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US 11,236,825 B1Granted
Operating continuously variable transmission at discrete ratios
AssigneeFord Global Technologies, LLC
InventorsCraig Lechlitner, Seth Anthony Bryan, Tyler James-Ray Kaldobsky
Life of this patent
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Abstract
A vehicle includes an engine, a continuously variable transmission, and a controller. The controller, responsive to a request to manually shift the continuously variable transmission and the engine being on, operates the continuously variable transmission atone of a predetermined number of discrete ratios such that a speed of the engine changes by at least a predetermined amount.
Claims20
A vehicle comprising:
- an engine;
- a continuously variable transmission;
- and
- a controller programmed to, responsive to a request to manually upshift the continuously variable transmission and the engine being on, operate the continuously variable transmission at one of a predetermined number of discrete ratios of engine speed to vehicle speed such that the engine speed decreases by at least a predetermined amount and the one of the predetermined number of discrete ratios is a highest of the predetermined number of discrete ratios that permits the engine speed to decrease by at least the predetermined amount.
1 more element
A method of controlling a vehicle comprising:
- responsive to a request to manually shift a continuously variable transmission of the vehicle and an engine of the vehicle being on, operating the continuously variable transmission at one of a predetermined number of discrete ratios of engine speed to vehicle speed such that the engine speed changes by at least a predetermined amount.
A vehicle comprising:
- an engine;
- a continuously variable transmission;
- and
- a controller programmed to, responsive to a request to manually shift the continuously variable transmission and the engine being on, operate the continuously variable transmission at one of a predetermined number of discrete ratios of engine speed to vehicle speed such that the engine speed changes by at least a predetermined amount.
1 more element
Dependencies are inferred from the claim text.