Mavavu: ntchito, kukonza ndi mtengo

Ma valve ndi gawo lofunikira pakugwira ntchito moyenera kwa injini yanu. Iwo amachita nawo kuyaka kwake. Ma valve olowetsa ndi mpweya amalola mpweya kulowa ndikutuluka m'chipinda choyaka. Kutsegula ndi kutseka kwawo kumayendetsedwa ndi camshaft.

🚗 Kodi mavavu amagwira ntchito bwanji?

. mavavu ndi magawo omwe mungapeze mu injini yagalimoto yanu. Pamene injini ikuyenda, valavu imayenda. Choncho, valavu ili ndi malo awiri: malo otseguka ndi malo otsekedwa.

Vavu imakhala ndi tsinde, kolala, mutu ndi mchira. Ntchito yayikulu ya mavavu ndikuonetsetsa kuti kumangika chipinda choyaka moto ndi kuphulika kwa mpweya wosakaniza mafuta.

Pali mitundu iwiri ya mavavu: valavupolowera и valavuzothamanga... Valavu yolowera imalola mpweya kulowa mchipinda choyaka, ndipo valavu yotulutsa mpweya imalola kuti mpweya woyaka utulutsidwe.

izicamshaft zomwe zimapangitsa kuti ma valve ayambe kugwira ntchito. Ma valve amatseguka akakanikizidwa ndi camshaft. Akasupe a camshaft amasunga ma valve otsekedwa ndi makina omwe amawakoka.

Chifukwa chake, mpweya umalowa kudzera mu valve yolowera ndipo mpweya umatuluka kudzera mu valve yotuluka. Ma valve amagwirizanitsidwa ndi mfuti chifukwa cha kayendedwe ka camshaft ndi crankshaft zomwe zimayendetsedwa ndi kayendedwe ka pistoni.

Nthawi zambiri pamakhala ma valve awiri pa valve. silinda, ndipo nthawi zambiri timapeza pa injini 4 masilindala, omwe ali okwana 8 mavavu.

???? Kodi mungadziwe bwanji ngati ma valve awonongeka?

Monga mbali zambiri zagalimoto yanu, valavu imatha kuwonongeka ndikupangitsa injini kuti isagwire bwino ntchito. Nazi mndandanda wazizindikiro zazikulu zomwe ziyenera kuwonetsa momwe ma valve anu alili:

• Mukumva kuomba mmanja pa ma valve;
• Inu mukuzindikira kutaya mphamvu injini yanu;
• Mukuyang'ana kugwiritsa ntchito mafuta kwachilendo.

Kawirikawiri, mukaona zizindikiro izi, mavavu anu akhoza kukhala ndi mitundu iwiri ya mavuto:

• Vavu ndi yopindika : Izi zimachitika kawirikawiri ngati valavu yanu ikukhudzana ndi pamwamba pa pistoni. Ngati ndi choncho, zikutanthauza kuti injini yanu siinagwirizanenso bwino ndipo vuto limakhala ndi lamba wanthawi. Osazengereza kupita ku garaja kukawona mavavu chifukwa mutha kuwononga mutu wa silinda kapena pistoni.
• Vavu yayaka : Izi nthawi zambiri zimawononga ma valve otulutsa mpweya. Vavu yoyaka nthawi zambiri imakhala chifukwa cha mpweya woyaka womwe umatuluka pakati pa valavu ndi mpando wa valve. Kuti muwone ngati valavu yotulutsa mpweya yomwe yapsa, yang'anani momwe mungagwiritsire ntchito mafuta mopitilira muyeso, kuwotcha, kapena kuchepa kwa magwiridwe antchito poyendetsa.

🗓️ Ndi nthawi yoti muchotse ma valve?

Valve clearance ndiyeso yomwe imatsimikiziramtunda pakati pa tsinde la valve ndi camshaft pamene valavu ili pamalo otsekedwa.

Ngati chilolezo cha valve ndi chachikulu kwambiri ndipo kuwongolera kwa valve kumayambitsa phokoso, ntchito ya injini imachepetsedwa chifukwa nthawi yotsegulira valve imafupikitsidwa.

Ngati chilolezo cha valve sichikukwanira, chimayambitsa kusakhazikika komanso zovuta kuyambira chifukwa cha kutayikira kwa valve.

Mulimonse momwe zingakhalire, magwiridwe antchito a injini yanu amachepetsa ndipo kugwiritsa ntchito mafuta kumawonjezeka. Choncho, m'pofunika kusintha valavu chilolezo. Opaleshoniyi iyenera kuchitidwa nthawi zonse kapena pamene zizindikirozi zikuwoneka kuti ziteteze kuwonongeka kwa mbali zina za injini yanu.

👨‍🔧 Kodi mumayendetsa bwanji mavavu?

Kuphwanya ma valve ndi ntchito yovuta yomwe imafuna chidziwitso chakuya cha makina. Ngati muwona kuti injini yanu ikutha mphamvu, valavu ya galimoto yanu iyenera kuthyoledwa. Nawa njira zoyambira kuti muthyole mavavu anu.

Zofunika Pazinthu:

• Bokosi Lazida
• Chonyamulira ma valve
• Magnet
• Bur
• Pepala la abrasive
• Lapping phala
• Chikho choyamwa

Gawo 1: kupeza mavavu

Kupeza ma valve anu kungakhale kotopetsa ngati simunazolowere kukhudza injini yagalimoto yanu. Zowonadi, muyenera kukhetsa madzi munjira yozizira, kuchotsa ma hoses, ndiyeno lamba wanthawi.

Ndiye kusagwirizana polowera ndi kubwereketsa ndi kusagwirizana throttle chingwe ndi zofunika kugwirizana magetsi. Tsopano ndi nthawi yochotsa mutu wa silinda. Kuti muchite izi, choyamba masulani zomangira za silinda, kenako chotsani mutu wa silinda. Kenako chotsani camshafts.

Khwerero 2: chotsani ma valve

Gwiritsani ntchito chonyamulira valavu kuti musavutike kuchotsa valavu. Kenako gwiritsani ntchito maginito kuchotsa ma crescents mu valavu. Chitani chimodzimodzi ndi ma valve onse.

Khwerero 3: yeretsani ma valve

Musanathyole mavavu, muyenera kuwayeretsa. Kubowola ndi siponji abrasive angagwiritsidwe ntchito kuyeretsa valavu tulips. Komanso yeretsani mutu wonse wa silinda. Gawo ili ndi lalitali, koma ndikofunikira, kuti mutha kuchita bwino.

Khwerero 4: kuswa ma valve

Pa sitepe iyi, mudzafunika phala laling'ono ndi kapu yoyamwa. Yambani popaka mafuta ku mchira wa valve ndikugwetsa phala pa tulip. Tsopano muyenera kuyika valavu mu kalozera wake.

Kenako ikani kapu yoyamwa pamwamba pa valavu ndikuizungulira kwa masekondi pafupifupi 30. Ndiye inu mukhoza kuchotsa valavu ndiyeno kuyeretsa tulip ndi kukula. Yang'anani zipatala mpaka mutapeza filimu yotuwa yofanana. Malizitsani ntchitoyi poyeretsa zilolezo ndi njanji.

Khwerero 5: sinthani ma gaskets

Kuti ma valve azikhala olimba, ma gaskets ayenera kusinthidwa. Kuti muchite izi, chotsani chisindikizo chowonongeka, kenaka phatikizaninso chisindikizo chatsopano pamalo omwewo. Mutha kugwiritsa ntchito socket ndi nyundo.

Khwerero 6: phatikizani ma valve

Pa sitepe iyi, muyenera kukonzanso kasupe, m'malo mwa crescents, ndikugwirizanitsanso msonkhano wa valve.

Khwerero 7: sonkhanitsani zigawo zonse

Mavavu anu atayikidwa, phatikizaninso mbali zonse zomwe mwachotsa. Kumbukiraninso kuchotsa mpweya kudera lozizirira. Mavavu anu tsopano asinthidwa!

💰 Kodi mavavu amawononga ndalama zingati?

Mtengo wa gawolo siwokwera kwambiri: m'masitolo apadera mudzapeza ma valve pamtengo wake ma euro makumi awiri... Komabe, mtengo wa ntchito ukhoza kukwera mofulumira chifukwa kupeza ma valve kumatenga nthawi yaitali.

Tsopano mukudziwa udindo wa mavavu mu injini yanu! Kuti mudziwe mtengo weniweni wosinthira ma valve, mutha kudutsa wofananira wa garaja ndikupeza mndandanda wamakina abwino kwambiri pafupi ndi inu komanso pamtengo wabwino kwambiri!