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Hybrid thermal energy conversion for HCCI heated intake charge system

  • US 7,621,262 B2
  • Filed: 05/10/2007
  • Issued: 11/24/2009
  • Est. Priority Date: 05/10/2007
  • Status: Active Grant
First Claim
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1. A method of operating an internal combustion engine coupled in a hybrid powertrain, comprising:

  • extracting thermal and electrical waste energy from components of an electrical power system of the hybrid powertrain; and

    during HCCI operation;

    adjusting intake air temperature of the engine by coordinating said waste energy extraction, the coordination including, when a battery is fully charged, first using the extracted electrical waste energy to power an electrical heater in an engine intake.

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