| 摘要 |
PURPOSE:To eliminate the condition that torque is lost during shifting by disengaging a first speed clutch in a half engaging condition while the clutch is disengaged completely after a second speed clutch is engaged in a half engaged condition, and the second speed clutch is engaged completely. CONSTITUTION:In a transmission 10 a controller 10B controls the ECMV valve 10C of solenoid valve according to operation of a speed change lever 10A, and thus oil pressure is regulated so that the multiple disc clutches 22, 23, 27 to 29 of gear main body mechanism 10D are disengaged. As a result, the rotation force input from the output shaft 12 of an engine 11 to the input shaft 13 of the mechanism 10D is transmitted to the output shaft 14 after shifting is made. The first speed clutch is disengaged to the half engaging condition and the second speed clutch is engaged for the half engaging condition, and thereafter the first speed clutch is disengaged completely and the second speed clutch is engaged completely. Torque exhaustion during shifting or hock is prevented from generating. |
