In one embodiment, a system, comprising: one or more pairs of oppositely rotatable, laterally extending rolls, wherein for each pair, at least one of the rolls is moveable relative to the other of the rolls; a hydraulic circuit, comprising: a tensioner circuit comprising: for each pair of rolls, one or more pairs of hydraulic cylinders arranged in parallel, each configured to resist movement of the at least one of the rolls at a respective end of the at least one of the rolls; an accumulator arranged in parallel to the hydraulic cylinders; and plural control valves; and a computing system configured to cause the one or more pairs of hydraulic cylinders to adjust the resistance to movement of the at least one of the rolls of the respective pair of rolls by sending signals to one or more of the plural control valves.

A grain harvesting articulated combine of a forward crop processing power unit (PPU), a rear grain cart, and an articulation joint that connects the PPU with the rear grain cart and includes an auger assembly that moves clean grain from the PPU to the rear grain cart. Two pump circuits deliver power to a pair of hydrostatic motors located in the rear grain cart, one pump circuit hydrostatic motor driving the grain unloader assembly, the other pump circuit hydrostatic motor driving the ascending fill lift auger assembly, the drag auger assemblies, and the articular joint auger assembly. Power (inertia) can be harvested from auger assemblies not moving grain for startup or clog clearing of the other auger assemblies.

An agricultural harvester having a combine and a header is provided. The combine includes a primary hydraulic system for use in operations of the combine. The primary hydraulic system includes primary hydraulic fluid. The header is attachable to the combine and includes a header hydraulic system having a header hydraulic fluid and a heat exchanger operatively connected to the primary hydraulic system and the header hydraulic system.

An agricultural harvester having a combine and a header is provided. The combine includes a primary hydraulic system for use in operations of the combine. The primary hydraulic system includes primary hydraulic fluid. The header is attachable to the combine and includes a header hydraulic system having a header hydraulic fluid and a heat exchanger operatively connected to the primary hydraulic system and the header hydraulic system.

In one aspect, an agricultural harvester may include a harvesting implement having a belt support assembly configured to support a conveyor belt of the harvesting implement as the conveyor belt moves relative to the belt support assembly. The system may also include a sensor provided in operative association the belt support assembly, with the sensor being configured to detect a parameter indicative of a force exerted on the belt support assembly as the conveyor belt moves relative to the belt support assembly. Furthermore, the system may include a controller communicatively coupled to the sensor, with the controller being configured to monitor the amount of the plant materials entering the harvester based on measurement signals received from the sensor.

In one aspect, a method is disclosed for automatically controlling a height of an implement of an agricultural work vehicle relative to a ground surface. The method may include monitoring the height of the implement and a vehicle speed; determining an implement height error by comparing the height of the implement with a predetermined target height; and calculating a sensitivity factor based on a sensitivity setting. When the monitored vehicle speed is greater than a predetermined speed threshold, the sensitivity factor may equal a first constant sensitivity value that is proportional to the sensitivity setting. The method may include reducing the sensitivity factor to less than the first constant sensitivity value when the monitored vehicle speed becomes less than the predetermined speed threshold and adjusting the height of the implement relative to the ground surface based on the implement height error and the sensitivity factor.

In one aspect, a method is disclosed for automatically controlling a height of an implement of an agricultural work vehicle relative to a ground surface. The method may include monitoring the height of the implement and a vehicle speed; determining an implement height error by comparing the height of the implement with a predetermined target height; and calculating a sensitivity factor based on a sensitivity setting. When the monitored vehicle speed is greater than a predetermined speed threshold, the sensitivity factor may equal a first constant sensitivity value that is proportional to the sensitivity setting. The method may include reducing the sensitivity factor to less than the first constant sensitivity value when the monitored vehicle speed becomes less than the predetermined speed threshold and adjusting the height of the implement relative to the ground surface based on the implement height error and the sensitivity factor.

In one embodiment, a simulation system for adjusting settings of a vehicle having an implement coupled thereto, the simulation system comprising: one or more feedback sensors for detecting physical movement of the implement; and a computing system configured by instructions to: receive predefined simulated inputs corresponding to movement of the implement attached to the vehicle, the simulated inputs being associated with anticipated physical movement of the implement; based on the inputs, provide an output to a control system operably coupled to the implement, the output causing physical movement of the implement based on one or more settings; receive feedback from the one or more feedback sensors indicating movement of the implement responsive to the output; compare physical movement of the implement with the anticipated physical movement associated with the simulated inputs; and in response to detecting a difference between the physical movement of the implement and the anticipated physical movement, cause a change in at least one of the one or more settings corresponding to control of the implement based on the feedback.

In one embodiment, a simulation system for adjusting settings of a vehicle having an implement coupled thereto, the simulation system comprising: one or more feedback sensors for detecting physical movement of the implement; and a computing system configured by instructions to: receive predefined simulated inputs corresponding to movement of the implement attached to the vehicle, the simulated inputs being associated with anticipated physical movement of the implement; based on the inputs, provide an output to a control system operably coupled to the implement, the output causing physical movement of the implement based on one or more settings; receive feedback from the one or more feedback sensors indicating movement of the implement responsive to the output; compare physical movement of the implement with the anticipated physical movement associated with the simulated inputs; and in response to detecting a difference between the physical movement of the implement and the anticipated physical movement, cause a change in at least one of the one or more settings corresponding to control of the implement based on the feedback.

A process for weighing a harvested crop stored in a tank of a harvesting machine, a frame supporting the tank is mounted on a wheel set by a lifting device which is operable to move the frame upwardly and downwardly upon control of a hydraulic system. The process controlling the hydraulic system and includes the steps of: determining at least one height position of the frame on the displacement course; measuring a lowering pressure and a raising pressure in the hydraulic system at the position; calculating, from the measured pressures, a balancing pressure for the frame. The process is performed before unloading the stored crop in order to calculate a loaded balancing pressure and after the unloading in order to calculate an empty balancing pressure. The weight of the stored crop is calculated from a pressure variation between the loaded balancing pressure and the empty balancing pressure.