| 摘要 |
<p>A gearshift control system comprises an electrical control unit (1) which operates hydraulic valves (14) controlling a hydraulic gearshift actuator. The vehicle in which the system operates has a dashboard control (5) to preselect a gear change, which is actuated by depressing the clutch pedal (3) operating a switch (2), both the switch (2) and control (5) being connected to the unit (1). The system includes means for updating the electronic stored values representative of the position of the gearshift actuator. The system also includes means for aborting a gearshift if, after given time periods, either the shift has not been completed, or the clutch pedal is released. In any event the gearshift will be aborted if the clutch is released during a change. The system will not initiate a gearshift unless the clutch pedal is held down for a given period of time. <IMAGE></p> |
