Wood Head Cam: Imodzi kapena Iwiri

Kugawa kwa injini za 4-stroke Gawo 2

Sabata yatha tidawona njira zowongolera ma valve ndi kusinthika kwawo kupita ku machitidwe abwino kwambiri. Tsopano tiyeni tiwone Dual ACT, yomwe pakadali pano ndi injini ya valve ya quintessential.

Kutengera kwa intermediaries ...

Ngakhale kuoneka kwa camshaft pamwamba, pali malo otsetsereka owongolera ma valve, omwe si abwino. Poyika ma camshafts awiri pamwamba pa mavavu, amatha kugwira ntchito ndi anthu ochepa kapena opanda pakati. Lingaliro loperekedwa kuchiyambi kwenikweni kwa zaka za zana la 2, zaka zoposa 20 zapitazo. Mawu omwe amamasulira ku chidule cha DOHC mu Chingerezi ngati "Dual Overhead Camshaft".

Siginecha: Pa injini ziwiri za ACT, makamera amagwiritsira ntchito ma valve pogwiritsa ntchito matepi popanda kugwiritsa ntchito magalimoto otaya.

Pali ma push...

Komabe, kusakhalapo kwa chidutswa chapakati sikokwanira, chifukwa ndikofunika kusintha chilolezo cha valve (onani chimango). Chifukwa chake, matapeti amtundu wokhuthala adayikidwa kuti asinthe malowo. Koma mphamvu zambiri zomwe tikufuna, m'pamenenso zimachititsa kuti camshaft ichitike mofulumira. Gawo lomwe limachotsa malo olumikizirana ndi cam / thrust. Ndipo mukamapita mwachangu, ndipamenenso kusuntha uku, kotero kukula kwake kumayenera kukhala kokulirapo. Zotsatira zake, zimakhala zolemetsa !!! Gahena, izi ndi zomwe timafuna kupewa pochotsa rocker. Timayenda mozungulira.

Kusintha piritsi

Mbale yosinthira imatulukira pa chogwirira chakuda (kumapeto kwa screwdriver). Ikhozanso kuikidwa pansi pake, ndiye imakhala yopepuka, koma camshaft iyenera kuchotsedwa kuti ilowe m'malo mwake, zomwe zimapangitsa kuti zikhale zovuta kusintha.

Mwati linget?

Chifukwa chake, njira yomaliza ndiyo kugwiritsa ntchito tizitsulo tating'onoting'ono tozungulira zomwe zimawonjezera kusuntha kwa ma valve popanda kupendekera kwambiri. Chifukwa cha mawonekedwe ozungulira ozungulira, kusuntha kwa malo okhudzidwa kumachepetsedwa, zomwe zimachepetsa magawo ndikulemera. Nayi pamwamba pamwamba, yomwe imapezeka pa F1, pa njinga za GP komanso pamwamba pa njinga zopanga (monga BMW S 1000 RR) ...

Zokhala pakati pa camshaft ndi mavavu, zowongolera zimachotsa ndodo ndikusunga magalamu ofunikira pogawa injini zogwira ntchito kwambiri.

Kodi yotsatira?

Kodi mutha kuchita bwino kuposa machitidwe awiri a ACT? Inde ndi ayi, chifukwa masiku ano nthawi zonse zinayi zapamwamba zimagwiritsa ntchito lusoli. Komabe, ngati ACTS sichichotsedwa, akasupe omwe amapanga chidendene cha Achilles amachotsedwa. Kuti muwone machitidwe anu akugwira ntchito, muyenera kuyang'anabe njinga yamoto ya GP, formula imodzi ... kapena msewu! Zowonadi, kuti muthane ndi mantha a valve omwe atchulidwa mwezi watha, akasupe akusinthidwa ndi zida zamakina, monga momwe Ducati amachitira ndi Desmo, kapena makina obwereranso pneumatic. Mtundu wa kuyimitsidwa kwa Fournalès kumagwiritsidwa ntchito pa injini. Sipadzakhalanso kusweka kwa masika, kulibenso mantha, kulemera kochepa ndipo pamapeto pake zokolola zambiri. Kudzipereka kumathamanga kwambiri (17/20 rpm). Komabe, imathandiziranso malamulo "ovuta" a cam omwe amagwira ntchito m'njira zotsika.

Nthano: Chisinthiko chomaliza pakugawa: kukumbukira pneumatic. Imalowetsa kasupe wamakina ndi silinda yodzaza ndi mpweya wopanikizika.

Bokosi: Chifukwa chiyani musinthe ma valve?

M'kupita kwa nthawi, mphamvu ya valve yotsutsana ndi mpando pamapeto pake imayambitsa kuthetsa. Izi zimabweretsa kutsika kwapang'onopang'ono kwa valavu mumutu wa silinda. Ndipotu, tsinde limakwezedwa ndipo kusiyana koyambirira kumachepetsedwa mpaka kutayika kwathunthu. Chotsatira chake, valavu, yomwe imakula ndi kutentha, imakanizidwa nthawi zonse ndi camshaft ndipo sichimatsekanso mpweya wokwanira. Pansi pazimenezi, kusakaniza kumatuluka panthawi yoyaka, kuyaka mpando, womwe umatha mofulumira kwambiri ndipo umakhala wopanda madzi ... zopatsa mphamvu. Choncho kumatentha kwambiri. Kuchita kwa injini kumawonongeka, kugwiritsa ntchito komanso kuipitsa kumawonjezeka nthawi imodzi. Kuzizira kumayambanso kumakhala kovuta kwambiri. Panthawi imodzimodziyo, kukangana kosalekeza kwa matepi pa camshaft kumayambitsa kuvala pa kugawa, zomwe pamapeto pake zidzagwirizana. Ndiye m'pofunika kusintha pushers ndi camshaft .... Ndi bwino kusintha masewero pa mavavu mavuto asanayambe!