The effect of methanol-diesel combustion on performance and emissions of a direct injection diesel engine

• Autorzy: Tutak W. , Szwaja S.

Identyfikatory

DOI

10.5604/12314005.1165449

• Języki publikacji: EN

Abstrakty

EN

The results of CFD modelling a dual fuel diesel engine powered with both methanol and diesel fuel is presented in the paper. Modelling was performed with 20 and a 50% energetic share of methanol in the entire dose. The analysis was conducted on both the thermodynamic parameters and exhaust toxicity of dual fuel engine. It was found that the various share of methanol influences the ignition delay of the combustion process and after start of main phase of combustion, the process occurs faster than in case of the diesel engine. It was found that the time of 10-90% burn of the fuel is much shorter than it is in the diesel engine. The dual fuel engine was characterized by higher indicated mean pressure in the whole range of diesel fuel injection timings. While analysing toxic exhaust emission from the dual fuel engine powered with methanol, it was found that the rate of NO formation was significantly higher than from the diesel engine. The combustion process in the dual fuel engine occurs more rapidly than in the conventional diesel engine, which contributes to form areas with high temperature, and in combination with presence of oxygen from the air and oxygen bonded in the methanol, promotes the NO formation. In the case of the dual fuel engine, it was found that soot emission was reduced. The engine running with diesel injection start at 8.5 deg before TDC, the soot emissions were more than twice lower in the dual fuel engine, while the emission of NO was much higher.

Słowa kluczowe

EN

dual-fuel engine; exhaust emission; modelling; diesel

• Wydawca: Łukasiewicz Research Network - Institute of Aviation ; European Science Society of Powertrain and Transport KONES Poland ; Wydawnictwo Instytutu Technicznego Wojsk Lotniczych
• Czasopismo: Journal of KONES
• Rocznik: 2015
• Tom: Vol. 22, No. 2
• Strony: 259--266
• Opis fizyczny: Bibliogr. 29 poz., rys.

Twórcy

autor

Tutak W.

• Czestochowa University of Technology Institute of Thermal Machinery Armii Krajowej Avenue 21, 42-201 Czestochowa, Poland tel.: [phone]

autor

Szwaja S.

• Czestochowa University of Technology Institute of Thermal Machinery Armii Krajowej Avenue 21, 42-201 Czestochowa, Poland tel.: [phone]

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