Nā koi ʻenehana no ka piston

1. E lawa ka ikaika, ka ʻoʻoleʻa, ka nui liʻiliʻi, a me ke kaumaha māmā e hōʻoia i ka ikaika inertial liʻiliʻi.
2. ʻO ka conductivity thermal maikaʻi, ke kūpaʻa wela kiʻekiʻe, ke kiʻekiʻe kiʻekiʻe, ka pale ʻana i ka corrosion, lawa ka wela wela, a me ka wahi hoʻomehana liʻiliʻi.
3. Pono e loaʻa kahi koena liʻiliʻi o ka hakakā ma waena o ka piston a me ka pā piston.
4. Ke hoʻololi ka mahana, e liʻiliʻi ka nui a me ke ʻano, a mālama ʻia ka palena liʻiliʻi ma waena o ka paia cylinder a me ka cylinder.
5. ʻO ke koena haʻahaʻa o ka hoʻonui ʻana i ka wela, ka umekaumaha kikoʻī liʻiliʻi, ka hoʻohaʻahaʻa lole maikaʻi a me ka ikaika wela.

Ke kuleana o ka piston
Me nā koi koʻikoʻi nui no ka mana, hoʻokele waiwai, palekana kaiapuni, a me ka hilinaʻi o ka mīkini i loko o ke kaʻa holoʻokoʻa, ua ulu ka piston i kahi huahana ʻenehana kiʻekiʻe e hoʻohui i nā ʻenehana hou e like me ka māmā a me ka ikaika kiʻekiʻe o nā mea hou, kūikawā. -shaped cylindrical composite surfaces, a kūikawā-ʻano pin puka, e hōʻoia i ka wela kū'ē, aahu ke kū'ē, paʻa alakaʻi, a me ka maikaʻi sealing hana o ka piston, e hoemi i ka friction hana poho o ka engine, a hoemi wahie hoʻohana Noise a me ka emissions.
I mea e hoʻokō ai i nā koi hana i luna, ua hoʻolālā ʻia ka pōʻai o waho o ka piston e like me kahi pōʻai waho kūikawā (convex to elliptical), ʻo ia hoʻi, ʻo ka ʻāpana cross perpendicular i ka piston axis he ellipse a i ʻole ellipse i hoʻololi ʻia. a hoʻololi ka ovality ma ke kuhikuhi axis e like me kekahi lula (e like me ka hōʻike ʻana ma ka Figure 1), me ka pololei ovality o 0.005mm;ʻO ka ʻaoʻao o waho o ka ʻāpana longitudinal piston he ʻāpana kūpono o kahi hana kiʻekiʻe, me ka pololei o ka contour o 0.005 a 0.01 mm;I mea e hoʻomaikaʻi ai i ka hiki ke hāpai o ka piston a hoʻonui i ka mana ʻenekini, ua hoʻolālā ʻia ka puka pine o ka piston haʻahaʻa kiʻekiʻe e like me ke ʻano micro cone kūloko a i ʻole ke ʻano maʻamau maʻamau curved surface type (special-shaped pin hole), me kahi ʻO ka pololei o ka nui o ka puka pin o IT4 a me ka pololei o ka contour o 0.003mm.
ʻO Piston, ma ke ʻano he ʻāpana automotive maʻamau, he mau hiʻohiʻona ʻenehana ikaika i ka mīkini.I loko o ka ʻoihana hana piston home, hoʻokumu pinepine ʻia nā laina hana machining me nā mea mīkini hana maʻamau a me nā mea hana kūikawā e hoʻohui i nā ʻano o ka ʻenehana piston.
No laila, ua lilo nā mea hana kūikawā i mea nui no ka mīkini piston, a ʻo kāna hana a me ka pololei e pili pono i nā hōʻailona maikaʻi o nā hiʻohiʻona nui o ka huahana hope.