piston skirt expander

piston skirt expander
A spring device placed inside the piston skirt to produce an outward pressure which increases the diameter of the skirt.

Dictionary of automotive terms. 2015.

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  • skirt expander — See piston skirt expander …   Dictionary of automotive terms

  • piston skirt expanding — Enlarging the diameter of the piston skirt by inserting an expander, by knurling the outer skirt surface, or by peening the inside of the piston …   Dictionary of automotive terms

  • expander — [1] A ring placed under a piston ring to increase ring pressure on the cylinder walls. For instance an oil control ring may have an expander ring to assist the oil control ring to scrape oil off the cylinder wall and provide further sealing. See… …   Dictionary of automotive terms

  • Piston ring — A piston ring is an open ended ring that fits into a groove on the outer diameter of a piston in a reciprocating engine such as an internal combustion engine or steam engine. The three main functions of piston rings in reciprocating engines are:# …   Wikipedia

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