Engine N42B20 kuchokera BMW - zambiri ndi ntchito
Zamkatimu
Injini ya N42B20 yakhala ikupanga kuyambira 2001 ndipo kugawa kudatha mu 2004. Cholinga chachikulu cha kukhazikitsa unit anali m'malo Mabaibulo akale a injini, monga M43B18, M43TU ndi M44B19. Timapereka chidziwitso chofunikira kwambiri panjinga ya BMW.
Injini ya N42B20 - data yaukadaulo
Kupanga gawo lamagetsi kunachitika ndi chomera cha BMW Plant Hams Hall, chomwe chinalipo kuyambira 2001 mpaka 2004. Injini imagwiritsa ntchito masilinda anayi okhala ndi ma pistoni anayi iliyonse mu dongosolo la DOHC. Kusamuka kwenikweni kwa injini kunali 1995 cc.
Chigawo chamzerewu chinali chodziwika ndi kukula kwa silinda iliyonse kufika 84 mm ndi pisitoni sitiroko 90 mm. Kupanikizika kwapakati 10: 1, mphamvu 143 hp pa 200 nm. Dongosolo la ntchito ya injini ya N42B20: 1-3-4-2.
Kuti mugwiritse ntchito bwino injini, mafuta a 5W-30 ndi 5W-40 adafunikira. Komanso, mphamvu ya thanki ya zinthu inali malita 4,25. Inayenera kusinthidwa 10 12. Km kapena miyezi XNUMX iliyonse.
Kodi BMW unit idayikidwa m'magalimoto ati?
Injini ya N42B20 idayikidwa pamitundu yomwe imadziwika bwino kwa onse okonda magalimoto. Tikukamba za magalimoto BMW E46 318i, 318Ci ndi 318 Ti. Chigawo chofuna mwachilengedwe chinalandira ndemanga zabwino ndipo chikadali panjira lero.
Kuchepetsa thupi komanso kukhathamiritsa kwa torque - izi zidatheka bwanji?
Chigawo ichi chimagwiritsa ntchito chipika cha injini ya aluminiyamu. Izi zinawonjezedwa zitsulo zachitsulo. Iyi ndi njira ina yopangira njira yomwe imagwiritsidwa ntchito nthawi zambiri yopangidwa ndi chitsulo chonyezimira. Kuphatikizika kumeneku kunapangitsa kulemera kopepuka poyerekeza ndi ma injini akale a BMW okhala pakati-anayi.
Kukhathamiritsa kwa torque kumatheka pogwiritsa ntchito makina osinthika amagetsi oyendetsedwa ndi magetsi. Dongosololi limatchedwa DISA komanso lidawongolera magawo amagetsi pa liwiro lotsika komanso lalitali. Chowonjezeranso pa izi ndi Bosch DME ME9.2 jakisoni wamafuta.
Zosankha zoyambira
Mkati mwa chipika cha silinda muli crankshaft yatsopano yokhala ndi sitiroko ya 90 mm, ma pistoni ndi ndodo zolumikizira. Injini ya N42B20 inalinso ndi ma shafts ofanana ndi injini ya M43TU.
Mutu wa DOHC wa 16 valve, womwe umapangidwanso kuchokera kuzinthu izi, umakhala pa chipika cha aluminiyamu. Zinali zodumpha kwenikweni zaukadaulo, monga momwe zida zoyambira zamoto zimagwiritsira ntchito mitu 8 ya SOHC yokha.
N42B20 imaphatikizansopo Valvetronic variable valve lift ndi unyolo wanthawi. Komanso, okonzawo adaganiza zokhazikitsa ma camshafts awiri okhala ndi nthawi yosinthika ya valve - Double Vanos system.
Ntchito Yoyendetsa Unit - Mavuto Odziwika Kwambiri
Chimodzi mwazovuta za njinga yamoto ndi kutentha kwambiri. Kawirikawiri izi zinali chifukwa cha kuipitsidwa kwa radiator. Njira yabwino yodzitetezera inali kuyeretsa nthawi zonse. Thermostat yowonongeka ingakhalenso chifukwa chake - apa yankho ndilokhazikika m'malo mwa 100 XNUMX aliwonse. km.
Zisindikizo za tsinde za ma valve zimayambanso kuvala, zimasiya kugwira ntchito ndipo, chifukwa chake, kugwiritsa ntchito mafuta a injini kumawonjezeka. Palinso mavuto okhudzana ndi dongosolo lozizira. Injini ya N42B20 imathanso kukhala yaphokoso - yankho lazovuta zokhudzana ndi phokoso ndikulowetsa cholumikizira nthawi. Izi ziyenera kuchitika pamtunda wa 100 km.
Ndikofunikiranso kuyang'anira momwe ma coil amayatsira a BREMI. Amatha kulephera posintha ma spark plugs. Pankhaniyi, sinthani ma coils ndi ma coil oyatsira a EPA. Mafuta a injini omwe amavomerezedwa ndi wopanga magalimoto ndi ofunikiranso kuti ayendetse bwino njinga yamoto. Kulephera kutero kudzafunika kukonzanso kusonkhanitsa ndi kukonzanso dongosolo la Vanos.
Injini ya N42 B20 - ndiyoyenera kusankha?
Motor 2.0 kuchokera ku BMW ndi gawo lopambana. Ndizopanda ndalama ndipo kukonzanso kwa munthu kumakhala kotsika mtengo - msika uli ndi kupezeka kwakukulu kwa zida zosinthira, ndipo zimango nthawi zambiri zimadziwa bwino mawonekedwe a injiniyo. Ngakhale zili choncho, chipangizocho chimafunikira kuyang'anitsitsa nthawi zonse ndikusamalidwa bwino.
Chipangizocho ndi choyeneranso kukonza chip. Pambuyo pogula zinthu zoyenera, monga kulowetsa mpweya wozizira, Cat Back exhaust system ndi makina oyang'anira injini, kusinthidwa kumakupatsani mwayi wowonjezera mphamvu ya unit mpaka 160 hp. Pachifukwa ichi, injini ya N42B20 ikhoza kukhala yankho labwino.
