Piston mhete basa rinosanganisira kuvhara, kudzora mafuta (kudzora mafuta), kupisa conduction (kupisa kupisa), kutungamira (rutsigiro) mabasa mana. Kuisa chisimbiso: kunoreva kuisa chisimbiso gasi, usarega kamuri yekupisa gasi ichidonha kune crankcase, iyo gasi kuvuza kunodzorwa zvishoma, kunatsiridza kupisa kwekupisa. Kubuda kwemhepo hakuzongodzikisi simba rejini, asiwo kuita kuti mafuta awedzere, iro ndiro basa guru remhete yegesi; Gadzirisa mafuta (oiri kutonga): iyo yakawandisa mafuta ekuzora pamadziro ecylinder inobviswa, uye cylinder madziro akafukidzwa nemafuta akaonda firimu kuti ave nechokwadi chekuzora kwakajairika kwecylinder uye piston uye mhete, rinova iro basa guru re mhete yemafuta. Mune injini dzemazuva ano dzepamusoro-soro, kunyanya kukoshesa kunobhadharwa kune basa repiston ring control oil film; Heat conduction: kupisa kwepiston kunoendeswa kune cylinder liner kuburikidza nemhete yepiston, kureva, iyo inotonhorera. Zvinoenderana nedatha yakavimbika, 70 ~ 80% yekupisa yakagamuchirwa nepiston kumusoro kwepiston isina kunyungudutswa inoparadzirwa kuburikidza nepiston mhete kumadziro ecylinder, uye 30 ~ 40% yepiston inotonhorera inoparadzirwa kuburikidza nepiston mhete kune cylinder. wall; Tsigiro: Mhete yepiston inochengeta piston mucylinder, inodzivirira kusangana kwakananga pakati pepiston uye cylinder madziro, inova nechokwadi chekufamba kwakanaka kwepiston, inoderedza kupokana, uye inodzivirira piston kugogodza silinda. Kazhinji, piston yeinjini yepeturu inoshandisa mhete mbiri dzegasi uye mhete imwe yemafuta, nepo injini yedhiziri inowanzoshandisa zvindori zviviri zvemafuta uye mhete imwe yegasi.