Motor displacement control system

Details Motor displacement control system Motor displacement control system

1979-02-08

1980-03-04

Geoghegan, Edgar W.

Power plants

Pressure fluid source and motor

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

60427, 60459, 60484, F15B 1120, F15B 1306

Patent

active

041910176

ABSTRACT:
A motor displacement control system (10) has a variable displacement drive motor (38), an auxiliary motor (30), a source (12) of fluid under pressure for operating the motors (30, 38), a first valve (50) for controlling the displacement of the drive motor (38) and maintaining at least a first pressure level thereto, and a second valve (98) for controlling the displacement of the drive motor (38) in response to operation of the auxiliary motor (30) at a second pressure level and overriding the first valve (50). The system is particularly useful on a motor grader.

REFERENCES:
patent: 3984978 (1976-10-01), Alderson

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