Investigation and Comparison of Residual Gas Enhanced HCCI using Trapping (NVO HCCI) or Rebreathing of Residual Gases

Patrick Borgqvist, Per Tunestål, Bengt Johansson

Research output: Chapter in Book/Report/Conference proceedingPaper in conference proceedingpeer-review

15 Citations (SciVal)
1 Downloads (Pure)

Abstract

A comparison between throttled and unthrottled spark ignition combustion with residual enhanced HCCI combustion is made. Early intake valve closing and late intake valve closing valve strategies for unthrottled spark ignition combustion are evaluated and compared. Approximately 3-6 percent relative improvement in net indicated efficiency is seen when comparing unthrottled spark ignition combustion with throttled spark ignition combustion depending on valve strategy and engine speed. The relative improvement in efficiency from spark ignition combustion to HCCI combustion is approximately 20 percent for the conditions presented in this study. The rebreathing strategies have the highest efficiency of the cases in this study.
Original languageEnglish
Title of host publicationSAE Technical Paper Series
PublisherSociety of Automotive Engineers
DOIs
Publication statusPublished - 2011
EventJSAE/SAE International Fuels & Lubricants Conference - Kyoto, Japan
Duration: 2011 Aug 30 → …

Publication series

Name
ISSN (Print)0148-7191

Conference

ConferenceJSAE/SAE International Fuels & Lubricants Conference
Country/TerritoryJapan
CityKyoto
Period2011/08/30 → …

Subject classification (UKÄ)

  • Other Mechanical Engineering

Keywords

  • Internal Combustion Engines
  • HCCI
  • Negative Valve Overlap

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