| 摘要 |
PURPOSE:To shorten the speed rechange processing time by detecting with a speed change release sensor during running transmission a speed change gear for its meshing release, disconnecting a clutch and operating the speed change gear by an automatic speed change control device. CONSTITUTION:Speed change release is detected during running transmission by stroke sensors 18, 19. A pressure control valve 21 is output once disconnecting a clutch 3, and speed change control valves 13, 14 are output pressing a speed change clutch into a side of a speed change gear remeshed and connecting the clutch 3. These controls are performed by a command of a CPU in an automatic speed change control device 4. In this way, the speed rechange processing time can be shortened by enabling the necessity to be eliminated for operating and confirming the speed change gear to its neutral position. |
