Abstract:
Disclosed are various techniques to optimize mining operations efficiency in which the mine utilizes mine trucks over a mine route. One such technique includes optimizing engine speed from a speed and torque management system. Such engine speed changes can be determined using information such as road grade data and mine stop locations, or whether the engine is in a retarder mode. Mine operation efficiency can be improved through use of adjustments made to a load acceptance curve. Changes to the load acceptance curve can be made through use of information such as road grade data and target truck speed. Improvements can be made through dynamically adjusted vehicle speed, such as through average route speed adjustments, or route segment adjustments in light of average route speed. A dynamic torque management system can provide efficiencies as limits are applied to torque using look ahead information.
Abstract:
A system, method, and apparatus include a controller structured to predict a change in speed of a vehicle in advance of upcoming terrain and inhibit a coasting event if the speed exceeds a limit. In one form a velocity of the vehicle is predicted using a physics based model of the vehicle within a look ahead window in front of a vehicle. Such a look ahead window can be distance or time based. In another, speed of a vehicle is monitored during a coasting event and is compared against a threshold to determine whether to remain coasting or re-engage an engine to a driveline. The threshold is a function of road grade, and permits a larger deviation from set speed at low grade than at high grade. The function can be based on road grade and vehicle weight.
Abstract:
Disclosed are various techniques to optimize mining operations efficiency in which the mine utilizes mine trucks over a mine route. One such technique includes optimizing engine speed from a speed and torque management system. Such engine speed changes can be determined using information such as road grade data and mine stop locations, or whether the engine is in a retarder mode. Mine operation efficiency can be improved through use of adjustments made to a load acceptance curve. Changes to the load acceptance curve can be made through use of information such as road grade data and target truck speed. Improvements can be made through dynamically adjusted vehicle speed, such as through average route speed adjustments, or route segment adjustments in light of average route speed. A dynamic torque management system can provide efficiencies as limits are applied to torque using look ahead information.