Yintoni ikholamu ephezulu yevalvu yemoto?
Isiqu sevalvu yemoto, edla ngokubizwa ngokuba yivalvu tappet okanye ivalvu tapple, siyinxalenye ebalulekileyo kwinkqubo yesitimela sevalvu yenjini. Sinoxanduva olukhulu lokuguqula intshukumo yokujikeleza kwe-camshaft ibe yintshukumo ethe tyaba yokunyuka nokuhla kweevalvu, ngaloo ndlela ilawula ngokuchanekileyo ukuvulwa nokuvalwa kweevalvu.
Umsebenzi oSisiseko:
Njengomlandeli wekhamera, i-valve tappet ifumana amandla ngqo kwiprofayili yekhamera ize iwadlulisele kwi-pushrod okanye kwi-valve.
Ngexesha lokudluliselwa kwentshukumo, kufuneka ikwamele imelane namandla asecaleni asetyenziswa yikhamera kwaye idlulisele la mandla kwintloko yesilinda okanye kwibhloko yenjini ukuqinisekisa ukusebenza okuzinzileyo kwesitimela sevalvu.
Udidi oluPhambili:
I-Mechanical Tappet: Isakhiwo silula kwaye ixabiso liphantsi, kodwa sinokuvelisa ingxolo enkulu ngexesha lokusebenza kwaye kufuna ukulungiswa kwevalvu ngesandla ukuze kulungiswe ukwanda okanye ukuguguleka kobushushu.
I-Hydraulic Tappet: Isebenzisa uxinzelelo lweoyile ngaphakathi ukuze ilungise ngokuzenzekelayo, ivumela ukuba ivalvu ingabi zero, ngaloo ndlela inciphisa kakhulu ingxolo yenjini kwaye yenze ukusebenza kube lula. Nangona kunjalo, ulwakhiwo lwayo luyinkimbinkimbi ngakumbi kwaye ixabiso liphezulu.
Iimpawu zesakhiwo kunye nezixhobo:
Ukuze kuncitshiswe ubunzima, i-valve tappet kwinkqubo efakwe phezulu kwevalve idla ngokuyilwa njengesakhiwo esisilinda.
I-Roller Tappet luhlobo oluqhelekileyo, olunciphisa ukungqubana kunye namandla asecaleni ngesakhiwo se-roller, nto leyo ephucula ukusebenza kakuhle, kodwa isakhiwo sinzima ngakumbi kwaye sisetyenziswa kakhulu kwiimeko ezinomthwalo omkhulu njengeenjini zedizili ezinkulu.
Izinto eziqhelekileyo ziquka isinyithi esifakwe i-nickel-chromium alloy, isinyithi esifakwe i-alloy ebandayo, okanye isinyithi esifakwe i-alloy esinamandla aphezulu. Umphezulu wokungqubana ufuna unyango lobushushu kunye nokusilwa ngokuchanekileyo ukuze kuphuculwe ukumelana nokuguguleka. Itekhnoloji yanamhlanje ikwasebenzisa iinkqubo zonyango lomphezulu ezifana ne-DLC (Diamond-like Carbon) coating ukuze kuncitshiswe ngakumbi i-friction coefficient.
Ukubaluleka kunye noLondolozo:
Ukusebenza kwe-valve tappet kuchaphazela ngokuthe ngqo amandla enjini, ukonga amafutha, kunye namanqanaba okukhupha umbane. Ukuba kukho iziphene ezifana nokuguguleka, ukuguqulwa, okanye ukunamathela, kuya kubangela ukuvulwa nokuvalwa kwevalve okungaqhelekanga, okukhokelela ekungcangcazeleni kwenjini, ukulahleka kwamandla, kunye nokusetyenziswa kwamafutha okwandileyo.
Ukuze yandise ubomi bayo benkonzo, kufuneka kutshintshwe ioyile rhoqo kunye nokugcinwa kwenjini ukuqinisekisa iimeko ezilungileyo zokuthambisa.
I-valve tappet (ebizwa ngokuba yi-valve tappet) yinxalenye ebalulekileyo kwinkqubo ye-valve train ye-injini. Umsebenzi wayo ophambili kukuguqula intshukumo yokujikeleza ye-camshaft ibe yintshukumo ethe tyaba yokunyuka nokuhla kwee-valve, ngaloo ndlela ilawula ukuvulwa nokuvalwa kwee-intake kunye nee-exhaust valves, ukuqinisekisa ukuba injini igqibezela imijikelo emine yokungenisa, ukucinezela, ukuvelisa umbane, kunye ne-exhaust.
Imisebenzi ethile ingahlulwahlulwa ibe ngamanqaku alandelayo:
Ukudlulisa intshukumo kunye namandla: Ifumana ngokuthe ngqo ukutyhala okuvela kwi-camshaft ize iyithumele kwi-pushrod okanye kwi-valve, iqhube i-valve ukuba ivale ngexesha elimiselweyo.
Ukumelana namandla asecaleni: Ngexesha lokujikeleza kwekhamera, amandla asecaleni ayaveliswa, kwaye i-valve tappet kufuneka idlulisele la mandla kwintloko yesilinda okanye kwibhloko yenjini ukuqinisekisa intshukumo ezinzileyo.
Ukulungisa ngokuzenzekelayo ukuhla kwevalvu (uhlobo lwehydraulic): Iinjini zanamhlanje zisebenzisa kakhulu ii-hydraulic tappets, ezizaliswe yioyile kwaye zinokulungisa ngokuzenzekelayo ukuhla kwevalvu ngenxa yokwanda okanye ukuguguleka kobushushu, nto leyo efezekisa ukusebenza "kwe-zero clearance", ngaloo ndlela kunciphisa kakhulu ingxolo yenjini kwaye kuphucule ukuguda kokusebenza.
Ukunciphisa iimfuno zolondolozo: Iitappets ze-hydraulic azidingi ukulungiswa ngesandla kwe-valve clearance, nto leyo eyenza kube lula inkqubo yokugcinwa kwenjini.
Ukuba i-valve tappet (ingakumbi uhlobo lwe-hydraulic) ayisebenzi, njengokuguguleka, ukuvuza kweoyile, okanye umoya ongena ngaphakathi, iya kubangela iingxolo "ezingaqhelekanga" (ezibonakala ngakumbi kwiinjini ezibandayo) kwaye inokukhokelela ekulahlekelweni kwamandla, ukwanda kokusetyenziswa kwepetroli, okanye iingxaki zokukhupha umbane.
Izizathu eziqhelekileyo ziquka uxinzelelo lweoyile olunganelanga, inqanaba leoyile eliphezulu kakhulu okanye eliphantsi kakhulu, okanye i-oyile engangqinelaniyo.
Ngoko ke, ukutshintsha rhoqo ioyile kunye nokugcina inkqubo yokuthambisa eqhelekileyo zizinto ezibalulekileyo zokwandisa ubomi benkonzo ye-valve tappet kunye nokuqinisekisa ukusebenza kakuhle kwenjini.
Nceda ubhale umbhalo ongathanda ukuba ndiwuguqulele ngokuchanekileyo
Ukuba ufuna ukwazi okungakumbi, qhubeka ufunda amanye amanqaku kule sayithi!
Nceda usitsalele umnxeba ukuba ufuna iimveliso ezinjalo.
Zhuo Meng Shanghai Auto Co., Ltd. uzimisele ukuthengisa iMG&MAXUSiinxalenye zeemoto zamkelekile ukuthenga.
