Experimental assessment of diesel engine cylinder deactivation performance during low-load transient operations

Cody M. Allen, Mrunal C. Joshi, Dheeraj B. Gosala, Gregory M. Shaver, Lisa Farrell, James McCarthy

Research output: Contribution to journalArticlepeer-review

Abstract

Fuel-efficient aftertreatment thermal management in modern diesel engines is a difficult challenge, especially during low-load operation. This study explores the performance of cylinder deactivation in a diesel engine during low-load operation following highway cruise through experimental evaluation of two drive cycles, specifically extended idle and repeated heavy heavy-duty diesel truck creep cycles. Cylinder deactivation operations are shown to maintain comparable aftertreatment thermal management performance to conventional thermal management operation while reducing fuel up to 40% during extended idle operation. This fuel efficiency improvement coincides with engine-out emission reductions of 72% for soot and 52% for NOx. Cylinder deactivation also shows improved thermal management compared to a more fuel-efficient conventional operation.

Original languageEnglish (US)
Pages (from-to)606-615
Number of pages10
JournalInternational Journal of Engine Research
Volume22
Issue number2
DOIs
StateAccepted/In press - 2019
Externally publishedYes

Keywords

  • aftertreatment thermal management
  • Cylinder deactivation
  • diesel
  • drayage
  • extended idle
  • fuel economy
  • heavy heavy-duty diesel truck creep

ASJC Scopus subject areas

  • Automotive Engineering
  • Aerospace Engineering
  • Ocean Engineering
  • Mechanical Engineering

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