Injini ye-Fiat Multiair: izici zobuchwepheshe nokuhlolwa kwe-Alfa Mito.

Uphiko lweFiat Power Train luphinde lwasimangaza ngento entsha emhlabeni ophithizelayo wamamotho. Ihlome ngobuhlakani, uhlelo lokudla olungakaze lubonwe, iFiat group ihlose ukwenza izinguquko emakethe ngezinjini zayo zeMultiair.

Izinjini zikaphethiloli zinokulinganiselwa okuthile ngokomzimba ekwakhiweni kwazo ukuze zisebenze kahle futhi zingcolise ngokwanele. Omunye wabo isidingo gcina i- inhlanganisela ye-stoichiometric (ingxenye yezingxenye zomoya ezingu-14,7 kuphethiloli ngamunye) ekushiseni kwayo nganoma iyiphi inombolo yokuguqulwa. Lokhu kusho ukuthi uma kungena uphethiloli omncane, umoya omncane kufanele ungene futhi ngokufanayo.

I-intake throttle okwamanje isetshenziselwa ukukhawulela inani lomoya ongena enjinini., ngezinkinga ezibandakanya lokhu: ukulahlekelwa ukusebenza kwevolumu (ngisho nokuvuleka ngokugcwele), ukwehla kwe-torque, ukusetshenziswa okuphezulu, ukuphendula okubambezelekile, njll.
I-Fiat Power Train ithuthukise ubuchwepheshe obuthi ivumela, phakathi kwezinye izinto, ukulahla uvemvane olujabulisayo. Ngokulinganayo Ayinayo i-camshaft yokungenisa, futhi esikhundleni salokho i-compact hydraulic actuator elawulwa yi-valve ye-solenoid ifakiwe.

I-camshaft yendabuko Vs. Uhlelo lwe-Multiair

Ukusebenza

Uhlelo lulula: ikhamera ezungeza njengokuyala kwe-camshaft umfutho kawoyela ku-actuator ye-hydraulic obhekene nokuvula i-valve yokungena. Nge-valve ye-solenoid elawulwa yiyunithi yokulawula, kunqunywa ukuthi lawo mafutha azokwenza yini ukuvuleka kwe-valve yokudonsa. noma ngokuphambene nalokho, izokwehla "i-drain" ngqo ku-crankcase.
Ngokwenza, yini Okufinyelelwayo wukulawula ngokuphelele ukuvuleka kwamavalvu ngokobuhlanga nangesikhathi, ukulawula ngokuphumelelayo umthamo womoya ongeniswa enjinini kanye nendlela okwenziwa ngayo.. Kunezinhlanganisela ezingenakubalwa zokuphakama nezikhathi zokuvula, kusukela emandleni aphezulu kuya ekusetshenzisweni okuncane, ngokusebenzisa izinhlanganisela ezihlukahlukene ezithuthukisa i-torque nokusabela ekuguqukeni okuphansi. Ungakwazi ngisho nokuvula i-valve yokungena izikhathi eziningana emjikelezweni ofanayo ukuze uthuthukise ukugcwaliswa.

Ngokusho komkhiqizo, ngenxa yalolu hlelo olusha lokudla, ukusetshenziswa kwehle ngo-10-15%, amandla athuthukiswa ngo-10% kanye ne-torque yenjini ngo-15%., lokhu cishe njalo kusukela ku-1.750 rpm kuya ku-4.000 rpm, into enzima ukuyifinyelela enjinini kaphethiloli enokunyakaziswa okuphansi kangaka. Iphinde kunciphisa isikhathi sokuphendula yemoto ngaphambi kokucela futhi kwenza ukuqala kube lula, njengoba i-ECU ibamba ngekhanda indawo yamasilinda lapho imisa injini.

Ividiyo yokukhangisa ye-MiTo Multiair

ukukhishwa okuncane

Izinzuzo zokusetshenziswa zibonakala zicacile, kodwa ngaphezu kwalokho lezi zinjini azinayo imikhawulo ye-emissions ukuthi ama-valve ajwayelekile (kanye ne-variable valve timeing) ahlukumezeka. Injini kaphethiloli egijima phezu kwengxube engenawo amandla izokhipha amagesi angcolisa ngokweqile (CO, HC ne-NOx) kanti eyodwa egijima engxubeni ecebile izosebenzisa imali ngokweqile futhi ikhiphe ama-hydrocarbon. Izinjini zomdabu zijwayele ukusebenza ngokuncika emithwalweni ephansi futhi zicebe ngamandla aphelele, zidele ukusebenza kanye nokonga kukaphethiloli. Injini ye-Multiair ingasebenza kungxube ye-stoichiometric kuhlu olukhulu lwemithwalo ye-throttle.

Umkhiqizo ubeka inombolo ekuncishisweni, cishe u-10% ku-CO no-40% ku-HC naku-NOx. Angizange ngiwele ekubuzeni ukuthi ngabe babhekisela esimweni esihle kakhulu noma uma kuyidatha yokusetshenziswa okumaphakathi. Njengedatha, bonisa ukuthi i-NOx ikhiqizwa ikakhulukazi ngengxube ecebile, okungukuthi, isebenza ngomthwalo ogcwele.

Amanani

Ngokusho kweFiat, Uma ikhiqizwa ngochungechunge olukhulu, injini yeMultiair ibiza ngendlela efanayo neyendabuko. Akufanele kukhohlwe ukuthi i-camshaft kanye nezesekeli zigcinwa, kodwa futhi zihlanganisa ama-valve e-solenoid, i-actuator ye-hydraulic kanye nokuthuthukiswa okubiza kakhulu kwesofthiwe elawula uhlelo. Kunoma yikuphi, ukutshalwa kwezimali kweFiat Group kule njini kube namandla kakhulu futhi lesi sibalo kumele sibuyiswe.

Okwamanje le njini itholakala kuphela kuphethroli i-Alfa MiTo. Esikhathini esingangeminyaka engu-2-3 kulindeleke ukuthi ikwazi ukunweba ubuchwepheshe beMultiair izinjini zikaDiesel.

Izintengo zimi kanje:

• MiTo 1.4 Junior 78 hp: 14.700 euros
• I-MiTo 1.4 MultiAir 105 hp Ukuthuthuka: 16.350 euros
• I-MiTo 1.4 MultiAir 105 hp Ehlukile: 17.300 euros
• I-MiTo 1.4 Turbo MultiAir 135 hp Ehlukile: 18.700 euros
• MiTo 1.4 Turbo MultiAir 170 hp Quadrifoglio Verde: 21.000 euros

Esihlokweni esilandelayo ukuhlolwa okuguquguqukayo kwemodeli kanye nokuvela kwami ​​​​kumsebenzi: