Demonstrating optimum HCCI combustion with advanced control technology

Daniel L. Flowers*, Nick J. Killingsworth, Francisco Espinosa-Loza, Joel Martinez-Frias, Salvador M. Aceves, Miroslav Krstic, Robert Dibble

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

6 Scopus citations


We have converted a Caterpillar 3406 natural gas spark ignited engine to HCCI mode and used it as a test bed for demonstrating advanced control methodologies. Converting the engine required modification of most engine systems: piston geometry, starting, fueling, boosting, and (most importantly) controls. We implemented a thermal management system consisting of a recuperator that transfers heat from exhaust to intake gases and a dual intake manifold that permits precise cylinder-by-cylinder ignition control. Advanced control methodologies are used for (1) minimizing cylinder-to-cylinder combustion timing differences caused by small variations in temperature or compression ratio; (2) finding the combustion timing that minimizes fuel consumption; and (3) tuning the controller parameters to improve transient response. Tasks 2 and 3 were accomplished with extremum seeking, a non-model- based optimization scheme that may help deliver a practical solution to the challenging problem of HCCI engine control.

Original languageEnglish (US)
StatePublished - Dec 1 2009
EventPowertrains, Fuels and Lubricants Meeting, SFL 2009 - Florence, Italy
Duration: Jun 15 2009Jun 15 2009


OtherPowertrains, Fuels and Lubricants Meeting, SFL 2009

ASJC Scopus subject areas

  • Automotive Engineering
  • Safety, Risk, Reliability and Quality
  • Pollution
  • Industrial and Manufacturing Engineering


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