Maintenance alert system for heavy-duty trucks

  • US 6,172,602 B1
  • Filed: 03/22/1999
  • Issued: 01/09/2001
  • Est. Priority Date: 03/22/1999
  • Status: Expired due to Term
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First Claim
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1. A real-time maintenance alert system for use in a heavy duty truck having an engine including an air filter at an air inlet, and an engine controller having a communications data link and, the system comprising:

  • a sensor operative to produce a signal indicative of an air inlet depression;

    control logic at the engine controller, the control logic being conjured to process the sensor signal and to determine an air filter restriction real-time fault condition when the air inlet depression falls below a threshold, the control logic being operative to produce an output signal at the data link in response to the air filter restriction real-time fault condition; and

    a display device having a memory and configured to transmit and receive information over the data link, the display device processing the output signal and storing a status of the air filter in the memory, and generating an output signal indicative of the status.

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