Análise do sistema de acionamento de válvulas de um motor monocilíndrico

Abstract

This work presents an analysis of a valve drive system applied in a single-cylinder engine of four stroke, focused on high energy efficiency. It’s so important to understand the running of engine and its parts to develop changes aiming at good performance with safety. One of the most important system is the valve train. An analysis based on studies already done allows to understand its behavior, as well as obtain the main forces involved to evaluate it and perform the sizing of new spring appropriate for the system according to its operation. The development of a simplified model allows to realize calculations providing good results for the present purpose that in addition with the simulation can supply required parameters to size the new spring and evaluate it as for its application. Through the bibliographical review was possible to develop a methodology to perform the kinematic analysis, dynamic analysis and posteriorly the dynamic simulation to confront the results and validate the used method. From the obtained results the new spring was designed satisfying the imposed conditions by the system.