Valve stem lwezimpawu: izimpawu zokuguga futhi esikhundleni

Modern tech izinjini kabi emelelwa ngaphandle uhlelo oluhle Lubrication. Kodwa futhi kuyadingeka ukuba uthole amafutha amasilinda.

Kuyini valve uwoyela uphawu?

Valve stem seal valve (valve noma izimvu zamanzi) zenzelwe ukuvimbela ukugeleza uwoyela okweqile kusukela injini. Njengabantu abaningi izingxenye injini, bona akhiwe ngerabha ukwakheka ekhethekile. Njengoba isikhathi sihamba, lezi izingxenye ukuguga, ngakho - iphelelwa amandla. It libhekene lenqwaba. seal Okudala kabi sigcina amafutha ngokweqile kanye igrisi ukusetshenziswa luyanda kakhulu. Ngaphezu ukugeleza enkulu lubricating uketshezi, singaku- limaza motor. Ake sibone izimpawu ukwehluleka yalezi izingxenye kanye ufunde indlela esikhundleni lwezimpawu valve stem.

Kungani zidingeka e injini?

I ikhanda isilinda ngokufanele valve behileleka okuyinto yangaphakathi omlilo engine. Ingxenye engenhla imininingwane, noma kunalokho umlenze wakhe, njalo ingena ukuxhumana camshaft. Lapho siphenduka, inhloko isilinda kudalwa kusukela uwoyela slurry. Enye ingxenye valve etholakala indawo lapho ngokuqhubekayo baxhumane nge ingxube amafutha kanye amagesi qeda. Ukuze usebenze camshaft bekulokhu onokwethenjelwa elingenazinkinga, udinga semali igrisi. Kodwa-ke kumele kukhunjulwe ukuthi igrisi angangeni egumbini amandla omlilo akuvunyelwe.

Ngakho onjiniyela wakhuphuka nale ngxenye. Kuyilapho umphini iragela phambili, irabha uwoyela uphawu kususa uwoyela emilenzeni, ngaphandle wasidlulisela ekamelweni amandla omlilo.

Kuphi ukuthola seal valve?

Injini umphini stem lwezimpawu atholakala ngokushesha futhi kalula. Basuke etholakala ngqo ku-valve, uma inhlangano injini. Uma injini zezikhali ke udinga ukuzibheka ekhanda isilinda. Isibalo sazo izingxenye akuyona kunzima ukuthola. Ziyakwazi kakhulu nje valve.

Kanjani le ndlala?

indlala Modern kuyinto cap akhiwe ngerabha. Ukuze ukuthembeka, it is kwagcizelela steel emikhonweni futhi entwasahlobo. Entwasahlobo kuvumela ngaphezulu uvalwe agxishiwe kuya onqenqemeni zokusebenza isivalo valve.

Ukuphumelela imininingwane asichazi umklamo uqobo. impahla Okubalulekile kophawu uwoyela senziwa. Lapho cap wenziwe i iraba acrylate noma vtorkauchuka ke sikwazi ukukhuluma kophawu ezinhle.

Izinjini onobuhle amadala ifakwe lwezimpawu ze-non-kwagcizelela, okuyinto zenziwa Teflon - okuthuthukiswa umphetho ebanzi.

Kufanele kuqondwe ukuthi bafake valve stem lwezimpawu akuxhomekile ezingeni futhi uhlobo lwemoto, kanye nalabo ubuchwepheshe asetshenziswe ekukhiqizeni amanye yabo. Futhi onobuhle ezahlukene Vaz futhi Mercedes lwezimpawu angase abe nokuphila inkonzo efanayo.

Kuyadingeka ukuba wazi kahle hle ukuthi hlobo luni ofeleba ku motor. Ngemva kwenqubo esikhundleni - ngempela eyohlinzwa ezibizayo. Lena ngokuyinhloko ngenxa yokuthi kubalulekile ukuqaqa injini. Futhi, automakers belulekwa ukuba enze ukufakwa izingxenye zokuqala kuphela imodeli injini.

Valve stem seal - izimpawu zokuguga

I crankshaft uzungeza lapho injini 500 rev / imiz idling, futhi uma ushayela - futhi 4500 rev / ngomzuzu. Isizathu salokhu siwukuthi yonke valve ngomzuzu ihlolwe kusukela imijikelezo 150 kuya 1200. Ngokwemvelo, lokhu kulandisa ngoba wethulwa umthwalo esikhulu lwezimpawu. Ngaphezu kwalokho, cap has ngezinga eliphezulu of ukuchayeka nolaka chemical imvelo. Kukhona indlala impahla wokuthinta uwoyela ashisayo qeda amagesi.

Ngenxa yalezi imithwalo okokusebenza kwakhiwa kusuka okuyinto ingxenye ekhethekile nethambile, kuba liqine futhi lisithinte ngokwengeziwe. Khona-ke kukhona Ukufiphalisa of imiphetho zokusebenza engxenyeni. Kulokhu, ukuba esikhundleni valve stem zamanzi, injini ungakwazi ugeze noma afeze zokuvimbela.

Nokho, kumelwe ungacabangi ukuthi lezi zimvu zamanzi azizange kufanele zishintshwe njalo ngonyaka. abakhiqizi banamuhla baye usumisiwe isiko ukukhiqizwa kulezi zingxenye. Ukuphindisela zonke amakhilomitha 100,000 kunesidingo. Kodwa zikhona izinjini lapho esikhundleni kumele kwenziwe njalo.

Yiziphi ubudala umphini stem lwezimpawu izimpawu zokuguga? Lapha kuyabonakala noma ngokubukeka. Gqoka sizomu elibonakala umusi ipayipi qeda. Kungase kubonakale okwesikhashana kuphela lapho injini waqala noma lapho injini unyathela amabhuleki.

On imininingwane efana valve seal, izimpawu zokuguga ngesimo intuthu - hhayi kuphela isibonakaliso faktor.Vtoroy - anda 'isifiso "ngamafutha. Kulokhu, ukuvuza lubricating uketshezi angeke uyalandelwa. Uma sikhuluma, izinga ukugeleza kuzokhulisa ukuba 1 ilitha uwoyela 1000 km. Futhi, esinye isici - brining futhi Lubrication we electrode ku inhlansi.

Indlela esikhundleni lwezimpawu valve stem?

Abaningi belulekwa ukuba bafeze lo msebenzi ngendlela SRT eqinisekisiwe, njengoba umsebenzi kudinga disassembly injini. Ungakwazi bafeze lo msebenzi ngaphandle kokukhipha ikhanda isilinda, kuphela isitoko ivolumu edingekayo ukubekezela.

Amathuluzi

Ukuze usebenze kudingeka amanye amathuluzi. Ngokuvamile kuthatha amathuluzi, esetshenziselwa motor ukulungiswa. Ngenani impintshisi Ukugunda namathuluzi ekhethekile cindezela entwasahlobo valve. Udlawana kuyodingeka uthole imvuthu. Ngaphandle kwakho konke lokhu, lo mandrel kuyadingeka, ngosizo okuyinto izobanjelwa lwezimpawu cindezela okulingana. Kusadingeka isando kanye nemigoqo tin solder. Ubukhulu kwebha kufanele kungabi angaphezulu kwangu-8 cm ububanzi.

wire esikhundleni

Ukususa lwezimpawu umphini stem yakhiwa izinyathelo ezilandelayo. Okokuqala udinga ahlukanisa ikhava isilinda ikhanda. Khona-ke cranking le crankshaft. Crank ezidingekayo nje uphawu sprocket camshaft nge uphawu efanayo eziveza izindlu. Khona-ke ukususa eziveza izindlu kanye camshaft. Manje kungenzeka ukulungisa sprocket kanye chain. Nqamula izintambo kusukela plugs inhlansi yenhlansi sokulalela inhliziyo kubuhlungu.

Esigabeni esilandelayo ngazo kahle entwasahlobo bese ususa isigwedlo idrayivu valve. Thina ususelwe ipuleti ukukhiya kukhishwe entwasahlobo. Everts ngokulungisa isikulufa. Esikhundleni screw liyadingeka isikulufa ithuluzi elingase cindezela entwasahlobo valve. Ukuvulwa, eyasungulwa ngokususa amakhandlela, wafaka ibha yethu. Lokhu kuyadingeka ukuqinisekisa ukuthi valve uhlala avaliwe. Manje thina khulula crackers. Ngenxa yale njongo, ngokuvamile kuba kunesidingo cindezela entwasahlobo valve futhi qinisa rassuharivatelya umshudo. Susa izingxenye, ukuhlanza ithuluzi.

Manje ungabona lwezimpawu. Uma ungazi kanjani ukushintsha lwezimpawu valve, kufanele usebenzise esibulalayo push-e. Lokhu kuvumela usebenzisa ukukhanya Ushaya labadubuli pin lwezimpawu isusiwe. Akubalulekile ukusebenzisa idrayivu ukuphuma isikudilayiva, impintshisi noma yimuphi omunye amathuluzi ezifanayo. Ngakho ungakwazi strut emkhonweni.

A imininingwane emisha kufanele sibeke ngokucophelela valve (futhi ngesikhathi esifanayo uzame hhayi ibangela umonakalo ngesikhathi ingxenye yayo). evele Yangaphakathi kufanele ezinamafutha akahle. Ngakho uzokhuthaza indlala kanye valve kuya emikhonweni mhlahlandlela. Manje ihlala yasentabeni, futhi ekugcineni ucindezela kule uphawu uwoyela.

Ngemva yimpumelelo isikhathi ngokucindezela ukuba babuthane konke oda reverse. Ngakho, wena wafunda kanjani ukushintsha lwezimpawu valve.

Indlela ukukhetha lwezimpawu?

Namuhla, kunamabandla cishe awunankinga izingxenye ezisele. Nokho, musa siqambe isimo uma une baphephele izingxenye ezisele anconywe ngumkhiqizi, kanye neqiniso lokuthi kukhona ezitolo.

Uma sikhuluma kukhethwa valve stem zamanzi, ukuthi injongo yabo eyinhloko - bonyana batshidze stem valve futhi valve iziqondiso. Lezi zimpawu kumele bavikele combustor kusukela uwoyela. Lapho umphini stem uwoyela seal izimpawu ezibonakala zokukhandleka, kusho ukuthi sekuyisikhathi sokuba khona yokufuna amasha.

Uyazi ukuthi lezi zinto ahlelwe. Ibonisa ukusetshenziswa kwalezi izinto, ikhambi elinjalo kwenza kube nokwenzeka ukuze bathole imiphumela emihle. Ngakho, Ukuvikelwa iyagcinwa ngokuzuma uma asonte stem valve.

onobuhle ezintsha zika- ofeleba eyenziwe FKM noma irabha acrylate asetshenziswa izinjini yesimanje. Nokho, akekho futhi ndawo ukuba bathi ingasetshenziswa hhayi imishini amadala.

Uma idrayivu ubudala ukufaka ezintsha uwoyela bushelelezi indandatho, ukugqoka izimpawu zivele isikhathi kamuva kakhulu, futhi motor lungaphezu ukuzuza uthathe leso sinyathelo. Lona ikhambi elilungile uma cap kuyavumelana valve phezu osayizi kokwehla.

Nokho kubalulekile ukuba acabangele iphrofayili engxenyeni engaphakathi indlala. Ngokwesibonelo, izinjini Japanese babe namakepisi kukhona ngaphakathi protrusion. On emkhonweni Umhlahlandlela ngalesi inkatho iphuzu. Akubalulekile lokufeza ucwaningo futhi ukubeka imininingwane enjalo ku emikhonweni bushelelezi.

ukuphila ofeleba Long sizonikeza ukufakwa lwezimpawu entsha ku izinjini ezintsha. Uma injini ubudala angabakhulula onobuhle ezintsha namakepisi ngeke yini, uma ngamafutha uphawu imodeli endala ibe imodeli entsha yangaphakathi omlilo injini ke yini engenzeka. Lonke Iphuzu liwukuthi ngisho ukuthi, okuyinto umphini stem seals izici kwesakhiwo, nokuthi izitshalo ezintsha amandla asebenza ngaphansi kwezimo ezinzima kakhulu. onobuhle ezindala lwezimpawu is neze ukumelana nakakhulu leyo misebenzi. Ngakho-ke, ukuthenga kwabo kuyize.

Ngakho, senza ukuthi yimuphi babe umphini stem lwezimpawu izimpawu zokuguga.