A Numerical Model for Piston Pin Lubrication in Internal Combustion Engines Massachusetts Institute of Technology

Format:

Book

Conference/Event

Author/Creator:

Meng, Zhen, author.

Contributor:

Lubrecht, Ton

Tian, Tian

Conference Name:

SAE Powertrains, Fuels & Lubricants Meeting (2020-09-22 : Krakow, Poland)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2020

Summary:

As the piston pin works under significant amount of mechanical load, it is susceptible to wear, seizure, and even structural failure, especially in heavy duty internal combustion engines. It has been found that the friction loss associate with the pin is comparable to that from the piston, and can be reduced when the geometry of the piston pin bore is properly modified. However, the reason behind such friction reduction, as well as the approaches towards further improvement, remain unknown. This work develops a piston pin lubrication model capable of evaluating various designs of the relevant engine components. The model simulates the interaction among piston pin, piston pin bore, and connecting rod small end bearing by incorporating dynamics, structural deformation, oil transport, and lubrication theory. It is able to calculate accurately the rotation of the pin, which is crucial to the exchange of oil between the interfaces and the ambient. The model results show that the pin system is not sufficiently lubricated with typical designs of the components, while active sources of lubricant, such as connecting rod oil holes, can lead to more favorable conditions

Notes:

Vendor supplied data

Publisher Number:

2020-01-2228

Access Restriction:

Restricted for use by site license