Injini ye-N55 - ulwazi olubaluleke kakhulu mayelana nomshini
Okuqukethwe
Injini entsha ye-N55 bekuyinjini yokuqala yakwaBMW ene-twin-scroll turbocharged kaphethiloli eneValvetronics kanye nomjovo kaphethiloli oqondile. Funda mayelana nobuchwepheshe be-BMW kanye nokucaciswa kwe-N55.
Injini ye-N55 - uyini umklamo weyunithi?
Lapho kwakhiwa umklamo wenjini kaphethiloli i-N55, kwanqunywa ukuthi kusetshenziswe ama-camshaft amabili angaphezulu - umklamo ovulekile nowe-lamellar - onekhrankcase ye-aluminium eyayiseduze kwenjini. I-crankshaft yenziwe ngensimbi eyinsimbi kanti i-cylinder head yenziwe nge-aluminium. Idizayini ihlanganisa nama-valve okungena anobubanzi obungu-32,0 mm. Ngokulandelayo, ama-valve okungena agcwele i-sodium.
I-N55 isebenzisa i-twin-scroll turbocharger. Yayifakwe izikulufo ezimbili ezihlukene ezaziqondise amagesi e-exhaust ku-turbine. Njengoba kushiwo ngaphambili, inhlanganisela ye-turbocharging ne-direct fuel injection ne-Valvetronic nayo yayiyintsha ku-N55.
Indlela i-Valvetonic system isebenza ngayo
I-Valvetronic ingobunye bobuchwepheshe bakamuva obusetshenziswa abakwaBMW. Lokhu kungukuphakanyiswa kwe-valve yokungenisa okuguquguqukayo okungapheli, futhi ukusetshenziswa kwayo kuqeda isidingo sokufaka i-throttle.
Ubuchwepheshe bulawula ubuningi bomoya onikeziwe ukuze kushiswe iyunithi yokushayela. Inhlanganisela yamasistimu amathathu (i-turbo, umjovo kaphethiloli oqondile kanye ne-Valvetronic) iphumela ezicini zokuvutha ezithuthukisiwe kanye nokusabela kwenjini okuthuthuke kakhulu uma kuqhathaniswa ne-N54.
Ukuhluka kwe-BMW N55 powertrain
Injini eyisisekelo kwakungu-N55B30M0, eyaqala ukukhiqizwa ngo-2009.
- Amandla ayo angu-306 hp. ngo-5-800 rpm;
- I-torque ingu-400 Nm ku-1-200 rpm.
- Idrayivu ifakwe ezimotweni zakwaBMW ezinenkomba ye-35i.
N55 injini
Uhlobo olusha lwenjini ene-turbocharged yi-N55. Ukusatshalaliswa kuyaqhubeka kusukela ngo-2010, futhi inguqulo ebuyekeziwe inikeza i-320 hp. ngo-5-800 rpm. kanye ne-torque engu-6 Nm ku-000-450 rpm. Umkhiqizi uyisebenzise kumamodeli anenkomba ethi 1i no-300i.
Izinketho ze-N55B30O0 ne-N55HP
Ukuthengiswa kwe-N55B30O0 kwaqala ngo-2011. Lezi zinhlobonhlobo ziyi-analogue ye-N55, futhi imingcele yezobuchwepheshe imi kanje:
- amandla 326 hp ku-5-800 rpm;
- I-torque engu-450 Nm ku-1-300 rpm.
Injini yafakwa kumamodeli anenkomba engu-35i.
Enye inketho, eyaqala ukukhiqizwa ngo-2011, i-N55HP. Inezinketho ezilandelayo:
- amandla 340 hp ngo-5-800 rpm. kanye ne-torque engu-6 Nm ku-000-450 rpm. (i-overforce 1Nm).
Yayisetshenziswa kumamodeli akwaBMW anenkomba ye-35i.
Iyunithi iyatholakala futhi enguqulweni yezemidlalo (injini ye-S55 efinyelela ku-500 hp). Kuhle ukusho ukuthi inguqulo enamandla kakhulu ye-M4 GTS isetshenziswe umjovo wamanzi.
Dizayina umehluko phakathi kwe-BMW N54 ne-N55
Uma sikhuluma nge-N55, umuntu akanakuhluleka ukusho owandulelayo, i.e. iyunithi N54. Kuningi ukufana phakathi kwamamodeli, njengalezi zinto ezishiwo ngaphambilini, ngaphandle kwe-cast-iron crankshaft, elula ngo-3 kg kunaleyo esetshenziswe ku-N54.
Ngaphezu kwalokho, injini ye-N55 isebenzisa i-turbocharger eyodwa kuphela, kunezimbili njengaku-N54B30. Ngaphezu kwalokho, ku-N54, i-cylinders ngayinye yama-3 yayinomthwalo we-turbocharger eyodwa. Ngokulandelayo, ku-N55, amasilinda anesibopho kwesinye sezibungu ezimbili ezishayela lesi sici. Ngenxa yalokhu, idizayini ye-turbocharger ilula ngokufika ku-4 kg uma kuqhathaniswa nenguqulo endala yeyunithi.
Ukusebenza kwenjini ye-BMW. Yiziphi izinkinga eziphakamayo lapho usebenzisa?
Ukusebenzisa injini entsha ye-BMW N55 kungadala izinkinga. Enye yezinto ezivame kakhulu ukusetshenziswa kukawoyela. Lokhu kubangelwa ikakhulukazi i-valve yokungenisa umoya ye-crankcase. Ngakho-ke, kufanelekile ukuhlola njalo isimo sobuchwepheshe sale ngxenye.
Kwesinye isikhathi kuba nezinkinga ngokuqalisa imoto. Isizathu esivame ukushiswa yizindlela zokuphakamisa i-hydraulic. Ngemva kokuhlola isimo sobuchwepheshe bengxenye, sebenzisa amafutha enjini aphezulu.
Yini okudingeka ukwazi mayelana nokusebenza kweyunithi?
Kufanele futhi ukhumbule ukushintsha ama-injection kaphethiloli njalo. Kufanele basebenze ibanga elingu-80 000 km ngaphandle kwezinkinga. Uma isikhathi sokushintsha sibonwa, ukusebenza kwazo ngeke kubangele izinkinga ezihlobene nokudlidliza kwenjini okweqile.
Ngeshwa, i-N55 isenenkinga ecasulayo ngepompo ye-fuel pressure.
Usuyazi kakade imininingwane yezinguqulo zeyunithi ye-BMW ngayinye. Injini ye-N55, naphezu kokushiyeka okuthile, ingachazwa njengethembekile futhi ihlala njalo. Ukunakekela okuvamile nokunaka imilayezo ngokucophelela kuzokuvumela ukuthi uyisebenzise isikhathi eside.
Isithombe. okuyinhloko: UMichael Sheehan nge-Flickr, CC BY 2.0
