Rotation of piston rings

Monday, August 18, 2014
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Piston rings lead a much more active life than might be thought. While we usually imagine that they only reciprocate in a motion defined by the piston, they also rotate during service. Such rotation has been the subject of many experiments and studie... read more
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New structural concepts

Thursday, May 08, 2014
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There has been a great deal of evolution in piston design over the years, in which a large number of usually small development steps have given us some really beautiful components. If we are to describe a modern racing piston, we would probably be sa... read more
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Variations in piston structure

Thursday, March 27, 2014
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The piston is at the heart of the reciprocating internal combustion engine – it draws in the fresh charge, helps to expel the burnt combustion products and forms an important part of the combustion chamber itself, fundamentally affecting flow a... read more
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How many rings to use?

Wednesday, February 19, 2014
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If we look at sectioned drawings of some old piston engines, we might be able to count many more piston rings being used per piston than we would find these days. We might see multiple rings placed above the piston pin (as we would find now) but thes... read more
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Pin bores

Wednesday, January 08, 2014
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I’m sure someone will argue a different point of view, but my opinion is that the piston is probably the single most demanding component in an engine in terms of detailed design. There is so much at stake in terms of performance if the piston i... read more
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DLC coatings

Monday, December 02, 2013
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Diamond-like carbon, the initials of which are used to describe the ubiquitous DLC coating, has found very wide acceptance in motorsport, especially in engines. Initially, it was suitable only for steels with relatively high tempering temperatures &n... read more
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