| 摘要 |
The transmission system comprises a splitter-type compound transmission (110) having a main transmission section (112) connected in series with a splitter-type auxiliary transmission section (114), with a double-acting splitter clutch (180) carrying a first set of clutch teeth for engaging a first array of clutch teeth associated with a first splitter gear upon axial movement of the splitter clutch in a first axial direction to a first position. A second set of clutch teeth engage a second array of clutch teeth associated with a second splitter gear upon axial movement of the splitter clutch in a second axial direction to a second axial position. At least one of the sets and arrays of clutch teeth are non-synchronised and non-blocked and have a pitch diameter of at least 2.5 inches and define a backlash exceeding 0.020 inches. The splitter clutch is controlled by a splitter actuator to move it into and maintain it in the first and second positions and not a third position, intermediate the first and second positions, where both the first set and array and the second set and array of clutch teeth are not engaged. A controller receives signals indicative of the position of the splitter selector switch and for processing them according to predetermined logic rules to issue command signals to the actuator. |
