| 摘要 |
PURPOSE:To inform a driver so as to transfer from the present two-wheel drive state to other drive state such as four-wheel drive by sensing a slip on the drive side. CONSTITUTION:A speed change electronic control device 600 is constituted of a main speed changer shift lever position sensor 601 detecting the preset range of a main speed changer, a transfer shift lever position sensor 602 detecting the preset range of a sub-speed changer, a car speed sensor 603, a throttle opening sensor 604, a central processing unit CPU, RAM performing the speed change point processing, and ROM storing the speed change pattern such as the speed change point and lock-up point, and controls the excitation of solenoid valves S1-S4 in a hydraulic control unit. A display electronic control device 700 is constituted with a front wheel rotating speed sensor 701, a rear wheel rotating speed sensor 702, and a comparison control circuit 703; and when the difference between the front and rear wheel rotating speeds becomes a predetermined value or moe, the display unit is turned on. |
