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Combustion optimiza...
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Mattarelli, E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
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Combustion optimization of a marine di diesel engine
- Article/chapterEnglish2013
Publisher, publication year, extent ...
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2013-09-08
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400 Commonwealth Drive, Warrendale, PA, United States :SAE International,2013
Numbers
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LIBRIS-ID:oai:research.chalmers.se:930ec8cb-dcc6-4109-903e-44d6835e3258
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https://doi.org/10.4271/2013-24-0020DOI
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https://research.chalmers.se/publication/216424URI
Supplementary language notes
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Language:English
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Summary in:English
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Classification
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Subject category:art swepub-publicationtype
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Subject category:ref swepub-contenttype
Notes
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Enhanced calibration strategies and innovative engine combustion technologies are required to meet the new limits on exhaust gas emissions enforced in the field of marine propulsion and on-board energy production. The goal of the paper is to optimize the control parameters of a 4.2 dm3 unit displacement marine DI Diesel engine, in order to enhance the efficiency of the combustion system and reduce engine out emissions. The investigation is carried out by means of experimental tests and CFD simulations. For a better control of the testing conditions, the experimental activity is performed on a single cylinder prototype, while the engine test bench is specifically designed to simulate different levels of boosting. The numerical investigations are carried out using a set of different CFD tools: GT-Power for the engine cycle analysis, STAR-CD for the study of the in-cylinder flow, and a customized version of the KIVA-3V code for combustion. All the models are calibrated through the above mentioned experimental campaign. Then, CFD simulations are applied to optimize the injection parameters and to explore the potential of the Miller combustion concept. It is found that the reduction of the charge temperature, ensuing the adoption of an early intake valve closing strategy, strongly affects combustion. With a proper valve actuation strategy, an increase of boost pressure and an optimized injection advance, a 40% reduction of NOx emissions can be obtained, along with a significant reduction of in-cylinder peak pressure, without penalizing fuel efficiency.
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Fontanesi, S.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
(author)
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Rinaldini, C.A.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
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Valentino, G.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
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Iannuzzi, S.E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
(author)
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Severi, E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia
(author)
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Golovitchev, Valeri,1945Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)valeri
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Universita Degli Studi Di Modena E Reggio EmiliaChalmers tekniska högskola
(creator_code:org_t)
Related titles
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In:SAE Technical Papers400 Commonwealth Drive, Warrendale, PA, United States : SAE International60148-71912688-3627
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