Integrated hydraulic system

Details Integrated hydraulic system Integrated hydraulic system

1984-09-24

1987-01-06

Chambers, A. Michael

Power plants

Pressure fluid source and motor

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

60422, F16D 3102

Patent

active

046336664

ABSTRACT:
An integrated hydraulic system for use in a construction work vehicle has three hydraulic pumps for supplying hydraulic fluid into a steering mechanism and work implement operating actuators. One of the pumps is a steering pump for supplying through a steering circuit hydraulic fluid into the steering mechanism. Another pump is a work implement pump for selectively supplying hydraulic fluid through a work implement circuit by the interposition of a pilot operated directional control valve into the steering circuit and/or the work implement circuit. Still another pump is an auxiliary pump for selectively supplying hydraulic fluid through an auxiliary circuit by the interposition of the directional control valve into the steering circuit and/or the work implement circuit. The directional control valve is controlled by a pressure differential across a restrictor provided in the steering circuit.

REFERENCES:
patent: 2979908 (1961-04-01), Shook
patent: 3355994 (1967-12-01), Malott
patent: 4023364 (1977-05-01), Bianchetta
patent: 4073141 (1978-02-01), Lohbauer
patent: 4321793 (1982-03-01), Uranaka et al.
patent: 4422290 (1983-12-01), Huffman

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