Kumasistimu okupholisa ezimoto anedrayivu yefeni kagesi, ifeni ivulwa futhi ivalwe ngokuzenzakalelayo lapho izinga lokushisa elipholile lishintsha.Indima eyinhloko ohlelweni idlalwe yi-fan turn on sensor - ungafunda konke mayelana nale ngxenye kusuka kulesi sihloko.
Iyini inzwa yokuvula abalandeli?
Inzwa yokuvula abalandeli iyisisetshenziswa sikagesi noma se-electromechanical esineqembu lokuxhumana (amaqembu) elivala noma elivula isekethe kagesi kuye ngezinga lokushisa.Inzwa ifakiwe kumjikelezo wokuphakelwa kwamandla noma ukulawulwa kokushayela kwefeni kagesi yesistimu yokupholisa injini, iyisici esibucayi esinikeza isignali yokuvula noma ukuvala ifeni ngokuya ngezinga lokushisa lesipholile (okupholisayo) .
Lezi zinzwa zisetshenziswa kuphela ezimotweni ezifakwe amafeni okupholisa amarediyetha ashayelwa ngogesi.Abalandeli benjini abashayelwa yi-crankshaft bavulwa baphinde bacishwe kusetshenziswa i-viscous clutch noma ngezinye izindlela ezingacatshangwa lapha.
Izinhlobo zezinzwa zokuvula abalandeli
Zonke izinzwa zabalandeli zihlukaniswe ngamaqembu amabili ngokuya ngesimiso sokusebenza:
•Electromechanical;
•I-elekthronikhi.
Ngakolunye uhlangothi, izinzwa ze-electromechanical zihlukaniswe izinhlobo ezimbili:
• Ngesici sokuzwa esisekelwe kuketshezi olusebenzayo olune-coefficient ephezulu yokunwetshwa (i-wax);
• Ngesici sezinzwa esisekelwe ku-bimetallic plate.
Ngenxa yezici zokuklama, izinzwa ze-electromechanical zingaxhunywa ngokuqondile kumjikelezo wokuphakelwa kwamandla abalandeli (yize kuvame ukufakwa inzwa kumjikelezo we-fan relay), futhi izinzwa zikagesi zingaxhunywa kuphela kumjikelezo wokulawula idrayivu yabalandeli.
Futhi, izinzwa ze-electromechanical zihlukaniswe ngezinhlobo ezimbili ngokuya ngenani lamaqembu okuxhumana:
• Isivinini esisodwa - yiba neqembu elilodwa lokuxhumana, elivala ebangeni elithile lokushisa;
• Ijubane elibili - yiba namaqembu amabili othintana nawo avala emazingeni okushisa ahlukene, okukuvumela ukuthi uguqule isivinini sefeni ngokuya ngezinga lokushisa elipholile.
Kulokhu, amaqembu okuxhumana angaba kwesinye sezimo ezimbili: ngokuvamile avuliwe futhi avamise ukuvaleka.Esimweni sokuqala, umshayeli uvula lapho oxhumana nabo bevaliwe, okwesibili - lapho bevula (ama-circuits okulawula engeziwe angasetshenziswa lapha).
Okokugcina, izinzwa ziyahluka ekushiseni/kuvaliwe kwabalandeli.Kumadivayisi asekhaya, izikhawu ze-82-87, 87-92 kanye ne-94-99 ° C zinikezwa, kumadivayisi angaphandle izinga lokushisa lihlala cishe ngaphakathi kwemingcele efanayo, lihluka ngedigri elilodwa kuya kwamabili.
Idizayini kanye nesimiso sokusebenza kwenzwa ye-electromechanical nge-wax
Lolu uhlobo oluvame kakhulu lwezinzwa zabalandeli.Isisekelo senzwa yisitsha esigcwele i-petroleum wax (i-ceresite, equkethe ikakhulukazi amapharafini) ene-admixture ye-powder yethusi.Isitsha esine-wax sivaliwe nge-membrane eguquguqukayo lapho i-pusher itholakala khona, exhunywe kumshini wokushayela kothintana naye ohambayo.Idrayivu yokuxhumana ingaba eqondile (usebenzisa i-pusher efanayo) noma engaqondile, usebenzisa i-lever kanye nesiphethu (kulokhu, ukuvalwa okuthembekile nokuvulwa kwesifunda kufinyelelwa).Zonke izingxenye zivalwe ngekesi lensimbi elinezindonga eziwugqinsi (lokhu kunikeza ukushisisa okufanayo koketshezi olusebenzayo) ngentambo nesixhumi sikagesi.
Isimiso sokusebenza kwenzwa enjalo sisekelwe emphumeleni wokushintsha umthamo woketshezi olusebenzayo lapho izinga lokushisa lishintsha (libuye lisetshenziswe kuma-thermostats emoto).I-wax, edlala indima yoketshezi olusebenzayo ku-sensor, ine-coefficient enkulu yokwandisa okushisayo, lapho ishisa, iyanda futhi isuswa esitsheni.I-wax ekhulayo ihlezi ngokumelene nolwelwesi futhi ibangela ukuba iphakame - lokho, futhi, inyakazisa i-pusher futhi ivale othintana nabo - ifeni iyavula.Lapho izinga lokushisa lehla, i-membrane iyancipha futhi othintana nabo bavule - i-fan iyacisha.
Izinzwa zejubane ezimbili zisebenzisa, ngokulandelana, ulwelwesi olubili kanye nokuxhumana okubili okunyakazayo, okuqalwa ngezikhathi ezihlukene zokushisa.
Inzwa ifakwe kurediyetha yokupholisa (ngokusebenzisa i-gasket yokuvala), ingxenye yayo yokusebenza ixhumene ngqo ne-coolant, lapho uketshezi olusebenzayo lushisa khona.Ngokuvamile, imoto isebenzisa inzwa eyodwa yabalandeli, kodwa namuhla ungakwazi futhi ukuthola izixazululo ngezinzwa ezimbili ezinesivinini esisodwa ezibekwe kumazinga okushisa ahlukene.
Idizayini nomgomo wokusebenza kwenzwa enepuleti le-bimetallic
Kunezinhlobonhlobo eziningi zezinzwa zalolu hlobo, kodwa ngokuvamile, ukuklama kwazo kulula kakhulu.Isisekelo senzwa siyipuleti ye-bimetallic yesimo esisodwa noma esinye, lapho othintana naye ohambayo etholakala khona.Kungase futhi kube nezingxenye ezisizayo kunzwa yokuvalwa kokuxhumana okuthembekile.Ipuleti lifakwa kukesi lensimbi elivaliwe, elihlinzeka ngentambo nesixhumi sikagesi ukuze kuxhunywe ohlelweni lokulawula abalandeli.
Isimiso sokusebenza kwenzwa sisekelwe esimweni sokuguqulwa kwepuleti le-bimetallic lapho izinga lokushisa lishintsha.Ipuleti le-bimetallic amapuleti amabili ezinsimbi ahlanganiswe elinye nelinye anama-coefficient ahlukene okwanda okushisayo.Njengoba izinga lokushisa likhuphuka, izinsimbi zanda ngezindlela ezahlukene, ngenxa yalokho, ipuleti le-bimetallic ligoba futhi lihambisa othintana naye ohambayo - isifunda sivala (noma sivula ngoxhumana nabo abavamise ukuvala), i-fan iqala ukujikeleza.
Ukuxhumana kwenzwa kufana nalokhu okuchazwe ngenhla.Izinzwa zalolu hlobo yizona ezingavamile kakhulu ngenxa yentengo yazo ephezulu nobunkimbinkimbi.
Idizayini kanye nesimiso sokusebenza kwenzwa ye-elekthronikhi
Ngokwesakhiwo, le nzwa nayo ilula kakhulu: isekelwe ku-thermistor ebekwe ekesini elikhulu lensimbi elinentambo yokufaka isikulufu kurediyetha nesixhumi sikagesi.
Isimiso sokusebenza kwenzwa sisekelwe emphumeleni wokushintsha ukumelana kukagesi kwe-thermistor lapho izinga lokushisa lishintsha.Kuye ngohlobo lwe-thermistor, ukumelana kwayo kungase kwehle noma kukhuphuke ngokunyuka kwezinga lokushisa.Ushintsho ekuphikiseni kwe-thermistor lubhekwa yisifunda se-elekthronikhi, okuthi, lapho izinga lokushisa elithile lifinyelelwe, lithumela amasignali okulawula ukuvula, ukushintsha isivinini sokujikeleza noma ukuvala fan.
Ngokwesakhiwo, le nzwa nayo ilula kakhulu: isekelwe ku-thermistor ebekwe ekesini elikhulu lensimbi elinentambo yokufaka isikulufu kurediyetha nesixhumi sikagesi.
Isimiso sokusebenza kwenzwa sisekelwe emphumeleni wokushintsha ukumelana kukagesi kwe-thermistor lapho izinga lokushisa lishintsha.Kuye ngohlobo lwe-thermistor, ukumelana kwayo kungase kwehle noma kukhuphuke ngokunyuka kwezinga lokushisa.Ushintsho ekuphikiseni kwe-thermistor lubhekwa yisifunda se-elekthronikhi, okuthi, lapho izinga lokushisa elithile lifinyelelwe, lithumela amasignali okulawula ukuvula, ukushintsha isivinini sokujikeleza noma ukuvala fan.
Isikhathi sokuthumela: Aug-24-2023