Method and apparatus for controlling a clutch of a vehicle

Details Method and apparatus for controlling a clutch of a vehicle Method and apparatus for controlling a clutch of a vehicle

1988-06-01

1989-08-29

Braun, Leslie A.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0076, 192 0096, B60K 4102, F16D 3702

Patent

active

048608637

ABSTRACT:
A clutch control apparatus and method for a vehicle. The apparatus includes two sensors for detecting an engine speed Ne and a speed Nin of a clutch at an input side of a transmission and a conroller, respectively. The controller stores in advance a transmission coefficient C (referring to a speed ratio Nin/Ne) of the clutch and determines an output torque of the clutch using the transmission coefficient C and the engine speed Ne.
In the method, an engine speed Ne and an input shaft speed Nin of a transmission are detected, then a speed ratio Nin/Ne is calculated. On the other hand, a transmission coefficient C is determined from a predetermined relation of the transmission coefficient C and the speed ratio Nin/Ne. Finally, the output torque of the clutch is determined using the transmission coefficient C and the engine speed Ne, for instance, by a formula which is C.multidot.(N.sub.e).sup.2.

REFERENCES:
patent: 4527678 (1985-07-01), Pierce et al.
patent: 4606446 (1985-08-01), Watanabe
patent: 4624349 (1986-09-01), Watanabe
patent: 4638898 (1987-01-01), Braun
patent: 4715482 (1987-12-01), Watanabe et al.
patent: 4723644 (1988-02-01), Sakakiyama
patent: 4730711 (1988-03-01), Sakakiyama

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