HST drive circuit

Details HST drive circuit HST drive circuit

2007-09-18

2007-09-18

Kershteyn, Igor (Department: 3745)

Power plants

Pressure fluid source and motor

Having distinct cooling or lubricating structure

C060S487000

Reexamination Certificate

active

10529489

ABSTRACT:
The present invention makes it possible, in an HST drive circuit wherein an HST pump and an HST motor have been separately stored in a pump case and a motor case, to efficiently cool the HST drive circuit. A cooling line for, while discharging a relief oil from a charge circuit9for replenishing an HST closed circuit5with a pressure oil into a pump case3, making the discharged oil flow into a reservoir7through the pump case3, a communicating pipe14, a motor case4, and an oil cooler16is formed, so that hydraulic oil circulating through an HST pump1, an HST motor2, and the HST closed circuit5is cooled by an oil flowing through the cooling line.

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Sauer-Danfoss, Series 20 Axial Piston Pumps, Technical information, 520L0517, Feb. 2002.

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