The swirl ratio influence on combustion process and heat transfer in the opposed piston compression-ignition engine

• Autorzy: Tulwin T. , Wendeker M. , Czyż Z.

Identyfikatory

DOI

10.19206/CE-2017-301

• Języki publikacji: EN

Abstrakty

EN

In order to maximise engine heat efficiency an engines charge flow must be properly designed -especially its swirl and tumble ratio. A two-stroke compression-ignition opposed piston engine reacts to engine swirl differently compared to a standard automotive engine with axially symmetric combustion chamber. In order to facilitate direct fuel injection, high-pressure injectors must be positioned from the side of combustion chamber. Depending on the combustion chamber geometry the swirling gases impact greatly how the injection stream is formed. If the deformation is too high the high temperature combustion gases can hit the piston surface or get into gaps between the pistons. This greatly affects the heat lost to the pistons and raises their local temperature. More atomised injection stream is more prone to swirling gas flow due to its reduced droplet size and momentum. The paper presents simulation results and analyses for different intake process induced swirl ratios and different types of combustion chambers in an experimental aviation opposed piston engine.

Słowa kluczowe

EN

opposed; two-stroke; combustion; heat; diesel

PL

silnik dwusuwowy; spalanie; ciepło; diesel

• Wydawca: Polskie Towarzystwo Naukowe Silników Spalinowych
• Czasopismo: Combustion Engines
• Rocznik: 2017
• Tom: R. 56, nr 3
• Strony: 3--7
• Opis fizyczny: Bibliogr. 11 poz., wykr.

Twórcy

autor

Tulwin T.

• Faculty of Mechanical Engineering at Lublin University of Technology

autor

Wendeker M.

• Faculty of Mechanical Engineering at Lublin University of Technology

autor

Czyż Z.

• Faculty of Mechanical Engineering at Lublin University of Technology

Bibliografia

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• [7] GAFOOR, A., GUPTA, R. Numerical investigation of piston bowl geometry and swirl ratio on emission from diesel engines. Energy Conversion and Management. 2015, 101, 541-551.
• [8] KOOK, S., KOOK, S., MILES, P.C. et al. The effect of swirl ratio and fuel injection parameters on CO emission and fuel conversion efficiency for high-dilution, low temperature combustion in an automotive diesel engine. SAE Technical Paper. 2006, 2006-01-0197.
• [9] WEI, S., JI, K., LENG, X. et al. Numerical analysis on the effect of swirl ratios on swirl chamber combustion system of DI diesel engines. Energy Conversion and Management. 2013, 75, 184-190.
• [10] SU, L., LI, X., HE, X. LIU, F. Experimental research on the diffusion flame formation and combustion performance of forced swirl combustion system for DI diesel engines. Energy Conversion and Management. 2015, 106, 826-834.
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Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).