Hoʻokaʻawale ʻia e ke ʻano hana ma ka piko o ka piston
① piston flat top: kūpono no ka mea puhi ahi mua no ka carburetor engine a me ka turbocurrent combustion chamber no ka mīkini diesel. He maʻalahi ka maikaʻi i ka hana ʻana, ʻo ka piston ka mea maʻalahi i ka hāʻawi ʻana i ka wela, a me ka maikaʻi piston liʻiliʻi.
② concave top piston: hiki ke hoʻomaikaʻi i ka hui ʻana o ka wai a me ka hana hoʻopau ʻana no ka diesel a i ʻole kekahi mau mīkini ʻaila.
③ convex top piston: i mea e hoʻomaikaʻi ai i ka pākuʻi ʻana, kūpono maʻamau no nā ʻenekini haʻahaʻa.

Ma ke ano o ke kapa
① skirt slot piston: kūpono no nā ʻenekini me ke anawaena cylinder liʻiliʻi a me ke kaomi kinoea haʻahaʻa.
② ʻaʻahu piston unslotted: hoʻohana nui ʻia i nā ʻenekini o nā kaʻa kaʻa nui.

Hoʻokaʻawale ʻia e ka pine piston
① piston kahi i hui ai ka axis noho pine i ke axis piston.
② piston pin noho axis perpendicular to the piston axis.