为深入研究活塞环径向压力分布的规律,本文分析了活塞环径向压力分布传统测量法的缺点,研究了活塞环变形与径向压力的关系,提出了一种电测量方法,能够精确测量活塞环径向压力分布。实际测量结果表明,采用该新方法测量活塞环径向压力分布,结果稳定可靠,重现率高,并具有较高的精度。 In order to further study the rule of radial pressure distribution of piston ring, this paper analyzes the shortcoming of the traditional measurement method of piston ring radial pressure distribution, studies the relationship between piston ring deformation and radial pressure, and proposes an electrical measurement method which can accurately measure Piston ring radial pressure distribution. The actual measurement results show that the new method is used to measure the radial pressure distribution of piston ring, the result is stable and reliable with high reproducibility and high precision.