Extending the Operating Region of Multi-Cylinder Partially Premixed Combustion using High Octane Number Fuel

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


Partially Premixed Combustion (PPC) is a combustion concept by which it is possible to get low smoke and NOx emissions simultaneously. PPC requires high EGR levels to extend the ignition delay so that air and fuel mix prior to combustion to a larger extent than with conventional diesel combustion. This paper investigates the operating region of single injection PPC for three different fuels; Diesel, low octane gasoline with similar characteristics as diesel and higher octane standard gasoline. Limits in emissions are defined and the highest load that fulfills these requirements is determined. The investigation shows the benefits of using high octane number fuel for Multi-Cylinder PPC. With high octane fuel the ignition delay is made longer and the operating region of single injection PPC can be extended significantly. Experiments are carried out on a multi-cylinder heavy-duty engine at low, medium and high speed.


Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Other Mechanical Engineering


  • Internal Combustion Engines, Partially Premixed Combustion, Compression Ignition
Original languageEnglish
Title of host publicationSAE Technical Paper
PublisherSociety of Automotive Engineers
Publication statusPublished - 2011 Apr 12
Publication categoryResearch
EventSAE World Congress & Exhibition, 2011 - Detroit, Michigan, United States
Duration: 2011 Apr 122011 Apr 14

Publication series

NameSAE Technical Paper Series
PublisherSAE International
ISSN (Print)0148-7191


ConferenceSAE World Congress & Exhibition, 2011
CountryUnited States
CityDetroit, Michigan