Start control method for automatic clutch

Details Start control method for automatic clutch Start control method for automatic clutch

1984-12-26

1987-08-04

Gruber, Felix D.

Boots, shoes, and leggings

192 0058, 192 0076, 192 358, B60K 4122, F16D 2716, G05D 1702

Patent

active

046850627

ABSTRACT:
Herein disclosed is a method of controlling an automatic clutch when starting to move a vehicle such as an automobile having an automatic transmission. The maximum accelerating r.p.m. of an engine at the start is detected and stored so that a clutch actuator is kept deenergized to leave the clutch released, while the engine r.p.m. detected is lower than the maximum value stored, but is energized again to apply the clutch when the engine r.p.m. exceeds the maximum value. More specifically, the running state of the vehicle is detected to determine the operating speed of the clutch actuator, and the automatic clutch is applied at the operating speed deterined. The engine r.p.m., once the vehicle is moving is detected and compared with the maximum accelerating engine r.p.m. Then, the operating speed of the clutch actuator is dropped to zero to interrupt engagement of the clutch while the engine r.p.m. detected is smaller than the maximum engine r.p.m. Engagement of the clutch is restored when the engine r.p.m. again exceeds the maximum value.

REFERENCES:
patent: 4295551 (1981-10-01), Zimmermann et al.
patent: 4487303 (1984-12-01), Boueri et al.
patent: 4518068 (1985-05-01), Oguma et al.
patent: 4527678 (1985-07-01), Pierce et al.
patent: 4558772 (1985-12-01), Grimes et al.
patent: 4561530 (1985-12-01), Parsons et al.

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