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Some Aspects of Engine Wear

Some Aspects of Engine Wear OF all modern engineering constructions, it is difficult to imagine a unit the components of which are more liable to general wear than the presentday internal combustion and compression ignition engines. The performances demanded of aeroengines in particular, have instigated the enormous amount of research and investigation that has been made on the problem of reducing metallic wear under various conditions of temperature, load, atmosphere, etc. The importance of this problem is manifest when one reflects that the great majority of the components of the aeroengine with the exception of details, nuts, bolts, pins, etc. are subject to continual wear in one form or another. In other words, the serviceable life of any engine is largely a function of the degree to which particular forms of wear have been minimized. While the question of adequate lubrication is undoubtedly of vital importance in reducing friction, the primary causes of wear are dependent upon the properties and surface conditions of the materials at their respective working temperatures. For the majority of components, the selection of material must necessarily be mainly decided by such considerations as yield point, compression strength, fatigue range, specific tenacity, maximum stress, resistance to scaling, thermal expansion, etc., and the question of wear is reckoned rather as a problem for which the metallurgist will find a treatment which can be suitably applied to the material. Thus we have seen evolved the many processes for surfacehardening, and numerous antifriction materials, etc. It is interesting to review the present position of the practical applications of the science of reducing metallic friction, and to note tendencies of future developments. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Aircraft Engineering and Aerospace Technology Emerald Publishing

Some Aspects of Engine Wear

Jackson, H.H.
Aircraft Engineering and Aerospace Technology , Volume 11 (5): 13 – May 1, 1939
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Publisher
Emerald Publishing
Copyright
Copyright © Emerald Group Publishing Limited
ISSN
0002-2667
DOI
10.1108/eb030481
Publisher site
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Abstract

OF all modern engineering constructions, it is difficult to imagine a unit the components of which are more liable to general wear than the presentday internal combustion and compression ignition engines. The performances demanded of aeroengines in particular, have instigated the enormous amount of research and investigation that has been made on the problem of reducing metallic wear under various conditions of temperature, load, atmosphere, etc. The importance of this problem is manifest when one reflects that the great majority of the components of the aeroengine with the exception of details, nuts, bolts, pins, etc. are subject to continual wear in one form or another. In other words, the serviceable life of any engine is largely a function of the degree to which particular forms of wear have been minimized. While the question of adequate lubrication is undoubtedly of vital importance in reducing friction, the primary causes of wear are dependent upon the properties and surface conditions of the materials at their respective working temperatures. For the majority of components, the selection of material must necessarily be mainly decided by such considerations as yield point, compression strength, fatigue range, specific tenacity, maximum stress, resistance to scaling, thermal expansion, etc., and the question of wear is reckoned rather as a problem for which the metallurgist will find a treatment which can be suitably applied to the material. Thus we have seen evolved the many processes for surfacehardening, and numerous antifriction materials, etc. It is interesting to review the present position of the practical applications of the science of reducing metallic friction, and to note tendencies of future developments.

Journal

Aircraft Engineering and Aerospace Technology – Emerald Publishing

Published: May 1, 1939

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