Electric Rivilution
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- First Name
- Bill
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- Mar 5, 2019
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- Scottsdale
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- 2016 Model X P90D
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https://www.motorauthority.com/news...xplores-2-speed-transmission-for-off-road-evs
In the patent application in question, which was published by the United States Patent and Trademark Office (USPTO) on Feb. 13 (but filed on May 12, 2021), Rivian proposes adding a software mode for free-wheel towing to its electric pickup trucks and SUVs, alongside the various drive modes and other software-enabled features already available.
Free-wheel towing mode would disconnect the motor or motors that normally power the rear wheels, but keep the front-axle motor or motors engaged. Torque would still be applied to the front wheels to keep the vehicle from rolling out of sync with the tow vehicle. Software would use a vehicle's existing sensors to measure wheel speed and gradient, applying torque when necessary and cutting it off at a predetermined threshold.
In the patent application in question, which was published by the United States Patent and Trademark Office (USPTO) on Feb. 13 (but filed on May 12, 2021), Rivian proposes adding a software mode for free-wheel towing to its electric pickup trucks and SUVs, alongside the various drive modes and other software-enabled features already available.
Free-wheel towing mode would disconnect the motor or motors that normally power the rear wheels, but keep the front-axle motor or motors engaged. Torque would still be applied to the front wheels to keep the vehicle from rolling out of sync with the tow vehicle. Software would use a vehicle's existing sensors to measure wheel speed and gradient, applying torque when necessary and cutting it off at a predetermined threshold.
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