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US 12,767,144 B2Granted
Control of transmission with activated power take-off
AssigneeDana Belgium N.V.
InventorsStijn Goossens, Peter Deckmyn, Nicolas Lenaerts
Life of this patent
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Abstract
A method and system for operating a powertrain that includes a transmission with two power take-off outputs and transmission output shaft is described. In one example, the powertrain is operated in a speed control mode whereby vehicle speed is controlled so that powertrain control may be simplified when a vehicle is moving and a power take-off is supplying power to an external device.
Claims12
A powertrain of a vehicle, comprising:
- a transmission including a power take-off and an output shaft that delivers torque to vehicle wheels, where the power take-off is coupled to the output shaft via a planetary gear set;
- and
- a controller including executable instructions that cause the controller to:
- operate the powertrain in a first speed control mode, where in the first speed control mode, an output shaft rotational speed is controlled via the controller in response to the vehicle traveling with rotating wheels while delivering power to the power take-off;
- and
- operate the power take-off in a second speed control mode while operating the powertrain in the first speed control mode, wherein a first speed controller of the controller controls the output shaft rotational speed in the first speed control mode, and wherein a second speed controller of the controller controls a power take-off rotational speed in the second speed control mode.
3 more elements
A method for operating a powertrain of a vehicle, the vehicle including a transmission, comprising:
- determining that a power take-off is supplying power to a device external to the transmission and that the vehicle is traveling with rotating wheels, and in response, operating the powertrain in a speed control mode where a speed of the vehicle is controlled to a requested vehicle speed via a controller, wherein the speed control mode includes adjusting the speed of the vehicle to the requested vehicle speed while torque supplied via the powertrain is varied, wherein the controller is a proportional, integral, derivative controller;
- supplying torque via the powertrain in response to a difference between the requested vehicle speed and the speed of the vehicle;
- and
- operating the power take-off in a second speed control mode via a second controller.
1 more element
A powertrain for a vehicle, comprising:
- a transmission including a first power take-off port including a power take-off shaft that rotates at a multiple of a rotational rate of a first shaft, the first shaft coupled to a ring gear of first planetary gear set, a second shaft configured to deliver power to vehicle wheels, the second shaft coupled to carrier planetary gears of the first planetary gear set;
- and a second power take-off port, the second power take-off port coupled to a sun gear of the first planetary gear set, the first power take-off port and the second power take-off port not configured to be coupled to the second shaft, except via the first planetary gear set;
- and
- a controller including executable instructions that cause the controller to operate the powertrain in a speed control mode in response to the vehicle traveling with rotating wheels while delivering power to the second power take-off port, where the speed control mode includes controlling vehicle speed via vehicle speed feedback, including controlling the vehicle speed in response to a requested vehicle speed, the requested vehicle speed based on a position of a driver demand pedal.
1 more element
Dependencies are inferred from the claim text.