Patent ID: 8206264
Filing Date: 2012-06-26
Classification: B60W,F16H,Y10T

Abstract:
1. A load control system for a work vehicle comprising: set rotation speed detection means for detecting a set rotation speed of an engine of the work vehicle; actual rotation speed detection means that senses an actual rotation speed of the engine; continuously variable speed change device that receives power from the engine of the work vehicle; speed change position detecting means for detecting a speed change operating position of the continuously variable speed change device; operating means for speed-shifting the continuously variable speed change device; and control means for controlling the operation of the operating means with the set rotation speed of the engine being unchanged, the control means including: wherein the data table includes a first region and a second region and the drop amount is larger in the second region than in the first region; wherein the correlation data is set such that a change rate of the operating position relative to the drop amount in the second region becomes smaller than a change rate of the operating position relative to the drop amount in the first region; and wherein the second region has a stabilizing point where the actual rotation speed of the engine does not fall due to a running load.