How many rings are available on a single piston?

How many rings are available on a single piston?

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Explanation

3 Piston rings as follows:

  • 1st piston ring:

compression of combustion air or gas mixture and the resulting gas pressure in the combustion cycle, transfer of generated heat to the cylinder surface

  • 2nd piston ring:

support of the remaining gas pressure due to blow-by past the 1st piston ring

  • 3rd piston ring:

scraping of oil