Abstract
In recent years, reducing the number of cylinders of an engine has been advanced for fuel saving. However, as the cylinder number is reduced, the torque fluctuation from the engine increases and the NV performance deteriorates. Therefore, the importance of torsional vibration reduction technology has been rapidly increased, and active research and development is under way. Among them, CPVA is attracted to attention because it effects in the full revolution range. In the previous studies, the theoretical analyses focusing on the pendulum path for the purpose of improving the performance of CPVA were carried out and the influence of the path on the vibration damping performance of CPVA was clarified. In order to clarify the influence of the pendulum path, in the theoretical analysis, the pendulum path was an arbitrary path and was represented by a 6-order function. In this report, experiments are carried out for the purpose of verifying the theoretical analysis developed by us in the previous reports. In experiments, two different CPVA are developed and used. Comparing the theoretical calculation results and experimental results, the effectiveness of the theoretical analysis is clarified.
