Power plants – Pressure fluid source and motor – Condition responsive control of motive fluid flow
Patent
1994-10-17
1997-01-28
Nguyen, Hoang
Power plants
Pressure fluid source and motor
Condition responsive control of motive fluid flow
60487, 60494, F16D 3102, F16D 3900
Patent
active
055968724
ABSTRACT:
A fluid power transmission for driving automotive accessories at a constant speed with a variable speed input includes a pump driven by a motor vehicle engine in communication with a hydraulic motor which drives the motor vehicle accessories. A working fluid is disposed within a conduit system which communicates the pump driving force with the hydraulic motor. A flow control valve in the return line from the hydraulic motor to the pump provides a constant input flow rate to the pump independent on motor vehicle engine speed and the accessory load on the hydraulic motor to provide a constant output speed at a necessary pressure for the pump to maintain the accessories at a predetermined optimal rotational speed.
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