Combustion optimization of a marine di diesel engine

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Mattarelli, E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)

Combustion optimization of a marine di diesel engine

Article/chapterEnglish2013

Publisher, publication year, extent ...

2013-09-08
400 Commonwealth Drive, Warrendale, PA, United States :SAE International,2013

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LIBRIS-ID:oai:research.chalmers.se:930ec8cb-dcc6-4109-903e-44d6835e3258
https://doi.org/10.4271/2013-24-0020DOI
https://research.chalmers.se/publication/216424URI

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Language:English
Summary in:English

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SwePubSwePub

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Subject category:art swepub-publicationtype
Subject category:ref swepub-contenttype

Notes

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.

Subject headings and genre

TEKNIK OCH TEKNOLOGIER Maskinteknik Energiteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Energy Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Maskinteknik Farkostteknik hsv//swe
ENGINEERING AND TECHNOLOGY Mechanical Engineering Vehicle Engineering hsv//eng
TEKNIK OCH TEKNOLOGIER Elektroteknik och elektronik Reglerteknik hsv//swe
ENGINEERING AND TECHNOLOGY Electrical Engineering, Electronic Engineering, Information Engineering Control Engineering hsv//eng
Combustion technology
Injection parameters
Combustion optimization
Experimental activities
Ship Propulsion
Engine-out emissions
Intake valve closings
Experimental campaign
Numerical investigations

Added entries (persons, corporate bodies, meetings, titles ...)

Fontanesi, S.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)
Rinaldini, C.A.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)
Valentino, G.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)
Iannuzzi, S.E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)
Severi, E.Universita Degli Studi Di Modena E Reggio Emilia,University of Modena and Reggio Emilia (author)
Golovitchev, Valeri,1945Chalmers tekniska högskola,Chalmers University of Technology(Swepub:cth)valeri (author)
Universita Degli Studi Di Modena E Reggio EmiliaChalmers tekniska högskola (creator_code:org_t)

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In:SAE Technical Papers400 Commonwealth Drive, Warrendale, PA, United States : SAE International60148-71912688-3627

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ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Energy Engineeri ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Mechanical Engin ...; and Vehicle Engineer ...

ENGINEERING AND TECHNOLOGY: ENGINEERING AND ...; and Electrical Engin ...; and Control Engineer ...

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