Mbali ina ya kudula. Silinda shut-off system
Ogwiritsa ntchito magalimoto amafuna kuti magalimoto awo azidya mafuta ochepa momwe angathere. Choncho, opanga magalimoto ayenera kukwaniritsa zoyembekeza izi, makamaka popereka njira zatsopano zochepetsera kuyaka.
Kutsika kwakhala kukutchuka mumakampani opanga injini kwazaka zingapo tsopano. Tikukamba za kuchepetsa mphamvu za injini ndikuwonjezera mphamvu zawo panthawi imodzimodzi, ndiko kuti, kugwiritsa ntchito mfundoyi: kuchokera ku mphamvu zochepa kupita ku mphamvu zambiri. Zachiyani? Ndiko kuti muchepetse kugwiritsa ntchito mafuta, ndipo panthawi imodzimodziyo muchepetse kutulutsa kwa mankhwala owopsa mumipweya yotulutsa mpweya. Mpaka posachedwa, sikunali kophweka kulinganiza kukula kwa injini yaing'ono ndi kuwonjezeka kwa mphamvu. Komabe, ndi kufalikira kwa jekeseni wamafuta mwachindunji, komanso kusintha kwa kapangidwe ka turbocharger ndi nthawi ya ma valve, kutsitsa kwakhala kofala.
Ma injini otsitsa amaperekedwa ndi opanga magalimoto ambiri. Ena anayesanso kuchepetsa kuchuluka kwa masilindala mmenemo, zomwe zimamasulira kutsika kwamafuta.
Koma palinso umisiri wina wamakono umene ungachepetse kuwononga mafuta. Izi ndi, mwachitsanzo, ntchito ya silinda deactivation yomwe imagwiritsidwa ntchito mu imodzi mwa injini za Skoda. Iyi ndi 1.5 TSI 150 hp petrol unit yomwe imagwiritsidwa ntchito mumitundu ya Karoq ndi Octavia, yomwe imagwiritsa ntchito makina a ACT (Active Cylinder Technology). Kutengera kuchuluka kwa injini, ntchito ya ACT imalepheretsa masilinda anayi anayi makamaka kuti achepetse kugwiritsa ntchito mafuta. Masilinda awiriwa amazimitsidwa pamene mphamvu zonse za injini sizikufunika, monga ngati mukuyendetsa pamalo oimikapo magalimoto, poyendetsa pang'onopang'ono, komanso poyendetsa galimoto pamtunda wokhazikika.
Dongosolo la ACT linagwiritsidwa ntchito kale zaka zingapo zapitazo mu injini ya 1.4 hp Skoda Octavia 150 TSI. Inali injini yoyamba yokhala ndi yankho lotere mu chitsanzo ichi. Pambuyo pake idapezanso njira ya Superb ndi Kodiaq. Zosintha zingapo ndikusintha kwagawo la 1.5 TSI. Malinga ndi wopanga, kugunda kwa ma silinda mu injini yatsopano kumawonjezeka ndi 5,9 mm ndikusunga mphamvu yomweyo ya 150 hp. Komabe, poyerekeza ndi injini ya 1.4 TSI, chigawo cha 1.5 TSI chimakhala ndi kusinthasintha komanso kuyankha mofulumira pakuyenda kwa accelerator pedal. Izi ndichifukwa cha turbocharger yokhala ndi geometry yosinthika ya tsamba, yokonzedwera mwapadera kuti igwire ntchito pamatenthedwe amphamvu a gasi. Kumbali ina, choziziritsa kukhosi, ndiko kuti, choziziritsa cha mpweya chopanikizidwa ndi turbocharger, chapangidwa m’njira yoti chikhoza kuziziritsa katundu wopanikizidwa ku kutentha kwa madigiri 15 okha pamwamba pa kutentha kozungulira. Izi zidzalola kuti mpweya wochuluka ulowe m'chipinda choyaka moto, zomwe zimapangitsa kuti galimoto ikhale yabwino. Kuphatikiza apo, intercooler yasunthidwa patsogolo pa throttle.
Kuthamanga kwa jekeseni wa petulo kwakwezedwanso kuchokera pa 200 mpaka 350 bar. M'malo mwake, kukangana kwa makina amkati kwachepetsedwa. Mwa zina, chotengera chachikulu cha crankshaft chimakutidwa ndi wosanjikiza wa polima. Komano, masilinda apatsidwa njira yapadera yochepetsera kugundana injini ikazizira.
Chifukwa chake, mu injini ya 1.5 TSI ACT yochokera ku Skoda, zinali zotheka kugwiritsa ntchito lingaliro la kuchepetsa, koma popanda kufunikira kochepetsa kusamuka kwake. Powertrain iyi ikupezeka pa Skoda Octavia (limousine ndi station wagon) ndi Skoda Karoq m'makina a automatic transmissions komanso awiri-clutch.
