Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments

R.C. Willems, R. Dreezen, P.C. Bakker, L.M.T. Somers

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

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.
LanguageEnglish
Title of host publication8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia
Pages1088-1093
Number of pages6
StatePublished - 18 Apr 2017
Event8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia - Dubrovnik, Dubrovnik, Croatia
Duration: 18 Apr 201721 Apr 2017
http://www.adriacombustioninstitute.org/ecm2017/

Conference

Conference8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia
Abbreviated titleECM 2017
CountryCroatia
CityDubrovnik
Period18/04/1721/04/17
Internet address

Fingerprint

Soot
Design of experiments
Diesel engines
Engines
Scheduling
Fuel economy
Fuel consumption
Regression analysis
Oxygen

Cite this

Willems, R. C., Dreezen, R., Bakker, P. C., & Somers, L. M. T. (2017). Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments. In 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia (pp. 1088-1093)
Willems, R.C. ; Dreezen, R. ; Bakker, P.C. ; Somers, L.M.T./ Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments. 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia. 2017. pp. 1088-1093
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title = "Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments",
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.",
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year = "2017",
month = "4",
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booktitle = "8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia",

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Willems, RC, Dreezen, R, Bakker, PC & Somers, LMT 2017, Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments. in 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia. pp. 1088-1093, 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia, Dubrovnik, Croatia, 18/04/17.

Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments. / Willems, R.C.; Dreezen, R.; Bakker, P.C.; Somers, L.M.T.

8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia. 2017. p. 1088-1093.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademic

TY - GEN

T1 - Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments

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AU - Dreezen,R.

AU - Bakker,P.C.

AU - Somers,L.M.T.

PY - 2017/4/18

Y1 - 2017/4/18

N2 - 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.

AB - 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.

M3 - Conference contribution

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Willems RC, Dreezen R, Bakker PC, Somers LMT. Effects of post-injections on diesel engine emissions and efficiency at low load using design of experiments. In 8th European Combustion Meeting (ECM 2017), April 18-21, Dubrovnik, Croatia. 2017. p. 1088-1093.