Study of some Tribological Aspects of the Charging System of an IC Engine

Abstract

The objectives of this paper were focused on the study of wear of the turbocharger, and providing a solution to ascertain friction losses in this equip-ment, because the value of this parameter contributes to pollutant emissions level of the engine. Friction loss in the turbocharger assessed by the driving power losses was considered a parameter to appreciate tribological efficiency of turbochargers. Theoretical studies conducted within the project required a practical validation through the determination of performance parameters, functional parameters and the influencing factors of these parameters. In the first phase it was de-signed a model of the equipment which allows the study of tribological factors on the functional parameters of the turbocharger, the key element being a GT1544 turbocharger coupled to an electric high speed motor. The results show how speed and friction losses change when the outlet pressure of the lubricating system is modified.