Experimental verification of the model of electrohydraulic drive for internal combustion engine valves

• Autorzy: Szydłowski T.
• Języki publikacji: EN

Abstrakty

EN

The paper presents experimental electrohydraulic valve drive for internal combustion engine. The design is asingle-acting hydraulic actuator with spring return controlled by servovalve. Such solution shouldgive free control of valve lift, valve open and valve close time. In the article the principles of the operation of the drive are described. The paper focuses on exploring the dynamic of experimental electrohydraulic engine valve actuation system working in open-loop. For investigations the mathematical and simulation models were elaborated. The values of unknown coefficients of the models were intercepted on two test stands. First of them served to servovalve research. Second was built on the basis of the prototype drive and let on the research of the dynamics of the all drive. Chosen results of these investigations are placed in the article. The drive was explored for different oil supply pressures, control signals and spring mounting lifts. Experimental dates let to verified dynamic mathematical model. Comparisons of valve lift proceedings obtained from experiments and simulations are presented in the article. Verified model let to execute the analysis of the features of such drive and point necessary modifications for the correct realization of the process of the gas exchange in internal combustion engine.

Słowa kluczowe

EN

camless engine; hydraulic actuator; internal combustion engine; servovalve

• 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: 2009
• Tom: Vol. 16, No. 3
• Strony: 401--408
• Opis fizyczny: Bibliogr. 7 poz., rys.

Twórcy

autor

Szydłowski T.

• Technical University of Lodz, Department of Mechanical Engineering Zeromskiego Street 116, 90-924 Lodz, Poland tel: [phone],fax: [phone],

Bibliografia

• [1] Pawelski, Z., Napęd hybrydowy dla autobusu miejskiego, Monografie Politechniki Łódzkiej 1996.
• [2] Pawelski, Z., Modelowanie i obliczanie napędu hydrobusu, Monografie Politechniki Łódzkiej 2000.
• [3] Stryczek, S., Napęd hydrostatyczny, WNT, Warszawa 1997.
• [4] Szydłowski T., Smoczyński M., Model of hydraulic double acting drive for valves of internal combustion engine, Journal of KONES Powertrain and Transport, Vol. 16, No. 1, pp. 487-494, 2009.
• [5] Tomczyk J., Modele dynamiczne elementów i układów napędów hydrostatycznych, WNT, Warszawa 1999.
• [6] Zbierski, K., Szydłowski, T., Napęd hydrauliczny zaworu rozrządu tłokowego silnika spalinowego. Istota, możliwości, własne koncepcje - cz. I, Napędy i Sterowanie, 10/2007.
• [7] Zbierski, K., Szydłowski, T., Napęd hydrauliczny zaworu rozrządu tłokowego silnika spalinowego. Model i podstawowe parametry napędu jednostronnego działania - cz. II, Napędy i Sterowanie, 7-8/2008.