Analysis of Con-Rod Big-End Bearing Lubrication on the Basis of Oil Supply Rate Toyota Central Research and Development Labs., Incorporated

Format:

Conference/Event

Author/Creator:

Suzuki, Shigeo, author.

Conference Name:

International Fall Fuels & Lubricants Meeting & Exposition (1998-10-19 : San Francisco, California, United States)

Language:

English

Physical Description:

1 online resource

Place of Publication:

Warrendale, PA SAE International 1998

Summary:

The purpose of this study is to analyze con-rod bearing lubrication under reduced oil supply rate conditions. An engine was modified to measure the oil supply rate to a con-rod big-end bearing. Then the effects of the oil supply rate on bearing temperatures and the contact between a journal and a bearing were investigated in order to analyze lubrication characteristics. The bearing temperatures increased in accordance with reduced oil supply rate. On the other hand, the contact frequency hardly changed under almost all conditions, but steeply increased near one-third of the standard oil supply rate at the highest speed of 5000 rpm in the experiments. The results show that the reduced oil supply rate decreases the cooling effect but the hydrodynamic lubrication was sufficiently achieved except the above-mentioned severe condition. From the observation using a transparent bearing and a theoretical calculation, the reason of the above results was estimated that the oil flowing out of the bearing ends is sucked again into the bearing near a cavitation region

Notes:

Vendor supplied data

Publisher Number:

982439

Access Restriction:

Restricted for use by site license