| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a revolution synchronizing mechanism for a transmission in which a mechanical synchronizer is not provided and the shifting gears are properly meshed by an electronic synchronized action. SOLUTION: In the transmission 301 having no mechanical synchronizer, the revolution synchronizing mechanism provides the transmission 301 arranging a counter shaft 306 in parallel with a main shaft 307, a control unit 211 controlling the engine speed, a clutch controlling means 212 engaging and disengaging the clutch, a speed gear shifting means 202 selecting the speed gears ratio of the transmission, a revolution controlling means 313 to accord a counter shaft revolution with a predetermined value, and a control unit 205 controlling an actual gear ratio to the target gear ratio by the above mentioned means 212, 202, 313 after detecting the driving conditions and determining the target speed gear ratio. The control unit 205 can carry out the revolution synchronizing control by the action of the revolution controlling means controlling the revolution difference between the main shaft revolution and the main gears 318 rotating freely on main shaft according to the counter shaft revolution so as to put into a predetermined range when the speed gear is shifted. Furthermore, the control unit 205 can stop the revolution synchronizing control and try again the same procedures if the synchronized shifting is not completed within the predetermined elapse time counting from the start of the shifting.</p> |
