M54B25 2.5L enjene ho tloha BMW - boitsebiso ba bohlokoa ka ho fetisisa sebakeng se le seng
Tse ka hare
Likoloi tse nang le enjene ea M54B25 li ntse li le teng litseleng tsa Poland. Ena ke enjene e atlehileng, e lekantsoeng e le yuniti ea moruo e fanang ka ts'ebetso e nepahetseng. Re fana ka tlhaiso-leseling ea bohlokoa ka ho fetisisa mabapi le litšobotsi tsa tekheniki, tharollo ea moralo le litefiso tsa ho hloleha ha lihlahisoa tsa BMW.
Enjene ea M54B25 - data ea tekheniki
Model M54B25 ke 2.5-litha e le nngwe peterole yuniti - hantle 2494 cm3. E entsoe ka har'a mola oa botšelela. Enjene ea tlhaho e lakatsehang ea methapo e mene ke setho sa lelapa la M54. E hlahisitsoe ho tloha 2000 ho isa 2006 femeng ea Bavaria BMW e Munich.
Sebaka se na le bophara ba 84,0 mm le stroke ea 75,00 mm. Karo-karolelano ea lebitso la compression ke 10,5: 1, matla a phahameng a yuniti ke 189 hp. ka 6000 rpm, torque e phahameng - 246 Nm.
Hape ke habohlokoa ho bolela hore na ha e le hantle matšoao a lihlopha ka bomong a bolela eng. M54 e bua ka lelapa la enjene, letšoao la B ho mofuta oa peterole ea enjene, le 25 ho matla a eona a nepahetseng.
Ke mechini efe e kentsoeng M54B25?
Sesebelisoa se ne se sebelisoa ho tloha 2000 ho isa 2006. Enjene ea BMW e kentsoe likoloing tse kang:
- BMW Z3 2.5i E36/7 (2000–2002);
- BMW 325i, 325xi, 325Ci (E46) (2000-2006 gg.);
- BMW 325ti (E46/5) (2000-2004 gg.);
- BMW 525i (E39) (2000–2004);
- BMW 525i, 525xi (E60/E61) (2003-2005 gg.);
- BMW X3 2.5i (E83) (2003–2006);
- BMW Z4 2.5i (E85) (2002-2005).
Moralo oa koloi
Enjene ea M54B25 e ne e thehiloe holim'a sethala sa aluminium alloy cast cylinder block le li-cylinder liner tsa tšepe. Hlooho ea cylinder, eo hape e entsoeng ka aluminium, e na le li-camshaft tse peli tsa DOHC tse tsamaisoang ke ketane hammoho le li-valve tse 'nè ka silindara, bakeng sa kakaretso ea li-valve tse 24.
Baqapi ba yuniti ea matla le bona ba nkile qeto ea ho e hlomella ka sistimi ea taolo ea Siemens MS 43 le Vanos dual variable valve timing bakeng sa ho kenya le ho ntša li-camshafts. Lebitso le felletseng la sistimi ena ke BMW variable valve time system. Sena sohle se tlatselletsoa ke mochini o se nang mochini oa elektroniki le mokhoa o mongata oa DISA oa bolelele bo habeli.
Tabeng ea enjene ea M54 B25, ho ile ha boela ha sebelisoa mokhoa oa ho khantša o se nang kabo e nang le li-coil tse tukang. E 'ngoe le e' ngoe ea tsona e etselitsoe ka thoko bakeng sa silinda e 'ngoe le thermostat, eo ts'ebetso ea eona e laoloang ke elektronike.
Mehaho ea li-block
Karolo ena e na le li-cylinders, tseo e 'ngoe le e' ngoe ea tsona e pepeselitsoeng ho pholiso e potolohang. Crankshaft ea tšepe e leka-lekaneng e potoloha ka har'a li-bearings tse ka nkeloang sebaka ka matlo a arohaneng. Hape ho ke ho hlokomeloe hore M54B25 e na le li-bearings tse supileng tse kholo.
Ntho e 'ngoe e totobatsang ke hore lithupa tse hokahantsoeng tsa tšepe li sebelisa li-bearings tse ka nkeloang sebaka lehlakoreng la crankshaft, hammoho le lihlahla tse tiileng moo piston e leng teng. Li-piston ka botsona li entsoe ka mehele e meraro e nang le mehele e 'meli e ka holimo ea ho hatella le lesale le le leng le tlaase le hlakolang oli. Ka lehlakoreng le leng, lithakhisa tsa piston li tšoara boemo ba tsona ka ho sebelisa li-circlips.
sekoaelo sa silinda
Bakeng sa hlooho ea cylinder ea M54B25, thepa ea tlhahiso ke ea bohlokoa. Aluminium alloy e fana ka mekhoa e metle ea ho pholisa. Ho phaella moo, e bōpiloe motheong oa moralo oa linaha tse fapaneng o fanang ka matla a mangata le moruo. Ke leboha ho eena hore moea o kenang o kena ka kamoreng ho tloha ka lehlakoreng le leng ebe o tsoa ho o mong.
Mehato e khethehileng ea moralo le eona e lebisitse ho fokotseng lerata la enjene. Sena se sebetsa ho li-valve clearance, tse laoloang ke li-hydraulic lifters tse iketsetsang tsona. E boetse e felisa tlhoko ea li-valve tsa kamehla.
Ts'ebetso ea ho khanna - seo u lokelang ho se batla?
Tabeng ea enjene ea BMW M54B25, mathata a tloaelehileng haholo ke pompo ea metsi e fosahetseng le thermostat e fosahetseng. Basebelisi ba boetse ba supa valve ea DISA e senyehileng le litiiso tse robehileng tsa VANOS. Sekoahelo sa valve le sekoahelo sa pompo ea oli le tsona hangata li hlōleha.
Na enjene ea M54B25 e loketse ho khothaletsoa?
Nakong ea katleho ea eona, M54B25 e fumane maikutlo a matle haholo. O ne a lula a le maemong a pele lethathamong la lienjineri tse ntlehali lefatšeng la makasine ea Ward. Ka tlhokomelo e tloaelehileng le karabelo e nakong ho likarolo tse atisang ho hlōleha, mochine oa M54B25 o tla sebetsa ntle ho phoso bakeng sa lik'hilomithara tse likete.
