Hydrogen combustion in the supercharged SI engine

• Autorzy: Grab-Rogaliński K. , Szwaja S.
• Języki publikacji: EN

Abstrakty

EN

The experimental results of combustion pressure processing from a supercharged spark ignition (SI) engine that was running on hydrogen are exposed in the paper. Hydrogen was delivered in two ways by an injector and mixer installed in an intake port. In-cylinder pressure while combusting hydrogen was analyzed with various coefficient of stechiometry and boost pressure. These parameters were limited by abnormal combustion known as "knock" combustion. Hydrogen fueled engine has tendency to generate "knock", especially this abnormal combustion phenomena increases with increase in boosting pressure. Hence, the thermodynamic parameters such as pressure and temperature of fresh air fuel mixture are elevated. The experimental numeric data analysis permit for compare to naturally aspirated engine such parameters as mean indicated pressure, indicated efficiency. Also for both cases, the coefficient of variation for mean indicated pressure was determined. It was found that combustion duration shortens itself with higher boosting pressure. Thus, optimal spark timing to get the maximum indicated mean effective pressure is shifted closer to the TDC. Another parameter that was expected to be increased was the knock intensity. It was observed, that knock intensity did not increase significantly and was still below the limit for pressure pulsations treated as combustion noise coming from light combustion instabilities.

Słowa kluczowe

EN

hydrogen; knock; supercharged engine

• 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: 2012
• Tom: Vol. 19, No. 3
• Strony: 149--155
• Opis fizyczny: Bibliogr. 15 poz., rys.

Twórcy

autor

Grab-Rogaliński K.

autor

Szwaja S.

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

Bibliografia

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