Hydrostatic test stand

Details Hydrostatic test stand Hydrostatic test stand

1990-11-28

1992-04-14

Raevis, Robert

Measuring and testing

Blower, pump, and hydraulic equipment

G01M 1900

Patent

active

051036711

ABSTRACT:
A test stand for testing hydrostatic drive units which have a variable displacement hydraulic pump in a closed fluid circuit with a hydraulic motor and are characterized by a motor output speed and a system fluid pressure. The test stand includes a power source for energizing a hydrostatic drive unit, a speed control for controlling the level of motor output speed, a pressure control for controlling the level of system fluid pressure, sensors for detecting the instantaneous level of motor output speed and system fluid pressure, and logic circuits for providing a command signal responsive to the sensed instantaneous levels to the speed control and the pressure control.

REFERENCES:
patent: 3712127 (1973-01-01), Petersen
patent: 4176549 (1979-12-01), Eichinger
patent: 4368638 (1983-01-01), Groves et al.
patent: 4382388 (1983-05-01), Ono
patent: 4798086 (1989-01-01), Styfhoorn
patent: 4807467 (1989-02-01), Kugler
patent: 4870819 (1989-10-01), Walzer

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