摘要：【中文】本发明属于发动机技术领域，具体涉及提出了一种柱塞式限压阀及具有其的发动机，本发明提出的柱塞式限压阀通过在调压弹簧和阀芯之间设置一种可转动机构使柱塞式限压阀工作时，在进油压力的作用下，阀芯受到向上的作用力不断增大，进而挤压碟形弹簧，使碟形弹簧被压平而挤压球体，迫使球体在滚道滚动，球体依靠和碟形弹簧之间的摩擦力带动碟形弹簧转动，碟形弹簧又将力传递给阀芯，从而实现柱塞阀每打开一次就转动一定的角度。当柱塞阀关闭时，阀芯对碟形弹簧的力减小，碟形弹簧恢复变形，此时球体几乎不受碟形弹簧的挤压，在复位弹簧的作用下，滚动到初始位置。使阀体与阀芯、阀座与阀芯均匀磨损，从而降低卡滞或密封不严现象的发生。 【EN】The invention belongs to the technical field of engines, and particularly relates to a plunger type pressure limiting valve and an engine with the same. When the plunger valve is closed, the force of the valve core on the disc spring is reduced, the disc spring is restored to deform, and at the moment, the ball body is hardly extruded by the disc spring and rolls to the initial position under the action of the return spring. The valve body and the valve core, and the valve seat and the valve core are uniformly abraded, so that the phenomenon of clamping stagnation or untight sealing is reduced.