Experimental investigations in direct injected SI two-stroke engine

• Autorzy: Mitianiec W. , Forma M. , Rodak Ł.
• Języki publikacji: EN

Abstrakty

EN

The paper presents the latest experimental results of smali power two-stroke engine with electronic controlled high pressure direct fuel injection. The work is one of the first solutions in such engines in Poland and was provided on industrial engine with capacity 115 cm3. A special experimental eąuipment and electronic control of fuel dose and injection phases enables to obtain a big decrease of specific fuel consumption and exhaust gas emission, particularly hydrocarbons with the same level of torque. Applying of direct injection in small power two-stroke engine gives possibility tofulfil exhaust emission reguirements. The paper presents the experimental stand and fuel injection system with results of main engine parameters and emission of chosen chemical components. The configuration of injection system was designed on the basis of previous simulation test in GT-Power and KIVA3V. Earlier fuel injection influences on better evaporation and mixture formation with small stratification, which enables full mixture combustion. Direct fuel injection in two-stroke engine decreases hydrocarbon emission 10 times and specific fuel consumption about 30% in comparison to carburetted engine. Exhaust gas emission is on level off our stroke engines with low emission of NOx. The engine was equipped with conventional automotive injector, which was not suited to small cylinder capacity. . On the basis of the simulations and experimental tests a main conclusion can be drawn, that the spray guided direct fuel injection is a way to obtain cleaner and more effective two-stroke engine for small power units.

Słowa kluczowe

EN

transport; combustion engines; direct fuel injection

• 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: 2010
• Tom: Vol. 17, No. 2
• Strony: 335--342
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Mitianiec W.

autor

Forma M.

autor

Rodak Ł.

• Cracow Unversity of Technology Jana Pawla II Av. 37, 31-864 Kraków, Poland tel: [phone]; Fax: [phone],

Bibliografia

• [1] Amsden, A. A. et al, KIVA: A Computer Program for Two- and Three-Dimensional Fluid Flows with Chemical Reactions and Fuel Sprays, Rept. LA-10245-MS, 1985.
• [2] Fansler, T., French, D., Drake, M., Individual-Cycle Measurements of Exhaust-Hydrocarbon Mass from a Direct-Injection Two-Stroke Engine, SAE 980758, SAE Congress&Exposition, Detroit 1998.
• [3] Ikeda, Y., Nakajima, T., Kurihara, N., Spray Formation of Air-Assist Injection for Two-Stroke Engine, SAE Paper 950271, SAE Int. Congress & Exposition, Detroit 1995.
• [4] Mitianiec, W., Wtrysk paliwa w silnikach dwusuwowych małej mocy, Polska Akademia Nauk, Kraków 1999.
• [5] Mitianiec, W., Forma, M., Simulation and experimental test of spray guided direct fuel injection in a two-stroke engine, Combustion Engines, 2009-SC2, PTNSS-2009-SC-43, pp. 105-112, Bielsko-Biała 2009.
• [6] Mitianiec, W., Forma, M., Influence of charge motion on spray guided direct fuel injection in small power two-stroke engine, 12th EAEC European Automotive Congress, No. 01-017, Bratislava 2009.
• [7] Nuti, M., Pardini, R., Twenty Years of Piaggio Direct Injection Research to Mass Produced Solution for Small 2T SI Engines, SAE 980760, SAE Congress&Exposition, Detroit 1998.