HCCI Engine Modeling and Control Using Conservation Principles

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

Abstract

The Homogeneous Charge Compression Ignition (HCCI) principle holds promise to increase efficiency and to reduce emissions from internal combustion engines. As HCCI combustion lacks direct ignition timing control and auto-ignition depends on the operating condition, control of auto-ignition is necessary. Since auto-ignition of a homogeneous mixture is very sensitive to operating conditions, a fast combustion phasing control is necessary for reliable operation. To this purpose, HCCI modeling and model-based control with experimental validation were studied. A six-cylinder heavy-duty HCCI engine was controlled on a cycle-to-cycle basis in real time by applying in-cylinder pressure feedback. A low-complexity physical model was developed, aiming at describing the major thermodynamic and chemical interactions in the course of an engine stroke. The model shows the importance of thermal interaction between the combustion and the cylinder walls. The model was used to synthesize a controller for controlling the combustion phasing by varying the inlet valve closing and the inlet temperature. The sythesized controller behaves well both in steady-state and during step changes of the desired combustion phasing.

Details

Authors
Organisations
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Control Engineering
  • Other Mechanical Engineering

Keywords

  • Multivariable Control, HCCI Engine, Physical Modeling
Original languageEnglish
Title of host publicationSAE Technical Paper 2008-01-0789
Publication statusPublished - 2008
Publication categoryResearch
Peer-reviewedYes
EventSAE World Congress 2008 - Detroit, Michigan, Detroit, MI, United States
Duration: 2008 Apr 142008 Apr 17

Conference

ConferenceSAE World Congress 2008
CountryUnited States
CityDetroit, MI
Period2008/04/142008/04/17

Related projects

Per Tunestål, Maria Henningsson & Rolf Johansson

Project: ResearchCollaboration with industry

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