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System for hydraulic pump health monitoring

  • US 10,208,773 B2
  • Filed: 08/23/2016
  • Issued: 02/19/2019
  • Est. Priority Date: 08/23/2016
  • Status: Active Grant
First Claim
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1. A method of determining health of a hydraulic pump of a machine, the method comprising:

  • receiving, by an electronic control module of the machine and from a first sensor of the machine, information regarding a pressure of a fluid in a case drain providing a passage from the hydraulic pump to a hydraulic tank of the machine;

    receiving, by the electronic control module and from a second sensor of the machine, information regarding a temperature of the fluid in the case drain;

    determining, by the electronic control module, a flow of the fluid in the case drain based on the information regarding the pressure and the information regarding the temperature;

    determining, by the electronic control module, a portion of the flow of the fluid in the case drain that is directed to a particle counter of the machine;

    receiving, by the electronic control module and from the particle counter, information regarding particles in the portion of the flow of the fluid;

    determining, by the electronic control module, a quality of the fluid in the case drain based on the information regarding the particles in the portion of the flow of the fluid;

    determining, by the electronic control module, whether the flow of the fluid in the case drain exceeds a flow threshold or whether the quality of the fluid in the case drain is less than a quality threshold to determine the health of the hydraulic pump; and

    taking, by the electronic control module, a remedial action when at least one of the flow of the fluid in the case drain exceeds the flow threshold or the quality of the fluid in the case drain is less than the quality threshold.

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