Abstract
Key words:
internal combustion engine, valve spring, vibration
Abstract
The paper considers the surge of a spring, retained at one end and controlled by a cam at the other end. The dynamic stress and the dynamic response factor due to the excitation harmonics of valve lift function are being analysed and the significant values are being discussed. The 3D presentation over the operating range of the engine is being used for both, the response factor and the shearing stress. By means of that stress the additional dynamic force at the moving end of the spring is being calculated