Nā mīkini BMW M52TUB20, M52TUB25, M52TUB28

Nā mea

M52TUB20
M52TUB25
M52TUB28

ʻO ka moʻo M52 nā ʻenekini ʻaila BMW me kahi hoʻonohonoho laina o 6 cylinders a me ʻelua camshafts (DOHC).

Ua hana ʻia lākou mai 1994 a 2000, akā i ka makahiki 1998 aia kahi "technical update" (technical update), kahi i hoʻokomo ʻia ai ka ʻōnaehana VANOS ʻelua i nā hiʻohiʻona i loaʻa, kahi e hoʻoponopono ai i ka manawa o nā pahu hoʻopau (dual gas distribution system). Ma nā papa inoa o nā mīkini 10 Ward maikaʻi loa no 1997, 1998,1999, 2000 a me 52, ʻike mau ʻia ka MXNUMX a ʻaʻole i haʻalele i ko lākou mau kūlana.

Ua loaʻa i nā ʻenekini o ka M52 kahi pahu pahu alumini, ʻaʻole like me ka M50, i hana ʻia me ka hao. Ma ʻAmelika ʻĀkau, ua kūʻai mau ʻia nā kaʻa me kēia mau ʻenekini ma kahi poloka hao. ʻO ka palena o ka wikiwiki kiʻekiʻe he 6000 rpm, a ʻo ka nui loa he 2.8 lita.

Ma ke kamaʻilio ʻana i ka hoʻonui ʻenehana 1998, ʻehā mau hoʻomaikaʻi nui:

ʻO Vanos valve timing system, e kūkākūkā hou ʻia ma hope;
Ka hoʻomalu throttle uila;
ʻO ka lua-nui Variable Geometry Intake Valve (DISA);
Hoʻolālā hou ʻia nā liner cylinder.

M52TUB20

ʻO kēia ka M52B20 i hoʻololi ʻia, ʻo ia, ma muli o nā hoʻomaikaʻi i loaʻa, e like me nā mea ʻelua ʻē aʻe, ʻoi aku ka nui o ka traction ma nā revs haʻahaʻa (ʻo 700 rpm ka kiʻekiʻe kiʻekiʻe). ʻO 80mm ka pahu pahu pahu, ʻo ka piston stroke he 66mm, a ʻo ka compression ʻo 11:1. Volume 1991 cu. knm, mana 150 hp ma 5900 rpm - ʻike ʻia ka hoʻomau o nā hanauna i kēia mau hiʻohiʻona. Eia naʻe, ʻo ka torque he 190 N * m, e like me ka M52V20, akā ma 3500 rpm.

Hoʻohana ʻia ma nā kaʻa:

BMW E36 / 7 Z3 2.0i
1998-2001 BMW 320i/320Ci (E46 kino)
1998-2001 BMW 520i (E39 kino)

M52TUB25

ʻO ka piston stroke he 75 mm, ʻo ke anawaena cylinder he 84 mm. ʻO ke kumu hoʻohālike B25 2.5-lita ma mua o kona mua i ka mana - 168 hp. ma 5500 rpm. ʻO ka mana i hoʻololi ʻia, me nā ʻano mana like, e hana i ka 245 N * m ma 3500 rpm, aʻo ka B25 i hōʻea iā lākou ma 4500 rpm.

Hoʻohana ʻia ma nā kaʻa:

1998-2000 E46323i, 323ci, 325i
1998-2000 E39523 XNUMXi
1998-2000 E36/7Z3 2.3i

M52TUB28

ʻO ka neʻe ʻana o ka mīkini he 2.8 lita, ʻo ka piston stroke he 84 mm, ʻo ke anawaena cylinder he 84 mm, ʻoi aku ka nui o ka crankshaft i hoʻohālikelike ʻia me ka B25. ʻO ka lākiō kaomi 10.2, mana 198 hp ma 5500 rpm, torque - 280 N * m / 3500 rpm.

ʻO nā pilikia a me nā pōʻino o kēia kükohu ICE e like me ka M52B25. Ma ka piko o ka papa inoa, he overheating ʻo ia, e alakaʻi pinepine ai i nā hemahema o ka mīkini hoʻoili kinoea. ʻO ka hoʻonā ʻana i ka overheating ʻo ka hoʻomaʻemaʻe pinepine ʻana i ka radiator, ka nānā ʻana i ka pamu, thermostat, ka pāpale radiator. ʻO ka lua o ka pilikia ʻo ka hoʻohana ʻana i ka aila ma mua o ka mea maʻamau. Ma BMW, he pilikia maʻamau kēia, e pili ana i nā apo piston non-wear-resistant. I ka loaʻa ʻole o ka hoʻomohala ʻana ma nā paia o nā cylinders, hiki ke hoʻololi wale ʻia nā apo a ʻaʻole e waiho ka ʻaila ma mua o ka mea i kauoha ʻia. ʻO nā mea hoʻokiʻekiʻe hydraulic ma kēia mau mīkini "like" i ka coke, kahi e alakaʻi ai i ka misfiring.

M52tuB28

E nānā i kēia wikiō ma YouTube

Hoʻohana ʻia ma nā kaʻa:

1995-1999 E36328 328i, XNUMXis
1995-1998 E39528 XNUMXi
1995-1998 E38728 728i, XNUMXiL
1997-1998 E36/7Z3 2.8

ʻO ka ʻōnaehana VANOS he mea koʻikoʻi loa ia i ka hana ʻana o ka ʻenekini a i ka wā o nā kipi paʻa ʻole, ka hana like ʻole i ka laulā a i ʻole ka hāʻule ʻana o ka mana, pau loa ia. No ka hoʻoponopono ʻana, pono ʻoe e loaʻa i kahi pahu hoʻoponopono ʻōnaehana.

ʻAʻole hoʻomaka ka ʻenekini e hoʻomaka, ʻoiai ma waho ua maikaʻi nā mea a pau. Hiki ke lele ka thermostat, a ma ke ʻano maʻamau, ʻoi aku ka haʻahaʻa ma mua o ka M50.

ʻO nā mea maikaʻi, hiki ke hoʻomaopopo ʻia ʻaʻole pili kēia mau mīkini ʻekolu i ka maikaʻi o ka ʻaila. ʻAʻole ʻōlelo pinepine ʻia ka hoʻopaʻa ʻana iā lākou, a me ke kūʻai ʻana no kahi swap, no ka mea ua ʻelemakule lākou. Eia nō naʻe, no ka poʻe e hoʻomau nei i ko lākou makemake, aia kahi ala i hōʻoia ʻia - e hoʻokomo i ka intake manifold M50B25, nā camshafts mai S52B32 a me ka tuning chip. E hoʻokiʻekiʻe ka mana i ka 250 hp kiʻekiʻe. ʻO kahi koho ʻē aʻe e hōʻoluʻolu a hiki i 3 lita, i hele pū me ke kūʻai ʻana i kahi crankshaft M54B30 a ʻoki i ka piston e 1.6 mm.

ʻO ke kau ʻana i ka turbine ma kekahi o nā ʻenekini i wehewehe ʻia he ala kūpono loa ia e hoʻonui ai i ka mana. No ka laʻana, ʻo kahi M52B28 me kahi turbine Garrett a me kahi hoʻonohonoho kaʻina hana maikaʻi e hana i kahi kokoke i 400 hp. me kahi hui piston stock.

ʻOkoʻa nā ʻano hana hoʻokani no ka M52V25. Pono e kū'ai, ma waho a'e o ka intake manifold mai ka "kaikuaana" M50V25, he crankshaft pū me nā lā'au ho'ohui M52V28, a me ka firmware. ʻOi aku ka maikaʻi o ka hoʻokomo ʻana i nā camshafts a me kahi ʻōnaehana exhaust a laila ʻo S62 - me ka ʻole o lākou, ʻaʻole ia e haʻalulu i ke kani ʻana. No laila, me ka nui o 2 lita, e loaʻa iā ʻoe ma mua o 200 hp.

No ka hoʻokiʻekiʻe ʻana i ka mana ma ka mīkini liʻiliʻi 2-lita, pono ʻoe i kahi lua a hiki i ka 2.6 lita kiʻekiʻe a i ʻole ka turbine. ʻO ka luhi a me ke kani ʻana, hiki iā ia ke hāʻawi i 200 hp. ʻO ka Turbocharged me ke kōkua o kahi pahu turbo kūikawā e hiki ke hoʻokuʻu i ka 250 hp. ma 2 lita o ka nui hana. Hiki ke hoʻololi ʻia ka pahu Garrett e ka Lysholm, e hāʻawi pū i ka hoʻonui mana i loko o nā palena like.