Idling control method and system for internal combustion engine

Details Idling control method and system for internal combustion engine Idling control method and system for internal combustion engine

1986-05-30

1988-03-15

Bonck, Rodney H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0076, 192 0092, 192 358, 192103F, 192109F, 74866, B60K 4122

Patent

active

047307080

ABSTRACT:
A vehicle includes an engine and an automatic transmission which has a fluid torque converter, a forward clutch, and a manual range setting valve. Idling control for providing anti creep control is performed by, during engine idling time while the manual range setting valve is set to a forward driving range and the vehicle is substantially stationary, reducing the engagement pressure of the forward clutch by reducing the actuating pressure provided to it. A rotational speed associated with the fluid torque converter is detected, and the actuating pressure provided to the forward clutch is controlled so that the rotational speed associated with the fluid torque converter does not drop below a certain rotational speed value. Thereby good anti creep control is provided. A system is also disclosed for performing the method.

REFERENCES:
patent: 4513638 (1985-04-01), Nishikawa et al.
patent: 4584908 (1986-04-01), Nishikawa et al.
patent: 4603604 (1986-08-01), Nishikawa et al.
patent: 4625589 (1986-12-01), Nishikawa et al.

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