MultiAir

Mitundu ya MultiAir imagwiritsa ntchito ma electro-hydraulic system omwe amayang'anira pawokha mavavu oyendera a silinda iliyonse. Kutengera momwe galimoto ilili posachedwa, dongosololi limasinthira imodzi mwanjira zisanu zazikulu zosinthira valavu mosiyanasiyana komanso kukweza ma valve kosinthika. Komabe, mfundo yomwe ili mu MultiAir motors imalola kuti mitundu ingapo yamagetsi yoyeserera ikukoka molingana ndi sitiroko komanso nthawi.

Makinawa ndi osangalatsa kwambiri, ngakhale osintha zinthu, chifukwa ndikuwonjezeka kwamphamvu yamagetsi ndi makokedwe munthawi yomweyo, amachepetsanso kugwiritsa ntchito mafuta motero kutulutsa mpweya. Lingaliro la yankho ili likuwoneka ngati labwino panjira yochulukirapo yolimbana ndi mayeretsedwe ndi magetsi ang'onoang'ono. Fiat Powertrain Technologies, dipatimenti yomwe idapanga ndi kusanja dongosolo, imati poyerekeza ndi injini yoyaka yamphamvu yofanana, MultiAir imatha kupereka mphamvu zowonjezera 10%, makokedwe ena 15% ndikuchepetsa kugwiritsidwa ntchito mpaka 10%. Chifukwa chake, kupanga kwa mpweya wa CO kudzacheperanso.₂ ndi 10%, zinthu mpaka 40% ndipo NO_x ndi 60% yodabwitsa.

Multiair imachepetsa kudalira kwa kuyenda kwa ma valve pa malo enieni a cam, kotero imapereka ubwino wambiri pa ma valve ochiritsira okhazikika. Mtima wa dongosololi ndi chipinda cha hydraulic chomwe chili pakati pa cam control ndi valavu yoyamwa yofananira. Mwa kulamulira kupanikizika m'chipinda chino, n'zotheka kukwaniritsa kutsegulidwa kwapambuyo pake kapena, mosiyana, kutseka koyambirira kwa valavu yolowera, komanso kutsegula ma valve olowetsamo panthawi yopuma mpweya, zomwe zimatsimikizira kuti mpweya wotuluka mkati umabwereranso. . Ubwino wina wa dongosolo Multiair ndi kuti, monga injini BMW Valvetronic, sikutanthauza throttle thupi. Izi zimachepetsa kwambiri kutayika kwa kupopera, komwe kumawonekera mumayendedwe otsika, makamaka pamene injini ili pansi pa katundu wochepa.