Control for continuously variable transmission for quick downshi

Details Control for continuously variable transmission for quick downshi Control for continuously variable transmission for quick downshi

1987-09-10

1989-09-05

Diehl, Dwight G.

Machine element or mechanism

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

Preselected indexed position

74867, B60K 4112

Patent

active

048627712

ABSTRACT:
A control for a continuously variable transmission for quick downshifting to establish an effective engine brake running of an automotive vehicle, comprises a shift actuator, a shift operating mechanism for effecting a shifting in reduction ratio of the continuously variable transmission in response to a change in operating position of the shift actuator, and a control unit for varying a speed at which the shift actuator changes its operating position when a manually operable valve is placed at a L range position and an engine throttle valve is fully closed. More specifically, the shift actuator changes its operating position at a higher speed for quick downshifting to a reduction ratio suitable for an effective engine brake running.

REFERENCES:
patent: 4519790 (1985-05-01), Yamamuro et al.
patent: 4526557 (1985-07-01), Tanaka et al.
patent: 4533340 (1985-08-01), Abo et al.
patent: 4536171 (1985-08-01), Tanaka et al.
patent: 4543077 (1985-09-01), Yamamuro et al.
patent: 4589071 (1986-05-01), Tananyri et al.
patent: 4597308 (1986-07-01), Tanaka et al.
patent: 4603602 (1986-05-01), Tanaka et al.
patent: 4651595 (1987-03-01), Miyawaki
patent: 4721019 (1988-01-01), Nakamura et al.
patent: 4736655 (1988-04-01), Kumura et al.

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