Isiphakamisi se-valve ezinjinini ezivuthayo zangaphakathi - kudingeka nini ukushintshwa kwevalvu?

Umuntu ngamunye ophakamisa ama-valve unomthwalo wemfanelo wokunxephezela ukuphuma kwe-valve. Lokhu kunciphisa ibanga phakathi kwendawo ephezulu ye-pushrod kanye nekhamera ye-shaft. Inethonya elinamandla ngesikhathi sokuvula ama-valve kanye nokuvalwa kwawo okulungile. Ngakho-ke, isiphakamisi se-valve kufanele sibe sesimweni sokusebenza futhi sinikeze imvume ye-valve yasefekthri ezinjinini ezivuthayo zangaphakathi. Thola ukuthi isebenza kanjani futhi uma ubona ukuthi kukhona okungalungile ngayo futhi idinga ukushintshwa. Bona ukuthi ungakwazi yini ukulawula le nto ngokwakho!

Ama-valve lifter kanye nomklamo wawo

Izinkomishi ze-valve - njengoba lezi zakhi zibizwa futhi - zinomklamo olula. Ngokuvamile ahlanganisa:

• umzimba;
• isibhamu;
• amakamelo aphansi futhi aphezulu;
• hlola i-valve;
• uwoyela pad;
• iziphethu.

Lona umklamo wama-hydraulic valve lifters asetshenziswa ezinjinini eziningi ezikhiqizwayo njengamanje. Inzuzo yabo engenakuphikwa ukuntuleka kwesondlo. Kodwa-ke, kukhona abakhiqizi bamatapethi angenawo ama-hydraulic, futhi adinga ukulungiswa ngezikhathi ezithile. Lokhu kungase kuphazamise, kodwa isiphakamisi se-valve esinjalo sizoba lula kakhulu futhi sihlala isikhathi eside.

Iziphakamisi ze-hydraulic valve - umgomo wokusebenza

Ngabe i-hydraulic pusher isebenza kanjani enjinini? Ukucindezela kwekhamera ye-camshaft phezulu kwe-tappet kubangela ukuthi i-valve yokuhlola ivale futhi ikhulise ukucindezela. Ngenxa yalokhu, imvume ye-valve ikhanseliwe, futhi i-valve ingasebenza ngesikhathi esifanele. Lapho ikhamera ye-shaft yehliswa futhi ingasathinti i-pusher, i-valve iyavuleka futhi ukucindezela emakamelweni kuyalingana. Ngemva kwalokho, i-valve ingavalwa futhi ibuyiselwe endaweni yayo yasekuqaleni.

I-tappet ye-Hydrodistributor - ingalimala?

Ingabe i-hydraulic lifter ingahluleka? Ngokuqinisekile yebo, yingakho ukushintshwa okuvamile kuyadingeka. Isiphakamisi se-valve esisebenzisa uwoyela wenjini singahluleka uma singcolile. Lena ingxenye encane uma kuqhathaniswa engaphansi kwemithwalo ebalulekile namazinga okushisa ashintshashintshayo, ngakho-ke idinga ukunakekelwa ekusebenzeni. Kuyafaneleka ukusebenzisa amafutha enjini ekhwalithi enhle kakhulu futhi uwashintshe njalo. Ngisho nokungcola okuncane kungavala amashaneli kuma-pusher futhi kuvimbele ukusebenza kwawo.

Yini Ebangela Izinkinga Ze-Valve Tappet?

Ngaphezu kwalokho, ngokuhamba kwesikhathi, ama-pusher of the hydraulic distributors aguga. I-piston, i-spring, noma amaphedi kawoyela angase aguge futhi uwoyela wenjini uzoqala ukungena egunjini elivuthayo. Isinxephezelo sokucaciswa kwe-valve kungenzeka futhi singasebenzi, njengoba kungabonakala ekuziphatheni kwenjini. Ukuze uqonde lokhu, kufanelekile ukuchaza ukuthi kuyini imvume ye-valve.

Ukucaciswa kwe-valve ezinjinini ezivuthayo zangaphakathi

Isiphakamisi se-valve sixhunywe esikhaleni. Kungani amakhamera enjini engakwazi ukuthinta ngokuqondile futhi alawule amavalvu? Lokhu akwenzeki ngezizathu ezimbalwa. Enye yezinto ezibaluleke kakhulu ukuziphatha kwezinsimbi ngaphansi kwethonya lokushisa lokusebenza. Izingxenye zesikhathi sezimoto ziyakhula uma kushisa, okunciphisa ibanga phakathi kwezingxenye ngazinye. Ukulawula izikhathi zokuvula nokuvala kwe-valve kudinga umshini onokususwa kwe-valve ebonakalayo engalinganiswa njengoba injini ifudumala futhi iphola. Uma kungenjalo, ngesikhathi sokusebenza kweyunithi, ama-valve abengeke avaleke futhi kungqubuzane namapiston noma ukwehla kokucindezelwa.

Iziphakamisi ze-valve zemoto ezilimele - izimpawu zokuguga

Uma ucekele phansi noma ugqoke ompompi emotweni yakho, izimpawu ziyabonakala kusiko lokusebenza kwenjini. Lapho ingenzi lutho, lapho injini ibanda, ukusebenza kweyunithi kungase kuphazamiseke. Ama-revs ngeke ahlale njalo futhi ukucindezela kuzokwehla, ngenxa yokucaciswa kwe-valve encane kakhulu. Ngenxa yalokho, ama-valve awavali, okuzwakala ngokushesha ngendlela yokuncipha kwe-dynamics yemoto. Ngaphezu kokucaciswa okuncane kakhulu, isiphakamisi se-valve singabangela ukucaciswa okuningi kakhulu. Khona-ke uzozwa ukungqongqoza kwensimbi ngesikhathi sokusebenza. Lapho amabhlogo eshisa, ayama njengoba ukunwetshwa kwensimbi kususa ukudlala ngokweqile.

Ungawabheka kanjani ama-hydraulic lifters emotweni?

Ngokuvamile lezi zakhi azihluleki ngokuzumayo, kodwa kancane kancane zilahlekelwa izakhiwo zazo. Ngakho-ke, umshayeli ongenalwazi angase angezwa noma abone izinguquko ekusebenzeni kwenjini. Nokho, kuyasiza ukubona ukuthi injini ebandayo isebenza kanjani:

• noma ngabe igcina inzuzo ezinzile;
• ingabe kunenkinga ngokucindezelwa;
• ingabe kukhona umehluko ohlukile ekusebenzeni kwenjini ebandayo nefudumele;
• ingabe yenza noma yimuphi omunye umsindo ngemva nje kokwethulwa.

I-valve lifter - izindleko zezingxenye ezisele kanye nokushintshwa

Kubiza malini ukushintsha iziphakamisi ezisebenza ngogesi? Izindleko zengxenye eyodwa aziphezulu kakhulu. Ezinjinini zikadizili ezidumile, into enjalo ingabiza ukusuka kuma-zloty ambalwa ukuya kuma-zloty ambalwa lilinye. Khumbula, nokho, ukuthi ngokuvamile ukushintshwa kuhlanganisa zonke izingxenye, hhayi, ngokwesibonelo, ezi-2 kwezingu-8 noma eziyi-16. I-valve pusher eyodwa ikhethiwe ku-valve eyodwa, ngakho-ke uma, ngokwesibonelo, kukhona abangu-16 ekhanda, khona-ke ama-pusher angu-16 adinga ukuthengwa esitolo. Ngaphezu kwalokho, futhi ususa i-gasket ngaphansi kwesembozo se-valve, okubiza ama-zloty ayishumi engeziwe. Umakhenikha omuhle uzokweluleka nokushintsha uwoyela wenjini. Ngakho-ke, yonke into kanye nomsebenzi ingasondela emngceleni wama-euro angama-800-100.

Ukuzishintsha kweziphakamisa izivalo

Ngokuvamile kungcono kakhulu ukushintsha ama-pusher kuma-workshops afakazelwe. Yiqiniso, ungakwenza ngokwakho futhi ayikho ifilosofi enkulu kulokhu, kodwa udinga ukuba nolwazi oluningi mayelana nokuklama nokusebenza kwenjini. Uma i-valve lifter yonakalisiwe, kuyadingeka ukususa ikhava ye-valve futhi ukhulule i-camshaft (noma ama-shafts). I-disassembly ngokwayo ayinzima kakhulu, kodwa ukufaka kabusha lezi zakhi endaweni efanele kungaba inkinga kumuntu othanda ukuzilibazisa.

I-valve lifter ngaphandle kwesinxephezelo se-hydraulic backlash

Ezinye izinjini zakwaHonda nezakwaRenault zinevalvu eshintshwayo ngomshini. I-tappet ye-valve ayigcwaliswa ngamafutha, futhi ukusebenza kwayo kusekelwe kumapuleti akhethekile noma izakhi eziboshwe ngezikulufa. Igebe lilungiswa kusetshenziswa amapuleti engeziwe noma i-feeler gauge ongabheka ngayo ibanga. Kwezinye izingxenye zamandla, umsebenzi awudingi ukuphindaphindiwe kaningi (imvamisa njalo nge-60-000 km). Kodwa-ke, esimweni sezinjini ezisebenza ngegesi, ngezinye izikhathi kuyadingeka ukulungisa igebe izikhathi ezingu-100 kaningi! Futhi lokhu kudinga cishe ukususwa konyaka kwekhava kanye nokulungiswa kokucaciswa kwama-valve.