Camshaft ndi imodzi mwamagawo ofunikira a injini. Thupi lalikulu la camshaft ndi ndodo ya cylindrical yokhala ndi kutalika kofanana ndi gulu la silinda. Pali makamera angapo oyendetsa ma valve. Choncho, ntchito yaikulu ya camshaft ndiyo kuyendetsa kutsegula ndi kutseka kwa valve.
Kulumikizana pakati pa cam ndi tappet ndikokwera kwambiri, ndipo liwiro lothamanga lachibale limakhalanso lalitali kwambiri, kotero kuvala kwa cam ntchito pamwamba kumakhala kovuta kwambiri. Potengera izi, magazini ya camshaft ndi malo ogwirira ntchito a kamera ayenera kukhala olondola kwambiri, olimba pang'ono komanso osasunthika mokwanira, komanso kukana kuvala kwambiri komanso mafuta abwino.

Common malfunctions

Kulephera kofala kwa ma camshaft kumaphatikizapo kuvala kwachilendo, phokoso lachilendo, ndi kusweka. Zizindikiro za kuvala zachilendo nthawi zambiri zimachitika phokoso lachilendo ndi kusweka kusanachitike.
(1) Camshaft ili pafupi kumapeto kwa makina opangira mafuta a injini, kotero kuti kuyamwa kwake sikuli bwino. Ngati pampu yamafuta ilibe mphamvu yokwanira yoperekera mafuta chifukwa chogwiritsa ntchito nthawi yayitali, ndi zina, kapena njira yamafuta opaka mafuta yatsekedwa ndipo mafuta opaka mafuta sangathe kufika pa camshaft, kapena ma torque omangirira a mabawuti okhala ndi kapu ndi yayikulu kwambiri komanso mafuta opaka mafuta. mafuta sangathe kulowa mumpata wa camshaft, Zimayambitsa kuvala kwachilendo kwa camshaft.
(2) Kuvala kwachilendo kwa camshaft kumapangitsa kuti kusiyana pakati pa camshaft ndi mpando wonyamulira kuchuluke, ndipo camshaft idzadutsa axial displacement ikasuntha, zomwe zimapangitsa phokoso lachilendo. Kuvala kwachilendo kumapangitsanso kusiyana pakati pa drive cam ndi hydraulic tappet kuti ichuluke. Kamera ikaphatikizidwa ndi tappet ya hydraulic, chiwopsezo chidzachitika, chomwe chimayambitsa phokoso lachilendo.
(3) Camshaft nthawi zina imakhala ndi zolephera zazikulu monga fractures. Zomwe zimayambitsa ndi kusweka kwa matepi a hydraulic tappet kapena kuvala kwambiri, mafuta osakwanira bwino, camshaft yabwino, komanso kuphulika kwa zida za camshaft.
(4) Nthawi zina, kulephera kwa camshaft kumayambitsidwa ndi zifukwa zopangidwa ndi anthu, makamaka pamene camshaft siinaphwanyidwe bwino ndikusonkhanitsidwa pamene injini ikukonzedwa. Mwachitsanzo, pochotsa kapu yonyamula camshaft, gwiritsani ntchito nyundo kapena screwdriver kuti muthamangitse kuthamanga, kapena mukayika kapu yonyamula, malo a kapu yonyamula sagwirizana ndi mpando, kapena torque yomangirira ya bolt. chipewa chonyamula ndi chachikulu kwambiri. Mukayika chivundikiro chonyamulira, tcherani khutu ku muvi wowongolera ndi nambala yamalo pamwamba pa chivundikirocho, ndipo gwiritsani ntchito wrench ya torque kuti mumitse mabawuti omangirira chivundikirocho motsatira makokedwe ake.