캠의 형상과 밸브 변위선도에 대응하는 CVVL 종동절의 형상합성

In this paper, we present continuously variable valve lift (CVVL) mechanism which has one cam and swing-arm. This mechanism is composed of continuously changing swing-arm and driving cam. For this mechanism, we propose the synthesis of swing-arm profile which is contacted with valve. For this process we use envelope theory as this synthesis procedure of swing-arm profile. Kinematic analysis of this mechanism has used radius of curvature and pressure angle. We use ADAMS to examine the validity of CVVL mechanism.