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535 results about "Cross country" patented technology

Cross country running is a sport in which teams and individuals run a race on open-air courses over natural terrain such as dirt or grass. Sometimes the runners are referred to as harriers (dogs). The course, typically 4–12 kilometres (2.5–7.5 mi) long, may include surfaces of grass, and earth, pass through woodlands and open country, and include hills, flat ground and sometimes gravel road.

Driving torque distribution method and electric vehicle

ActiveCN107264337AStable and reliable off-road conditionsImprove user experienceSpeed controllerElectric devicesTerrainDistribution method
The present invention provides a driving torque distribution method and an electric vehicle, and solves the problem that the electric vehicle cannot rationally distribute the torque of the front axle and the torque of the rear axle according to specific road conditions. The driving torque distribution method comprises: acquiring a selected terrain pattern; obtaining a first output torque corresponding to current first operating parameter information of the electric vehicle in the torque relationship table corresponding to the terrain patterns, wherein the first operating parameter information and output torques stored according to a corresponding relationship are saved in the torque relationship table; comparing the first output torque with a second output torque, to determine a target output torque, wherein the second output torque refers to the maximum output torque of the electric vehicle; and performing distribution processing on the target output torque according to second operating parameter information and a corresponding relationship between the second operating parameter information and torque distribution coefficients, to obtain the torque of the front axle and the torque of the rear axle of the electric vehicle. The torque of the front axle and the torque of the rear axle are reasonably distributed according to the terrain patterns, so that the electric vehicle is more stable and reliable under cross-country road conditions.
Owner:BEIJING ELECTRIC VEHICLE

Road simulation testbed for wheel

The invention relates to the technical field of vehicle experiments, in particular to a road simulation testbed for a wheel.The road simulation testbed comprises a vertical excitation system coaxially connected with a wheel to be tested and a revolving drum system arranged below the wheel to be tested; the revolving drum system comprises a revolving drum and a first drive device for driving the revolving drum to rotate, and the outer cylindrical face of the revolving drum is in rolling contact connection with the outer circumferential face of the wheel to be tested so that the driving state on a road of a vehicle can be stimulated; the vertical excitation system comprises a hanger bracket system, the wheel to be tested is mounted on the hanger bracket system, so that the dynamic load of the wheel to be tested in the driving process of the vehicle in the vertical direction is stimulated by exerting perpendicular drive on the hanger bracket system.The first drive device drives the revolving drum, drive and loading of the torque of the wheel to be tested are achieved, the complex dynamic load of the wheel in the vertical direction is represented through the hanger bracket system, targeted to the characteristic of complex dynamic load of an off-road vehicle, the stress of the wheel passing through complex cross-country road conditions is stimulated, and the straight travel working condition of wheels of the off-road vehicle is effectively stimulated.
Owner:BEIJING INSTITUTE OF TECHNOLOGYGY
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