The analysis of friction in the bearing of rocker arms

• Autorzy: Kubiak P. , Siczek K. , Siczek K.

Identyfikatory

DOI

10.5604/12314005.1213597

• Języki publikacji: PL

Abstrakty

EN

Rocker arms are important parts in many valve train systems of combustion engines. They are responsible for translating the profile of the camshaft into motion for opening and closing the inlet and outlet valves. The design, materials and lash adjuster elements for existing rocker arms were discussed. The modified rocker arm bearing was designed for the investigated Benzer 50cc four-stroke engine. The modification for the analysed engine includes the change of bearing for both inlet and outlet rocker arms. The original rocker arm bearing is of the slide type and mates with the axis fixed via the pin to the cylinder head. The modified bearing can be of the needle roller or the slide type and include two bearings mating with the axis, to which the rocker arm is fixed. The aim of the presented study was to obtain the courses of pressure in cylinder against the crankshaft angle, which was needed to calculate the loading force of rocker arm bearing and then friction torque therein. The models of valve train assembly and of the bearing operating under boundary friction were elaborated. Resulted values of the friction torque in rocker arm bearing for different operating conditions of engine were presented in the paper.

Słowa kluczowe

EN

rocker arm; slide bearing; combustion engine; friction

• 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: 2016
• Tom: Vol. 23, No. 2
• Strony: 231--238
• Opis fizyczny: Bibliogr. 25 poz., rys.

Twórcy

autor

Kubiak P.

• Lodz University of Technology Department of Vehicles and Fundamentals of Machine Design Zeromskiego Street 116, 90-924 Lodz, Poland tel.: [phone], fax: [phone]

autor

Siczek K.

• Lodz University of Technology Department of Vehicles and Fundamentals of Machine Design Zeromskiego Street 116, 90-924 Lodz, Poland tel.: [phone], fax: [phone]

autor

Siczek K.

• Lodz University of Technology, Faculty of Electrical, Electronic, Computer and Control Engineering Stefanowskiego Street 18/22, 90-924 Lodz, Poland tel.: [phone], fax: [phone]

Bibliografia

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.