ADAPTIVE BRAKE MODE SELECTION
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United States of America Patent
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Issued Date -
Sep 19, 2024
app pub date -
May 29, 2024
filing date -
Jan 27, 2020
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Methods, systems, and devices related to a method of controlling an autonomous diesel-engine vehicle. In one example aspect, the method includes determining longitudinal dynamic response properties of the autonomous vehicle. A brake mode is selected for reducing a current speed of the autonomous vehicle to a lower speed, based on a threshold that is determined using the longitudinal dynamic response properties of the vehicle. When a rate of speed reduction is equal to or smaller than the threshold, the brake mode includes only an engine brake in which engine exhaust valve opening is adjusted for reducing the current speed. When the rate of speed reduction is greater than the threshold, the brake mode incudes a combination of the engine brake and the foundation brake.
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