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Cold Start Emission Reduction Monitoring System and Method

  • US 20070283682A1
  • Filed: 06/12/2006
  • Published: 12/13/2007
  • Est. Priority Date: 06/12/2006
  • Status: Abandoned Application
First Claim
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1. A method for controlling a vehicle having an engine, the engine having an exhaust with an emission control device, comprising:

  • during an engine start, at least temporarily adjusting an operating parameter of the engine to increase exhaust mass flow or temperature when needed to more rapidly heat the emission control device;

    estimating temperature of the emission control device during said engine start; and

    comparing said estimated temperature to a reference catalyst temperature required to achieve an emission threshold.

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