System for controlling a continuously variable transmission havi

Details System for controlling a continuously variable transmission havi System for controlling a continuously variable transmission havi

1988-05-31

1990-03-20

Braun, Leslie A.

Machine element or mechanism

Rotary member or shaft indexing, e.g., tool or work turret

Preselected indexed position

74867, B60K 4112

Patent

active

049091034

ABSTRACT:
A continuously variable belt drive transmission has a torque converter with a lockup clutch. Transmission ratio of the transmission starts to change in accordance with driving conditions of a vehicle, and the lockup clutch is engaged in accordance with driving conditions of the vehicle. A start signal for starting of the changing of the transmission ratio is produced in accordance with driving conditions, and a lockup signal for engaging of the lockup clutch is produced in accordance with driving conditions. In response to the start signal and to the lockup signal the change of the transmission ratio and engaging of the lockup clutch are performed at the same time.

REFERENCES:
patent: 4478322 (1984-10-01), Carlson et al.
patent: 4495576 (1985-01-01), Ito
patent: 4510822 (1985-04-01), Yamamura et al.
patent: 4597308 (1986-07-01), Tanaka et al.
patent: 4601368 (1986-07-01), van Deursen
patent: 4660440 (1987-04-01), Matsumura et al.
patent: 4669336 (1987-06-01), Okada et al.
patent: 4682518 (1987-07-01), Takada et al.
patent: 4715145 (1987-12-01), Takeda et al.
patent: 4730709 (1988-03-01), Kawata et al.
patent: 4735113 (1988-04-01), Yamamuro et al.

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