Input torque control for a variable displacement hydraulic...

Details Input torque control for a variable displacement hydraulic... Input torque control for a variable displacement hydraulic...

F - Mech Eng,Light,Heat,Weapons

16

H

138/45.1

F16H 61/46 (2006.01)

Patent

CA 1184832

Input Torque Control for a Variable Displacement Hydraulic Transmission Abstract A torque control for a drive system having a hydraulic transmission connectable to a prime mover (30) and having a pair of hydraulically-connected displace- ment devices V and F, with one device having variable displacement, a torque sensor (35) generates a torque signal representative of prime mover output torque in either driving or braking mode, torque demand generators (47,47') generate a torque demand signal selectively in either driving or braking modes, a governor valve (63) compares the torque signals and generates a control signal and a control servo 17, responsive to the con- trol signal, controls the displacement of the variable displacement device V to eliminate any difference in torque signals.

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