Evaluation of Pitting Life of Carburized Gears Lubricated by ATF and Traction Oil

Autor:	Tomoya Masuyama, Masashi Yamanaka, Masana Kato, Kunihiko Morikawa, Mikio Nagahara, Katsumi Inoue, Kazuhiko Kishi
Rok vydání:	2001
Předmět:	Engineering Materials science Mechanics of Materials business.industry Mechanical Engineering Metallurgy Traction (engineering) Surface roughness Fatigue testing Geotechnical engineering business Industrial and Manufacturing Engineering Micro pitting
Zdroj:	TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series C. 67:841-846
ISSN:	1884-8354 0387-5024
DOI:	10.1299/kikaic.67.841
Popis:	This paper presents the result of fatigue tests carried out with an ATF and two types of traction oil. Since the performance of these oils as working fluid is preferred, the performance as a lubricant is inferior. The pitting life is evaluated by the value of D computed by the surface roughness and EHL film thickness. The high traction coefficient causes the tooth surface temperature rise by frictional heat, and then the oil film thickness and pitting life are decreased. To evaluate the performance of these oils as lubricants, the tooth surface temperature at the pitting tests is measured and the EHL film thickness is calculated with it for computing the value of D precisely. All results of fatigue test with three types of oils are examined together and it is found out that they are evaluated by the value of D only. The experimental formula to estimate the pitting life is obtained. This procedure is useful to design the surface gear strength of the automotive ATs and CVTs.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::5e749b1ea5612fe963f64c250093dac9 https://doi.org/10.1299/kikaic.67.841 Zobrazit plný text záznamu