Variable Valve Actuation for Timing Control of a Homogeneous Charge Compression Ignition Engine

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceeding


Autoignition of a homogeneous mixture is very sensitiveto operating conditions. Therefore fast combustion phasingcontrol is necessary for reliable operation. There areseveral means to control the combustion phasing of a Homogeneous Charge Compression Ignition (HCCI) engine.This paper presents cycle-to-cycle cylinder individual controlresults from a six-cylinder HCCI engine using a VariableValve Actuation (VVA) system. As feedback signal,the crank angle for 50% burned, based on cylinder pressure,is used. Three control structures are evaluated,Model Predictive Control (MPC), Linear Quadratic Gaussiancontrol (LQG) and PID control. In the control designof the MPC and LQG controller, dynamic models obtainedby system identication were used. Successful experimentswere performed on a port-injected six-cylinderheavy-duty Diesel engine operating in HCCI mode.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Control Engineering
  • Other Mechanical Engineering
Original languageEnglish
Title of host publicationSAE Technical Papers 2005-01-0147
Publication statusPublished - 2005
Publication categoryResearch

Publication series

ISSN (Print)0148-7191

Related projects

Per Tunestål, Rolf Johansson, Petter Strandh & Johan Bengtsson


Project: Research

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