The Characteristics on Dynamic Strength of Valve Spring

Abstract

Role of engine valve spring is to rightly turn intake air and exhaust valve for engine for automobile in cam profile way on and off. Surging phenomenon of valve spring becomes a problem with speedup of the engine as jump of valve and cause of bounce. However, analysis case is little for the dynamic behavior, since it is complicated. In this study, the model which measured the actual valve spring is used. It is recognized that the form of the seat end of the spring changes the stress state in a valve spring. Static, dynamic behavior and stress state of valve spring are examined using the finite element method.