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Closed-Loop Control of Combustion Phasing in an HCCI Engine Using VVA and Variable EGR

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Author

Summary, in English

A homogeneous charge compression ignition (HCCI) engine requires closed-loop control of combustion phasing for reliable operation. Variable valve actuation (VVA) has previously been shown to enable cycle-to-cycle, cylinder-individual control with high precision, but suffers from a narrow operating range. Adding variable exhaust gas recirculation (EGR) to the closed-loop control structure can extend the operating range. A mid-ranging control structure is presented here for combined VVA and EGR actuations in a multi-cylinder engine. The control structure is simple to implement and preserves the fast, cylinder-individual, and precise actuation of the VVA system while extending the operating range. Experimental results verify the performance of the control structure.

Publishing year

2007

Language

English

Pages

501-506

Publication/Series

IFAC Proceedings Volumes

Volume

40

Document type

Conference paper

Topic

  • Other Mechanical Engineering
  • Control Engineering

Keywords

  • EGR
  • VVA
  • HCCI
  • Mid-ranging control

Conference name

5th IFAC Symposium on Advances in Automotive Control

Conference date

2007-08-20

Status

Published

Project

  • Diesel HCCI in a Multi-Cylinder Engine