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US 2024/0190448 A1Published application
System and method for controlling a vehicle
AssigneePolaris Industries Inc.
InventorsTim P. Norstad, Louis J. Brady, Brian R. Gillingham, Stephen L. Nelson, Jason R. Fields
Life of this patent
Estimating the term…
Abstract
A vehicle is provided including an electronic power steering system, an electronic throttle control system, and a stability control system.
Claims19
A recreational vehicle, comprising:
- a plurality of ground engaging members;
- a frame supported by the plurality of ground engaging members;
- a suspension system coupling the plurality of ground engaging members to the frame, the suspension system including at least one adjustable shock absorber having at least one adjustable damping characteristic;
- a first sensor configured to monitor the displacement of the at least one adjustable shock absorber;
- a second sensor configured to monitor the vehicle speed;
- at least one controller operatively coupled to the adjustable shock absorber, the suspension sensor, and the second sensor, the at least one controller configured to:
- determine a terrain type based upon at least one of a displacement rate of the at least one adjustable shock absorber from the first sensor and a vehicle speed from the second sensor;
- in response to determining the terrain type is a first terrain based upon the displacement rate being a first displacement rate and the vehicle speed being a first speed:
- adjust the adjustable damping characteristic for the at least one adjustable shock absorber to have a first stiffness;
- in response to determining the terrain type is a second terrain based upon the displacement rate being a second displacement rate and the vehicle speed being a second speed, the second displacement rate being greater than the first displacement rate and the second speed being less than the first speed:
- adjust the adjustable damping characteristic for the at least one adjustable shock absorber to have a second stiffness less than the first stiffness.
8 more elements
A method of controlling a damping characteristic of at least one adjustable shock absorber of a vehicle being operated by a driver, the method comprising:
- sensing a change in a terrain being traversed by the vehicle;
- and
- adjusting the damping characteristic of the at least one adjustable shock absorber of the vehicle based on the sensed change in the terrain.
A recreational vehicle, comprising:
- a plurality of ground engaging members;
- a frame supported by the plurality of ground engaging members;
- a suspension system coupling the plurality of ground engaging members to the frame, the suspension system including at least one adjustable shock absorber having at least one adjustable damping characteristic, the suspension system further configured to alter a vehicle ride height;
- a first sensor supported by the vehicle, the first sensor configured to monitor the position of the at least one adjustable shock absorber;
- a second sensor configured to monitor the vehicle speed;
- at least one controller operatively coupled to the adjustable shock absorber, the suspension sensor, and the second sensor, the at least one controller configured to:
- determine a terrain type based upon at least one of a displacement rate of the at least one adjustable shock absorber from the first sensor and a vehicle speed from the second sensor;
- in response to determining the terrain type is a first terrain based upon the displacement rate being a first displacement rate and the vehicle speed being a first speed:
- adjust the vehicle ride height to be a first vehicle ride height by adjusting the position of the at least one adjustable shock absorber;
- in response to determining the terrain type is a second terrain based upon the displacement rate being a second displacement rate and the vehicle speed being a second speed, the second displacement rate being less than the first displacement rate and the second speed being greater than the first speed:
- adjust the vehicle ride height to be a second vehicle ride height by adjusting the position of the at least one adjustable shock absorber, the second vehicle ride height being less than the first vehicle ride height.
8 more elements
A method of controlling a recreational vehicle, the method comprising the steps of:
- detecting, by a controller of the recreational vehicle, a characteristic of a suspension
- system of the vehicle during operation of the vehicle, wherein the suspension system comprises
- at least one adjustable shock absorber;
- comparing, by the controller, at least one detected parameter of the vehicle to at least
- one threshold stored in memory accessible by the controller, the
- at least one detected parameter including a rate of change of the characteristic of the suspension system;
- in response to the comparing, identifying, by the controller a terrain characteristic;
- and
- in response to the identifying, adjusting, by the controller, an adjustable damping profile for the at least one adjustable shock absorber and a configuration of a second system operatively coupled to the at least one ground engaging member.
6 more elements
Dependencies are inferred from the claim text.