BMW 750d xDrive yatsopano ndi mtundu waku Bavaria wokhala ndi injini ya dizilo yamphamvu kwambiri kuposa kale lonse.
M'magawo apansi, injini za Dizilo zakhala zikutayika. Kudzudzula chifukwa cha malamulo okhwima a chilengedwe, omwe apangitsa kuti injini za dizilo zikhale zokwera mtengo kupanga. Ndipo, ndithudi, ubwino wa injini zatsopano za petulo.Mu gawo lapamwamba vutoli kulibe, chifukwa chakuti mtengo wa kupanga si nkhani. Makasitomala ali okonzeka kulipira chilichonse chomwe angafune kuti apeze zomwe akufuna.
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Ngakhale ndi dizilo wapamwamba! Monga momwe zilili ndi BMW 750d xDrive yatsopano, saloon yapamwamba yolemera matani oposa awiri yokhala ndi injini ya dizilo ya 3.0 lita yokhala ndi ma turbo anayi okwera motsatizana. Zotsatira zake ndi izi:
Monga mukuonera, 750d yatsopano ndi locomotive yeniyeni ya dizilo, yomwe imatha kuthamanga kuchokera ku 0-100 km / h m'masekondi 4.6 okha komanso kuchokera ku 0-200 km / h m'masekondi 16.8 okha. Kugwiritsa ntchito malonda (NEDC cycle) ndi 5.7 l / 100km - pamapeto pake ndi msomali wotembenuzidwa pamwamba pa accelerator ndizotheka kufikira izi.
Apo ayi, ziwerengero za injini iyi ndizochuluka: pa 1,000 rpm (osagwira ntchito) injini iyi imapereka 450 Nm ya torque (!) , koma ndi pakati pa 2000 ndi 3000 rpm kuti mtengowu ufika pachimake, 760 Nm ya torque. Pa 4400 rpm tidafika mphamvu yayikulu: 440 hp yabwino.
Mwa izi, pali mtundu umodzi wokha womwe umachita bwino, Audi. Koma zimafunika masilindala ambiri ndi kusamuka zambiri, tikukamba za V8 TDI latsopano la Audi SQ7.
Kuyika mtengo wake m'malingaliro athu tinachita chidwi kwambiri. BMW 750i xDrive yoyendetsedwa ndi petulo yokhala ndi 449 hp imangotenga masekondi 0.2 kucheperapo kuchokera ku 0-100 km/h kuposa 750d xDrive.
Pakuti tsopano, injini izi likupezeka mu BMW 7 Series, koma n'kutheka kuti posachedwapa adzaonekera zitsanzo zina monga BMW X5 ndi X6. Bwerani iwo!
Kodi BMW idapeza bwanji mfundo izi?
BMW inali mtundu woyamba kusonkhanitsa ma turbo atatu motsatizana, ndipo tsopano ndi mpainiyanso pakuphatikiza ma turbo anayi motsatana mu injini ya dizilo.Monga mukudziwira, ma turbos amafunika kutuluka kwa mpweya kuti agwire ntchito - tiyeni tiyiwale za zosiyana ndi lamuloli, monga Audi electric turbos kapena Volvo compressed-air turbos, chifukwa sichoncho.
Injini iyi ya 3.0 litre six-cylinder imayendetsa ma turbos awiri okha nthawi imodzi. Popeza pali mpweya wochepa, zimakhala zosavuta kuyika ma turbos ang'onoang'ono kuti agwire ntchito, motero kupewa zomwe zimatchedwa "turbo-lag". Zachidziwikire pama rev apamwamba, ma turbos awa sakwanira…
Ichi ndichifukwa chake pamene injini liwiro likuwonjezeka, monga pali kuwonjezeka otaya ndi kupsyinjika kwa mpweya utsi, kulamulira magetsi injini amapereka dongosolo throttle kutengerapo mpweya onse utsi ku 3rd variable geometry Turbo.
Kuchokera pa 2,500 rpm, turbo yayikulu ya 4 imayamba kugwira ntchito, yomwe imathandizira kwambiri kuyankha kwa injini pa liwiro lapakati komanso lalitali.
Chifukwa chake, chinsinsi cha mphamvu ya injini iyi ndimasewera olumikizana ndi turbo ndi mpweya wotulutsa mpweya. Zodabwitsa sichoncho?
Ngati mutu wa "superdiesel" ukukweza chidwi chanu, tidzatha kubwereranso ku nkhaniyi posachedwa. Tisiyeni malingaliro anu pa Facebook yathu ndikugawana zomwe tili nazo.