Controlling of the work of the high charged SI engines with direct injection of compressed natural gas

• Autorzy: Mitianiec W. , Zioło T. , Kula M.
• Języki publikacji: EN

Abstrakty

EN

In the future many of spark ignition engines will be fuelled by the direct injection of the compressed natural gas. The spark ignition engines fuelled by CNG with lean and stratified charge in a low load mode require much more controlling of the air-fuel ratio than the diesel engines. The paper describes the total problems of the charging of SI engines particularly with direct injection of CNG. The control of the delivered mass of the fuel and the air in order to obtain the required mixture composition is given in mathematical way. The total control system of the engine with turbocharger, the CNG injection system and the model of gas flow in the exhaust and inlet ducts are shown in diagrams with wide work explanation. The paper concerns to the important problems of fuelling of "downsizing "new SI engines in order to fulfil the future exhaust emission requirements. The publication bases partially on the work which was done in the European project. The work was the first approach in order to determine the non-stationary work of the turbocharger in spark ignition engine. Main conclusions of the work are: the pneumatic actuator in the waste-gate system is not suitable in the turbocharged spark ignition engines with direct CNG injection, the pressure and temperature before the turbine and in the inlet pipes fluctuates with not equal values of oscillations, the work was the first approach in order to determine the non-stationary work of the turbocharger in spark ignition engine.

Słowa kluczowe

EN

combustion engines; CNG; turbocharging

• 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: 2007
• Tom: Vol. 14, No. 4
• Strony: 264--272
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Mitianiec W.

autor

Zioło T.

autor

Kula M.

• Cracow University of Technology Al. Jana PawlaII37, 31-864 Krakow, Poland tel: [phone], fax: [phone],

Bibliografia

• [1] Heywood, J. B., Internal Combustion Engine Fundamentals, Mc Graw-Hill, 1988.
• [2] Wajand, J.A., Wajand, J.T., Tłokowe silniki spalinowe średnio- i szybkoobrotowe, WNT, Warszawa, 1997.
• [3] Mitianiec, W., Jaroszewski, A., Modele matematyczne procesów fizycznych w silnikach spalinowych małej mocy, Ossolineum, Wroclaw-Warszawa-Krakow, 1993.
• [4] GT-POWER Tutorials, version 6.2, Gamma Technologies, Westmont, USA, 2006.
• [5] Automotive Handbook, Robert Bosch Gmbh, Stuttgart, 1996.
• [6] Wisłocki, K., Systemy doładowania szybkoobrotowych silników spalinowych, WkiŁ, Warszawa, 1998.
• [7] Arbogast, J., Cooper, D., Rice, R., Model-Based Tuning Methods for PID Controllers, Control Station Inc., Tolland USA, 2004.