Abstract
A design of experiments and regression analysis are used to investigate the influence of engine operating conditions on post-injection efficacy. The study targets emissions of engine-out soot and NOx, as well as fuel economy and is performed on a typical heavy-duty diesel engine at a relatively low load. The regression models indicate the presence of a strong correlation between available oxygen, reduction in engine-out soot and optimal post-injection scheduling. This observation strengthens the suggestion that enhanced late-cycle mixing of fuel and oxidizer is an important contributor to the soot reduction capabilities of post-injections. Decrements in both NOx emissions and fuel consumption are established for a particular post-injection scheme, although an intricate synergy with EGR rate was found, emphasizing the importance of careful scheduling of a post-injection event.
Original language | English |
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Title of host publication | 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia |
Pages | 1088-1093 |
Number of pages | 6 |
Publication status | Published - 18 Apr 2017 |
Event | 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia - Dubrovnik, Dubrovnik, Croatia Duration: 18 Apr 2017 → 21 Apr 2017 http://www.adriacombustioninstitute.org/ecm2017/ |
Conference
Conference | 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia |
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Abbreviated title | ECM 2017 |
Country/Territory | Croatia |
City | Dubrovnik |
Period | 18/04/17 → 21/04/17 |
Internet address |