Transmission control having a plurality of speed changing ratios

Details Transmission control having a plurality of speed changing ratios Transmission control having a plurality of speed changing ratios

1986-01-21

1988-01-26

Braun, Leslie

Machine element or mechanism

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

Preselected indexed position

180247, 74740, 74867, B60K 4118, F16H 3700

Patent

active

047210184

ABSTRACT:
A transmission control device for controlling the operation of a transmission system including a main transmission and a sub transmission comprises a control circuit adapted for effecting a change-over of the main transmission between different speed gears in accordance with the level of the torque output from an engine when speed modes of the sub transmission are changed over. It is therefore possible to allow the main transmission to select a gear conformable to the gear ratio set in the sub transmission in accordance with the engine output torque, whereby it is possible to obtain optimum shifting characteristics. In addition, it is possible to widen the shiftable region for the sub transmission.

REFERENCES:
patent: 3882740 (1975-05-01), Forster et al.
patent: 3943799 (1976-03-01), Sakai et al.
patent: 4038889 (1977-08-01), Lindow et al.
patent: 4274306 (1981-06-01), Yokoi et al.
patent: 4411174 (1983-10-01), Yokoi et al.
patent: 4444073 (1984-04-01), Moroto et al.
patent: 4466502 (1984-08-01), Sakai
patent: 4503927 (1985-03-01), Hayakawa et al.
patent: 4582159 (1986-04-01), Suzuki
patent: 4586583 (1986-05-01), Yamakawa et al.
patent: 4602696 (1986-07-01), Taga et al.

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