Gangwechselvorrichtung mit einer Doppelkupplung

摘要

A twin clutch type speed-change apparatus is provided that can detect the engagement state of a dog clutch by use of the rotational speed difference between an inner main shaft (7) and an outer main shaft (6) and of a signal outputted from a gear position sensor (134). A rotational speed difference between an inner main shaft (7) and an outer main shaft (6) is detected by use of inner and outer rotational speed sensors (131, 132). When the engagement of the dog clutch is to be released, it is judged to complete the release if the signal outputted from the gear position sensor (134) indicates a speed step number after shifting and the rotational speed difference is zero. It is judged as a dog-tip caught state if the signal outputted from the gear position sensor (134) indicates a speed step number before or after shifting and the rotational speed difference is a transmission (TM) gear ratio difference. When the dog clutch is engaged, it is judged to complete the engagement if the signal outputted from the sensor (134) indicates a speed step number after shifting and the rotational speed difference is a transmission (TM) gear ratio difference between before and after shifting. It is judged as a dog-tip abutting state if the rotational speed difference is equal to or less than a transmission (TM) gear ratio difference before and after shifting.