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

Research output: Chapter in Book/Report/Conference proceedingBook chapter


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

  • Other Mechanical Engineering
  • Control Engineering
Original languageEnglish
Title of host publicationHomogeneous Charge Compression Ignition (HCCI) Combustion 2005
ISBN (Print)0-7680-1608-8
Publication statusPublished - 2005
Publication categoryResearch

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