Method and Device for Diagnosing and Controlling Combustion Instabilities in Internal Combustion Engines Operating in or Transitioning to Homogeneous Charge Combustion Ignition Mode
AssigneeUT-Battelle, LLC
InventorsRobert M. Wagner, Charles S. Daw, Johney B. Green, Kevin D. Edwards
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Abstract
This invention is a method of achieving stable, optimal mixtures of HCCI and SI in practical gasoline internal combustion engines comprising the steps of: characterizing the combustion process based on combustion process measurements, determining the ratio of conventional and HCCI combustion, determining the trajectory (sequence) of states for consecutive combustion processes, and determining subsequent combustion process modifications using said information to steer the engine combustion toward desired behavior.
Claims14
A method of achieving stable, optimal mixtures of SI and HCCI combustion in internal combustion engines comprising the steps of:
- characterizing the combustion process based on combustion process measurements,
- determining the ratio of conventional and HCCI combustion,
- determining the state of trajectory for consecutive combustion processes,
- determining subsequent combustion process modifications using said information from preceding combustion events to steer the engine toward desired behavior.
A device for achieving stable, optimal mixtures of SI and HCCI combustion in internal combustion engines comprising:
- means for characterizing the combustion process based on combustion process measurements,
- means for determining the ratio of conventional and HCCI combustion,
- means for determining the state of trajectory for consecutive combustion processes,
- means for determining subsequent combustion process modifications using said information from preceding combustion events to steer the engine toward desired behavior.
Dependencies are inferred from the claim text.