The Investigation of the Tribological Behaviour of Several Friction Modifier Lubricant Additives

Abstract

In modern vehicle and engine development one of the most important improvement tendencies is to increase the fuel efficiency of internal combustion engines. One of these possibilities is decreasing the frictional losses of engines, which can be achieved by decreasing the viscosity of lubricants used in engines (ultra-low-viscosity) and the usage of various additives in the lubricants. To choose the right type of additives and their concentrations, tribological investigation of these lubricants is necessary. In this article the investigation of the tribological behaviour of the chosen friction-modifier (FM) additives on several surface materials is published. The additives were investigated with several tribometers and with the use of self-developed test methods in the Department of Internal Combustion Engines at the Széchenyi István University in Győr. The lubricant probes used for the tribological investigations are made in the lubricant laboratory of MOL-Lub Ltd.