| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a control system of a mechanical automatic transmission which can gear irrespective of viscosity of lubricating oil. <P>SOLUTION: A gear is switched (S10). When operation of a variable speed actuator is incomplete and gearing is failed, and a temperature of the lubricating oil is at a predetermined temperature or lower, slip control of an engagement clutch is conducted to increase a rotation speed of an engine (S12-S16). Then, a clutch on an unengaged side is connected (S18). Again, a first synchro mechanism is operated and a gear stage on a disconnected outer clutch side is shifted from fourth to second (S20). The temperature of the lubricating oil is higher than the predetermined temperature and the number of times of retries of gearing is twice or more, it is determined that the transmission 30 is broken (S22-S24). <P>COPYRIGHT: (C)2013,JPO&INPIT |
