1. Mphamvu
Mphamvu zomwe zimagwira pa mphete ya pisitoni zimaphatikizapo kuthamanga kwa mpweya, mphamvu yotanuka ya mpheteyo yokha, mphamvu yosasunthika ya kayendedwe ka mpheteyo, mphamvu yotsutsana pakati pa mphete ndi silinda ndi ring groove, monga momwe chithunzichi chikusonyezera. Chifukwa cha mphamvu izi, mpheteyo idzatulutsa mayendedwe oyambira monga axial movement, radial movement, and rotational movement. Kuphatikiza apo, chifukwa cha mawonekedwe ake oyenda, komanso kusuntha kosakhazikika, mphete ya pisitoni imawoneka ikuyandama komanso kugwedezeka kwa axial, kusuntha kosakhazikika komanso kugwedezeka, kupotoza kusuntha komwe kumachitika chifukwa chakuyenda kosakhazikika kwa axial. Kusuntha kosakhazikika kumeneku nthawi zambiri kumalepheretsa mphete ya pistoni kugwira ntchito. Popanga mphete ya pistoni, ndikofunikira kupereka kusewera kwathunthu kumayendedwe abwino ndikuwongolera mbali yoyipa.

2. Thermal conductivity
Kutentha kwakukulu komwe kumapangidwa ndi kuyaka kumatumizidwa ku khoma la silinda kudzera pa mphete ya pistoni, kotero imatha kuziziritsa pisitoni. Kutentha komwe kumachokera pakhoma la silinda kudzera pa mphete ya pistoni kumatha kufika 30-40% ya kutentha komwe kumatengedwa pamwamba pa pisitoni.

3. Kuthina kwa mpweya
Ntchito yoyamba ya mphete ya pistoni ndikusunga chisindikizo pakati pa pisitoni ndi khoma la silinda, ndikuwongolera kutulutsa mpweya pang'ono. Ntchitoyi imayendetsedwa makamaka ndi mphete ya gasi, ndiko kuti, kutayikira kwa mpweya woponderezedwa ndi mpweya wa injini kuyenera kuyendetsedwa pang'onopang'ono pansi pazikhalidwe zilizonse zogwirira ntchito kuti zikhale bwino; kuteteza silinda ndi pisitoni kapena silinda ndi mphete kuti zisayambitsidwe ndi kutuluka kwa mpweya Kugwidwa; kuletsa kuwonongeka komwe kumachitika chifukwa cha kuwonongeka kwa mafuta opaka mafuta.

4. Kuwongolera mafuta
Ntchito yachiwiri ya mphete ya pisitoni ndikuchotsa bwino mafuta opaka omwe amamangiriridwa pakhoma la silinda ndikusunga mafuta abwinobwino. Mafuta opaka mafuta akachuluka, amalowetsedwa m'chipinda choyaka moto, chomwe chidzawonjezera mafuta, ndipo gawo la kaboni lopangidwa ndi kuyaka lidzakhala ndi vuto lalikulu pakuchita kwa injini.

5. Kuthandiza
Chifukwa pisitoni ndi yaying'ono pang'ono kuposa kukula kwa mkati mwa silinda, ngati palibe mphete ya pistoni, pisitoniyo imakhala yosakhazikika mu silinda ndipo simatha kuyenda momasuka. Panthawi imodzimodziyo, mpheteyo iyenera kulepheretsa pisitoni kuti isagwirizane ndi silinda, ndikugwira ntchito yothandizira. Choncho, mphete ya pisitoni imayenda mmwamba ndi pansi mu silinda, ndipo pamwamba pake yotsetsereka imatengedwa ndi mpheteyo.