He aha ka poloka engine?
Nā mea
He aha ka poloka engine (a he aha kāna hana)?
ʻO ka poloka ʻenekini, i ʻike ʻia hoʻi ʻo ka poloka cylinder, aia nā mea nui a pau i hana ʻia ma lalo o ka ʻenekini. Maanei e ho'ololi ai ka crankshaft, a e ne'e na pistons i luna a i lalo i loko o ka cylinder bores, i ho'ā 'ia e ka puhi wahie. I kekahi mau hoʻolālā ʻenekini, paʻa pū ia i ka camshaft.
Hana ʻia me ke alumini alumini ma nā kaʻa o kēia wā, i hana mau ʻia me ka hao hao ma nā kaʻa kahiko a me nā kaʻa. ʻO kāna hana metala e hāʻawi iā ia i ka ikaika a me ka hiki ke hoʻololi pono i ka wela mai nā kaʻina puhi ahi i ka ʻōnaehana hoʻohuihui. ʻO ka pahu alumini ka mea maʻamau i kahi pahu hao i kaomi ʻia no nā lua piston a i ʻole kahi uhi paʻakikī kūikawā i hoʻopili ʻia i nā lua ma hope o ka mīkini.
I ka hoʻomaka ʻana, he poloka metala wale nō ka poloka e paʻa ana i nā ʻōhua cylinder, ka lole wai, nā ala ʻaila, a me ka pahu pahu. ʻO kēia kapa wai, e like me ka mea i kapa ʻia i kekahi manawa, he ʻōnaehana kaʻawale o nā ala e holo ai ka mea hoʻomaha i loko o ka poloka engine. Hoʻopuni ka ʻaʻahu wai i nā pahu o ka ʻenekini, ʻo ia ka mea maʻamau ʻehā, ʻeono, a ʻewalu paha, a aia nā pistons.
Ke hoʻopaʻa ʻia ke poʻo kikohoʻe i ka piko o ka pahu pahu, e neʻe nā pistons i luna a i lalo i loko o nā cylinders a hoʻohuli i ka crankshaft, ʻo ia ka mea e hoʻokele ai i nā huila. Aia ka pā aila ma ke kumu o ka poloka cylinder, e hāʻawi ana i kahi waihona aila mai kahi e hiki ai i ka paila ʻaila ke huki a hāʻawi i nā ala ʻaila a me nā ʻāpana neʻe.
ʻO nā ʻenekini hoʻoluʻu ea, e like me ka VW kahiko ʻehā pahu a me ka Porsche 911 hāmeʻa kaʻa kaʻa mua, ʻaʻole loaʻa kahi pahu pahu. E like me ka ʻenekini kaʻa kaʻa, kaʻa ka crankshaft i nā pahu ʻenekini i hoʻopaʻa ʻia. Hoʻopili ʻia iā lākou he "jugs" cylindrical ʻokoʻa kahi e neʻe ai nā piston i luna a i lalo.
Nā pilikia maʻamau me nā poloka engine
ʻO ka poloka ʻenekini he ʻāpana metala nui a pololei i hoʻolālā ʻia no ke ola o ke kaʻa. Akā i kekahi manawa ua hewa nā mea. Eia nā hāʻule maʻamau o ka pahu cylinder:
Leak wai hooluolu o waho
He puddle wai/antifreeze ma lalo o ka mīkini? Hiki ke hoʻokumu ʻia kēia ma muli o ka liki ʻana mai ka pā wai, radiator, puʻu wela, a i ʻole ka hose wehe, akā i kekahi manawa no ka poloka ʻenekini ponoʻī. Hiki i ka poloka a lī, a i ʻole e hemo a ʻele paha ka palaka. Hiki ke hoʻololi maʻalahi i nā pulu hau, akā hiki ʻole ke hoʻōla ʻia nā māwae.
ʻO ka pōʻaiapuni ʻeleʻele
ʻO ka hopena, ma hope o nā haneli haneli mau mile, ʻaʻole i kūpono nā apo piston. I nā hihia liʻiliʻi, hiki ke hana ʻia kahi māwae ma ka paia cylinder, e alakaʻi koke i ka pono no ka hoʻoponopono ʻana i ka ʻenekini. Hiki ke hoʻoluhi hou ʻia nā puʻupuʻu ʻeleʻele i mea e hoʻokomo ai i nā pistons nui, a ma kahi pine (a i ʻole i nā poloka alumini) hiki ke hoʻokomo ʻia nā laina hao e hoʻomaʻamaʻa hou i nā paia.
Poka engine poloka
Ma muli o nā haumia i hoʻokomo ʻia i loko o ka metala i ka wā o ke kaʻina hana, ʻaʻole pilikia pinepine nā hemahema i ka hoʻolei ʻana no ka manawa lōʻihi. I ka hopena, hiki i kahi poloka i hoʻoheheʻe maikaʻi ʻia ke hoʻomaka e kahe a kahe i ka aila a i ʻole ka mea hoʻomaha mai ka wahi hemahema. ʻAʻole hiki iā ʻoe ke hana i kekahi mea i kahi poloka ʻenekini porous no ka mea e hemahema ia mai ka lā i hoʻolei ʻia ai. Eia nō naʻe, ʻaʻole liʻiliʻi nā leaks e hiki mai ana ma muli o ka poloka porous, a inā ʻike ʻia lākou i ka manawa o ka mea hana hana, pono e hoʻololi ʻia ka kaʻa me ka uku ʻole.
