Kodi ma valve rocker arm ndi tappet ndi chiyani
Nkhono ya valavu yamagalimoto ndi tappet ndi mbali zofunika kwambiri zamakina a valve injini yamagalimoto, ndipo iliyonse ili ndi ntchito yake komanso zotsatira zake. pa
Valve rocker mkono
Valve rocker arm ndi gawo lofunikira pamakina a valve ya injini, ntchito yake yayikulu ndikugwira ntchito ndi camshaft kuti zitsimikizire kutsegulira ndi kutseka kwa valve panthawi yake, kuti amalize kulowetsa ndi kutulutsa mpweya. Dzanja la rocker ndi lever ya mikono iwiri yokhala ndi dzenje lapakati ngati fulcrum. Dzanja lalifupi limakhala ndi zomangira zosinthira valavu kumbali imodzi, ndipo mkono wautali umaperekedwa ndi nkhope yogwira ntchito kuti ikankhire valavu.
Chovala cha valve
Ntchito yaikulu ya tappet ya valve ndiyo kusamutsa kayendedwe ndi mphamvu ya camshaft ku ndodo yokankhira kapena valavu, ndikukankhira ndodo kapena valve kuti mugonjetse mphamvu ya kasupe wa valve. Tappet iyenera kupirira mphamvu yotsatiridwa ndi CAM panthawi yogwira ntchito ndikuitumiza ku thupi kapena mutu wa silinda. Ma tappets amatha kugawidwa m'makina ndi ma hydraulic tappets, iliyonse ili ndi kapangidwe kake ndi ntchito yake:
makina tappet : Nthawi zambiri amapangidwa ndi chitsulo cha alloy kapena alloy cast iron ndi kukana bwino. Mapangidwe ake ndi osavuta koma chilolezo cha valve chiyenera kusinthidwa nthawi zonse.
hydraulic tappet : Imachotsa zokha chilolezo cha valve popanda kusintha ndikuchepetsa phokoso lotumizira. The hydraulic tappet imapangidwa ndi thupi la tappet, plunger ndi kasupe wamalipiro, ndi zina zotero, zomwe zimasinthidwa ndi kukakamizidwa kwa mafuta ndi machitidwe a kasupe.
Zochitika zenizeni zogwiritsira ntchito ndi ubwino ndi zovuta zake
mechanical tappet : kapangidwe kosavuta, koma kumafunika kukonzedwa pafupipafupi komanso kusintha kwa valve clearance. Zimagwira ntchito pazochitika zomwe sizikusowa kukonza kwakukulu.
hydraulic tappet : mawonekedwe ovuta koma amatha kusinthidwa okha, kuchepetsa ntchito yokonza, yoyenera kudalirika kwambiri komanso zofunikira zaphokoso zomwe zikuchitika. The hydraulic tappet imasinthidwa zokha kudzera mu mphamvu ya mafuta ndi kasupe, zomwe zimatha kuthetsa chilolezo cha valve ndikuchepetsa phokoso lotumizira.
Udindo wa valve rocker arm ndi tappet makamaka umaphatikizapo izi:
Udindo wa tappet
Ntchito yayikulu ya tappet ndikusamutsa kukankhira kwa camshaft kupita ku ndodo yokankhira kapena ndodo, ndikukankhira ndodo kapena valavu kuti mugonjetse mphamvu ya kasupe wa valve ndikusuntha. Panthawi imodzimodziyo, zojambulazo zimakhalanso ndi mphamvu zotsatizana zomwe zimayendetsedwa ndi kuzungulira kwa camshaft. Tappet itha kugawidwa m'mitundu iwiri: tappet wamba ndi hydraulic tappet:
tappet wamba: kuphatikiza tappet ya bowa, tappet ya migolo ndi tappet yodzigudubuza. Ma tappets wamba ndi zida zolimba ndipo sangathe kungochotsa chilolezo cha valve, chifukwa chake ndikofunikira kusintha chilolezo cha valve nthawi zonse.
hydraulic tappet : Itha kuthetsa chilolezo cha valve ya injini, palibe chifukwa chosinthira chilolezo cha valve, ndipo imatha kuchepetsa phokoso lamagetsi lamagetsi a injini. The hydraulic tappet imangosintha chivundikiro cha valve kupyolera mu mphamvu ya mafuta ndi machitidwe a kasupe wobwezera kuti atsimikizire kuyanjana kwapafupi pakati pa valve ndi CAM.
Udindo wa rocker mkono
Ntchito yayikulu ya mkono wa rocker ndikudutsa mphamvu kuchokera ku ndodo yokankhira kapena CAM kupita ku valve mutatha kusintha njira kuti itsegule. Msonkhano wa rocker arm uli ndi rocker arm, shaft ya rocker arm, mpando wothandizira, screw clearance adjustment screw ndi mbali zina. Zigawozi zimagwirira ntchito limodzi kuti zitsimikizire kutsegulidwa kolondola ndi kutseka kwa valve, potero kuwongolera njira yolowera ndi kutulutsa ndikuwonetsetsa kuti injini ikuyenda bwino.
Mfundo yogwira ntchito
Injini ikugwira ntchito, crankshaft imayendetsa camshaft kuti izungulire njira yotumizira, ndipo CAM pa camshaft imakankhira ndodo kapena valavu kudzera mu tashet. Pamene gawo lokwezeka la CAM likukankhira pa tappet, tappet imasamutsa mphamvu ku ndodo yokankhira kapena valve, kutsegula valavu. Ndi kuzungulira kwa CAM, valavu imatsekedwa pang'onopang'ono pansi pa machitidwe a kasupe. Dzanja la rocker limatumiza mphamvu ya ndodo yokankhira kapena CAM ku valavu, kuonetsetsa kuti valavu imatsegula ndi kutseka molondola.
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Malingaliro a kampani Zhuo Meng Shanghai Auto Co., Ltd. adadzipereka kugulitsa zida zamagalimoto za MG&750 zolandilidwa kugula.
