Piston head

The invention relates to a piston head comprising a piston head body. A circumferential side wall of the piston head body is provided with at least two sealing ring grooves for mounting sealing rings,spaced distances exist between the adjacent sealing ring grooves, and a pressure relief oil stopping groove is arranged at the position between every two of the at least two adjacent sealing ring grooves and on the circumferential side wall of the piston head body. The piston head is simple in structure and low in preparation cost, can effectively reduce consumption of lubricating oil, improves the lubricating performance of a piston and a cylinder sleeve, meanwhile, prevents coke generation generated by the fact that the lubricating oil enters a combustion chamber, prevents high temperatureand high pressure gas from entering a crankcase, and avoids the explosion risk of the crankcase. 本发明涉及一种活塞头，包括活塞头本体，所述活塞头本体的圆周侧壁上设有至少两个用于安装密封环的密封环槽，相邻密封环槽之间具有间隔距离，至少两个相邻的密封环槽之间的活塞头本体的圆周侧壁上设置一个泄压截油环槽。本发明结构简单、制备成本低，可有效降低润滑油消耗，提高