Evaluation of the operating range of partially premixed combustion in a multi cylinder heavy duty engine with extensive EGR

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

Abstract

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 and injection timings sufficiently early or late to extend the ignition delay so that air and fuel mix extensively prior to combustion. This paper investigates the operating region of single injection diesel PPC in a multi cylinder heavy duty engine resembling a standard build production engine. Limits in emissions and fuel consumption are defined and the highest load that fulfills these requirements is determined. Experiments are carried out at different engine speeds and a comparison of open and closed loop combustion control are made as well as evaluation of an extended EGR-cooling system designed to reduce the EGR temperature. In this study the PPC operating range proved to be limited. The highest loads that fulfilled the emission criteria correspond to 30% of maximum load for conventional combustion at low speed and 21% of maximum load for conventional combustion at high speed. The effect of changes in combustion control was small while a reduced EGR temperature could increase the operating range significantly.

Details

Authors
  • Magnus Lewander
  • Bengt Johansson
  • Per Tunestal
  • Nathan Keeler
  • Simon Tullis
  • Nebojsa Milovanovic
  • Pär Bergstrand
Organisations
External organisations
  • Delphi Diesel Systems
  • Volvo Powertrain AB
Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Energy Engineering
Original languageEnglish
Title of host publicationSAE Technical Papers
Number of pages11
Publication statusPublished - 2009
Publication categoryResearch
Peer-reviewedYes
EventSAE 2003 World Congress and Exhibition - Detroit, Michigan, United States
Duration: 2003 Mar 32003 Mar 6

Conference

ConferenceSAE 2003 World Congress and Exhibition
CountryUnited States
CityDetroit, Michigan
Period2003/03/032003/03/06