Internal combustion engine piston

Abstract

Abstract Translated from Japanese (57)【要約】 【課題】 製作が容易で、しかも、燃焼室での耐久性を 向上させることができる内燃機関のピストンを提供す る。 【解決手段】 頂面１５に燃焼室１１がくぼませて形成 されるとともに、この燃焼室１１の外周位置に冷却用空 洞２１が形成され、かつ、この冷却用空洞２１は上部内 周より下部内周が小さく形成された、内燃機関のシリン ダ１内を往復動する内燃機関のピストン１０において、 燃焼室１１がシリンダ１内に開口する内周面部１４の上 縁とピストン１０の頂面１５との角部には、前記冷却用 空洞２１の上部内周形状に合わせて肉厚を大きく変化さ せない程度に大きなアール１７を施す。 (57) [Problem] To provide a piston of an internal combustion engine that can be easily manufactured and can improve durability in a combustion chamber. SOLUTION: A combustion chamber 11 is formed so as to be depressed on a top surface 15, and a cooling cavity 21 is formed at an outer peripheral position of the combustion chamber 11, and the cooling cavity 21 is formed in a lower portion than an upper inner periphery. In the piston 10 of the internal combustion engine reciprocating in the cylinder 1 of the internal combustion engine, the circumference of which is formed small, At the corner between the upper edge of the inner peripheral surface portion 14 in which the combustion chamber 11 opens into the cylinder 1 and the top surface 15 of the piston 10, the thickness is not significantly changed in accordance with the upper inner peripheral shape of the cooling cavity 21. A large radius 17 is applied.

Inventors

• 👤 Tadashi Iijima
• 👤 正 飯島
• 👤 Nobuhiko Inada
• 👤 順彦 稲田

Bibliographic Details