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Method and system for engine control

  • US 8,694,186 B2
  • Filed: 07/27/2011
  • Issued: 04/08/2014
  • Est. Priority Date: 07/27/2011
  • Status: Active Grant
First Claim
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1. A method of operating a vehicle including an engine, a motor, and a control system, comprising:

  • via the control system;

    determining a seasonal grade of fuel in a fuel tank of the vehicle relative to a current season of vehicle operation, andadjusting an engine fuel injection amount based on the determined seasonal grade of fuel in the fuel tank.

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