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Engine control strategy for a hybrid HCCI engine

  • US 6,390,054 B1
  • Filed: 08/26/2000
  • Issued: 05/21/2002
  • Est. Priority Date: 08/26/2000
  • Status: Active Grant
First Claim
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1. A method of operating a hybrid homogenous-charge compression-ignition (HCCI) engine and spark ignition (SI) engine, the engine having at least two cylinder groups, each of said cylinder groups comprising at least one cylinder, the method comprising the steps of:

  • detecting a transition request to transition the engine from a current operating mode to a desired operating mode and, in response;

    transitioning the first cylinder group from the current engine operating mode to the desired engine operating mode during a first time period; and

    transitioning the second cylinder group from the current engine operating mode to the desired engine operating mode during a second time period, wherein the second time period is later than the first time period.

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