Improved piston

• Main Authors: CHEN HAO, ZHANG FENG, ZHU DEYI
• Format: Patent
• Language: Chinese; English
• Published: 27.03.2018
• Subjects: ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES; BLASTING; COMBUSTION ENGINES; CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; HEATING; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS; LIGHTING; MECHANICAL ENGINEERING; WEAPONS

The invention provides an improved piston. The improved piston comprises a piston body and a piston top. The piston top is embedded in the end part of the piston body, the piston top is a metal bar, the inner side axial end surface of the metal bar is provided with a thermoplastic polyimide layer, and the outer side axial end surface of the metal bar is provided with a ceramic layer. According tothe embodiment, the piston tightly combined by the thermoplastic polyimide and the metal bar is adopted, the piston ring structure of a traditional piston is removed, the improved piston has the advantages of better wear resistance and lower wear loss, thereby improving the energy consumption efficiency of an engine and improving performances of the engine. 本发明提供种改进型活塞，该改进型活塞包括活塞本体和活塞头，活塞头嵌设于活塞本体的端部，活塞头为金属棒，金属棒的内侧轴向端面上设有热塑性聚酰亚胺层，金属棒的外侧轴向端面上设有陶瓷涂层。本实施方式采用热塑性聚酰亚胺与金属棒紧密结合而成的活塞，去除了传统活塞的活塞环结构，具有更加轻、耐磨效果更好及摩擦损耗更低的优点，从而提高发动机的能耗效率，并且提高发动机的性能。