Analysis of the ignition control in the HCCI system using dose of monoatomic inert gas

• Autorzy: Postrzednik S. , Przybyła G. , Żmudka Z.
• Języki publikacji: EN

Abstrakty

EN

The subject of the analysis presented in the paper is the idea and implementation method of the ignition point of homogeneous air-fuel mixture, used in the IC engine with HCCI system. Autoignition of the combustible mixture can occur only upon reaching the characteristic self-ignition temperature Tz. It should take place during (near end) the load compression. In order to achieve the fuel mixture ignition temperature Tz in the system, usually it is proposed adjusting the engine compression ratio, epsilon. However, it is quite cumbersome especially in case of frequent changes of engine load (there are also difficulties with the precise advance angle adjusting of fuel mixture ignition). According to our conception, the other method of autoignition adjustment can be successfully applied. The essence of the new idea consists in proper selection, according to engine load, of the exponent k of charge polytropic compression. Introducing the defined dose of monoatomic gas (e.g. argon Ar,k almost equal 1.667) to air-fuel mixture, the higher values of the polytropic compression exponent .. of working medium can be achieved. It will result in significant increase of the temperature rise Delta Tmax of the compressed charge and accordingly progressive increase of the advance angle of the mixture ignition.

Słowa kluczowe

EN

IC engine; HCCI system; ignition control; charge compression

• 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. 1
• Strony: 319--326
• Opis fizyczny: Bibliogr. 6 poz., rys.

Twórcy

autor

Postrzednik S.

autor

Przybyła G.

autor

Żmudka Z.

• Silesian University of Technology Institute of Thermal Technology Konarskiego Street 22, 44-100 Gliwice, Poland tel.: [phone], fax: [phone],

Bibliografia

• [1] Ferguson, C. R., Internal Combustion Engines, Applied Thermo-Sciences, John Wiley & Sons, Inc., 1986.
• [2] Hany, A., Mohsen, A., Selim, A., Osama, A., NOx emission control in SI engine by adding argon inert gas to intake mixture, Energy Conversion and Management 50, pp. 2699–2708, 2009.
• [3] Johansson, R., Blom, D., Karlsson, M., Ekholm, K., Tunestal, P., HCCI Engine Modelling and Control using Conservation Principles, Society of Automotive Engineers, 01, p. 0789, 2008.
• [4] Merkisz, J., Ekologiczne aspekty stosowania silników spalinowych, Wydawnictwo Politechniki Poznańskiej, Poznań 1994.
• [5] Postrzednik, S., Żmudka, Z., Termodynamiczne oraz ekologiczne uwarunkowania eksploatacji tłokowych silników spalinowych, Wydawnictwo Politechniki Śląskiej, Gliwice 2007.
• [6] Postrzednik, S., Żmudka, Z., Eksploatacyjne uwarunkowania wykorzystania eko-obiegu silnika spalinowego, IV. International Congress on Combustion Engines, PTNSS, 2011-SC-099.