Autor: Rodak, W. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Lowering of exhaust emission in modern two - stroke engine
Autorzy:: Mitianiec, W.
Rodak, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/246651.pdf
Data publikacji:: 2012
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
experiments
combustion engines
air pollution
Opis:: In the article the results of experimental tests carried out on the modified SI two-stroke experimental combustion engine with direct fuel injection system and the prototype of the oxidizing catalytic converter are presented. Volumetric exhaust emissions of the most important chemical components are many times smaller than standard limits of gaseous emissions given by EU directive for the new stationary engines applied in non-road vehicles and machines Spark ignition two-stroke engine fitted with a catalytic reactor is characterized by high temperature of exhaust gases, which the energy may be used in cogeneration systems. The paper presents the test stand, volumetric concentration of the main components of exhaust gases, results of converted emissions and fuel consumption as a function of air excess coefficient at chosen rotational speeds together with the assessment of the test results. There is decreasing of CO and HC emission during increasing of air excess coefficient and a strong increase of CO2 behind the catalytic converter. Application of catalytic converter in the outflow system together with direct fuel injection of the tested two-stroke engine enables to achieve values of exhaust emission of main toxic chemical components close to automobile four stroke engines. The paper presents also the comparison of exhaust gas emission of this engine with other engines equipped with different fuelling systems. Presented work is the successor of a wide range of research work in the field of development of modern two-stroke engines carried out in the Cracow University of Technology.
Źródło:: Journal of KONES; 2012, 19, 2; 337-344
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 2.

Tytuł:: Control problems in a turbocharged spark-ignition engine
Autorzy:: Mitianiec, W.
Rodak, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/246107.pdf
Data publikacji:: 2011
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engine
turbocharging
Opis:: The paper presents the problems of adapting of the charge system to the standard four stroke spark ignition engine Toyota Yaris 1300 cm3 with compression ratio 10.5. The main problem in charged spark ignition engine is control of air-fuel ratio near stoichiometric values at different boost pressure in order to obtain higher torque at the same level of specific fuel consumption and exhaust gas emission. Charging of such engine is connected with the problem of knock in the medium and high values of load at low engine speeds. Higher boost pressure leads to abnormal combustion process and to knocking. The paper describes the boost pressure control algorithm which enables to prevent the knock, so the engine can work near the knock boundary. The article includes a description of the engine, the method of charging and test bench, which was built to verify the proposed control algorithm for boost pressure. The publication contains the results of different tests conducted on the supercharged engine stand by the proposed algorithm and measured parameters were torque, fuel consumption and volumetric concentration of the main exhaust gas components. Applying of turbocharger in SI engines leads to knocking. The controlling of combustion process in SI engine is realized on the adjustment of WG or VTG to decrease or increase the rotational speed of turbocharger. Such control causes the engine work near boundary of knocking.
Źródło:: Journal of KONES; 2011, 18, 3; 269-277
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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Skocz do pozycji: 3.

Tytuł:: Experimental investigations in direct injected SI two-stroke engine
Autorzy:: Mitianiec, W.
Forma, M.
Rodak, Ł.
Powiązania:: https://bibliotekanauki.pl/articles/246360.pdf
Data publikacji:: 2010
Wydawca:: Instytut Techniczny Wojsk Lotniczych
Tematy:: transport
combustion engines
direct fuel injection
Opis:: 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.
Źródło:: Journal of KONES; 2010, 17, 2; 335-342
1231-4005
2354-0133
Pojawia się w:: Journal of KONES
Dostawca treści:: Biblioteka Nauki

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