The charge cooling effect of methanol was studied and compared to that of iso-octane. The reduction in compression work due to fuel evaporation and the gain in expansion work were evaluated by the means of in-cylinder pressure measurements in a HD CI engine. A single injection strategy was utilized to obtain a longer premixing period to adequately capture the cooling effect. The effect was clear for both tested fuels, however, methanol generally caused the pressure to reduce more than iso-octane near TDC. It was found that the contribution of reduced compression work to the increased net indicated efficiency is negligible. Regarding the expansion work, a slower combustion with higher pressure was obtained for methanol in comparison to that of iso-octane due to the cooling effect of fuel evaporation. As a result from this, a lower heat transfer loss was obtained for methanol, in addition to the significantly lower NOx emissions.
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ASME 2018 Internal Combustion Engine Division Fall Technical Conference
November 4–7, 2018
San Diego, California, USA
Conference Sponsors:
- Internal Combustion Engine Division
ISBN:
978-0-7918-5198-2
PROCEEDINGS PAPER
Quantification and Analysis of the Charge Cooling Effect of Methanol in a Compression Ignition Engine Utilizing PPC Strategy
Burak Zincir,
Burak Zincir
Istanbul Technical University, Tuzla, Turkey
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Pravesh Shukla,
Pravesh Shukla
Lund University, Scania, Sweden
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Pablo Garcia Valladolid,
Pablo Garcia Valladolid
Lund University, Scania, Sweden
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Sebastian Verhelst,
Sebastian Verhelst
Lund University, Scania, Sweden
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Martin Tunér
Martin Tunér
Lund University, Scania, Sweden
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Sam Shamun
Lund University, Scania, Sweden
Burak Zincir
Istanbul Technical University, Tuzla, Turkey
Pravesh Shukla
Lund University, Scania, Sweden
Pablo Garcia Valladolid
Lund University, Scania, Sweden
Sebastian Verhelst
Lund University, Scania, Sweden
Martin Tunér
Lund University, Scania, Sweden
Paper No:
ICEF2018-9657, V001T02A007; 10 pages
Published Online:
January 3, 2019
Citation
Shamun, S, Zincir, B, Shukla, P, Garcia Valladolid, P, Verhelst, S, & Tunér, M. "Quantification and Analysis of the Charge Cooling Effect of Methanol in a Compression Ignition Engine Utilizing PPC Strategy." Proceedings of the ASME 2018 Internal Combustion Engine Division Fall Technical Conference. Volume 1: Large Bore Engines; Fuels; Advanced Combustion. San Diego, California, USA. November 4–7, 2018. V001T02A007. ASME. https://doi.org/10.1115/ICEF2018-9657
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