Mphete ya pisitoni.
Mphete ya Piston (Piston Ring) imagwiritsidwa ntchito kuyika payipi ya piston mkati mwa mphete yachitsulo, mphete ya piston imagawidwa m'mitundu iwiri: payipi ya compression ndi payipi yamafuta. Mphete ya compression ingagwiritsidwe ntchito kutseka mpweya wosakaniza woyaka mu chipinda choyaka; Mphete yamafuta imagwiritsidwa ntchito kukanda mafuta ochulukirapo kuchokera ku silinda. Mphete ya piston ndi mtundu wa mphete yachitsulo yotanuka yokhala ndi kusintha kwakukulu kwakunja, komwe kumasonkhanitsidwa mu mbiri ndi payipi yake yofanana. Mphete za piston zobwerezabwereza ndi kuzungulira zimadalira kusiyana kwa mphamvu ya mpweya kapena madzi kuti apange chisindikizo pakati pa bwalo lakunja la mphete ndi silinda ndi mbali imodzi ya mphete ndi payipi ya mphete.
Ntchito ya mphete ya pistoni imaphatikizapo kutseka, kuwongolera mafuta (kuwongolera mafuta), kuyendetsa kutentha (kusamutsa kutentha), kutsogolera (kuthandizira) maudindo anayi. Kutseka: kumatanthauza kutseka mpweya, musalole kuti mpweya wa chipinda choyaka utuluke kupita ku crankcase, kutuluka kwa mpweya kumayendetsedwa pang'ono, kumapangitsa kuti kutentha kugwire bwino ntchito. Kutuluka kwa mpweya sikungochepetsa mphamvu ya injini, komanso kumapangitsa kuti mafuta awonongeke, yomwe ndi ntchito yayikulu ya mphete ya gasi; Sinthani mafuta (kuwongolera mafuta): mafuta ochulukirapo opaka pakhoma la silinda amachotsedwa, ndipo khoma la silinda limakutidwa ndi filimu yopyapyala yamafuta kuti zitsimikizire kuti silinda ndi pistoni ndi mphete zikulowa bwino, yomwe ndi ntchito yayikulu ya mphete yamafuta. M'mainjini amakono othamanga kwambiri, chidwi chapadera chimaperekedwa pa ntchito ya filimu ya mafuta yowongolera mphete ya pistoni; Kuyendetsa kutentha: kutentha kwa pistoni kumatumizidwa ku silinda kudzera mu mphete ya pistoni, ndiko kuti, kuzizira. Malinga ndi deta yodalirika, 70 ~ 80% ya kutentha komwe kumalandiridwa ndi pamwamba pa pistoni yosaziziritsidwa kumafalikira kudzera mu mphete ya pistoni kupita ku khoma la silinda, ndipo 30 ~ 40% ya pistoni yozizira imafalikira kudzera mu mphete ya pistoni kupita ku khoma la silinda; Thandizo: Mphete ya pistoni imasunga pistoni mu silinda, imaletsa kukhudzana mwachindunji pakati pa pistoni ndi khoma la silinda, imatsimikizira kuyenda bwino kwa pistoni, imachepetsa kukana kukangana, ndikuletsa pistoni kugwetsa silinda. Nthawi zambiri, pistoni ya injini ya petulo imagwiritsa ntchito mphete ziwiri za gasi ndi mphete imodzi yamafuta, pomwe injini ya dizilo nthawi zambiri imagwiritsa ntchito mphete ziwiri zamafuta ndi mphete imodzi ya gasi.
Njira yolondola yokhazikitsira mphete ya pistoni ndi iyi:
1. Choyamba muyenera kuyika mphete yamafuta, kenako mphete yamafuta, dongosolo limakhala pansi mpaka mmwamba;
2. Mphete iliyonse ikayikidwa, kutsegula kwa mphete ya pistoni sikuyenera kukulitsidwa kwambiri, kungokwanira kulowa mu pistoni;
3. Ikani mphete yamafuta yosakanikirana:
Ikani mphete ya liner mu groove ya mphete ya mafuta ya piston, samalani kuti kutsegula kwa mphete ya liner sikungagwirizane; Ikani mbale zachitsulo zapansi ndi zapamwamba popanda kugwiritsa ntchito zida zotsegulira mipata. Mukayika, choyamba gwirani mbali imodzi ya mbale yachitsulo yapansi mu malo olowera mphete, kanikizani malo otsegulira mbale yachitsulo ndi chala chanu chachikulu, lowetsani chala chachikulu cha dzanja lina mu malo olowera mphete kumbali ya mbale yachitsulo, kenako yikani mbale yachitsulo chapamwamba mwanjira yomweyo. Musayike mbale zachitsulo zapamwamba ndi zapansi kumbali imodzi ya mphete ya liner; Kuti mupewe kusakanikirana kwa mipata ya mphete ya liner pamene piston ikakankhira mu silinda, gwedezani mipata ya mbale yapamwamba ndi yapansi ndi zolumikizira za mphete ya liner ndi madigiri 90 mpaka 120. Mukayika, tembenuzani pang'onopang'ono mphete yamafuta yophatikizidwa ndi dzanja, ndipo iyenera kukhala yosalala popanda kumatirira.
4. Kukhazikitsa mphete ya gasi:
Gwiritsani ntchito zida zapadera kuti muyike mphete ziwiri za gasi ndi mphete imodzi ya gasi motsatizana, musatembenuze mphete yoyamba ya gasi ndi mphete yachiwiri ya gasi; Mukayika, mbaliyo imalembedwa kuti (HYR, HY, CSR, TLK, ALS, H, R, ndi zina zotero). Iyenera kuyang'ana mmwamba (kutsogolo kwa mutu wa pistoni); Yendetsani kutseguka kwa mphete ya gasi madigiri 180, musatembenuze kutsegula komwe kuli pini ya pistoni.
5. Musanasonkhanitse mphete ya pistoni mu silinda, ndikofunikira kusintha malo otsegulira mphete iliyonse ya pistoni.
Ntchito ya mphete ya pisitoni:
1. Kutseka zotsatira
Mphete ya pistoni imatha kusunga chisindikizo pakati pa pistoni ndi khoma la silinda, ndipo kutuluka kwa mpweya kumayendetsedwa pang'ono, komwe kumayendetsedwa ndi mphete ya gasi. Imatha kuletsa silinda ndi pistoni kapena silinda ndi mphete ya pistoni chifukwa cha kutuluka kwa mpweya pakati pa kuluma; Imathanso kuletsa kulephera komwe kumachitika chifukwa cha kuwonongeka kwa mafuta opaka.
Gawo 2: Kutenthetsa
Mphete ya pistoni imatha kusamutsa ndi kufalitsa kutentha kwakukulu komwe kumapangidwa ndi kuyaka kupita ku khoma la silinda, ndipo ingathandize kuziziritsa pistoni.
3. Ntchito yowongolera mafuta
Mphete ya pistoni imatha kukanda mafuta odzola omwe amamangiriridwa ku khoma la silinda kuti mafuta azigwiritsidwa ntchito bwino, omwe amanyamulidwa ndi mphete ya mafuta.
4. Mphamvu yothandizira
Mphete ya pistoni imakwera ndi kutsika mu silinda, ndipo pamwamba pake potsetsereka pamayendetsedwa kwathunthu ndi mphete ya pistoni, zomwe zimalepheretsa pistoni kukhudzana ndi silinda mwachindunji ndikuchita gawo lothandizira.
Pali mitundu iwiri ya mphete za pisitoni: mphete za gasi ndi mphete za mafuta. Mphete ya gasi imagwiritsidwa ntchito kuonetsetsa kuti pisitoni ndi silinda zimatsekedwa bwino komanso kutseka mpweya wopanikizika m'chipinda choyaka moto. Mphete ya mafuta imagwiritsidwa ntchito kukanda mafuta ochulukirapo pa silinda, zomwe zingalepheretse mafuta kutuluka mu silinda ndikuyaka.
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Zhuo Meng Shanghai Auto Co., Ltd. yadzipereka kugulitsa zida zamagalimoto za MG&MAUXS zomwe zikulandiridwa kugula.
