Kodi chisindikizo cha mafuta a valavu ya galimoto ndi chiyani?
Zisindikizo za mafuta a mavavu ndi mtundu wa chisindikizo cha mafuta, chomwe nthawi zambiri chimapangidwa pophatikiza mafupa akunja ndi fluororubber pamodzi. Masiponji odzilimbitsa okha kapena mawaya achitsulo amayikidwa pamalo otseguka a chisindikizo cha mafuta kuti amange ndodo zoyendetsera mavavu a injini.
Zingathe kuletsa mafuta a injini kulowa m'mapaipi olowera ndi otulutsa utsi, kupewa kutaya mafuta, kuletsa kusakaniza kwa mafuta ndi mpweya komanso kutulutsa mpweya, komanso kuletsa mafuta a injini kulowa m'chipinda choyaka moto. Chifukwa chakuti zimakumana ndi mafuta a mafuta ndi mafuta a injini kutentha kwambiri, zipangizo zomwe zimalimbana bwino ndi kutentha komanso kukana mafuta nthawi zambiri zimakhala fluororubber.
Chotsekera mafuta cha valavu chomwe chawonongeka chingayambitse mavuto ambiri. Mwachitsanzo, mafuta a injini amatha kulowa mu silinda motsatira ndodo yotsogolera valavu, zomwe zimapangitsa kuti mpweya ukhale m'mapulagi a spark, kuwonongeka kwa magwiridwe antchito, kapena kulephera kugwira ntchito, zomwe zimachepetsa mphamvu ya injini. Kupendekeka kwa valavu kungayambitse kutseka bwino kwa silinda, kuchepa kwa mphamvu ya silinda, mphamvu ya injini yofooka, komanso kugwiritsa ntchito mafuta mwachangu. Mukayendetsa mtunda wautali, injini ikhoza kuwonongeka chifukwa cha kusowa kwa mafuta.
Ngati galimoto ikuvutika kuyendetsa galimoto kapena kutulutsa utsi wabuluu, mwina chisindikizo cha mafuta cha valavu chakalamba. Pali zifukwa zambiri zokalamba. Zinthu zakunja zomwe zimasakanikirana panthawi yoyika, fumbi, kusakhazikika bwino, njira yolakwika yoyikira, kukonza kopanda kufanana, ndi zina zotero zitha kuyambitsa kutuluka kwa madzi. Kupanikizika kwambiri pakusankha kungayambitse kuluma kwa mpata ndi mpweya kusakanikirana, zomwe zimapangitsa kuti adiabatic compression ndi seal burn. Kuyenda kobwerezabwereza kwapamwamba kungayambitse kuti seal itenthe, ndipo kupukuta kouma ndi fumbi lozungulira kungayambitse kuwonongeka kwachilendo kwa mphete yotsekera ndi dzimbiri mu groove yotsekera, zomwe zingakhudzenso. Kusankha kosayenera kwa zipangizo zothandizira pakupanga, kuchotsedwa kosayenera kwa ma friction pairs, ma thread guide angles osayenerera kumapeto kwa mbiya ya silinda, pistoni ndi silinda, ma angle osayenerera oyendetsera kuyika, kukhwima kosayenera kwa malo otsetsereka, electroplating yosafanana, ndi kukhwima kosakwanira kwa groove yotsekera zonse zitha kuwononga mphete yotsekera. Kuphatikiza apo, mavuto ndi chinthucho kapena kutseka kosayenera ndi kusungira, komanso kuwonongeka ndi kuwonongeka kwa zinthu zotsekera chifukwa cha kutentha kwambiri panthawi yoyendera, zingayambitsenso kukalamba.
Kukhazikitsa ndi kusintha ma valve oil seals kumaphatikizapo njira zina. Mukachotsa camshaft ndi hydraulic tanner. Gwiritsani ntchito spark plug wrench kuti muchotse ma spark plugs. Sinthani pisitoni ya silinda yofanana nayo pakati pa dead. Gwiritsani ntchito mabolts kuti muyike chida chopondereza masika pamutu wa silinda. Lumikizani air compressor. Gwiritsani ntchito mandrod yolumikizidwa ndi chidutswa chopondereza kuti mukanikize pansi valavu. Chotsani kasupe. Dinani pang'onopang'ono mpando wa valavu. Chotsani valavu loko block. Gwiritsani ntchito chida kuti mutulutse valavu stem oil seal. Mukayika, pulasitiki sleeve iyenera kumangirizidwa ku valavu stem kuti mupewe kuwonongeka kwa oil seal yatsopano. Ikani pang'ono wosanjikiza wa mafuta a injini pamlomo wa oil seal. Ikani oil seal pa chidacho ndikuchikankhira pang'onopang'ono pa valavu guide. Musanayike ma intake and exhaust valves, ikani wosanjikiza wa mafuta a injini ku valavu stem.
Pomaliza, ngakhale kuti chisindikizo cha mafuta a valavu ndi chaching'ono, ntchito yake ndi yofunika kwambiri. Vuto likangobuka, liyenera kuthetsedwa mwachangu.
Zigawo za ma valve assembly zikuphatikizapo ma valve, ma valve springs, ma valve lock clamps, ma valve guides, ma valve seat rings, ma valve stem seals, ma valve seals, ndi zina zotero.
Ma valve ndi zinthu zofunika kwambiri zomwe zimalamulira kulowa ndi kutuluka kwa mpweya, ndipo amagawidwa m'magawo atatu: mitu ya ma valve, mipando ya ma valve, ndi ma valve stems. Popanga mutu wa ma valve kuti ukhale ndi mphamvu yopangidwa ndi kupsinjika kwa kuyaka, kutalika kwa nkhope ya ma valve kumaganiziridwa. Ma valve stem amagwiritsidwa ntchito kutsogolera mkati mwa valve guide. Kuti apewe kuwonongeka, nthawi zambiri amagwiritsa ntchito malo okhala ndi chrome.
Kasupe wa valavu ndiye amene amatseka valavuyo m'njira yowongoka kuti apewe kugwedezeka valavuyo ikadumpha. Kapangidwe kake kabwino ndi kasupe wozungulira wofanana.
Chitsogozo cha valavu chimagwiritsidwa ntchito kuonetsetsa kuti valavu ili pakati pa mpando wa valavu ndikusamutsa kutentha kupita ku mutu wa silinda kudzera mu tsinde la valavu. Mukayika, malo abwino kwambiri ayenera kusiyidwa.
Chotsekera cha valve chimathandizira kulumikiza mpando wa kasupe wa valve ndi valve. Chimagawidwa m'mitundu iwiri: mtundu wa clamping ndi mtundu wa non-clamping. Mtundu wa clamping ndi woyenera kwambiri injini zomwe zili ndi liwiro lalikulu lozungulira.
Mpando wa valavu umathandiza kulekanitsa chipinda choyaka ndi njira ya mpweya. Kutentha kumasamutsidwanso kuchokera ku valavu kupita ku mutu wa silinda kudzera m'derali. M'lifupi mwake nthawi zambiri ndi 1.2 mpaka 2.0mm. Ngodyayo imakhudza momwe chitseko chimagwirira ntchito komanso momwe chimagwirira ntchito.
M'mimba mwake mwa valavu yolowera ndi 15% mpaka 30% kuposa ya valavu yotulutsira utsi kuti iwonjezere kuchuluka kwa mpweya wolowera. Injini zamagalimoto zamakono zogwira ntchito kwambiri nthawi zambiri zimagwiritsa ntchito mavavu atatu, anayi kapena asanu pa silinda iliyonse. Pakati pawo, mainjini a mavavu anayi amagwiritsidwa ntchito kwambiri, zomwe zimatha kuwonjezera kuchuluka kwa mpweya wolowera, mphamvu ndi mphamvu, kuchepetsa mphamvu ya kayendedwe ka mavavu, komanso makamaka kugwiritsa ntchito chipinda choyaka chooneka ngati marque, chomwe chingathandize pakuyaka.
Ngati mukufuna kudziwa zambiri, pitirizani kuwerenga nkhani zina patsamba lino!
Chonde tiimbireni foni ngati mukufuna zinthu zotere.
Malingaliro a kampani Zhuo Meng Shanghai Auto Co., Ltd. yadzipereka kugulitsa MG&MAXUSzida zamagalimoto zalandiridwa kugula.
