BMW M52B25 injini
Zamkatimu
BMW M52 mndandanda ndi m'badwo wachiwiri wa injini BMW ndi 24 mavavu. M'badwo uwu udachokera ku zomwe zidagwiritsidwa ntchito m'mainjini am'mbuyomu a M50.
M52B25 ndi imodzi mwa mayunitsi ambiri a mndandanda M52 (imaphatikizaponso zitsanzo M52B20, M52B28, M52B24).
Idawonekera koyamba pamsika mu 1995.
Kufotokozera ndi mbiri ya injini
M52B25 ndi injini zisanu ndi imodzi yokhala ndi ma camshaft awiri. Kukonzekera kwa M52B25 pansi, poyerekeza ndi M50TU, kunakhalabe chimodzimodzi, koma chipika chachitsulo chinasinthidwa ndi aluminiyamu yopepuka kwambiri yokhala ndi zokutira zapadera za nikasil za masilinda. Ndipo yamphamvu mutu gasket (yamphamvu mutu) mu M52B25 anapangidwa multilayer.
Pistoni ndi ndodo zolumikizira zasinthanso poyerekeza ndi zitsanzo za M50 (ndodo yolumikizira M52B25 pano ili ndi kutalika kwa 140 mm, ndi kutalika kwa pisitoni ndi 32,55 mm).
Komanso, dongosolo lapamwamba kwambiri la kudya ndi kusintha kwa gawo la gasi linayambika mu M52B25 (inapatsidwa dzina lakuti VINOS ndipo kenako inayikidwa pafupifupi injini zonse za BMW).
Nozzles pa M52B25 ayenera kutchulidwa mwapadera - ntchito yawo inali 190 cc (cc - kiyubiki centimita, ndiko kuti, masentimita kiyubiki).
M'chaka chomwechi, injiniyo inakhalanso ndi kusintha kwina - monga chotsatira, pansi pa chizindikiro cha M52TUB25 (TU - Technical Update) chinawonekera. Zina mwazatsopano zofunika za M52TUB25, ziyenera kudziwidwa:
- wachiwiri wowonjezera gawo losinthira pa shaft yotulutsa (Double-VANOS system);
- mphamvu zamagetsi;
- camshafts atsopano (gawo 244/228, kwezani 9 millimeters);
- kusintha kwa ndodo yolumikizira ndi gulu la pistoni;
- mawonekedwe a madyedwe osiyanasiyana a DISA;
- kusintha njira yozizira.
Nthawi zambiri, ICE yosinthidwa idakhala yocheperako kuposa mtundu woyambira wa M50B25 - kutsindika kunali kosiyana kotheratu.
Kuyambira 2000, injini za BMW M52B25 zinayamba kusinthidwa ndi chitsanzo chatsopano cha 2,5-lita sita-silinda - M54B25. Pamapeto pake, kale mu 2001, kupanga BMW M52B25 kunayimitsidwa ndipo sikunayambenso.
| Wopanga | Munich Plant ku Germany |
|---|---|
| Zaka zakumasulidwa | 1995 mpaka 2001 |
| Voliyumu | Masentimita 2494 masentimita |
| Zida za Cylinder Block | Aluminium and Nikasil alloy |
| Mtundu wamagetsi | Jekeseni |
| mtundu wa injini | Sikisi-silinda, pamzere |
| Mphamvu, mu mahatchi / rpm | 170/5500 (zamitundu yonse) |
| Torque, mu Newton mita / rpm | 245/3950 (zamitundu yonse) |
| Kutentha kotentha | + 95 digiri Celsius |
| Moyo wa injini muzochita | Pafupifupi makilomita 250000 |
| Kupweteka kwa pisitoni | 75 mamilimita |
| Cylinder m'mimba mwake | 84 mm |
| Kugwiritsa ntchito mafuta pamtunda wa makilomita zana mumzinda komanso pamsewu waukulu | 13 ndi 6,7 malita motsatana |
| Kuchuluka kwamafuta ofunikira | 6,5 malita |
| Kugwiritsa ntchito mafuta | Kufikira 1 lita pa 1000 kilomita |
| Miyezo yothandizidwa | Euro-2 ndi Euro-3 |
Chiwerengero cha injini ili pa mbali ya zobweza zambiri (makamaka, pansi pa izo), pafupifupi m'dera pakati pa silinda wachiwiri ndi wachitatu. Ngati mungofunika kuyang'ana chiwerengerocho, ndi bwino kugwiritsa ntchito tochi pa telescopic mlongoti. Ngati mukufuna kuyeretsa chipindacho kuchokera ku dothi, ndiye kuti mungafunike kumasula bokosilo ndi fyuluta ya mpweya kuchokera ku mpweya.
Ndi magalimoto ati omwe adaikidwapo
Mtundu waukulu wa injini ya M52B25 idayikidwa pa:
- BM 523i E39;
- BMW Z3 2.5i Roadster;
- BMW 323i;
- BMW 323ti E36.
Mtundu wa M52TUB25 woyikidwa pa:
- BM 523i E39;
- BMW 323i E46 B.
Mavuto ndi kuipa kwa BMW M52B25 injini
- Monga mayunitsi a mndandanda wapita M50, injini M52B25 amakonda kutenthedwa, chifukwa, nthawi zina, yamphamvu mutu akhoza kulephera. Ngati mphamvu yamagetsi yayamba kale kutenthedwa, woyendetsa galimoto ayenera kutulutsa mpweya kuchokera ku makina ozizira, kuyeretsa rediyeta, kuyang'ana ntchito ya thermostat ndi kapu ya radiator.
- Ma injini a M52 amatha kugwidwa ndi mphete ya pistoni, zomwe zimapangitsa kuti mafuta achuluke. Ngati makoma a silinda ndi abwinobwino, ndiye kuti muthane ndi vuto ili, ndizotheka kuchita popanda kusintha mphete. Pamene makoma a silinda avala, chipikacho chiyenera kuperekedwa ku ndondomeko ya manja. Komanso, valavu ya crankcase ventilation iyenera kuyang'aniridwa.
- Pakhoza kukhalanso vuto monga kuphika ma hydraulic lifters. Chifukwa cha izi, ntchito ya silinda imachepetsedwa ndipo gawo lowongolera zamagetsi limazimitsa. Ndiko kuti, mwini galimoto ndi injini M52B25 chofunika m'malo mwake zonyamula hayidiroliki.
- Kuwonongeka kwinanso ndiko kuyatsa kwamafuta. Nthawi zambiri izi zimachitika chifukwa cha vuto linalake m'kapu yamafuta kapena pampu yamafuta.
- Kuyenda kwa RPM pomwe injini ya M52B25 ikuyenda kungayambitse kuvala pa VANOS system. Kukonza dongosolo, monga lamulo, m'pofunika kugula zida zapadera zokonzera.
- Pakapita nthawi, ming'alu yowoneka bwino imatha kukhala pazivundikiro za valve ya M52B25. Pankhaniyi, ndi bwino kusintha zikuto zimenezi.
Kuphatikiza apo, mavuto monga kulephera kwa masensa a crankshaft position (DPKV) ndi masensa a camshaft position (DPRV), kuvala kwa ulusi kwa ma bolts a silinda, kutaya kulimba kwa thermostat ndikotheka. Ndikoyeneranso kukumbukira kuti mtundu woyambira umafunikira kwambiri pamtundu wa petulo.
Vuto lina lomwe lingathe kudziwika pophunzira luso lapamwamba (makamaka kwa injini zomwe zili ndi mtunda wofunikira) kugwiritsa ntchito mafuta. Wopanga yekha amalimbikitsa kugwiritsa ntchito mafuta awa - 0W-30, 5W-40, 0W-40, 5W-30, 10W-40.
Kudalirika ndi kusakhazikika
BMW M52B25 mu 1998 dzina lake akatswiri monga injini yabwino mu United States. Kwa zaka zinayi (1997, 1998, 1999 ndi 2000), mndandanda wa injini za M52 zidaphatikizidwa ndi Ward's mukusanja kwake kwa injini khumi zabwino kwambiri pachaka.
Kalekale, kupirira kwake, kudalirika ndi mphamvu zinadabwitsa akatswiri. Koma, monga tanenera kale, otsiriza M52B25 injini anasiya msonkhano pa chiyambi cha m'ma XNUMX.
Kotero, tsopano kugula M52B25 kuyenera kuchitidwa mosamala, kuyang'anitsitsa zonse. Njira yovomerezeka kwambiri ndi injini ya mgwirizano yochokera kunja ndi gwero labwino lotsalira. Ndizofunikira kuti zichotsedwe m'galimoto popanda mtunda wautali. Kunena zoona, injini iyi ndi kavalo wakale yemwe sangawononge mizere, koma nthawi yomweyo, mayunitsi amakono komanso apamwamba angapezeke pogulitsidwa lero.
Ndi chisamaliro cha injini iyi, zinthu ndi ziwiri. Ndi zowonongeka zina, M52B25 ikhoza kukonzedwa bwino, koma kukonzanso kwa chipika cha silinda sikungatheke ku Russia. Chowonadi ndi chakuti kukonza kotereku ndikofunikira kubwezeretsanso zokutira za nicosil pamakoma a silinda, ndipo izi ndizosatheka.
kukonza
Kuti muwonjezere mphamvu ya injini ya M52B25, choyamba muyenera kugula zobweza zambiri ndi kuzizira kuchokera ku injini yofanana ya M50B25, camshafts ndi gawo la 250/250 ndi kukweza mamilimita khumi, ndiyeno ndikukonzekera chip.
Zotsatira zake, zidzatheka "kufinya" kuchokera ku 210 mpaka 220 mahatchi kuchokera ku unit. Palinso njira ina, "makina" njira yowonjezera mphamvu ndi voliyumu yogwira ntchito.
Njira imeneyi ikuphatikizapo kukhazikitsa zida za stroker (zotchedwa zida za zigawo zomwe mungathe kuwonjezera pisitoni ndi 10-15 peresenti) mu chipika cha silinda. Pankhaniyi, mufunika crankshaft, kulumikiza ndodo ndi fimuweya kuchokera M52B28, pamene pistoni ayenera kusiyidwa "mbadwa". Zidzakhalanso zofunika kupereka kudya kuchokera M50B25, ndi camshafts ndi utsi ku S52B32. Ngati ndi kotheka, injini ya M52B25 ndi yabwino kwa turbocharging - chifukwa cha izi, mwiniwake wa galimoto ayenera kugula zida za turbo.
