Integrated hydraulic circuit for off highway work vehicles

Details Integrated hydraulic circuit for off highway work vehicles Integrated hydraulic circuit for off highway work vehicles

1979-12-26

1982-03-30

Cohen, Irwin C.

Power plants

Pressure fluid source and motor

Coaxial impeller and turbine unit

60422, 60456, 60DIG3, 60DIG5, F01M 102, F15B 1306, F15B 2104, F16D 3302

Patent

active

043217931

ABSTRACT:
A pair of pumps deliver pressurized fluid to a steering control valve assembly controlling the operation of a steering cylinder. The steering control valve assembly diverts any excess of the incoming pressurized fluid to a hoist control valve assembly controlling the operation of a pair of implement hoist cylinders. The hoist control valve assembly also diverts any excess of the incoming fluid away from the hoist cylinder pair, this time to a retarder or brake system for cooling same. The retarder receives additional cooling fluid from a hydraulic torque converter, to which the fluid has been forced from another pump. On leaving the retarder the pressurized fluid is cooled and then delivered to a transmission lubricating circuit.

REFERENCES:
patent: 3101815 (1963-08-01), Thompson et al.
patent: 3987874 (1976-10-01), Fuehrer et al.
patent: 4175647 (1979-11-01), Hanke
patent: 4209985 (1980-07-01), Master
patent: 4215720 (1980-08-01), Belker

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