Injini ye-BMW N55: Ukwethembeka kanye Nezinkinga Ezivamile

I-N55 ibhekwa kabanzi njengenye yezinjini ezihamba phambili ezihamba phambili ezivela ku-automaker yaseJalimane i-BMW. AbakwaBMW bakhe le njini kusukela ngo-2009 kuya ku-2019 futhi basebenzisa injini emigqeni eminingi yomkhiqizo we-BMW, ​​okuhlanganisa nama-3 Series, 4 Series, nama-5 Series sedans.

Sekushiwo, ingabe injini ye-N55 ithembekile? Kulesi sihloko, sizobheka injini ye-N55 futhi sixoxe ngezinye zezinkinga zokuthembeka kwenjini.

Okuqukethwe
Uhlolojikelele lwenjini ye-BMW N55
Izinkinga ezi-5 ezivame kakhulu nge-BMW N55 injini
    1. Isembozo se-valve nesihlungi samafutha sezindlu zokuvuza kwe-gasket
    2. I-Turbocharger wastegate iyakhala
    3. Ukuhluleka kwephampu yamanzi kagesi
    4. Izinkinga zephampu yamafutha anengcindezi ephezulu (HPFP).
    5. Ukuqhekeka kwepayipi lokushaja
Isiphetho

Uhlolojikelele lwenjini ye-BMW N55

I-BMW N55 iyinjini eyi-turbocharged inline-six-cylinder ehlanganisa ukusebenza, ukonga, nobuchwepheshe obuphambili. I-N55, eyethulwe ngo-2009 njengelandela i-N54, iyinjini yokuqala yokukhiqiza yakwaBMW ukuba nenjini. i-turbocharger eyi-twin-scroll eyodwa.

Idizayini ikhulisa ukusebenza kwe-turbo, inciphisa ukunensa futhi ikhiqize amandla athuthukisiwe kulo lonke ibanga le-rev. Ukwengeza, i-N55 iphinde isebenzise isikhathi se-valvetronic ye-BMW ye-Valvetronic, isikhathi sekhamera ye-VANOS ephindwe kabili, kanye nomjovo oqondile kaphethiloli ukuze usebenze nokusebenza kahle kukaphethiloli.

Injini ye-N55 ithathwa njengenhlobonhlobo futhi isike yavela ezinhlotsheni eziningi zakwaBMW, okukhona kuzo ama-F30 335i kanye ne-F32 435i, ama-coupes E90/E92 335i, kanye nemoto yohlobo lwe-F10 535i, ekhombisa ukuhambisana nezinhlobo ezahlukene zezimoto nendlela yokushayela.

Iphinde inike amandla ama-compact sports coupe afana ne-X3 xDrive35i, X4 xDrive35i, kanye ne-X5 xDrive35i. Khonamanjalo, isixuku esizokwenza kahle kakhulu sizothola injini ene-turbocharged ku-M135i, M235i, ngisho ne-M2 yesizukulwane sokuqala, ethandwa ngabathanda izimoto.

Izinkinga ezi-5 ezivame kakhulu nge-BMW N55 injini

Yize ithathwe njengokwethenjelwa ukwedlula eyandulelayo, kukhona okumbalwa amaphutha ngenjini ye-BMW N55 okumele abashayeli bakuqaphele. Ngezansi, sizochaza izinkinga ezinhlanu ezivame kakhulu:

1. Isembozo se-valve nesihlungi samafutha sezindlu zokuvuza kwe-gasket

The i-valve cover gasket futhi uwoyela isihlungi sezindlu gasket ziphakathi kwezinkinga ezivame kakhulu zokulungisa uma kuziwa enjinini ye-BMW N55. Lawa ma-gasket asetshenziselwa ukuvala izingxenye ezihlukahlukene futhi avimbele uwoyela ukuthi ungangeni ezindaweni lapho ungalimaza khona injini. Kodwa, uma kubhekwa izinga lokushisa eliphezulu lokusebenza kwenjini kanye nezingcindezi, lawa ma-gaskets ajwayele ukonakala ngokuhamba kwesikhathi.

I-gasket yekhava ye-valve ihlala phakathi kwesembozo se-valve nekhanda lesilinda, ivikela phezulu enjini. Ngokuhamba kwesikhathi, i-gasket ingase ibe buthakathaka futhi iqhekeke, amafutha avuzayo. Izimpawu zokuthi kuvuza i-valve cover gasket zifaka iphunga lamafutha avuthayo, ukugeleza kukawoyela ku-exhaust eningi, uwoyela obonakalayo emakhoneni ekhava yevalvu, noma uwoyela enjinini ngokwayo. Uma kungalungiswa, ukuvuza kungadala izinkinga ezengeziwe, okuhlanganisa ukungafihli komlilo noma ukulimala kwezingxenye ezizungezile, njengamakhoyili okushisa.

Udaba luphinde luthinte i-gasket yezindlu zokuhlunga uwoyela, evala indawo yokuhlunga uwoyela kanye nebhulokhi. Lapho le gasket iphuka, kungenzeka ukuthi uwoyela ungene ezingxenyeni ezifana ne alternator noma ibhande. Lokhu kungaholela ezinkingeni zikagesi noma izinkinga ze-accessory drive.

Ukuvuza lapha kuvame ukubonwa ngokungcolisa uwoyela endaweni yokuhlunga kanye nokulahlekelwa kancane kancane kukawoyela futhi kufanele kulungiswe ukuze kugcinwe injini isebenza. I-valve cover gasket kanye ne-oil filter housing gasket kulula kakhulu ukuyishintsha, nakuba izodinga ukuhlanza izindawo zokukhwelana ukuze uthole uphawu oluhle nge-gasket entsha.

2. I-Turbocharger wastegate iyakhala

I-rattle ephuma ku-turbocharger wastegate ingenye yezinkinga ezivame kakhulu nge-BMW N55 injini, enikwa amandla yi-turbo eyodwa yokuskrola kokubili kokusebenza nokusebenza kahle.

I-wastegate, ethumela kuphelelwa amandla i-turbocharger, ingagcina iguge, kubangele ukukhala kwensimbi. Ngokuvamile kubonakala kakhulu ngenkathi ungenzi lutho noma kuma-RPM aphansi, lapho i-turbo ingasebenzi kanzima.

I-Wastegate rattle ngokuvamile ibangelwa i-activator ye-wastegate evulekile noma ukuxhumana. I-actuator ibeka i-flap ye-wastegate, futhi njengoba ukubekezelelana kuncipha ngokukhula noma ukusetshenziswa, i-flap izoqala ukudlidliza. Ezimweni ezimbi kakhulu, ukugqoka okunjalo kungabangela ukuvuza kumfucumfucu kanye nokulahlekelwa kwengcindezi yokuthuthukisa. Lokhu kubangela ukusebenza kabi kwenjini, ukusheshisa okuvilaphayo, nokonga kukaphethiloli okubi kakhulu.

Uma ingalungiswanga, i-wastegate eyonakele ingagcizelela nakakhulu i-turbocharger nezinye izingxenye zenjini, okuholela ekulungisweni okuphezulu. Kubathengisi nabachwepheshe bokukhanda, ukutholwa kusenesikhathi kubalulekile. Kwesinye isikhathi, inkinga ingaxazululwa okwesikhashana ngokulungisa i-actuator, kodwa kaningi, uhlelo lwe-turbocharger noma umchithi kumele ithathelwe indawo.

3. Ukuhluleka kwephampu yamanzi kagesi 

I-N55 ihlanganisa i- ipompo lamanzi kagesi ngokusebenza kahle okupholile nokunemba. Kodwa le ngxenye ingaguga ngemva kwamakhilomitha angu-60,000 kuya kwangu-80,000 futhi ingashiya abashayeli bevaleleke eceleni komgwaqo uma benganakwa.

Ukushisa okweqile kwenjini, izibani zedeshibhodi ezixwayisayo, isipholisa-manzi, kanye nokusebenza kabi kwesistimu yokupholisa konke kuyizimpawu zephampu yamanzi evuzayo. Abashayeli bangase bezwe ngisho nemisindo eyinqaba ephuma endaweni yenjini noma ukunqanyulwa kukagesi okungazelelwe okubangelwa ukuphathwa kwe-thermal.

Njengoba iphampu yamanzi iyingxenye ebalulekile ekugcineni injini isebenza, ukuxilongwa kanye nokushintshwa kwalolu daba kubalulekile.

4. Izinkinga zephampu yamafutha anengcindezi ephezulu (HPFP). 

Izinkinga nge-BMW N55 injini high-pressure fuel futha (HPFP), ehlinzeka ngophethiloli ngengcindezi ephezulu edingwa wuhlelo lomjovo wenjini, nawo abhalwe kahle.

Uma i-HPFP intengantenga, ingaphazamisa ukunemba kokugeleza kukaphethiloli, kuphazamise ukusebenza. Izimpawu ezijwayelekile ze-HPFP ephukile zihlanganisa ukuqala kwenkinga, ukunkenketha isikhathi eside, ukungenzi lutho okunomsindo, ukuma, ukwenziwa kusebenze kwemodi exegayo, nokuphelelwa ngamandla okubonakalayo ngesikhathi sokusheshisa.

Nakuba i-BMW yenze izinguquko eziphawulekayo zokubhekana nalokhu kukhathazeka ngokuthuthukiswa kobuchwepheshe bephampu nokukhiqiza, isengahluleka, ikakhulukazi kumamodeli amadala. Ukungcoliswa kwesibaseli, ukuguga kwengxenye yangaphakathi, noma iphutha uhlelo lukaphethiloli electronics konke kungaholela HPFP ukwehluleka.

Ukulungisa i-HPFP eyonakele akuyona into elula, eshibhile, ngakho-ke izinyathelo zokuxilonga nezokuvimbela zibalulekile. Omakhenikha bangasebenzisa ukuxilonga okunamandla ukuze kutholwe amaphutha e-HPFP kusenesikhathi, njengamakhodi amaphutha (isb, i-P142E noma i-P0087) noma ukufundwa komfutho kaphethiloli okungalungile.

5. Ukuqhekeka kwepayipi lokushaja

I-BMW N55 plastic ipayipi lokushaja igijima isuka ku-intercooler iye ku-multifolded, kodwa ingaqhekeka lapho ibhekene nezinga lokushisa eliphezulu nokucindezela eduze kwe-turbocharger. Lokho ekugcineni kuzoholela ekujikeni kwengxenye futhi ekugcineni iqhekeke, okuholela ekuvuzeni okunamandla, okusho ukuncipha kwamandla, ukuphendula okungekuhle kwe-throttle, kanye nomlilo ongafanele.

Kungumqondo omuhle ukufaka esikhundleni sepayipi lepulasitiki eline-aluminium eqinile noma ingxenye ye-silicone. Ziyakwazi ukumelana nokushisa futhi zihlala isikhathi eside, azijwayele ukuqhekeka, futhi zandisa ukujikeleza komoya. Ngaphezu kwalokho, amapayipi wokushaja ukusebenza kufanele isebenze, okwandisa ukugeleza komoya, ukugcina injini isebenza kahle futhi inikeze abanikazi ukusebenza okuthembekile.

Isiphetho

Injini ye-BMW N55 inenhlanganisela enamandla yokusebenza kahle nokusebenza kahle kodwa ayinayo ingxenye yayo yezinkinga. Ukuvuza kukawoyela, ukwehluleka kwephampu yamanzi kagesi, ukwehluleka kwe-HPFP, ukuqhekeka kwamapayipi eshaja, kanye ne-turbocharger wastegate rattle yizinkinga ezimbalwa nje ezithinta ukwethembeka futhi ezidinga ukunakekelwa okukhethekile.

Ukubhekana nalezi zinkinga, amabhizinisi kufanele aqinisekise ukuthi agcina izingxenye zezimoto ezifanele ukuze amakhasimende akwazi ukuthola izingxenye ezidingekayo ukuze injini yawo ye-BMW ibuye isebenze.