Clutch control for shared power dissipation
AssigneeCNH Industrial America LLC
InventorsGarth Harvey Bulgrien, Alek Nicholas Czernobil
Life of this patent
Estimating the term…
Abstract
A method of controlling an input clutch and an output clutch, wherein the input clutch couples to a power source, the output clutch couples to a load, and the input clutch couples to the output clutch via gears, includes controlling torque of the input clutch based on a torque of the output clutch or a lookup table that controls the torque of the output clutch. The method also includes adjusting the torque of the input clutch based on a slip speed of the input clutch and a slip speed of the output clutch.
Claims14
A method of controlling an input clutch and an output clutch, wherein the input clutch is configured to couple to a power source, the output clutch is configured to couple to a load, and the input clutch is coupled to the output clutch via gears, the method comprising:
- controlling torque of the input clutch based at least in part on a torque of the output clutch or a lookup table configured to control the torque of the output clutch;
- and
- adjusting the torque of the input clutch based at least in part on a slip speed of the input clutch, a slip speed of the output clutch, and a gear ratio of the gears between the input clutch and the output clutch, wherein adjusting the torque of the input clutch comprises increasing the torque of the input clutch to decrease the slip speed of the input clutch to equal the gear ratio of the gears between the input clutch and the output clutch multiplied by the slip speed of the output clutch.
A system of a work vehicle, comprising:
- a transmission comprising an input clutch and an output clutch, wherein the input clutch is configured to couple to a power source, the output clutch is configured to couple to a load, and the input clutch is coupled to the output clutch;
- a controller communicatively coupled to the input clutch and to the output clutch, wherein the controller is configured to:
- control torque of the input clutch based at least in part on a torque of the output clutch or a lookup table configured to control the torque of the output clutch;
- and
- adjust the torque of the input clutch based at least in part on a slip speed of the input clutch, a slip speed of the output clutch, and a gear ratio of the gears between the input clutch and the output clutch, wherein adjusting the torque of the input clutch comprises increasing the torque of the input clutch to decrease the slip speed of the input clutch to equal the gear ratio of the gears between the input clutch and the output clutch multiplied by the slip speed of the output clutch.
A tangible, non-transitory, machine-readable medium, comprising machine-readable instructions to:
- control torque of an input clutch based at least in part on a torque of an output clutch or a lookup table configured to control the torque of the output clutch, wherein the input clutch is configured to couple to a power source, the output clutch is configured to couple to a load, and the input clutch is coupled to the output clutch;
- and
- adjust the torque of the input clutch based at least in part on a slip speed of the input clutch, a slip speed of the output clutch, and a gear ratio of the gears between the input clutch and the output clutch, wherein adjusting the torque of the input clutch comprises decreasing the torque of the input clutch to increase the slip speed of the input clutch to equal the gear ratio of the gears between the input clutch and the output clutch multiplied by the slip speed of the output clutch.
Dependencies are inferred from the claim text.