Isọri nipasẹ fọọmu eto ni oke pisitini
① Piston oke alapin: o dara fun iyẹwu ijona iṣaaju fun ẹrọ carburetor ati iyẹwu ijona turbocurrent fun engine diesel.The anfani jẹ rọrun lati ṣelọpọ, oke beari aṣọ ile ooru pinpin, ati didara piston kekere.
② concave oke piston: le mu adalu oloomi ati ijona išẹ fun Diesel tabi diẹ ninu awọn petirolu enjini.The anfani ni awọn rọrun lati yi awọn funmorawon ratio ati ijona iyẹwu apẹrẹ.
③ convex oke piston: lati le ni ilọsiwaju ipin funmorawon, gbogbo dara fun awọn ẹrọ agbara kekere.

Nipa ilana ti yeri
① piston Iho yeri: o dara fun awọn ẹrọ ti o ni iwọn ila opin silinda kekere ati titẹ gaasi kekere. Idi ti slotting ni lati yago fun imugboroosi, ti a tun mọ ni piston rirọ.
② yeri unslotted piston: okeene lo ninu awọn enjini ti o tobi tonnage oko nla.Bakannaa mọ bi a kosemi pisitini.

Isọri nipa pisitini pinni
① pisitini nibiti aaye ijoko pin pin si ọna pisitini.
② piston pin ijoko axis papẹndikula si awọn pisitini axis.