Effect of elevated coolant temperature on the exhaust composition of piston internal - combustion engine

• Autorzy: Krakowski R.
• Języki publikacji: EN

Abstrakty

EN

There is a tendency to increase the economic efficiency of engine operation and energy efficiency and reduce emissions of toxic combustion products. One way to reduce emissions of toxic components in exhaust gases is raising the coolant boiling point, which requires the simultaneous increase in pressure in the cooling system. Previous studies suggest that such a system can reduce the amount of toxic components in exhaust gases, particularly at low engine load when the engine exhaust temperature is too low to make effective catalytic action. The paper presents the model and experimental test stands to research the cooling system at an elevated temperature of the coolant. The speed and load characteristics of the standard cooling systems and pressure were presented. The research results were designed to determine the effect of elevated temperature in the cooling system on the composition of the gases. The characteristics of the external speed and load were performed with standard cooling systems and pressure. When performing velocity characteristics of the engine was loaded up in the whole range of engine speed from 1000 to 4000 rev/min, while the load characteristics were performed for different values of torque at constant speed in the range from 1500-4000 rpm. The results confirmed the benefits of increasing the temperature of the coolant. The presented characteristics that apply pressure cooling system reduces the amount of toxic components in exhaust gases, particularly at low engine load, in which the engine operates most often in urban conditions.

Słowa kluczowe

EN

combustion engines; engine cooling; exhaust emissions; air pollution; environmental protection

• 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. 2
• Strony: 263--270
• Opis fizyczny: Bibliogr. 11 poz., rys.

Twórcy

autor

Krakowski R.

• Faculty of Marine Engineering Morska Street 83, 81-225 Gdynia, Poland tel.: [phone],

Bibliografia

• [1] Bernhardt, M., Dobrzyński, S., Loth, E., Silniki samochodowe, WKiŁ, Warszawa 1988.
• [2] Bielaczyc, P., Merkisz, J., Pielucha, J., Stan cieplny silnika spalinowego a emisja związków szkodliwych, Wydawnictwo Politechniki Poznańskiej, Poznań 2001.
• [3] Cortona, E., Onder, Ch. H., Engine thermal management with electric cooling pump, SAE Technical Paper Series, 2000-01-0965.
• [4] Kneba, Z., Kompleksowy model nowej generacji układu chłodzenia silnika spalinowego, Silniki spalinowe, SC1, pp. 160-169, Bielsko-Biała 2007.
• [5] Krakowski, R., Walentynowicz, J., Wpływ podwyższonej temperatury płynu chłodzącego na działanie układu chłodzenia tłokowego silnika spalinowego, Światowy Zjazd Inżynierów Polskich, Warszawa 2010.
• [6] Luft, S., Podstawy budowy silników, WKŁ, Warszawa 2006.
• [7] Merkisz, J., Wpływ motoryzacji na skażenie środowiska naturalnego, Wydawnictwo Politechniki, Poznań 1994.
• [8] Ogrodzki, A., Chłodzenie trakcyjnych silników spalinowych, WKŁ, Warszawa 1974.
• [9] Principles of engine cooling systems, components and maintenance, SAE HS-40.
• [10] Wajand, J. A., Wajand, J. T., Tłokowe silniki spalinowe średnio - i szybkoobrotowe, WNT, Warszawa 1993.
• [11] Walentynowicz, J., Influence of the Cooling Liquid Temperature on the Piston Combustion Engine Parameters, Journal of KONES, 2009.