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Oil properties diagnostic system for work machine

  • US 10,087,605 B2
  • Filed: 10/20/2015
  • Issued: 10/02/2018
  • Est. Priority Date: 12/15/2014
  • Status: Active Grant
First Claim
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1. A diagnostic system for a work machine including a server computer that collects at least one piece of sensor information from at least one oil property sensor provided in the work machine and determines an abnormality of the work machine based on the at least one piece of sensor information, the at least one oil property sensor sensing at least one oil property about oil used for operation of the work machine, comprising:

  • a data storage device in which the at least one piece of sensor information input from the at least one oil property sensor at least one determination value defined for each kind of the at least one piece of sensor information are stored;

    a processor connected to a memory storing instructions that when executed by the process configure the processor to;

    determine a degree of abnormality level of the oil based on the at least one piece of sensor information and the at least one determination value relating to the at least one piece of sensor information,determine whether the degree of abnormality level of the oil progresses to such an extent that an oil analysis involving oil extraction is necessary if the work machine is operated until a timing of a next oil replacement based on the determined degree of abnormality level of the oil the at least one piece of sensor information and a time change rate of the at least one piece of sensor information, andoutput information indicating that the oil analysis involving oil extraction is necessary to a computer connected to the server upon determining that the oil analysis involving oil extraction is necessary.

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