| 摘要 |
<p>A microprocessor (1) controlling a shuttle shift transmission (10) may be programmed while the gearshift lever (6) is in neutral to preselect a forward and reverse gear into which the transmission (10) is shifted when the gearshift lever (6) is moved to a forward or reverse position. The microprocessor (1) may also be programmed so that, in shifting between forward and reverse, the forward and reverse gears selected differ by a preprogrammed amount. The microprocessor (1) may be programmed to control vehicle deceleration by selecting gears in the transmission (10) so that the transmission (10) and/or the vehicle engine (7) become a load for decelerating the vehicle. In a diagnostic mode, the microprocessor (10) executes a routine to develop a clutch calibration value which may later be used to insure uniformity of clutch operation in different vehicles, or in the same vehicle over a period of time. The normal speed ratio matching which normally takes place when shifting gears may be manually overridden by operator manipulation of the gearshift lever (6). The override may either terminate speed ratio matching for a particular shift, or the override may be effective for a fixed interval of time. <IMAGE></p> |
