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US 11,845,310 B2Granted
Systems and methods for tire warmup and vehicle launch optimization
AssigneeFord Global Technologies, LLC
InventorsChristopher Paul Glugla, Gopichandra Surnilla
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for warming vehicle tires prior to a vehicle launch event. In one example, a method may include, in response to an initiation of a burn out event while locking non-driven wheel brakes, adjusting a spinning of driven wheels based on vehicle performance parameters measured during a previous vehicle launch. In this way, a vehicle controller may control the tire warming to increase tire traction while reducing tire wear.
Claims19
A method, comprising:
- while locking non-driven wheel brakes and maintaining a vehicle stationary, receiving a request initiating a burn out event, and delivering an amount of torque to driven wheels to spin the driven wheels of the vehicle for a predetermined duration while preventing the vehicle from launching by maintaining the vehicle stationary and the non-driven wheel brakes locked,
- wherein spinning the driven wheels of the vehicle for the predetermined duration responsive to the request initiating the burn out event includes heating the driven wheels to a desired temperature prior to the launching of the vehicle;
- where parameters for the spinning of the driven wheels during the burn out event, including the predetermined duration for spinning of the driven wheels and the amount of torque delivered to the driven wheels during the burn out event, are parameters that have already been adjusted based on a vehicle performance during a previous vehicle launch;
- wherein the parameters have already been adjusted at least by individually increasing or decreasing a speed of the driven wheels to reach toward equalized tire temperatures and maintain a straight attitude in response to the vehicle performance during the previous vehicle launch;
- and
- after completing the burn out event, carrying out a launch event by releasing the non-driven wheel brakes in response to the predetermioned duration of the spinning elapsing and launching the vehicle.
3 more elements
A method, comprising:
- determining a request for a vehicle launch event, and accelerating a vehicle from rest in response to determining the request for the vehicle launch event;
- measuring launch performance parameters including tire slip during the vehicle launch event of the vehicle via a wheel speed sensor and a radar odometry sensor;
- adjusting burn out parameters for a burn out event that is a next burn out event following the vehicle launch event, where the burn out parameters for the burn out event are adjusted based on the measured launch performance parameters, and where the adjusted burn out parameters include a predetermined duration for the burn out event and an amount of torque to deliver to spin driven wheels of the vehicle for the burn out event;
- wherein the burn out parameters are adjusted at least by individually increasing or decreasing a speed of the driven wheels to reach toward equalized tire temperatures and maintain a straight attitude in response to vehicle performance during the previous vehicle launch event;
- determining a request to initiate the burn out event, and performing the burn out event with the adjusted burn out parameters responsive to determining the request to initiate the burn out event, wherein performing the burn out event includes preventing the vehicle from launching by locking wheel brakes of non-driven wheels, and delivering the amount of torque to spin the driven wheels of the vehicle for the predetermined duration based on the adjusted burn out parameters while the wheel brakes of the non-driven wheels are locked and the vehicle is maintained substantially stationary;
- wherein spinning the driven wheels of the vehicle for the predetermined duration includes heating the driven wheels to a desired teemperature prior to the next vehicle launch event;
- and
- performing a next vehicle launch event of the vehicle responsive to completion of the burn out event.
5 more elements
A system, comprising:
- an engine configured to propel a vehicle via a plurality of wheels, the plurality of wheels including one or more front wheels and one or more rear wheels;
- a braking system, including a brake module coupled to each of the plurality of wheels;
- and
- a controller storing executable instructions in non-transitory memory that, when executed, cause the controller to:
- determine a request for a vehicle launch event, and accelerate the vehicle from rest in response to determining the request for the vehicle launch event;
- then
- operate the braking system in a line-lock mode in response to an input from a vehicle operator, where the line-lock mode includes locking each non-driven wheel of the vehicle using the brake module;
- and
- while operating the braking system in the line-lock mode and maintaining the vehicle stationary with each non-driven wheel locked, determinethat a request for initiating a burn out is received, and deliver an amount of torque to spin the rear wheels at a desired speed while preventing the vehicle from launching by maintaining the vehicle stationary with each non-driven wheel locked until a predetermined threshold duration is reached responsive to determining the request for initiating the burn out is received, each of the amount of torque to deliver the desired speed and the predetermined threshold duration adjusted based on sensor measurements obtained during the vehicle launch event, where the vehicle launch event is a most recent vehicle launch event, and where the adjusting includes adjusting each of the amount of torque delivered to provide the desired speed and the threshold duration based on a tire temperature estimation that is inferred from the sensor measurements;
- wherein spinning the driven wheels of the vehicle until the predetermined threshold duration is reached includes heating the driven wheels to a desired temperature prior to the launching of the vehicle;
- wherein the adjusting includes at least individually increasing or decreasing a speed of the driven wheels to reach toward equalized tire temperatures and maintain a straight attitude in response to vehicle performance during the most recent vehicle launch event;
- and
- after completion of the burn out event, release the brake module coupled to each non-driven wheel of the plurality of wheels in response to the predetermined duration of the spinning elapsing and launching the vehicle in a further vehicle launch event.
10 more elements
Dependencies are inferred from the claim text.