Hoʻokaʻawale ʻia ka pahu cylinder o ka mīkini ʻaila i ka hao a me ka alumini. E hoʻohālikelike i nā pono a me nā pōʻino o ka pahu alumini a me ka pahu hao hao: 1) Kaumaha

ʻOi aku ka liʻiliʻi o ka gravity o ka alumini ma mua o ka hao, a ʻoi aku ka māmā o ka pahu pahu alumini ma lalo o ke kumu o ka hoʻokō ʻana i nā koi ikaika. He māmā ka mīkini, he hopena maikaʻi ia i ka puʻunaue kaumaha o ke kaʻa, a ʻoi aku ka māmā o ke kaʻa. No laila, i kēia manawa, ʻoi aku ka nui o nā cylinders aluminika.

2) Volume

No ke kumu hoʻokahi, liʻiliʻi ka umekaumaha kikoʻī o ka alumini, a ʻoi aku ka ikaika o ke kūkulu ʻana o ka alumini no kēlā me kēia ʻāpana leo ma mua o ka hao hao, no laila ʻoi aku ka nui o nā pahu alumini i ka nui. He 88mm ka mamao o ka pahu pahu o EA113 / EA888, aʻo ka mana o kēia manawa he cylinder anawaena a hiki i 82.5mm. Koe wale no ka wai hooluolu, he lahilahi maoli ka paia cylinder. Ma kēiaʻano, ua paʻakikī loa ka'enekini holoʻokoʻa a liʻiliʻi i ka nui. ʻOi aku ka paʻakikī o nā cylinders alumini e hoʻokō i kēia hopena. I kēia manawa, ʻoi aku ka mana o ka pahu pahu hao. [Hoʻohui: ʻO ka ikaika tensile o ka ductile cast iron hiki ke ʻoi aku ma mua o 1000MPa, ʻoiai ka ikaika tensile o ka mokulele 7075 alumini alumini he 524MPa, ʻo ka nui o ka hao he 7.85, a ʻo ka nui o ka alumini he 2.7. No laila, i mea e loaʻa ai ka ikaika like, pono e hoʻonui ʻia ka nui o ka alumini alumini ma kahi o hoʻokahi. ʻO nā manawa, akā ʻoi aku ka māmā o ke kaumaha ma kahi o 40%]

3) Ke kū'ē a me ka ikaika o ka corrosion

He mea maʻalahi ka alumini me ka wai i hana ʻia i ka wā e puhi ʻia ai, a ʻaʻole maikaʻi kona kūpaʻa ʻana i ka corrosion e like me ka maikaʻi o nā poloka cylinder hao, ʻoi aku hoʻi no nā ʻenekini supercharged me ke kiʻekiʻe o ka wela a me ke kaomi. A ʻo ka hopena mua e pili ana i ka leo, ma ka ʻaoʻao ʻē aʻe, i ka liʻiliʻi ʻana o nā koi o kāu ʻenekini, he mea maʻamau ka paʻakikī e hoʻokō i ka ikaika o ka pahu pahu hao me ka pahu pahu alumini. No laila, hoʻohana nā ʻenekini kiʻekiʻe kiʻekiʻe i nā poloka hao, e like me (ma mua o ka 9th hanauna) EVO's 286hp 2.0L I4 (4G63), i hoʻolei ʻia i nā poloka hao mau. ʻIke ʻia kona palena hoʻololi kiʻekiʻe. Inā hoʻohana ʻia kahi pahu alumini, ʻaʻole maʻalahi ia. I kēia manawa, ʻoi aku ka mana o ka pahu pahu hao.

4) Kālā

ʻO ke kumukūʻai maʻamau ʻoi aku ka nui o ka cylinder aluminika, ʻaʻohe mea e wehewehe. I kēia manawa, ʻoi aku ka mana o ka pahu pahu hao.

5) Pahū pahū a me ka wela dissipation

ʻOi aku ka wikiwiki o ka wela o ka alumini, no laila he hana hoʻomaha maikaʻi, hiki ke kōkua i ka ʻenekini e hōʻemi i ka hiki ke hoʻopau ʻia. Ma ka lakene ho'opi'i like, hiki i nā'enekini pahu alumini ke ho'ohana i ka'enela ha'aha'a ha'aha'a ma mua o nā'enekini pahu hao. I kēia manawa, ʻoi aku ka mana o ka poloka cylinder alumini.

6) ʻO ke koena o ka friction

I mea e hōʻemi ai i ka inertia o nā ʻāpana pānaʻi a hoʻonui i ka wikiwiki o ka rotation a me ka wikiwiki pane, ʻo ka hapa nui o nā pistons e hoʻohana i ka alumini alumini e like me ka mea. Inā hana ʻia ka paia cylinder me ka alumini, ʻoi aku ka nui o ka coefficient o ka friction ma waena o ka alumini a me ka alumini, e hoʻopilikia nui i ka hana o ka mīkini. ʻAʻohe pilikia o ka hao hao. I kēia manawa, ʻoi aku ka poʻe o nā poloka pahu hao. [Hoʻohui: hoʻohana pū kekahi mau mea i kapa ʻia ʻo "all-aluminum" i nā liner cylinder liners] i ka hopena:

ʻO nā mea maikaʻi o ka alumini: ke kaumaha māmā, ka wela wela maikaʻi;
ʻO nā mea maikaʻi o ka hao: kūʻai a paʻa.