HRP20100070B1 - Moment generated eccenter wheel drive and his use in electric vehicles - Google Patents

Abstract

The invention relates to wheel drive based on the torque generated by an eccentric and its application to a compact electric vehicle. The eccentric wheel consists of a wheel (11), a hub (13) and spokes (12). The spokes are of variable length and their function is performed by linear electric motors (14), which are connected to the wheel and hub by pivot joints. Each of the linear motors is separately controlled, and their resultant effect is an eccentric removal of the hub center from the center of the circuit. The eccentric gravity vehicle (18) is a two-seater intended primarily for urban transport, and has two eccentric gravity wheels mounted laterally on the body of the vehicle. The wheels are of such a diameter that the center of gravity of the vehicle with the load is located well below the center of the hubs for permanent stability. In the idle state, the vehicle is resting on the ground with the supports (34, 35) resting on the ground. In the running state, the vehicle body moves away from the ground and the dynamic action and control of the engine achieves wheel eccentricity such that the torque on wheels is commensurate with the weight of the vehicle and the horizontal distance of the hub center from the center of the wheel is established. Controlling this offset - eccentricity - separately for each wheel achieves the desired torque, that is, moving the vehicle forward, backward, decelerating, and turning, which is achieved by varying the eccentricity of each wheel. The vehicle is powered by battery (20) located at the bottom of the vehicle body. The desired eccentricity of the wheel is maintained in motion by dynamic steering. The wheels are attached to the body of the vehicle by axle shafts, on which sliding electrical contacts (16) are provided to power and control the spokes-linear motors (14). The vibration damping of the cab, the recovery of mechanical energy with braking and the additional drive to overcome the uphill slope are achieved by activating the recoil-damping assembly (19), which mechanically connects the wheels to the vehicle body. The vehicle is controlled by a computer, logic-control assembly, which registers at any time the extension of each of the linear motors, the rotation of the wheel towards the reference point, and the inclination of the body of the vehicle. From these parameters, the vehicle position, direction and speed are calculated and the eccentricity required, ie the torques on each wheel, determined and maintained. This electric vehicle is of very compact size and large maneuverability, with extremely small turning radius.