BMW N46B18 cav
Txheem
Tus yau tshaj version ntawm N46 kab ntawm lub hwj chim units - N46B18, tau tsim nyob rau hauv lub hauv paus ntawm N46B20 thiab tau tsim txij li thaum 2004, thiab tsuas yog rau BMW E46 316 tsheb. Nyob rau hauv nruab nrab-2006, nyob rau hauv kev twb kev txuas nrog cov kev taw qhia ntawm lub BMW E90, tag nrho cov qauv E46 raug tshem tawm tag nrho los ntawm cov kab sib dhos, tab sis lub cav no tsis tau ua tiav kev faib khoom loj.
N46B18 yog thawj zaug npaj los hloov rau nws cov thawj coj, N42B18, thiab tau txais kev hloov kho crankshaft, hloov kho qhov sib npaug thiab cov pas nrig sib txuas, nrog rau qhov sib txawv kiag li: lub tog raj kheej lub taub hau npog thiab lub sij hawm saw tensioner. Lub N46B18 tau nruab nrog (tshiab): kom tsawg manifold, lub tshuab hluav taws xob thiab lub txim hluav taws xob.
Tsis zoo li tus qauv N46, nws qhov sib txawv ntawm 1.8-liter muaj: lub crankshaft uas tau txais ib tug luv luv stroke (81 hli); pistons nrog compression piv ntawm 10.2; tus neeg sau zoo tib yam - tsis muaj DISA. Valvetronic tau koom ua ke rau hauv Bosch ME 9.2 system.
N46B18 fais fab nroj tsuag, zoo li nws 2-liter version, muaj ib tug xov tooj ntawm lwm yam qauv tsim nyob rau hauv yuav luag tib lub hauv paus.
Nyob rau hauv 2011, lub N46B18, zoo li lwm yam nyob rau hauv-line roj av "plaub" los ntawm BMW, tau hloov los ntawm lub tshiab turbocharged engine N13B16, uas yog tsim nyob rau hauv ntau yam kev hloov kho rau niaj hnub no.
Cov yam ntxwv tseem ceeb ntawm BMW N46B18
| Ntim, cm3 | 1796 |
|---|---|
| Max zog, hp | 116 |
| Max torque, Nm (kgm) / rpm | 175 (18) / 3750 |
| Kev siv, l / 100 km | 7.8 |
| Hom | Inline, 4-lub tog raj kheej, injector |
| Lub tog raj kheej diam, mm | 84 |
| Max zog, hp (kW)/r/min | 116 (85) / 5500 |
| Compression piv | 10.2 |
| Piston mob stroke, hli | 81 |
| Qauv | 316 ib 46 |
| Resource, sab nraud. km | 250 + |
Kev ntseeg tau thiab qhov tsis zoo ntawm N46B18
Yav tas los
- Kom nkag tau manifold
- Exhaust camshaft
- Sib pauv peev xwm
Txais:
- Kev siv roj ntau ntxiv thiab xau
- Lub cav suab nrov, kev vibration
- Teeb meem nrog Valvetronic, roj twj, KVKG thiab lub tshuab nqus tsev twj
Lub ntsiab yog vim li cas rau cov tsos ntawm cov roj burns nyob rau hauv lub N46B18, raws li nyob rau hauv lub 42nd engine, yog siv cov roj tsis zoo lub cev muaj zog. Qhov teeb meem kuj tuaj yeem yog vim qhov ua tsis tiav valve seals.
Qhov no feem ntau tshwm sim tom qab ib mais ntawm 50-100 txhiab km. Cov roj tsis pom zoo los ntawm cov chaw tsim khoom yuav ua rau muaj teeb meem ntxiv. Piv txwv li, nrog tib Valvetronic, roj twj tso kua mis, crankcase qhov cua valve thiab lwm yam. Hauv qhov no, nws yeej tsis tsim nyog txuag ntawm kev saib xyuas.
Tsis tas li ntawd, tom qab ib mais deb ntawm 50 txhiab km, lub tog raj kheej taub hau gasket thiab lub tshuab nqus tsev twj tso kua mis feem ntau yuav tsum tau hloov.
Qhov ua rau kev vibration thiab unnatural engine suab nrov feem ntau yog nyob rau hauv lub sij hawm tensioner los yog ib tug stretched saw. Tom qab ib mais deb ntawm 100-150 txhiab km, cov teeb meem no tsis tshua muaj tshwm sim.
Txhawm rau txo qhov tshwm sim ntawm cov teeb meem ntawm lub cav, nws raug nquahu kom hloov cov roj raws sijhawm, lossis ntau zaus, uas yuav tsum yog thawj thiab pom zoo los ntawm cov chaw tsim khoom. Tsis tas li ntawd, nws yog ib qho tseem ceeb uas yuav tsum tau siv cov roj av kom zoo thiab ua haujlwm raws sijhawm.
Tuning muaj peev xwm
Ib yam li lwm lub 4-lub tog raj kheej sab hauv combustion xyaw nrog lub ntim me me, N46B18 yog qhov zoo rau kev sib hloov, tab sis nws tsis tsim nyog rau kev sib tw thiab tib txoj hauv kev txaus los ua kom muaj zog hauv nws cov ntaub ntawv yuav yog nti tuning. Feem ntau yuav, lub studio tuning yuav nruab ib lub xoom-kuj lim, uas yuav raug coj mus rau pem hauv ntej bumper, txiav tawm lub catalyst thiab tag nrho re-flash lub system. Tag nrho cov no yuav tso cai rau koj los ua kom muaj zog thiab tau txais +10 hp. Rau ib yam dab tsi loj, koj yuav tau nruab ib lub cav 6-lub tog raj kheej.
