A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

Abstract

Upcoming CO2 legislation in Europe is driving heavy-duty vehicle manufacturers to develop highly efficient engines more than ever before. Further improvements to conventional diesel combustion, or adopting the reactivity controlled compression ignition concept are both plausible strategies to comply with mandated targets. This work compares these two combustion regimes by performing an optimization on both using Design of Experiments. The tests are conducted on a heavy-duty, single-cylinder engine fueled with either only diesel, or a combination of diesel and gasoline. Analysis of variance is used to reveal the most influential operating parameters with respect to indicated efficiency. Attention is also directed towards the distribution of fuel energy to quantify individual loss channels. A load-speed combination typical for highway cruising is selected given its substantial contribution to the total fuel consumption of long haul trucks. Experiments show that when the intake manifold pressure is limited to levels that are similar to contemporary turbocharger capabilities, the conventional diesel combustion regime outperforms the dual fuel mode. Yet, the latter displays superior low levels of nitrogen oxides. Suboptimal combustion phasing was identified as main cause for this lower efficiency. By leaving the intake manifold pressure unrestricted, reactivity controlled compression ignition surpasses conventional diesel combustion regarding both the emissions of nitrogen oxides and indicated efficiency.

Original languageEnglish
Title of host publicationASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019
PublisherAmerican Society of Mechanical Engineers (ASME)
Number of pages12
ISBN (Electronic)9780791859346
DOIs
Publication statusPublished - 1 Jan 2020
EventASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019 - Chicago, United States
Duration: 20 Oct 201923 Oct 2019

Conference

ConferenceASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019
CountryUnited States
CityChicago
Period20/10/1923/10/19

Fingerprint

Gasoline
Engines
Nitrogen oxides
Ignition
Engine cylinders
Analysis of variance (ANOVA)
Fuel consumption
Design of experiments
Trucks
Display devices
Experiments

Cite this

Willems, R. C., Deen, N. G., Willems, F. P. T., & Somers, L. M. T. (2020). A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC. In ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019 [V001T03A003] American Society of Mechanical Engineers (ASME). https://doi.org/10.1115/ICEF2019-7149
Willems, R.C. ; Deen, N.G. ; Willems, F.P.T. ; Somers, L.M.T. / A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC. ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019. American Society of Mechanical Engineers (ASME), 2020.
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Willems, RC, Deen, NG, Willems, FPT & Somers, LMT 2020, A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC. in ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019., V001T03A003, American Society of Mechanical Engineers (ASME), ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019, Chicago, United States, 20/10/19. https://doi.org/10.1115/ICEF2019-7149

A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC. / Willems, R.C.; Deen, N.G.; Willems, F.P.T.; Somers, L.M.T.

ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019. American Society of Mechanical Engineers (ASME), 2020. V001T03A003.

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

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Willems RC, Deen NG, Willems FPT, Somers LMT. A comparison of low-load efficiency optimization on a heavy-duty engine operated with gasoline-diesel RCCI and CDC. In ASME 2019 Internal Combustion Engine Division Fall Technical Conference, ICEF 2019. American Society of Mechanical Engineers (ASME). 2020. V001T03A003 https://doi.org/10.1115/ICEF2019-7149