internal control engine Idling control apparatus of internal control engine

1997-05-15

1998-11-24

Argenbright, Tony M.

Internal-combustion engines

Engine speed regulator

Idle speed control

12333923, 12333926, F02D 4108

Patent

active

058394109

ABSTRACT:
An idling control apparatus of an internal combustion engine which undergoes an after-start lean-burn control for operating the internal combustion engine at an air-fuel ratio on a lean side of a theoretical air-fuel ratio after the engine started. According to the apparatus, the engine rotational speed under the after-start lean-burn control at a low temperature is stabilized, fluctuation of the engine rotational speed at a time when a lean-burn control is canceled is restrained, and a smooth idling state is realized. The apparatus includes an idling engine rotational speed controller which calculates a control amount for controlling the engine rotational speed on idling to a target engine rotational speed and carries out a feedback control by the calculated control amount, an after-start lean-burn control discriminator for discriminating whether the after-start lean-burn control is carried out after starting of the engine or not, and a corrector which calculates a correction amount for correcting the control amount of the idling engine rotational speed controller in accordance with a result of discrimination of the after-start lean-burn control discriminator. The idling engine rotational speed is controlled by the control amount corrected by the corrector.

REFERENCES:
patent: 4644921 (1987-02-01), Kobayashi et al.
patent: 5463993 (1995-11-01), Livshits et al.

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