Shift control
AssigneeTEAM Industries, Inc.
InventorsJeffrey Joseph Haack, Thomas Richard Rosenbush, Brandon P. Lenk
Life of this patent
Estimating the term…
Abstract
A shift control is provided. The shift control includes an operator input, a memory and a controller. The memory is used to store a plurality of shifting maps. Each shifting map is associated with a select input signal received from the operator input. At least some of the shifting maps include launch aggressiveness parameters based on anticipated vehicle use. The controller is in communication with the operator input and the memory. The controller is configured to control shifting of a transmission based at least in part on a shifting map stored in the memory associated with an input signal received from the operator input.
Claims19
A shift control comprising:
- an operator input configured to allow the operator to select a desired operating performance of a transmission;
- a memory to store a plurality of shifting maps, each shifting map associated with a select input signal from the operator input, at least some of the shifting maps including launch aggressiveness parameters based on anticipated vehicle use;
- and
- a controller in communication with the operator input and the memory, the controller configured to control shifting of the transmission based at least in part on a shifting map of the plurality of shift maps stored in the memory that is associated with a received input signal from the operator input, wherein the controller is further configured to implement slipper function instructions stored in the memory during a downshift, the slipper function instructions controlling clutch pressure during the downshift to limit effects of engine braking.
A recreation vehicle comprising:
- an engine;
- a transmission in rotational communication with the engine;
- a clutch in operational communication with the transmission to selectively disengage the rotational communication between the engine and the transmission during a shift in gearing of the transmission;
- a clutch actuator coupled to activate the clutch;
- a drivetrain in operational communication with an output of the transmission to move the vehicle;
- a brake system in operational communication with the drivetrain to resist movement of the vehicle;
- an operator input configured to generate operator input signals that allow the operator to select a desired operating performance of a transmission, at least some of the operator input signals based on select operation modes of the vehicle;
- a memory to store a plurality of shifting maps, each shifting map associated with a select operator input signal from the operator input;
- and
- a controller in communication with the operator input and the memory, the controller further configured to control activation of the clutch actuator and shifting of the transmission based at least in part on a selected shifting map of the plurality of shifting maps stored in the memory that is associated with a received operator input signal from the operator input, the controller is further configured to implement slipper function instructions stored in the memory during a downshift, the slipper function controlling clutch pressure during the downshift to limit effects of engine braking.
A method of controlling a shifting of a vehicle, the method comprising:
- receiving an operator input signal regarding a desired operating performance of a transmission;
- retrieving a shift map from memory associated with the operator input signal, the shift map including slipper function instructions to implement during a downshift, the slipper function controlling clutch pressure during the downshift to limit effects of engine braking;
- and
- controlling shifting of the transmission based on the shift map.
Dependencies are inferred from the claim text.