Injini ye-M52B25 evela ku-BMW - izici zobuchwepheshe nokusebenza kweyunithi
Okuqukethwe
Injini ye-M52B25 yakhiqizwa kusukela ngo-1994 kuya ku-2000. Ngo-1998, kwenziwa izinguquko eziningana zokuklama, ngenxa yalokho ukusebenza kweyunithi kwathuthukiswa. Ngemva kokuqedwa kokusatshalaliswa kwemodeli ye-M52B25, yathathelwa indawo yinguqulo ye-M54. Iyunithi yajabulela ukuqashelwa, futhi ubufakazi balokhu kwaba indawo ehlala njalo ohlwini lwezinjini ezingu-10 ezihamba phambili zephephabhuku elihlonishwayo leWard's - kusukela ngo-1997 kuya ku-2000. Sethula ulwazi olubaluleke kakhulu mayelana ne-M52B25!
Injini ye-M52B25 - idatha yobuchwepheshe
Ukukhiqizwa kwale modeli yenjini kwenziwa ngumkhiqizi waseBavaria iMunich Plant eMunich. Ikhodi yenjini engu-M52B25 yaklanywa ngendlela enemivimbo emine enamasilinda ayisithupha abekwe emugqeni oqondile eduze kwe-crankcase lapho wonke amapiston eshayelwa khona i-crankshaft evamile.
Ukufuduka okuqondile kwenjini kaphethiloli ngu-2 cm³. Isistimu yomjovo kaphethiloli nayo yakhethwa, i-oda lokudubula le-cylinder ngayinye laliyi-494-1-5-3-6-2 kanye nesilinganiso sokucindezela esingu-4:10,5. Isisindo esiphelele senjini ye-M1B52 singamakhilogremu angu-25. Injini ye-M52B25 iphinde ifakwe nohlelo olulodwa lwe-VANOS - Variable Camshaft Timing.
Yiziphi izinhlobo zezimoto ezisebenzisa injini?
Injini engu-2.5 litre ifakwe ezinhlotsheni zeBMW 323i (E36), BMW 323ti (E36/5) kanye neBMW 523i (E39/0). Lolu phiko lwalusetshenziswa ukukhathazeka kusukela ngo-1995 kuya ku-2000.
Indlela yokwakha yeyunithi yokushayela
Idizayini yemoto isuselwe ku-cylinder block cast ephuma ku-aluminium alloy, kanye nama-cylinder liners ahlanganiswe ne-Nikasil. I-Nikasil coating iyinhlanganisela ye-silicon carbide ku-matrix ye-nickel, futhi izakhi ezisetshenziswa kuzo zihlala isikhathi eside. Njengeqiniso elithakazelisayo, lobu buchwepheshe bubuye busetshenziswe ekwakhiweni kwezinjini zezimoto ze-F1.
Amasilinda kanye nomklamo wawo.
Ikhanda le-cylinder lenziwe nge-aluminium alloy. Ama-camshaft amawele ashayelwa ngamaketango nama-valve amane isilinda ngalinye nawo angeziwe. Ngokuphawulekayo, ikhanda lisebenzisa idizayini yokugeleza okuwela amandla engeziwe nokusebenza kahle.
Umgomo wokusebenza kwawo ukuthi umoya wokungenisa umoya ungena ekamelweni elivuthayo ukusuka ohlangothini olulodwa, futhi amagesi okukhipha aphuma kwelinye. I-valve clearance ilungiswa ngokuzilungisa ngokuthinta ompompi we-hydraulic. Ngenxa yalokhu, umsindo ngesikhathi sokusebenza kwenjini ye-M52B25 ayinayo imvamisa ephezulu. Iphinde iqede isidingo sokulungiswa kwama-valve avamile.
Ukuhlelwa kwesilinda kanye nohlobo lwepiston
Idizayini yeyunithi iklanywe ngendlela yokuthi amasilinda avezwe kusipholisi esijikelezayo esivela kuzo zonke izinhlangothi. Ngaphezu kwalokho, injini ye-M52B25 inama-bearings amakhulu ayisikhombisa kanye ne-balanced cast iron crankshaft ezungeza kuma-bearings amakhulu ahlukanisekayo.
Ezinye izici zokuklama zihlanganisa ukusetshenziswa kwezinti zokuxhuma zensimbi ezifojiwe ezinama-bearings ashintshwayo ahlukaniswa ohlangothini lwe-crankshaft kanye nezihlahla ezinzima eduze kwephinikhodi. Ama-piston afakiwe anendandatho emithathu enezindandatho ezimbili ezingenhla ezihlanza amafutha, futhi izikhonkwane ze-piston zihlanganiswe nama-circlips.
Ukusebenza kweDrayivu
BMW M52 B25 izinjini ujabulele ukubuyekezwa okuhle kwabasebenzisi. Bazilinganise njengezithembekile futhi zonga. Kodwa-ke, ngesikhathi sokusetshenziswa, ezinye izinkinga zaphakama, ngokuvamile ezihlotshaniswa nokusebenza okuvamile.
Lokhu kufaka phakathi ukwehluleka kwezingxenye zohlelo olusizayo lweyunithi yamandla. Lena isistimu yokupholisa - kuhlanganise nephampu yamanzi, kanye ne-radiator noma ithangi lokunweba.
Ngakolunye uhlangothi, izingxenye zangaphakathi zazilinganiselwe njengeziqine ngendlela engavamile. Lezi zihlanganisa ama-valve, amaketanga, iziqu, izinduku zokuxhuma kanye nezimpawu. Basebenza ngokuqhubekayo iminyaka engaphezu kuka-200. km. imayela.
Uma kucatshangelwa zonke izici ezihlobene nokusetshenziswa injini M52B25, singasho ukuthi kwaba yimpumelelo kakhulu amandla iyunithi. Izibonelo ezigcinwe kahle zisatholakala emakethe yesibili. Nokho, ngaphambi kokuthenga noma iyiphi yazo, kubalulekile ukuhlola ngokucophelela isimo sayo sobuchwepheshe.
