A cleaning system for a combine harvester having an adjustable throwing angle is provided. The cleaning system includes a shoe for holding a sieve of the cleaning system, a mounting surface disposed on the shoe, and a rocker arm either movably or removably connected to the mounting surface. The rocker arm is configured to be mounted to the mounting surface at at least two different locations on the mounting surface. Each location resulting in a different throwing angle of the shoe of the cleaning system.

A delivery device is located at an inlet side of the cleaning shoe in a combine harvester. The delivery device is controlled in order to control a feed rate of grain that is fed to the cleaning shoe. One or more controllable subsystems are controlled based upon the feed rate.

A cleaning system for use in an agricultural combine harvester comprises a crop-processing platform and a rotatable finger. The crop-processing platform is arranged to receive crop material thereon and reciprocate in a fore-aft manner to process crop material. The finger auger extends laterally in proximity to the crop-processing platform and comprises flighting of fingers arranged to convey crop material laterally upon rotation of the finger auger.

A grain cleaning apparatus for a combine harvester has a linkage system for moving a grain pan or sieve with an oscillatory movement. A configuration of the linkage system is adjusted for example in dependence on a lateral inclination of the combine harvester, in particular by setting the position of a pair of arms of the linkage system, so that some points within the linkage system are fixed and other points are adjustable depending on the angle of inclination (but then remain static for a constant angle of inclination).

A system for an agricultural harvester includes a chopper assembly configured to separate a harvested material into debris and stalk. A primary extractor is configured to remove debris from the harvester. A sensor system is configured to capture data associated with harvested material conditions downstream of the primary extractor. A computing system includes one or more processors and one or more non-transitory computer-readable media that collectively store instructions that, when executed by the one or more processors, configure the computing system to perform operations. The operations include obtaining the data associated with the associated harvested material conditions downstream of the primary extractor, determining a current foliage ratio based on the data, determining an error between the current foliage ratio to a desired foliage ratio, and generating a harvest-related parameter of the primary extractor based at least in part on the error.

A cleaning system of a combine harvester includes a fan, a first valve member positioned within a first duct of the fan for throttling the flow of air through the first duct, a second valve member positioned within the second duct of the fan for throttling the flow of air through the second duct, a first actuator for adjusting a position of the first valve member, a second actuator for adjusting a position of the second valve member, first and second sensors for sensing air pressure at first and second sieves, and a controller. The controller is configured to receive the sensed air pressures from the sensors, compare the sensed air pressures with either each other or threshold values, and transmit instructions to one or both of the actuators to adjust the positions of one or both of the valve members.

A method and an apparatus for separating a crop flow on at least one conveying and cleaning unit, particularly a top sieve, of a combine harvester, wherein the conveying and cleaning unit is excited to a longitudinal oscillation and a transverse oscillation. The transverse oscillation is controlled depending on at least one state, wherein least one state for controlling the transverse oscillation is the inclination of the combine harvester, wherein at least one further state for controlling the transverse oscillation is the grain purity, particularly the grain purity of a main crop flow. The transverse oscillation is pre-controlled depending on the inclination of the combine harvester and fine-tuned depending on the grain purity.

A combine harvester includes a housing having a rear hood and defining an interior, a blower for generating an air stream in a substantially rearward direction, and a cleaning system separating residue from a crop material such that the residue is transported via the air stream rearwardly to be discharged from the housing. A chopper rotor assembly is disposed within the interior below the rear hood and includes a chopper rotor having a plurality of blades for chopping the residue as it is received via the air stream. A chopper housing is disposed within the interior and defines an inlet of the chopper rotor for receiving the residue and an outlet spaced rearward from the chopper rotor for discharge of the chopped residue from the interior of the housing. An air gap through which the air stream may exit the interior is defined between the rear hood and chopper rotor.

A combine harvester has multiple working mechanisms for carrying out specific treatment subprocesses of an overall treatment process for processing crop, and a driver assistance system for controlling the working mechanisms, which includes a memory for storing data and a computing device for processing the data stored in the memory, wherein the driver assistance system, together with the particular working mechanisms provided for carrying out the treatment subprocesses, forms independently operating automated adjusting mechanisms which are utilized for optimizing the control of the working mechanisms for carrying out the treatment subprocesses, wherein a process supervisor is assigned to the driver assistance system for controlling individual automated adjusting mechanisms and a data exchange of the automated adjusting mechanisms with one another.

This disclosure relates to a method and device for the operation of a combine harvester with multiple work elements for harvesting a crop via a driver assistance system. In one example implementation, a method for operating such a combine harvester includes determining separately a harvest setting for the crop and a machine configuration of the combine harvester, preselecting a process control strategy among a plurality of process control strategies based on the harvest setting and machine configuration wherein each of the plurality of process control strategies is aimed at fulfillment of at least one harvesting quality criterion stored in the memory of the combine harvester, and automatically determining at least one machine parameter for the work elements of the combine harvester according to the preselected process control strategy and controlling the work elements corresponding to the at least one machine parameter.