Performance Improvement in Leak Noise Reduction

One of the most important quality required for luxury vehicle is quieter cabin. Up to the present, for its improvement, various countermeasures have been carried out. For example, additional weather-strips were added around door for noise reduction and quieter engines were developed. But, with all these performance improvements, local leak noise becomes major remaining. In order to achieve quieter vehicles, the noise has to be stopped by every possible means. In this report, performance improvement in noise reduction is studied by connecting both ends of inner belt weather-strip and glass run. And the influence of connecting portion for glass sliding durability is evaluated.