Hydraulic drive assembly

Details Hydraulic drive assembly Hydraulic drive assembly

1997-06-10

1999-03-02

Nguyen, Hoang

Power plants

Pressure fluid source and motor

Having condition responsive control in a system of distinct...

60428, 60449, 60452, 51516, 51532, F16D 3102

Patent

active

058756302

ABSTRACT:
A hydraulic drive assembly includes a variable displacement pump fluidly connected in a closed loop circuit with a motor for driving an ancillary device, such as a fan. An auxiliary pump can be operatively connected to the pump, the motor and a reservoir for replenishing fluid losses in the closed loop circuit. An auxiliary circuit connected to the pump has a recirculating passage fluidly connected to the closed loop circuit downstream of the motor to reduce the necessary reservoir volume. A method for smoothly and continuously adjusting the output of the pump to drive the ancillary device is also disclosed.

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