Enjene ea N57 - tsohle tseo o hlokang ho li tseba

Enjene ea N57 ke ea lelapa la lienjineri tsa diesel tse nang le turbocharger le sistimi e tloaelehileng ea terene. Tlhahiso e qalile ka 2008 mme e felile ka 2015. Re fana ka boitsebiso ba bohlokoa ka ho fetisisa ka eena.

Enjene ea N57 - data ea tekheniki

Enjene ea diesel e sebelisa sistimi ea taolo ea valve ea DOHC. Setsi sa matla sa lisilindara tse tšeletseng se na le lisilindara tse 6 tse nang le lipiston tse 4 ho e 'ngoe le e 'ngoe. Moqomo oa enjene o ne o na le 90 mm, piston stroke 84 mm ka khatello ea 16.5. Hantle-ntle enjene e falla ke 2993 cc. 

Enjene e ile ea ja lilithara tse 6,4 tsa mafura ka lik'hilomithara tse 100 toropong, lilithara tse 5,4 ka lik'hilomithara tse 100 ka potoloho e kopaneng le lilithara tse 4,9 ka lik'hilomithara tse 100 tseleng e kholo. Yuniti e ne e hloka oli ea 5W-30 kapa 5W-40 hore e sebetse hantle. 

Mefuta ea likoloi ho tsoa ho BMW

Ho tloha qalong ea tlhahiso ea lienjineri tsa BMW, ho entsoe mefuta e tšeletseng ea likarolo tsa matla. Kaofela ha bona ba ne ba e-na le bore le stroke ea 84 x 90 mm, ho falla ha 2993 cc le tekanyo ea khatello ea 3:16,5. Mefuta e latelang e ne e le ea lelapa la N1:

• N57D30UL e nang le 150 kW (204 hp) ho 3750 rpm. le 430 Nm ho 1750-2500 rpm. Phetolelo ea bobeli e na le tlhahiso ea 155 kW (211 hp) ho 4000 rpm. le 450 Nm ho 1750-2500 rpm;
• N57D30OL 180 kW (245 hp) ka 4000 rpm. le 520 Nm ho 1750-3000 rpm. kapa 540 Nm ho 1750-3000 rpm;
• N57D30OL 190 kW (258 hp) ka 4000 rpm. le 560 Nm ho 2000-2750 rpm;
• N57D30TOP220 kW (299 hp) ho 4400 rpm. kapa 225 kW (306 hp) ho 4400 rpm. le 600 Nm ka 1500-2500 rpm;
• N57D30TOP(TÜ) 230 kW (313 hp) ho 4400 rpm. le 630 Nm ka 1500-2500 rpm;
• N57D30S1 280 kW (381 hp) ho 4400 rpm. 740 Nm ho 2000-3000 rpm.

Mofuta oa lipapali N57D30S1

Ho ne ho boetse ho e-na le mofuta oa lipapali oa li-supercharger tse tharo, moo ea pele e neng e e-na le geometry ea turbine e feto-fetohang 'me e sebetsa hantle haholo ka lebelo le tlaase la enjene, ea bobeli e le ka lebelo le mahareng, torque e ntseng e eketseha,' me ea boraro e hlahisa litlhōrō tse khutšoanyane tsa matla le torque ka holimo-limo. mojaro - boemong ba 740 Nm le 280 kW (381 hp).

Moralo oa koloi

N57 ke enjene ea inline e pholileng ka metsi a 30 ° e phahameng ka ho fetesisa. E sebelisa li-camshaft tse peli tse holimo - enjene ea diesel. Enjene block e entsoe ka aluminium e bobebe ebile e tšoarella. Likhetla tse kholo tsa crankshaft li entsoe ka motsoako oa cermet.

Ho bohlokoa hape ho hlalosa moralo oa hlooho ea silindara ea enjene. E arotsoe ka likarolo tse peli, moo litsela tsa ho qeta le ho kenya letsoho, hammoho le li-valve, li leng ka tlaase. Bokaholimo bo na le poleiti ea motheo eo li-camshaft li mathang ho eona. Hlooho e boetse e na le mocha oa ho khutlisa khase ea exhaust. Tšobotsi e ikhethang ea N57 ke hore li-cylinders li na le li-liner tse omeletseng tse kopantsoeng ka mocheso ho cylinder block.

Li-camshafts, mafura le turbocharger

Ntho ea bohlokoa ea ts'ebetso ea enjene ke camshaft ea ho tima, e tsamaisoang ke karolo e le 'ngoe ea li-valve tsa ho kenya. Likarolo tse thathamisitsoeng li na le boikarabelo ba ho laola li-valve tsa ho kenya le ho qeta li-cylinders. Ka lehlakoreng le leng, bakeng sa ts'ebetso e nepahetseng ea camshaft e kenang, ketane ea koloi e lehlakoreng la flywheel, e hatelletsoeng ke li-hydraulic chain pullers, e ikarabella.

Ka enjene ea N57, mafura a kenngoa ka khatello ea 1800 ho isa ho 2000 bar ka ho toba ka li-cylinders ka tsamaiso ea Bosch Common Rail. Mefuta e fapaneng e fapaneng ea yuniti ea matla e kanna ea ba le li-turbocharger tse fapaneng tsa mouoane - geometry e fapaneng kapa e kopantsoe le intercooler, e le 'ngoe kapa tse peli.

Ts'ebetso ea mochini oa drive - mathata a kopaneng

Nakong ea ts'ebetso ea sethuthuthu, ho ka etsahala ho se sebetse hantle ho amanang le li-vortex shock absorbers. Ka lebaka la ho se sebetse hantle, enjene e qala ho sebetsa ka tsela e sa tšoaneng, hammoho le liphoso tsa tsamaiso ea matšoao. 

Bothata bo bong ke moloko oa lerata le leholo. Melumo e sa batleheng e bakoa ke sebui se robehileng sa crankshaft. Bothata bo hlaha ka nako e ka bang 100 XNUMX. km le ketane ea nako e hloka ho nkeloa sebaka.

U lokela hape ho ela hloko ho sebelisa mofuta o nepahetseng oa oli. Ka lebaka la sena, tsamaiso e setseng, e kang turbine, e lokela ho sebetsa bonyane lihora tse 200 ntle le mathata. lik'hilomithara.

Enjene ea N57 e loketse ho lokisoa

E 'ngoe ea litsela tse tloaelehileng tsa ho eketsa matla a enjene ke ho ntlafatsa turbocharger. Ka ho kenyelletsa mofuta o moholo kapa mofuta oa lebasetere ho enjene, litekanyo tsa ho tsamaisa moea o kenang li ka ntlafatsoa haholo. Leha ho le joalo, sena se tla amahanngoa le maemo a phahameng a ho tuka ha mafura. 

Basebelisi ba N57 le bona ba etsa qeto ea ho tsamaisa ECU. Ho abela likarolo tse ncha ho batla ho theko e tlase mme ho ntlafatsa ts'ebetso. Tharollo e 'ngoe e tsoang sehlopheng sena ke ho nkela ECU eseng feela, empa le mabokose a tokiso. Tokiso e ka sebetsa le ho flywheel. Karolo e nang le boima bo fokolang e tla ntlafatsa ts'ebetso ea yuniti ea matla ka ho eketsa lebelo la enjene.

Mekhoa e meng ea ho eketsa bokhoni ba enjene e kenyelletsa ho ntlafatsa pompo ea mafura, ho sebelisa li-injection tse phallang haholo, ho kenya hlooho ea cylinder e bentšitsoeng, lisebelisoa tsa ho kenya kapa ho fetola lipapali tsa lipapali, li-exhaust le cam ea litsela.