| 摘要 |
PURPOSE:To prevent a synchromesh mechanism and the like from strength degradation while preventing the occurrence of danger such as neutral traveling by inhibiting speed change motion when lubricating oil temperature of a sub- transmission is low. CONSTITUTION:A sub-transmission 13 is provided with an oil temperature detector 15 the output of which is sent to the input of a speed change control signal generator 16 to inhibit the speed change motion when lubricating oil temperature in the sub-transmission 13 is low. Thus, since a clutch is not early engaged during speed change, a synchromesh mechanism and the like can be prevented from the degradation of strength. Also, since the neutral condition does not continue for a long time, danger such as neutral traveling due to the disability of synchronization in descending a slope can be prevented. |
