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SPARK TIMING AND CONTROL DURING TRANSITIONS BETWEEN SPARK IGNITED COMBUSTION AND HOMOGENOUS CHARGE COMPRESSION IGNITION

  • US 20090229562A1
  • Filed: 08/12/2008
  • Published: 09/17/2009
  • Est. Priority Date: 03/11/2008
  • Status: Active Grant
First Claim
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1. A control system for an engine, comprising:

  • an air per cylinder (APC) generating module that generates measured and desired APC values;

    a combustion transition module that selectively transitions the engine from spark ignition (SI) combustion to homogeneous charge compression ignition (HCCI) combustion and from HCCI combustion to SI combustion;

    a spark control module that selectively retards spark during said transitions based on a ratio of said measured APC value and said desired APC value.

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