Injini ye-M52B20 - izici zeyunithi kusuka ku-BMW!

Injini ye-M52B20 ayizange ishiye izitolo zokukhiqiza kusukela ngo-2000. Ithathelwe indawo imodeli ye-M54. Iyunithi ephezulu yathuthukiswa ngokuguqulwa okuthathu. Phakathi neminyaka yokuthengisa, injini isiphinde yathuthukiswa kaningi. Sethula izindaba ezibalulekile mayelana nale drayivu!

Injini ye-M52B20 - idatha yobuchwepheshe

Imboni okwaphuma kuyo izinjini ze-M52B20 kwakuyimboni ye-Bavarian Plant Group, ephethwe yi-BMW, ​​esebenza kusukela ngo-1992 futhi etholakala eMunich. Njengoba kushiwo ngaphambili, iyunithi yamandla yakhiqizwa kusukela ngo-1994 kuya ku-2000. 

I-M52B20 iyinjini kaphethiloli enamasilinda ayisithupha esemgqeni enamavalvu amane isilinda ngasinye ohlelweni lwe-DOHC. Ngesikhathi esifanayo, ububanzi piston - 80 mm, futhi unhlangothi yayo - 66 mm. Ngokulandelayo, umthamo ophelele wokusebenza ngu-1991 cc.

Le njini engu-2.0-litre ngokwemvelo efisayo enama-stroke amane ine-compression ratio engu-11:1 futhi ithuthukisa u-148 hp. Ukuyisebenzisa, sebenzisa amafutha angu-0W-30, 0W-40, 5W-30 noma 5W-40 futhi uwashintshe njalo ngemva kuka-10-12 km. km noma njalo ngezinyanga eziyisi-6.5. Ithangi lezinto linamandla amalitha ayi-XNUMX.

Amamodeli ezimoto lapho injini ifakwe khona

Injini ye-M52B20 inike amandla uchungechunge lwesithathu lwe-E36 kanye nochungechunge lwesihlanu lwe-E39. Onjiniyela be-BMW basebenzise le ngqungquthela ezimotweni ze-E46 kusukela ngasekupheleni kweminyaka yama-90s, kanti injini iphinde yavela ku-E38 7 Series kanye ne-E36/E37 Z3.

Idizayini yeDrayivu

Injini engu-52 litre inline six-cylinder ingeye-MX series. Ngenxa yalesi sizathu, kukhona ukufana okuningi ekwakhiweni phakathi kwale modeli nokuhluka kwe-M52B24, M52B25, M52B28 kanye ne-S52B32. Ibhulokhi ye-M52B20 ithathe indawo yemodeli ye-M50B20.

Abaklami be-BMW banqume ukusebenzisa i-aluminium cylinder block. Lesi sici siphinde sasetshenziswa ukwenza ikhanda le-DOHC elinamavalvu angama-32. Uma kuqhathaniswa nokuhluka kwe-M50B20, ama-piston amasha sha kanye nezinduku zokuxhuma ezinde ezingu-145 mm nazo ziyasetshenziswa. 

Imishini yenjini ihlanganisa nesistimu ye-valve eguquguqukayo ye-VANOS kuphela ku-camshaft yokudonsa, kanye ne-manifold elula yokufaka, eyenziwe ngepulasitiki. Injini iphinde ibe nama-injection kaphethiloli angu-154cc.

Indlela yokuthuthukisa ukumelana nokugqoka kwama-cylinder liners?

Endabeni ye-M52B20, isendlalelo esengeziwe se-Nikasil sisetshenziswe kuma-cylinder liners. I-coating iqukethe ngokunembile ungqimba lwe-electrophoretically lipophilic lwe-nickel ne-silicon carbide. Ukusetshenziswa kwayo kubangele ukuqina okukhulu kwezingxenye esetshenziswe kuzo, okuqhathaniswa nezakhi zensimbi noma i-chromium.

Izixazululo ezintsha ngo-1998 - idizayini yebhayisikili yathuthukiswa kanjani?

Ngemva kweminyaka emine i-powertrain iqalile ukudayiswa, i-BMW yanquma ukuthatha ezinye izinyathelo zokuthuthukisa umklamo. Ama-cast iron liners afakwe ku-aluminium cylinder block. Ngaphezu kwalokho, izinduku zokuxhuma, ama-pistons kanye nesistimu yokupholisa yakhiwe kabusha ngokuphelele.

Okunye okwengezwe uhlelo lwe-Double-VANOS, i-DISA variable variable geometry intake body kanye ne-electronic throttle body. Ukuphakanyiswa kwevalvu kwakungu-9,0 / 9,0 mm, futhi iyunithi yamandla ebuyekeziwe yayibizwa nge-M52TUB20. Ngo-2000, yathathelwa indawo imodeli ochungechungeni lwe-M54 - iyunithi ye-M2,2B54 enevolumu yamalitha angama-22.

Ukusebenza kanye nezinkinga ezivame kakhulu

Ukungasebenzi kahle okujwayelekile ukuvuza kwe-radiator kanye nokuvuza kwethangi lokunweba. Abasebenzisi bezimoto ezine-M52B20 baphinde bakhononde ngepompo yamanzi ephuthumayo kanye nokungenzi lutho ngokungalingani, okuvame ukubangelwa ivalvu yokulawula engalungile. Kukhona nezinkinga zokumboza ama-valve nokuvuza kukawoyela, kanye nama-valve okusiza aphindwe kabili.

Yini okufanele uyibheke lapho ukhetha injini ye-M52B20?

Kuyaphawuleka lapha ukuthi izinjini M52B20 kukhona amayunithi kahle amadala - owokugcina uneminyaka engaphezu kuka-20 ubudala. Ngenxa yalesi sizathu, cishe, ngamunye wabo une-mileage ephezulu. Iphuzu eliyisihluthulelo ngesikhathi esinjalo wukuhlolwa okuphelele nokuhlonza izingxenye ezigugile kakhulu. 

Okubaluleke kakhulu isimo esihle sesistimu yokusekela injini. Lena isistimu yokupholisa enepompo yamanzi, irediyetha kanye nethangi lokunweba. Lezi zingxenye yizona ezisengozini enkulu yokwehluleka. Ngakho-ke, ngaphambi kokuthenga ibhayisikili, udinga ukuhlola ukusebenza kwabo.

Ngakolunye uhlangothi, izingxenye zangaphakathi njengama-valve, iketango, izinduku zokuxhuma, ama-crank nama-seal zingasebenza ngaphandle kwezinkinga ngisho nokushayela okungaphezu kuka-200 km. km. Ngokwaba isabelomali esithile sokulungiswa kokuqala nokuletha iyunithi esimweni esilungile sobuchwepheshe, injini ye-BMW M52B20 izokubuyisela ngomsebenzi omuhle - naphezu kweminyaka yayo.