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Supplementing engine control via a diagnostics port

  • US 8,718,905 B2
  • Filed: 11/11/2013
  • Issued: 05/06/2014
  • Est. Priority Date: 09/15/2011
  • Status: Active Grant
First Claim
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1. An electronic device comprising:

  • a housing;

    a processor and a memory disposed within the housing;

    a connector arranged to couple the electronic device to a diagnostic port associated with a vehicle having a factory engine control unit (factory ECU) that includes ECU memory and ECU control algorithms, the factory ECU being arranged to direct operation of an engine in a plurality of different displacement modes; and

    an interface that allows the processor and the memory to communicate messages to the factory ECU through the diagnostics port;

    wherein the processor is configured to send a control command message to the factory ECU while the vehicle is being driven, wherein the control command causes the factory ECU to direct operation of the vehicle in a selected one of the plurality of different displacement modes that is different than the displacement mode that the factory ECU would otherwise direct operation of the vehicle in, without requiring any modification of the factory ECU.

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