N55 cav - cov ntaub ntawv tseem ceeb tshaj plaws ntawm lub tshuab

Lub cav tshiab N55 yog BMW thawj zaug twin-scroll turbocharged petrol engine nrog Valvetronics thiab ncaj qha roj txhaj. Nyeem txog BMW technologies thiab N55 specifications.

N55 cav - dab tsi yog qhov tsim ntawm chav tsev?

Thaum tsim cov qauv tsim ntawm N55 roj av cav, nws tau txiav txim siab los siv ob lub camshafts - qhib thiab lamellar tsim - nrog ib qho txhuas crankcase uas nyob ib sab ntawm lub cav. Lub crankshaft yog ua los ntawm cam khwb cia hlau thiab lub tog raj kheej taub hau yog ua los ntawm txhuas. Cov qauv tsim kuj suav nrog cov khoom noj khoom haus nrog lub cheeb ntawm 32,0 mm. Nyob rau hauv lem, lub intake li qub tau ntim nrog sodium.

N55 siv ob-scroll turbocharger. Nws yog txawm peem rau nrog ob tug nyias screws uas coj cov pa pa gases mus rau lub turbine. Raws li tau hais ua ntej, kev sib xyaw ntawm turbocharging nrog kev txhaj tshuaj ncaj qha thiab Valvetronic kuj tseem tshiab rau N55.

Yuav ua li cas Valvetronic system ua haujlwm

Valvetronic yog ib qho ntawm cov thev naus laus zis tshiab siv los ntawm BMW. Qhov no yog ib qho infinitely variable intake valve nqa, thiab nws siv tshem tawm qhov yuav tsum tau rau nruab ib lub throttle.

Lub tshuab tswj cov huab cua loj uas tau muab rau combustion rau lub tshuab tsav. Kev sib xyaw ua ke ntawm peb lub tshuab (turbo, ncaj qha roj txhaj tshuaj thiab Valvetronic) ua rau muaj kev txhim kho cov yam ntxwv ntawm kev sib txuas thiab txhim kho lub cav teb zoo dua piv rau N54.

Variations ntawm BMW N55 powertrain

Lub hauv paus cav yog N55B30M0, uas pib ntau lawm hauv 2009.

1. Nws lub zog yog 306 hp. ntawm 5-800 rpm;
2. Lub zog torque yog 400 Nm ntawm 1-200 rpm.
3. Tus tsav tau nruab rau ntawm BMW tsheb nrog 35i Performance index.

N55 cav

Ib tug tshiab version ntawm lub turbocharged engine yog N55. Kev faib tawm tau pib txij li xyoo 2010, thiab qhov hloov kho tshiab muab 320 hp. ntawm 5-800 rpm. thiab 6 Nm ntawm torque ntawm 000-450 rpm. Cov chaw tsim khoom siv nws hauv cov qauv nrog qhov ntsuas 1i thiab 300i.

Kev xaiv N55B30O0 thiab N55HP

Kev muag khoom ntawm N55B30O0 pib xyoo 2011. Qhov no ntau yam yog ib qho analogue ntawm N55, thiab cov kev tsis muaj raws li hauv qab no:

• zog 326hp ntawm 5-800 rpm;
• 450 Nm ntawm torque ntawm 1-300 rpm.

Lub cav tau nruab rau ntawm cov qauv nrog qhov ntsuas ntawm 35i.

Lwm qhov kev xaiv, uas tau pib tsim tawm xyoo 2011, yog N55HP. Nws muaj cov kev xaiv hauv qab no:

• zog 340hp ntawm 5-800 rpm. thiab 6 Nm ntawm torque ntawm 000-450 rpm. (overforce 1Nm).

Nws tau siv hauv BMW qauv nrog 35i Performance index.

Chav tsev kuj muaj nyob rau hauv kev ua kis las version (S55 cav nrog txog 500 hp). Nws yog tsim nyog hais tias qhov haib tshaj version ntawm M4 GTS siv dej txhaj.

Tsim qhov sib txawv ntawm BMW N54 thiab N55

Hais txog N55, ib tus tsis tuaj yeem hais txog nws cov thawj coj, piv txwv li. cev n54. Muaj ntau qhov sib xws ntawm cov qauv, xws li cov yam ntxwv uas tau hais dhau los, tshwj tsis yog cov cam khwb cia hlau crankshaft, uas yog 3 kg sib zog dua li ib qho siv ntawm N54.

Tsis tas li ntawd, lub cav N55 tsuas yog siv ib lub turbocharger xwb, tsis yog ob yam li hauv N54B30. Tsis tas li ntawd, hauv N54, txhua tus ntawm 3 lub tog raj kheej yog lub luag haujlwm rau ib lub turbocharger. Nyob rau hauv lem, nyob rau hauv lub N55, lub tog raj kheej yog lub luag hauj lwm rau ib tug ntawm ob tug cab uas tsav lub caij no. Ua tsaug rau qhov no, tus tsim ntawm lub turbocharger yog sib dua los ntawm ntau npaum li 4 kg piv rau cov laus version ntawm chav tsev.

BMW cav ua haujlwm. Cov teeb meem dab tsi tshwm sim thaum siv?

Kev siv lub cav tshiab BMW N55 tuaj yeem ua rau qee qhov teeb meem. Ib qho ntawm feem ntau yog siv roj ntau ntxiv. Qhov no feem ntau yog vim lub crankcase qhov cua valve. Yog li ntawd, nws yog ib qho tsim nyog yuav tsum tsis tu ncua xyuas cov kev mob ntawm cov khoom no.

Qee zaum kuj muaj teeb meem nrog kev pib lub tsheb. Qhov ua rau yog feem ntau burnt hydraulic lifting mechanisms. Tom qab kuaj xyuas cov txheej txheem ntawm qhov chaw, siv cov roj cav zoo.

Koj yuav tsum paub dab tsi txog kev ua haujlwm ntawm chav tsev?

Koj yuav tsum nco ntsoov hloov koj cov roj injectors tsis tu ncua. Lawv yuav tsum ua haujlwm txog li 80 km yam tsis muaj teeb meem. Yog tias lub sijhawm hloov pauv tau pom, lawv txoj haujlwm yuav tsis ua rau muaj teeb meem cuam tshuam nrog ntau lub cav vibrations.

Hmoov tsis zoo, N55 tseem muaj qhov teeb meem nyuaj heev nrog lub twj tso kua roj siab.

Koj twb paub cov specifications ntawm tus kheej BMW unit versions. Lub cav N55, txawm tias muaj qee qhov tsis txaus, tuaj yeem piav qhia tias muaj kev ntseeg siab thiab ruaj khov. Kev saib xyuas tsis tu ncua thiab ua tib zoo mloog cov lus yuav tso cai rau koj siv nws mus ntev.

Duab. lub ntsiab: Michael Sheehan ntawm Flickr, CC BY 2.0