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 language | English (US) |
|---|---|
| Pages (from-to) | 606-615 |
| Number of pages | 10 |
| Journal | International Journal of Engine Research |
| Volume | 22 |
| Issue number | 2 |
| DOIs | |
| State | Published - Feb 2021 |
| Externally published | Yes |
Keywords
- Cylinder deactivation
- aftertreatment thermal management
- diesel
- drayage
- extended idle
- fuel economy
- heavy heavy-duty diesel truck creep
ASJC Scopus subject areas
- Automotive Engineering
- Aerospace Engineering
- Ocean Engineering
- Mechanical Engineering