A method of path planning for an autonomous vehicle to make a turn includes receiving a request for a turn of a vehicle from a current swath to a next swath in a work area. The work area has a headland at a periphery thereof, and the headland is characterized by a guidance line therethrough. The method further includes receiving information of the current swath, information of the next swath, and information of the guidance line, and determining a trajectory of the turn based on the information of the current swath, the information of the next swath, and the information of the guidance line. The trajectory includes one or more segments. At least a portion of a first segment of the one or more segments follows the guidance line in the headland. The method further includes, outputting the trajectory to a control system of the vehicle for executing the turn.

A work vehicle includes a hybrid transmission to vary power from an engine and output the power to a travel device, the hybrid transmission including an electric transmission including a motor generator and a gear transmission including a gear driver. The work vehicle includes an inverter to drive the motor generator. The work vehicle includes a pump to cool the inverter by supplying, to the inverter, a refrigerant to cool the motor generator.

A method, system and robot, wherein the robot includes two or more sensing devices, sensor A and sensor B, mounted thereon and moves forward along an axis parallel to the rows of plants, being autonomously steered by exerting angular corrections to place the robot as close as possible to the centerline between the rows of plants, wherein the method and system includes the following: (ii) dividing a two-dimensional grid of square cells into groups of cells; (iii) obtaining data points using sensor A and sensor B; (vii) moving the robot: (a) by turning right; or (b) by turning left; or (c) forward without turning,
depending on whether each group of cells is calculated as low-activated, high-activated or not activated using the data points.

A mobile work machine has a drive unit for driving at least one drive element and/or a working element. The drive unit is hydromechanical drive unit with at least one internal combustion engine and hydraulic energy transmission unit with at least one hydraulic pump and a hydraulic motor. In normal operation, the motor shaft of the internal combustion engine rotates at a normal speed (n_0). Conversely, in a limit temperature operation in which a sensed actual operating temperature of the internal combustion engine or another part of the drive unit is higher than or equal to a target limit temperature (T_limit), an electrical control unit and/or electronic control unit controls the internal combustion engine in such a way that the motor shaft of the internal combustion engine rotates at a first speed (n_target) that is higher than the normal speed (n_0) of the motor shaft in normal operation.

A method for automatically manoeuvring an agricultural vehicle to at least a predefined path segment at a farmyard comprising the steps of gathering all predefined path segments at the farmyard, determining all predefined path segments being free from an obstacle, selecting a free path segment from the predefined path segments being free from an obstacle and calculating a path from the position of the agricultural vehicle to the selected free path segment.

A navigation system for a host vehicle is provided. The system may comprise at least one processing device programmed to receive, from a camera, a plurality of images representative of an environment of the host vehicle; analyze the plurality of images to identify at least one vehicle-induced occlusion zone in an environment of the host vehicle; and cause a navigational change for the host vehicle based, at least in part, on a size of a target vehicle that induces the identified occlusion zone.

A method of path planning for an autonomous vehicle to make a turn includes receiving a request for a turn of a vehicle from a current swath to a next swath in a work area. The work area has a headland at a periphery thereof, and the headland is characterized by a guidance line therethrough. The method further includes receiving information of the current swath, information of the next swath, and information of the guidance line, and determining a trajectory of the turn based on the information of the current swath, the information of the next swath, and the information of the guidance line. The trajectory includes one or more segments. At least a portion of a first segment of the one or more segments follows the guidance line in the headland. The method further includes, outputting the trajectory to a control system of the vehicle for executing the turn.

A working vehicle includes a steering device including a steering handle, a vehicle body to travel with either manual steering by the steering handle or automatic steering of the steering handle based on a traveling reference traveling line, and a controller to permit automatic steering based on steering angles of the steering device obtained when the vehicle body travels a predetermined distance while being steered by the manual steering.

A method of maintaining vehicle formation includes receiving a desired along path distance; receiving a plurality of waypoints corresponding to a plurality of positions along a path of the lead vehicle; determining a dynamic path for the follower vehicle by spline fitting the plurality of positions of the plurality of waypoints; determining a commanded curvature of the follower vehicle based on a curvature of the dynamic path at a current position of the follower vehicle; determining a current along path distance between the lead vehicle and the follower vehicle; determining an along path error; determining a next speed of the follower vehicle based on the along path error and the respective waypoint speed of the respective waypoint that is adjacent to a current position of the follower vehicle; and outputting the commanded curvature and the next speed to a control system of the follower vehicle.

A two-stroke engine (4) has a throttle motor (22) for driving a throttle valve (20), a fuel injection device (430) disposed in an intake system (18) including a crank chamber (420), and a control unit (24) controlling the throttle motor (22) and the fuel injection device. The two-stroke engine (4) is designed to achieve an engine rotation speed of 4,500 rpm to 7,000 rpm when the throttle valve (20) is fully open. The two-stroke engine (4) is operated with the throttle full open by the control unit (24), and a battery (8) is charged with electric power generated by a generator (6) using the two-stroke engine.