Control system for hydrostatic transmission

Details Control system for hydrostatic transmission Control system for hydrostatic transmission

1977-11-10

1980-03-11

Husar, C. J.

Machine element or mechanism

Elements

Gear casings

60431, 60468, F16H 4704, F16D 3102

Patent

active

041921992

ABSTRACT:
A hydrostatic transmission has an input connected to a prime mover and an output connected through a speed-change transmission to a load. A control element of this transmission is urged in a direction tending to increase the transmission ratio by a control cylinder pressurized from a hydraulic tachometer operated by the transmission input, and is urged in the opposite direction to decrease the ratio by a regulating cylinder connected via a feed line to the hydraulic network interconnecting the pump and motor of the transmission. During speed change the two cylinders are depressurized and the regulating cylinder is isolated from the network.

REFERENCES:
patent: 3884095 (1975-05-01), Miyao et al.
patent: 3903756 (1975-09-01), Hamma
patent: 4102425 (1978-07-01), Marsden et al.

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