Investigation of the combustion characteristics with focus on partially premixed combustion in a heavy duty engine

Magnus Lewander*, Kent Ekholm, Bengt Johansson, Per Tunestål, Nebojsa Milovanovic, Nathan Keeler, Tony Harcombe, Pär Bergstrand

*Corresponding author for this work

Research output: Contribution to conferencePaperpeer-review

11 Scopus citations

Abstract

Partially Premixed Combustion (PPC) has shown its potential by combining high combustion controllability with emission characteristics that are close to those of an HCCI engine. In order to get PPC the ignition delay needs to be long enough for the fuel and air to mix prior to combustion. This can be achieved by injecting the fuel sufficiently early while running with high EGR. In order to find out where and how PPC occurs a map that shows the changes in combustion characteristics with injection timing and EGR was created. The combustion characteristics were studied in a six cylinder heavy duty engine where the Start of Injection (SOI) was swept from early to late injection over a wide range of EGR levels. The emissions were monitored during the sweeps and in the most promising regions, with low emissions and high efficiency, additional changes in injection pressure and engine speed were applied to get a more versatile picture of the combustion.

Original languageEnglish (US)
DOIs
StatePublished - Dec 1 2008
Event2008 SAE International Powertrains, Fuels and Lubricants Congress - Shanghai, China
Duration: Jun 23 2008Jun 25 2008

Other

Other2008 SAE International Powertrains, Fuels and Lubricants Congress
CountryChina
CityShanghai
Period06/23/0806/25/08

ASJC Scopus subject areas

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

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