AUTONOMOUS VEHICLE CONSTANT SPEED CONTROL SYSTEM

By | October 12, 2018

<p id=”p-0001″ num=”0000″>A hybrid electric vehicle includes an engine, an electric machine, and a battery, coupled to a controller(s) configured to, in response to a virtual-driver signal, predict and maintain a constant-speed from a plurality of candidate speeds, to have a lowest fuel consumption and a minimum number of battery-charge-cycles, for a predicted distance and wheel-torque-power. A predicted engine-power is established from the wheel-torque-power required to maintain the constant-speed, and to power vehicle accessories and battery charging, such that fuel consumption and battery-charge-cycles are minimized over the predicted distance at the constant-speed. The controller(s) are configured to generate the predicted distance, from one or more of position and moving-map sensors, by detecting a current location, and identifying an open-road distance between the current location and at least one detected and/or predetermined way-point. The constant-speed is also determined by evaluating travel-times and battery-charge-discharge cycles for the constant speed over the predicted distance.</p>

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