Controlling device for discharge pressure of pump

  • Inventors:
  • Assignees: Kubota Ltd
  • Publication Date: October 12, 1981
  • Publication Number: JP-S56129788-A

Abstract

PURPOSE: To prevent a hunting phenomenon by a method wherein following pump system is started at a point of time when a clutch oil pressure reaches the upper limit set pressure and stopped at a point of time when the clutch oil pressure becomes the lower limit set pressure. CONSTITUTION: Pressure switches 30a, 30b, 31a, 31b are provided in a control circuit of hydraulic clutches 9a, 9b which are inserted between feed water pumps 1a, 1b and motors 8a, 8b, and the following pump system (b) is started at a point of time when the clutch oil pressure reaches the upper limit set pressure and stopped at a point of time when the clutch oil pressure reaches the lower limit set pressure. Whereby since the difference between a start command pressure and a stop command pressure can be made large, the hunting phenomenon can be prevented. COPYRIGHT: (C)1981,JPO&Japio

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Cited By (2)

    Publication numberPublication dateAssigneeTitle
    JP-H0510518-B2February 09, 1993Hitachi Ltd
    JP-S5965591-AApril 13, 1984Hitachi LtdWater supply device