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Engine monitor and recorder

  • US 4,575,803 A
  • Filed: 12/30/1981
  • Issued: 03/11/1986
  • Est. Priority Date: 12/30/1981
  • Status: Expired due to Fees
First Claim
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1. A turbine engine monitoring and recording system comprising:

  • an engine-mounted electronic circuit means, including a data processor such as a microprocessor or microcomputer and a non-volatile memory for receiving engine operating information and for storing such information;

    additional electronic circuit means, remote from the turbine engine, and including an additional microprocessor and display means;

    temperature sensing means mounting on said engine for supplying temperature information to said engine-mounted circuit means;

    circuit means included in said engine-mounted electronic circuit means for storing information indicating the number of times that the turbine engine has been started, and the cumulative length of time that the turbine has been operated above each of a plurality of predetermined temperature levels and within predetermined temperature bands;

    additional circuit means for interconnecting said remote circuit means with said engine mounted circuit means;

    said system including for each temperature channel, means for storing both the total time the turbine engine has been operated above each predetermined temperature defining the lower limit of the channel, and also the time the turbine engine has been operated above each said predetermined temperature beyond the manufacturers specified time limit for each operation above that temperature, to provide an indication of the cumulative operating time over limits; and

    switch means associated with said remote electronic circuit means for ordering selected information stored in said non-volatile memory, and for displaying the ordered information on said display means.

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