System and method for performing shuttle shifts with a transmission of a work vehicle

摘要

A method for performing a shuttle shift with a transmission of a work vehicle is disclosed, wherein the transmission includes an input shaft, a counter shaft and a plurality of driven shafts extending generally parallel to the input and counter shafts. The method may include disengaging a clutch associated with a first directional gear of a directional shaft of the plurality of driven shafts. The first directional gear may be configured to rotate the directional shaft in a first direction. Additionally, the method may include engaging clutches associated with at least two gears of at least one secondary driven shaft of the plurality of driven shafts to reduce a rotational speed of the directional shaft and, after the rotational speed of the directional shaft is reduced, engaging a clutch associated with a second directional gear of the directional shaft such that the directional shaft rotates in a second direction.

主权项

1. A method for performing a shuttle shift with a transmission of a work vehicle, the transmission including at least an input shaft, an output shaft, a counter shaft, and a plurality of driven shafts, the method comprising:
initiating the shuttle shift by disengaging a clutch associated with a first directional gear of a directional driven shaft of the plurality of driven shafts and the input shaft to eliminate any driving connection between the input shaft and the directional driven shaft, the first directional gear being configured to rotate the directional driven shaft in a first direction; disengaging a clutch associated with a second driven gear of at least one secondary driven shaft of the plurality of driven shafts and the output shaft to eliminate any driving connection between the output shaft and the at least one secondary driven shaft; engaging or maintaining an existing engagement of two or more clutches associated with at least two gears of the at least one secondary driven shaft of the plurality of driven shafts to reduce a rotational speed of at least the directional driven shaft; and after rotational speed of at least the directional driven shaft is at least reduced, disengaging the two or more clutches associated with the at least two gears of the at least one secondary driven shaft of the plurality of driven shafts to permit at least the directional driven shaft to be brought up to speed in a second direction; engaging at least one clutch associated with a second directional gear operably engaged with the input shaft and the directional driven shaft of the plurality of driven shafts to cause rotation of at least the directional driven shaft in the second direction, while the output shaft remains disconnected; and after rotation of at least the directional driven shaft is brought up to speed in the second direction, engaging clutches associated with driven gears operably engaged with the directional driven shaft and the at least one secondary driven shaft of the plurality of driven shafts to establish a driving connection between the directional driven shaft and the at least one secondary driven shaft; and engaging clutches associated with driven gears operably engaged with the at least one secondary driven shaft of the plurality of driven shafts and the output shaft to establish a driving connection between the at least one secondary driven shaft and the output shaft, resulting in full engagement of the transmission to permit travel of the work vehicle in the second direction.