| 摘要 |
<p>PROBLEM TO BE SOLVED: To protect clutches in the transmission of a working vehicle which uses a plurality of speed change hydraulic clutches with the main clutch being of the wet multiple disk type. SOLUTION: In this transmission which uses a plurality of speed change hydraulic clutches, the clutch with the large clutch capacity is used as the main clutch. The low-speed hydraulic clutch for shifts between high and low speed is used as the main clutch A. The pedal stroke of the main clutch A consists of three stages, i.e., switching between high and low speed (D1), inching (D2), and joint-turning preventive clutch disconnection (D3). When a shift lever for switching between high and low speed is located on the high speed side, the low-speed clutch A is forcibly actuated at initial stages, and after the low- speed clutch A is connected, shift to the high-speed clutch B is made.</p> |
