수동 변속기용 카본 마찰재 싱크로나이져 링의 개발 및 적용

Various friction materials are used in synchronizer rings of manual transmissions. Stable characteristics of friction material has been required in terms of shift feeling and durability that are important requirements for customer satisfaction. Durability and higher μ of carbon are superior to other friction materials used for this application. Basically, synchronizer ring with friction lining is made of base material for the ring, which can be brass, steel or powdered metal. Friction lining can be made from carbon, paper, Mo etc. Carbon lined brass synchronizer ring has been developed and introduced into our SUV and passenger cars for global markets. Test data showed significant improvement of durability, consistent friction coefficient over the durability test period.