N57 engine - nā mea a pau e pono ai ʻoe e ʻike

No ka ʻohana ʻenekini diesel ka N57 me ka turbocharger a me ka ʻōnaehana kaʻa maʻamau. Hoʻomaka ka hana ʻana ma 2008 a pau i ka makahiki 2015. Hōʻike mākou i ka ʻike nui loa e pili ana iā ia.

N57 engine - ʻikepili ʻenehana

Hoʻohana ka ʻenekini diesel i kahi ʻōnaehana hoʻokele valve DOHC. ʻO ka ʻāpana mana ʻeono-cylinder he 6 cylinders me 4 pistons i kēlā me kēia. He 90 mm ka pahu o ka ʻenekini, ka piston stroke 84 mm ma ka 16.5 kaomi. ʻO ka neʻe ʻana o ka mīkini pololei he 2993 cc. 

Ua pau ka mīkini i ka 6,4 lita o ka wahie no 100 km ma ke kūlanakauhale, 5,4 lita no 100 km i ka hui hui a me 4,9 lita no 100 km ma ke alaloa. Pono ka ʻāpana i ka ʻaila 5W-30 a i ʻole 5W-40 e hana pono. 

Nā mana kaʻa mai BMW

Mai ka hoʻomaka ʻana o ka hana ʻana o nā ʻenekini BMW, ua hana ʻia nā ʻano mana ʻeono. Ua loaʻa iā lākou a pau ka lua a me ka hahau ʻana o 84 x 90 mm, kahi neʻe ʻana o 2993 cc a me kahi pākuʻi o 3:16,5. No ka ʻohana N1 nā ʻano like ʻole:

• N57D30UL me 150 kW (204 hp) ma 3750 rpm. a me 430 Nm ma 1750-2500 rpm. ʻO ka lua o ka mana he 155 kW (211 hp) ma 4000 rpm. a me 450 Nm ma 1750-2500 rpm;
• N57D30OL 180 kW (245 hp) ma 4000 rpm. a me 520 Nm ma 1750-3000 rpm. a i ʻole 540 Nm ma 1750-3000 rpm;
• N57D30OL 190 kW (258 hp) ma 4000 rpm. a me 560 Nm ma 2000-2750 rpm;
• N57D30TOP220 kW (299 hp) ma 4400 rpm. a i ʻole 225 kW (306 hp) ma 4400 rpm. a me 600 Nm ma 1500-2500 rpm;
• N57D30TOP(TÜ) 230 kW (313 hp) ma 4400 rpm. a me 630 Nm ma 1500-2500 rpm;
• N57D30S1 280 kW (381 hp) ma 4400 rpm. 740 Nm ma 2000-3000 rpm.

Mana haʻuki N57D30S1

Aia kekahi ʻano haʻuki ʻekolu-supercharger, kahi i loaʻa i ka mea mua he geometry turbine hoʻololi a hana maikaʻi loa i ka wikiwiki o ka ʻenekini haʻahaʻa, ʻo ka lua ma ka wikiwiki waena, hoʻonui i ka torque, a ʻo ke kolu i hana i nā piko pōkole o ka mana a me ka torque ma ke kiʻekiʻe loa. ukana - ma ka pae o 740 Nm a me 280 kW (381 hp).

Hoʻolālā kalaiwa

ʻO ka N57 he 30° supercharged, wai-cooled inline engine. Hoʻohana ʻo ia i ʻelua camshafts overhead - he ʻenekini diesel. Hana ʻia ka pahu mīkini me ka alumini māmā a paʻa. Hana ʻia nā ʻūhā nui o ka crankshaft me ka cermet alloy.

He mea kūpono hoʻi e wehewehe i ka hoʻolālā ʻana o ke poʻo cylinder engine. Hoʻokaʻawale ʻia ia i ʻelua mau ʻāpana, kahi i loaʻa ai ka exhaust a me ka intake channel, a me nā valves ma lalo. Aia ma luna ka papa kumu e holo ai nā camshafts. Hoʻolako pū ʻia ke poʻo me kahi kaila recirculation hoʻopau. ʻO kahi hiʻohiʻona o ka N57 ʻo ia ka loaʻa ʻana o nā cylinders i nā laina maloʻo i hoʻopaʻa ʻia me ka thermally block.

Camshafts, wahie a me turbocharger

ʻO kahi mea koʻikoʻi o ka hana ʻana o ka mīkini ʻo ia ka exhaust camshaft, i alakaʻi ʻia e kahi mea hoʻokahi o nā valve intake. ʻO nā ʻāpana i helu ʻia ke kuleana no ka hoʻomalu ʻana i ka intake a me ka exhaust valves o nā cylinders. I ka huli ʻana, no ka hana pono ʻana o ka camshaft intake, ʻo ke kaulahao kaʻa ma ka ʻaoʻao flywheel, i hoʻopaʻa ʻia e nā mea huki kaulahao hydraulic, ke kuleana.

Ma ka ʻenekini N57, hoʻokomo ʻia ka wahie ma ke kaomi ʻana o 1800 a 2000 bar i loko o nā cylinders ma o ka ʻōnaehana Bosch Common Rail. Hiki i nā ʻano like ʻole o ka ʻāpana mana ke loaʻa nā turbocharger kinoea hoʻopau - ʻano geometry a i hui pū ʻia me kahi intercooler, hoʻokahi a ʻelua paha.

ʻO ka hana o ka mea hoʻokele - nā pilikia i loaʻa

I ka wā o ka hana ʻana o ke kaʻa kaʻa, hiki ke hana ʻia nā hana ʻino e pili ana me nā mea hoʻoheheʻe vortex. Ma muli o ka hana ʻino, hoʻomaka ka ʻenekini e holo pono ʻole, a me nā hewa ʻōnaehana hōʻailona. 

ʻO kekahi pilikia ʻo ka hoʻokumu ʻana o ka walaʻau nui. ʻO nā leo makemake ʻole ka hopena o kahi silencer crankshaft i haki. Hōʻike ka pilikia ma kahi holo o 100 XNUMX. km a pono e hoʻololi i ke kaulahao manawa.

Pono ʻoe e hoʻolohe i ka hoʻohana ʻana i ke ʻano ʻaila kūpono. Mahalo i kēia, ʻo ke koena o ka ʻōnaehana, e like me ka turbine, pono e holo ma kahi o 200 mau hola me ka pilikia ʻole. kilomika.

N57 engine kūpono no ke kani

ʻO kekahi o nā ala maʻamau e hoʻonui ai i ka mana engine ʻo ka hoʻonui ʻana i ka turbocharger. Ma ka hoʻohui ʻana i kahi mana nui a i ʻole ka hybrid version i ka mīkini, hiki ke hoʻomaikaʻi maikaʻi ʻia nā ʻāpana hāʻawi ea. Eia naʻe, e pili ana kēia me nā pae kiʻekiʻe o ka puhi ʻana i ka wahie. 

Hoʻoholo pū nā mea hoʻohana N57 e hoʻolohe i ka ECU. ʻO ka hoʻololi hou ʻana i nā ʻāpana he mea maʻalahi a hoʻomaikaʻi i ka hana. ʻO kahi hopena ʻē aʻe mai kēia ʻāpana ʻo ka hoʻololi ʻana o ka ECU wale nō, akā ʻo nā pahu hoʻokani pū kekahi. Hiki ke hoʻopili ʻia ke kani ʻana i ka huila lele. ʻO kahi mea me ka liʻiliʻi liʻiliʻi e hoʻomaikaʻi i ka hana o ka mana ma o ka hoʻonui ʻana i ka wikiwiki o ka mīkini.

ʻO nā ala ʻē aʻe e hoʻonui ai i ka ʻenekini, ʻo ia ka hoʻomaikaʻi ʻana i ka pauma wahie, me ka hoʻohana ʻana i nā injectors kahe kiʻekiʻe, ka hoʻokomo ʻana i ke poʻo cylinder i poni ʻia, ka pahu komo a i ʻole ka mea hoʻololi catalytic haʻuki, exhaust and road cam.