Diamond derivating coating impact on wearing in combustion engine

International Automotive Conference 2018

Borkowska, J.^1 ; Kamierczak, A.^1

Technical University of Wroclaw, Wyspianskiego Street 27, Wroclaw

50-370, Poland^1

关键词: Antiwear property;    Combustion engines;    Diamond coating;    Endurance test;    Friction coefficients;    Friction force;    Structural elements;    Technology development;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/421/3/032005/pdf
DOI  :  10.1088/1757-899X/421/3/032005

来源: IOP

【 摘 要 】

Piston - ring - cylinder is the typical and simple example of the friction pair that we can find in combustion engine where wearing is one of the main problem. Research on stability of friction pairs are focused on the surface and the top layer of surface in the parts. The main goal is find new solutions in design and materials in order to reduce wearing, which is consistent with the observed trend of technology development. This article presents one of the stages in the research of the newly developed piston ring designed for an internal combustion engine, in which the novelty is an innovative diamond-derivative coating with very good anti-wear properties. Objective of this work was to realize an endurance test in railway engine EMD645 based on rings with diamond coatings and a test of roll-block type on tribotester to set wearing and friction forces of specimen. The super-hard, anti-wear amorphic coatings based on carbon-like diamond show a promising direction in automotive industry, mainly in terms of decreasing friction coefficient in parts of internal combustion engine. The work aims to show the possibilities and benefits of the application of new protective coatings on structural elements.