N57 cav - txhua yam koj xav paub

Lub cav N57 belongs rau tsev neeg ntawm diesel xyaw nruab nrog ib tug turbocharger thiab kev tsheb ciav hlau. Kev tsim khoom pib xyoo 2008 thiab xaus rau xyoo 2015. Peb nthuav qhia cov ntaub ntawv tseem ceeb tshaj plaws txog nws.

N57 cav - technical data

Lub cav diesel siv DOHC valve tswj qhov system. Lub tshuab hluav taws xob rau lub tog raj kheej muaj 6 lub tog raj kheej nrog 4 pistons hauv txhua qhov. Cav lub tog raj kheej bore 90 mm, piston stroke 84 mm ntawm 16.5 compression. Qhov tseeb cav tshem tawm yog 2993 cc. 

Lub cav siv 6,4 litres roj ib 100 km nyob rau hauv lub nroog, 5,4 litres ib 100 km nyob rau hauv lub ua ke voj voog thiab 4,9 litres ib 100 km ntawm txoj kev loj. Chav tsev xav tau 5W-30 lossis 5W-40 roj kom ua haujlwm zoo. 

Motor versions los ntawm BMW

Txij li thaum pib ntawm kev tsim cov cav BMW, rau hom fais fab units tau tsim. Tag nrho cov ntawm lawv muaj ib tug bore thiab stroke ntawm 84 x 90 mm, ib tug hloov ntawm 2993 cc thiab compression piv ntawm 3: 16,5. Cov nram qab no ntau yam belongs rau tsev neeg N1:

• N57D30UL nrog 150 kW (204 hp) ntawm 3750 rpm. thiab 430 Nm ntawm 1750-2500 rpm. Qhov thib ob version muaj qhov tso zis ntawm 155 kW (211 hp) ntawm 4000 rpm. thiab 450 Nm ntawm 1750-2500 rpm;
• N57D30OL 180 kW (245 hp) ntawm 4000 rpm. thiab 520 Nm ntawm 1750-3000 rpm. los yog 540 Nm ntawm 1750-3000 rpm;
• N57D30OL 190 kW (258 hp) ntawm 4000 rpm. thiab 560 Nm ntawm 2000-2750 rpm;
• N57D30TOP 220 kW (299 hp) ntawm 4400 rpm. los yog 225 kW (306 hp) ntawm 4400 rpm. thiab 600 Nm ntawm 1500-2500 rpm;
• N57D30TOP (TÜ) 230 kW (313 hp) ntawm 4400 rpm. thiab 630 Nm ntawm 1500-2500 rpm;
• N57D30S1 280 kW (381 hp) ntawm 4400 rpm. 740 Nm ntawm 2000-3000 rpm.

Cov kev ua si version N57D30S1

Kuj tseem muaj qhov sib txawv ntawm peb-supercharger sib txawv, qhov twg thawj zaug muaj qhov sib txawv ntawm cov turbine geometry thiab ua haujlwm zoo heev ntawm lub cav qis, qhov thib ob ntawm qhov nruab nrab ceev, nce torque, thiab qhov thib peb tsim luv luv peaks ntawm lub zog thiab lub zog siab tshaj plaws. load - nyob rau theem ntawm 740 Nm thiab 280 kW (381 hp).

Tsav tsim

Lub N57 yog 30 ° supercharged, dej-txias inline cav. Nws siv ob qho nyiaj siv ua haujlwm camshafts - lub cav diesel. Lub cav thaiv yog ua los ntawm lub teeb yuag thiab ruaj khov aluminium. Lub crankshaft lub ntsiab bearing plhaub yog ua los ntawm cermet alloy.

Nws tseem tsim nyog piav qhia txog tus qauv tsim ntawm lub cav lub tog raj kheej lub taub hau. Nws tau muab faib ua ob ntu, qhov twg cov pa tawm thiab cov khoom siv nkag, nrog rau cov li qub, nyob hauv qab. Sab saum toj muaj lub hauv paus phaj uas cov camshafts khiav. Lub taub hau kuj tau nruab nrog cov pa roj recirculation channel. Ib tug yam ntxwv feature ntawm N57 yog hais tias lub tog raj kheej muaj qhuav liners thermally bonded rau lub tog raj kheej thaiv.

Camshafts, roj thiab turbocharger

Ib qho tseem ceeb ntawm kev ua haujlwm ntawm lub cav yog qhov tso tawm camshaft, uas yog tsav los ntawm ib qho ntawm cov khoom noj khoom haus. Cov khoom uas tau teev tseg yog lub luag haujlwm rau kev tswj cov khoom noj thiab cov pa tawm ntawm lub tog raj kheej. Nyob rau hauv lem, rau kev ua haujlwm kom raug ntawm cov khoom siv camshaft, tsav saw ntawm flywheel sab, tensioned los ntawm hydraulic saw pullers, yog lub luag haujlwm.

Hauv lub cav N57, roj tau txhaj ntawm qhov siab ntawm 1800 txog 2000 bar ncaj qha rau hauv lub tog raj kheej ntawm Bosch Common Rail system. Cov kev sib txawv ntawm lub zog sib txawv tuaj yeem muaj cov pa roj turbochargers sib txawv - qhov sib txawv geometry los yog ua ke nrog intercooler, ib lossis ob.

Kev ua haujlwm ntawm lub tshuab tsav - teeb meem ntsib

Thaum lub sijhawm ua haujlwm ntawm lub maus taus, malfunctions txuam nrog vortex shock absorbers tuaj yeem tshwm sim. Raws li ib tug tshwm sim ntawm ib tug malfunction, lub cav pib khiav unevenly, raws li zoo raws li lub teeb liab system yuam kev. 

Lwm qhov teeb meem yog tsim cov suab nrov ntau. Cov suab tsis xav tau yog qhov tshwm sim ntawm qhov tawg crankshaft silencer. Qhov teeb meem tshwm sim ntawm kev khiav ntawm 100 XNUMX. km thiab lub sij hawm saw yuav tsum tau hloov.

Koj yuav tsum tau xyuam xim rau kev siv hom roj kom raug. Ua tsaug rau qhov no, qhov seem ntawm lub kaw lus, xws li lub tshuab hluav taws xob, yuav tsum khiav tsawg kawg 200 teev yam tsis muaj teeb meem. kilometers.

N57 cav haum rau tuning

Ib txoj hauv kev zoo tshaj plaws los txhawb lub zog ntawm lub cav yog hloov kho lub turbocharger. Los ntawm kev ntxiv ib tug loj version los yog ib tug hybrid version rau lub cav, lub intake cua xa tsis tuaj yeem txhim kho tau zoo. Txawm li cas los xij, qhov no yuav cuam tshuam nrog qib siab ntawm cov roj combustion. 

N57 cov neeg siv kuj txiav txim siab kho ECU. Reassigning units kuj pheej yig thiab txhim kho kev ua tau zoo. Lwm qhov kev daws teeb meem los ntawm pawg no yog kev hloov pauv tsis yog ECU nkaus xwb, tab sis kuj yog lub thawv tu. Tuning tuaj yeem siv rau lub flywheel. Ib qho kev tivthaiv uas tsis tshua muaj huab hwm coj yuav txhim kho kev ua haujlwm ntawm lub zog hluav taws xob los ntawm kev ua kom lub cav ceev.

Lwm txoj hauv kev los ua kom muaj peev xwm ntawm lub cav muaj xws li kev txhim kho lub twj tso kua mis, siv cov twj tso kua mis siab, txhim kho lub tog raj kheej lub taub hau, cov khoom siv los yog kev ua kis las catalytic converter, tso pa tawm thiab txoj kev cam.