Hydraulic control apparatus for hydraulic transmission

Details Hydraulic control apparatus for hydraulic transmission Hydraulic control apparatus for hydraulic transmission

1991-06-13

1992-09-08

Bonck, Rodney H.

Machine element or mechanism

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

Preselected indexed position

74867, 74864, 192 76, B60K 4116

Patent

active

051448645

ABSTRACT:
A hydraulic control apparatus for a transmission performs hydraulic control for the pressure controlling valves by conducting a feedback pressure control on one pressure controlling valve provided in the transmission on the basis of the output of a hydraulic sensor and by performing feedforward control on the other pressure controlling valve in the transmission utilizing the results of the feedback control.

REFERENCES:
patent: 4648496 (1987-03-01), Petzold et al.
patent: 4718012 (1988-01-01), Oshiage
patent: 4735113 (1988-04-01), Kamamuro et al.
patent: 4829433 (1989-05-01), Nakano et al.
patent: 4846019 (1989-07-01), Kumura
patent: 4893526 (1990-01-01), Tokoro
patent: 4916982 (1990-04-01), Suzuki

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