STRUCTURE FOR DOUBLE CLUTCH TRANSMISSION

摘要

The purpose of the present invention is to provide a double clutch transmission structure which minimizes gear trains used for changing speed, enables eight forward speed-changing steps and one backward speed-changing step, and minimizes the full length. In particular, the purpose of the present invention is to provide a double clutch transmission structure which has a simplified structure using four or five gear trains and four synchronizers to reduce the overall weight and enables eight forward speed-changing steps and one backward speed-changing step. The double clutch transmission structure enables eight forward speed-changing steps and one backward speed-changing step using four or five gear trains without increasing the full length; reduces production costs and the number of components; and improves fuel efficiency by minimizing the weight increase of the transmission by reducing the full length in comparison with existing double clutch transmissions which increase the full length when adding gear trains for increasing the numbers of speed-changing steps.