Clutch control system for a continuously variable transmission

Details Clutch control system for a continuously variable transmission Clutch control system for a continuously variable transmission

1985-04-12

1987-03-10

Krizmanich, George H.

192 clutches and power-stop control

Vortex-flow drive and clutch

With brake

192 0096, 192103R, B60K 4102

Patent

active

046484965

ABSTRACT:
A clutch control system for a continuously variable transmission includes a mode determination system which samples input signals including position of the neutral-drive selector, driver demand, engine speed, vehicle speed, and clutch input speed. From these signals the operating mode is determined and the clutch control system operating mode is set. In starting the vehicle, a minor pressure feedback loop and a major engine speed feedback loop are used. When the clutch is locked up, these control loops are not employed in regulating the vehicle operation.

REFERENCES:
patent: 4172505 (1979-10-01), Rabus et al.
patent: 4194608 (1980-03-01), Usui et al.
patent: 4401200 (1983-08-01), Heidemeyer et al.
patent: 4466521 (1984-08-01), Hattori et al.
patent: 4514811 (1985-04-01), Daubenmier et al.
patent: 4515041 (1985-05-01), Frank et al.
patent: 4520912 (1985-06-01), Ferris et al.

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