System and Method for Synchronizing ERPM and Gear Changes of a Work Vehicle
AssigneeCNH Industrial America LLC
InventorsYanming Hou, Garth Harvey Bulgrien
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Abstract
A method for operating a work vehicle in an automatic speed control mode is disclosed. The method may generally include receiving an input associated with a desired ground speed of the work vehicle, determining with a controller to implement a gear change and an erpm change in order to maintain the work vehicle at the desired ground speed, wherein the gear change includes a gear prep phase and a ratio change phase and controlling a timing parameter of at least one of the gear change or the erpm change such that the ratio change phase and the erpm change occur substantially simultaneously.
Claims20
A method for operating a work vehicle in an automatic speed control mode, the method comprising:
- receiving an input associated with a desired ground speed of the work vehicle;
- determining with a controller to implement a gear change and an erpm change in order to maintain the work vehicle at the desired ground speed, wherein the gear change includes a gear prep phase and a ratio change phase;
- and
- controlling a timing parameter of at least one of the gear change or the erpm change such that the ratio change phase and the erpm change occur substantially simultaneously.
A work vehicle, comprising:
- an engine;
- a transmission coupled to the engine;
- a controller configured to control an erpm change of the engine and a gear change of the transmission in order to maintain a desired ground speed of the work vehicle, the gear change including a gear prep phase and a ratio change phase,
- wherein the controller is further configured to control a timing parameter of at least one of the gear change or the erpm change such that the ratio change phase and the erpm change occur substantially simultaneously.
Dependencies are inferred from the claim text.