1. Amandla
Imikhosi esebenza kwindandatho yepiston ibandakanya uxinzelelo lwegesi, i-elastic force ye-ring ngokwayo, i-inertial force ye-reciprocating force ye-ring, i-friction force phakathi kwe-ring kunye ne-cylinder kunye ne-groove ye-ring, njengoko kubonisiwe kumfanekiso. Ngenxa yale mikhosi, i-ring iya kuvelisa iintshukumo ezisisiseko ezifana ne-axial movement, i-radial movement, kunye nokunyakaza okujikelezayo. Ukongeza, ngenxa yeempawu zayo zokuhamba, kunye nokunyakaza okungaqhelekanga, iringi yepiston ibonakala idada kunye ne-axial vibration, i-radial irregular movement kunye ne-vibration, intshukumo ejijekileyo ebangelwa yi-axial irregular movement. Ezi ntshukumo zingaqhelekanga zihlala zithintela iringi yepiston ekusebenzeni. Xa uyila i-piston ring, kuyimfuneko ukunika umdlalo opheleleyo kwintshukumo efanelekileyo kunye nokulawula icala elingathandekiyo.

2. I-Thermal conductivity
Ubushushu obuphezulu obuveliswa kukutsha bugqithiselwa eludongeni lwesilinda ngeringi yepiston, ngoko inokupholisa ipiston. Ubushushu obuchithwe eludongeni lwesilinda ngeringi yepiston bunokufikelela ngokubanzi kwi-30-40% yobushushu obufunxwa ngasentla kwepiston.

3. Ukuxinana komoya
Umsebenzi wokuqala weringi yepiston kukugcina itywina phakathi kwepiston kunye nodonga lwesilinda, kunye nokulawula ukuvuza komoya kubuncinci. Le nxaxheba ikakhulu ithwalwa yindandatho yegesi, oko kukuthi, ukuvuza komoya ocinezelweyo kunye negesi ye-injini kufuneka ilawulwe ubuncinci phantsi kwayo nayiphi na imeko yokusebenza ukuphucula ukusebenza kakuhle kwe-thermal; ukuthintela isilinda kunye nepiston okanye i-cylinder kunye neringi ekubeni ibangelwa kukuvuza komoya Ukuxhuzula; ukuthintela ukungasebenzi kakuhle okubangelwa kukonakala kweoyile yokuthambisa.

4. Ulawulo lweoli
Umsebenzi wesibini wendandatho yepiston kukukhupha ngokufanelekileyo ioli yokuthambisa efakwe eludongeni lwesilinda kunye nokugcina ukusetyenziswa kweoli eqhelekileyo. Xa ukunikezelwa kweoli yokuthambisa kuninzi kakhulu, kuya kuxutywa kwigumbi lokutshisa, eliya kwandisa ukusetyenziswa kwamafutha, kwaye idiphozithi yekhabhoni eveliswa ngokutshiswa iya kuba nefuthe elibi kakhulu ekusebenzeni kweenjini.

5. Ukuxhasa
Ngenxa yokuba ipiston incinci kune-diameter yangaphakathi ye-cylinder, ukuba akukho msesane wepiston, ipiston ayizinzanga kwi-cylinder kwaye ayikwazi ukuhamba ngokukhululekile. Ngelo xesha, i-ring kufuneka ithintele i-piston ukuba iqhagamshelane ngqo ne-cylinder, kwaye idlale indima exhasayo. Ke ngoko, iringi yepiston ihla inyuka inyuka kwi-cylinder, kwaye indawo yayo etyibilikayo ithwalwa ngokupheleleyo ngumsesane.