Control of a steplessly variable vehicle transmission

Details Control of a steplessly variable vehicle transmission Control of a steplessly variable vehicle transmission

1984-10-31

1986-09-09

Staab, Lawrence J.

Machine element or mechanism

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

Preselected indexed position

74867, 474 28, B60K 4112

Patent

active

046101837

ABSTRACT:
A steplessly variable vehicle transmission of a belt-pulley type which is provided with an electronic control unit for controlling the speed ratio of the transmission in accordance with the engine operating condition, such as the engine load and the engine speed. The control unit has a shift control map which includes a shift-up zone, a shift-down zone and a speed ratio hold zone between the shift-up and shift-down zones so that the speed ratio of the transmission is maintained constant in acceleration and deceleration as long as the engine operating condition is in the hold zone.

REFERENCES:
patent: 3895542 (1975-07-01), Miyauchi
patent: 4313354 (1982-02-01), Iwanaga et al.
patent: 4411174 (1983-10-01), Yokoi et al.
patent: 4466312 (1984-08-01), Oguma

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