Torque limiting control
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United States of America
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Mar 11, 1980
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N/A
app pub date -
Jul 11, 1977
filing date -
May 20, 1974
priority date (Note) -
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Abstract
A torque limiting control for a pair of variable displacement hydraulic pumps having displacement varying means and servo means including springs urging each of the displacement varying means to a position for maximum pump displacement and fluid operated means acting in opposition to the springs to shift said displacement varying means for reduction in pump displacement, said control including means for summing the fluid pressures generated by both pumps and controlling the servo means for the two pumps to progressively move the displacement varying means for reduction of pump displacement as the sum of the fluid pressures rises above a predetermined value at a certain pump displacement and thereby limit the sum of the torques required by said pumps.
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