Sinotruk KC1560030012 336/371HP zida zokonzera injini Sinotruk Howo Engine mbali ya silinda liner, pisitoni ndi pisitoni mphete injini zida

Chidziwitso Choyenera

Kugwirizana kwa magawo anayiwa kumakhudza mwachindunji kusewera kwathunthu kwa injini, komanso moyo wautumiki ndi kudalirika kwa injini.Zofananira zinayi ndi msonkhano wabwino womwe umapangidwa mwa kusankha, zomwe sizimangopulumutsa vuto la kugula magawo osiyanasiyana, komanso zimachotsa zinthu zomwe zingatheke chifukwa cha kusankha kwa magawo osiyanasiyana, zomwe zingachepetse kwambiri kuwonongeka kwa injini ndikuwonjezera mphamvu. a injini, kuti atalikitse moyo wautumiki.Imakondedwa ndi kuyanjidwa ndi ambiri ogwiritsa ntchito pamsika wapambuyo-malonda.

Makhalidwe ogwirira ntchito a pistoni ndi ovuta kwambiri.Pamwamba pamakhala kukhudzana ndi mpweya wotentha kwambiri ndipo imakhala ndi mphamvu yothamanga kwambiri komanso mphamvu ya inertial yomwe imabwera chifukwa cha kubwereza kothamanga kwambiri.Magawo onse a pisitoni onse amakhudzidwa ndi mphamvu yokwanira komanso ma torque a kukanikiza, kupondaponda ndi kupindika, ndipo kutentha sikuli kofanana.Chifukwa chake, pisitoni imayenera kukhala ndi misa yaying'ono, kukulitsa kwakung'ono, kutentha kwabwino komanso kukana kuvala.Pistoni yopangidwa ndi ife imapangidwa ndi aluminiyamu alloy, yomwe ndi zinthu zosankhidwa za pistoni yamagalimoto pakadali pano.Pistoni iyenera kugwirizana kwambiri ndi khoma la silinda.Kuyika mphete ya pisitoni pa pistoni ndiye muyeso womwe watengedwa kuti athetse vutoli.Mphete ya pistoni imagawidwa kukhala mphete yamafuta ndi mphete yamafuta.Zakale zimalepheretsa kusakaniza kwa moto kuti zisalowe mu crankcase;Chomalizacho chimapangidwa ndi chitsulo cha alloy cast, chopendekeka pakamwa komanso elasticity.Ikakhala ndi manja pa pisitoni, imakhala ndi mawonekedwe otambasulira kunja ndikukakamira khoma la silinda.Chifukwa chake, mphete yathu ya pistoni imapangidwa ndi aloyi ya aluminiyamu kuti iwonetsetse kuti ikukula.Zinthu za silinda liner siziyenera kukhala ndi mphamvu zokwanira zamakina ndi kutentha, komanso kukhala ndi kukana kwabwino kovala, kukana dzimbiri, kusungidwa kwamafuta ndi mafuta, zomwe chofunikira kwambiri ndikukana kuvala.Pakalipano, zida zomwe zimagwiritsidwa ntchito kwambiri pa cylinder liner ndi nodular cast iron, high phosphorous cast iron and alloy cast iron.Zida za piston nthawi zambiri zimakhala chitsulo chochepa cha carbon kapena low carbon alloy steel.15, 20, 15Cr, 20Cr ndi 20Mn2 zitsulo zimagwiritsidwa ntchito kwambiri mu injini zokhala ndi katundu wochepa.Zitsulo zapamwamba za alloy, monga crni3a, 18cr mnti2 ndi 20si MnVB, zimagwiritsidwa ntchito pamainjini olimbikitsidwa.Nthawi zina 45 sing'anga carbon steel angagwiritsidwenso ntchito.Kuti apangitse gawo lakunja la pistoni kukhala lolimba komanso kuti lisavale, pistoni imafunikira chithandizo cha kutentha.Carburize ndikuzimitsa kunja kwa pistoni yopangidwa ndi chitsulo chochepa cha carbon.Malinga ndi kukula kwa piston pin, kuya kwa carburized wosanjikiza zambiri mu osiyanasiyana 0.5-2mm.Kwa pini 45 pisitoni zitsulo, kuzimitsa pamwamba kumachitika, ndi kuya kwa kuzimitsa wosanjikiza ndi 1-1.5mm.