Naslov
Experimental Study of Methane Fuel Oxycombustion in an SI Engine

Autori
Van Blarigan, Andrew ; Kozarac, Darko ; Seiser, Reinhard ; Chen, Jyh-Yuan ; Cattolica, Robert ; Dibble, Robert

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the ASME 2012 Internal Combustion Engine Division Fall Technical Conference ICEF2012 / - : American Society of Mechanical Engineers (ASME), 2013

Skup
ASME 2012 Internal Combustion Engine Division Fall Technical Conference ICEF2012

Mjesto i datum
Vancouver, Kanada, 23.09.2012. - 26.09.2012

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
Oxy-combustion; performance; Methane

Sažetak
An experimental investigation of the thermal efficiency, combustion efficiency, and CoV IMEP, of methane fuel oxycombustion in an SI engine has been carried out. Compression ratio, spark-timing, and oxygen concentration were all varied. A variable compression ratio SI engine was operated on both wet and dry EGR working fluids, with results illustrating that the efficiency of the engine operating with a large amount of EGR was significantly reduced relative to methane-in-air operation over all oxygen concentrations and compression ratios. The maximum thermal efficiency of wet EGR, dry EGR, and air was found to be 23.6%, 24.2%, and 31.4%, respectively, corresponding to oxygen volume fractions of 29.7%, 32.7% and 21%. Combustion efficiency was above 98% for wet EGR and approximately 96% for dry EGR. CoV IMEP was low for both cases. The much higher efficiency of air relative to both EGR cases is primarily a result of the reduced specific-heat ratio of the EGR working fluids relative to air working fluid.

Izvorni jezik
Engleski

Znanstvena područja
Strojarstvo

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