Iyo piston yeinjini yemotokari ndechimwe chezvikamu zvikuru zveinjini, iyo nemhete yepiston, piston pin uye zvimwe zvikamu zveboka repiston, uye musoro wecylinder nezvimwe zvinhu pamwe chete kuti zvigadzire imba yekupisa, inomira nesimba regesi. uye pfuura simba kune crankshaft kuburikidza nepiston pin uye yekubatanidza tsvimbo kupedzisa kushanda kweinjini yekupisa yemukati.
Nekuti piston iri munzvimbo inomhanya-mhanya, yakakwira-kudzvanya uye yakanyanya-tembiricha yakaoma kushanda nharaunda, asi zvakare kuti tifunge nekushanda kwakatsetseka uye kwakasimba kweinjini, zvinodikanwa kuti piston inofanirawo kuva nesimba rakakwana uye kuoma, yakanaka yekupisa conductivity, kupisa kwakanyanya kupikisa, diki yekuwedzera coefficient (saizi uye chimiro chinoshanduka kuve chidiki), diki density (light uremu), kupfeka uye kusadzivirirwa kwecorrosion, asiwo mutengo wakaderera.Nekuda kwezvizhinji uye zvakakwirira zvinodiwa, zvimwe zvezvinodiwa zvinopesana, zvakaoma kuwana piston zvinhu zvinogona kuzadzisa zvinodiwa.
Iyo piston yeinjini yemazuva ano inowanzo gadzirwa nealuminium alloy, nekuti aruminiyamu alloy ine zvakanakira diki density uye yakanaka yekupisa conductivity, asi panguva imwe chete, ine zvipingamupinyi zvekuwedzera yakakura coefficient uye kushomeka kwekushisa kwekushisa kwesimba, iyo inogona. zvinongosangana chete neane musoro dhizaini.Naizvozvo, kunaka kweinjini yemotokari kunoenderana kwete chete nezvinhu zvakashandiswa, asiwo pane kunzwisisika kwedhizaini.
Kune makumi ezviuru zvezvikamu mumotokari, kubva ku crankshafts uye gearboxes kusvika kumatsutso washer uye mabhaudhi nenzungu.Chikamu chimwe nechimwe chine basa rayo, senge piston mhete "diki", inoita seyakapusa kubva pachimiro, yakareruka uremu, mutengo zvakare wakachipa kwazvo, asi basa harisi diki.Pasina iyo, motokari haigoni kufamba, kunyange kana iine dambudziko duku, motokari haizove yakajairika, ingave yakakura kushandiswa kwemafuta, kana simba risina kukwana.Mukusanganiswa kweboka rose repiston necylinder, boka repiston rinonyatsobata cylinder madziro ecylinder ndiyo mhete yepiston, iyo inozadza mukaha pakati pepiston uye cylinder wall kuvhara imba yekupisa, saka ndiyo zvakare. inonyanya kupfekwa chikamu mujini.Iyo piston mhete inowanzo gadzirwa nesimbi yakakandwa, ine imwe dhigirii yekunyungudika, ine akasiyana maumbirwo emuchinjiko, uye ine coating pamusoro pekuwedzera kumhanya-mukuita.Kana injini ichimhanya, piston inodziya uye nekuwedzerwa, saka mhete yepiston ine gap rakavhurika.
Kuti uchengetedze kusimba panguva yekuisa, gomba rekuvhura remhete yepiston rinofanira kuderedzwa.Piston kazhinji ine zvindori zvitatu kusvika zvina zvepiston, izvo zvakakamurwa kuita mapoka maviri ezvindori zvegasi uye zvindori zveoiri zvinoenderana nemabasa avo akasiyana.Mhete yegesi inoiswa mumhete groove kumucheto wepamusoro wepiston kudzivirira kubuda kwemhepo, kutamisa kupisa kwemusoro wepiston kumadziro ecylinder, uye kubvisa kupisa kwepiston.Basa rerin'i yemafuta nderokudzivirira mafuta ekuzora kuti asapinda mukamuri rinopisa, uye kukwenya mafuta akawandisa ekuzora pamadziro ecylinder kudzokera pani yemafuta, iyo inoiswa muzasi mhete groove yemhete yegesi.Chero bedzi izvo zvinodikanwa zvebasa rekuisa chisimbiso zvakavimbiswa, nhamba yepiston mhete ishoma pane iyo iri nani, nhamba yepiston mhete ishoma pane yakaderera friction nzvimbo, kuderedza kurasikirwa kwesimba, uye kupfupisa kureba kwepiston, izvo zvinoenderana zvinoderedza kureba kweinjini.
Kana mhete yepiston ikaiswa zvisina kufanira kana kuiswa chisimbiso kusina kunaka, kuchaita kuti mafuta ari pamadziro ecylinder apise pamwe chete nekamuri rinopisa uye musanganiswa, zvichiita kuti mafuta apise.Kana kuchena pakati pemhete yepiston nemadziro ecylinder kuri kudiki kana kuti piston ring yakanamira mugoro remhete nekuda kwekuunganidza kabhoni, nezvimwewo, apo piston ikaita kudzoreredza kufamba ichikwira nekudzika, inogona kukwenya silinda. rusvingo, uye mushure menguva refu, ichaita groove yakadzika pamadziro evhavha, iyo inowanzonzi "cylinder pulling" chiitiko.Iyo cylinder wall ine grooves, uye chisimbiso chakashata, izvo zvichaitawo kupisa kwemafuta.Naizvozvo, kushanda kwepiston kunofanirwa kutariswa nguva nenguva kudzivirira kuitika kwemamiriro maviri ari pamusoro uye kuve nechokwadi chekushanda kwakanaka kweinjini.
Nguva yekutumira: Jul-03-2023