HCCI combustion phasing with closed-loop combustion control using variable compression ratio in a multi cylinder engine

Göran Haraldsson*, Per Tunestål, Bengt Johansson, Jari Hyvönen

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

65 Scopus citations

Abstract

This study applies Closed-Loop Combustion Control (CLCC) using Variable Compression Ratio (VCR) and cylinder balancing using variable lambda to solve the problem. Step changes of set points for combustion phasing, Compression Ratio (CR), and load together with ramps of engine speed and inlet air temperature are investigated. Performances of the controllers are investigated by running the engine at either a constant amount of injected fuel corresponding to an approximate load of 1.5 or 2.5 bar BMEP and/or constant speed of 2000 rpm. Commercial RON 92 gasoline is used in the test. The CLCC is found to be fast and effective and has a potential of handling step changes in a matter of cycles, while the speed and temperature ramps need some more optimization of the CLCC. The CR controller is very fast and has a time constant corresponding to three engine cycles at 2000 rpm.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2003
Event2003 JSAE/SAE International Spring Fuels and Lubricants Meeting - Yokohama, Japan
Duration: May 19 2003May 22 2003

Other

Other2003 JSAE/SAE International Spring Fuels and Lubricants Meeting
CountryJapan
CityYokohama
Period05/19/0305/22/03

ASJC Scopus subject areas

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

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