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Usenet Posted 22 years ago
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Crevice/clearance volume?

what's the definition of these two terms. I cannot find it anyway. English certainly isn't my native language and I cannot really understand the difference. Besides I have no broader context, only the sentence:

The crevices volume is calculated to be 0.5% of the clearance volume.

I know that the crevice volume is the one between the piston, piston rings and the cylinder wall, but what is the clearance volume?
  

Top answer

[nq:1]what's the definition of these two terms. I cannot find it anyway. English certainly isn't my native language and I ...

— Usenet

  • [nq:1]what's the definition of these two terms.
  • I cannot find it anyway.
  • English certainly isn't my native language and I ...
  • [/nq] Probably the grooves where the piston rings are seated.
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3 Answers
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[nq:1]what's the definition of these two terms. I cannot find it anyway. English certainly isn't my native language and I ... crevice volume is the one between the piston, piston rings and the cylinder wall, but what is the clearance volume?[/nq]
Probably the grooves where the piston rings are seated.
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[nq:2]what's the definition of these two terms. I cannot find ... and the cylinder wall, but what is the clearance volume?[/nq]
[nq:1]Probably the grooves where the piston rings are seated.[/nq]
Isn't it the volume left when the piston is at TDC?

Mike

M.J.Powell
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[nq:2]Probably the grooves where the piston rings are seated.[/nq]
[nq:1]Isn't it the volume left when the piston is at TDC?[/nq]
I'd say so. See:
http://me.eng.sunysb.edu/~mec417/compressor.pdf
I am not all too clear on a good definition or evaluation of "crevice vol
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