Vehicle launch control sequencing
A vehicle launch control technique includes obtaining a desired launch torque curve and a desired launch speed, performing a pre-staging procedure including generating a torque reserve for a powertrain, in response to paddle shifters being a first configuration and accelerator and brake pedals being fully depressed and then controlling vehicle positioning/movement in response to driver manipulation of the brake pedal, performing a staging procedure including (a) increasing the torque reserve, (b) activating a trans brake feature to hold the vehicle stationary, and (c) increasing a speed of the powertrain to the desired launch speed, in response to (i) the paddle shifters in a different second configuration and (ii) fully releasing the brake pedal, and after the staging procedure and in response to the paddle shifters being in a different third configuration, executing a vehicle launch procedure by depleting the torque reserve according to the desired launch torque curve.
1. A launch control system for a vehicle having a powertrain, the launch control system comprising:
a driver interface configured to display information to and receive input from a driver of the vehicle, the driver interface comprising a brake pedal, an accelerator pedal, and two paddle shifters; and
a controller in communication with the driver interface and configured to:
obtain a desired launch torque curve and a desired launch speed;
perform a pre-staging procedure including generating a torque reserve for the powertrain, in response to (i) the brake pedal being fully engaged, (ii) the paddle shifters being a first configuration, and (iii) the accelerator pedal being at wide-open throttle (WOT), wherein the pre-staging procedure is performed by the vehicle in a pit area of a drag race facility in preparation for a drag race;
after the pre-staging procedure is complete, control vehicle positioning/movement in response to driver manipulation of the brake pedal;
perform a staging procedure including (a) increasing the torque reserve, (b) activating a trans brake feature to hold the vehicle stationary, and (c) increasing a speed of the powertrain to the desired launch speed, in response to (i) the paddle shifters in a different second configuration and (ii) fully releasing the brake pedal; and
after the staging procedure and in response to the paddle shifters being in a different third configuration, executing a vehicle launch procedure by depleting the torque reserve according to the desired launch torque curve.
2. The launch control system of claim 1 , wherein the first configuration for the paddle shifters is both paddle shifters being fully engaged/depressed.
3. The launch control system of claim 2 , wherein the second configuration for the paddle shifters is one of the two paddle shifters being released and the other of the two paddle shifters remaining fully engaged/depressed.
4. The launch control system of claim 3 , wherein the third configuration for the paddle shifters is the other of the two paddle shifters being released such that both paddle shifters are released.
5. The launch control system of claim 1 , wherein the driver controls movement/position of the vehicle after the pre-staging procedure to move/reposition the vehicle from the pit area to a start line for the drag race.
6. The launch control system of claim 1 , wherein the controller executes the vehicle launch procedure while the accelerator pedal remains at WOT and without accelerator pedal modulation by the driver.
7. The launch control system of claim 1 , wherein the driver interface further comprises a touch display, and wherein the controller is configured to obtain the desired launch torque curve and the desired launch speed as input from the driver via the touch display of the driver interface.
8. A launch control method for a vehicle having a powertrain, the launch control method comprising:
providing a driver interface configured to display information to and receive input from a driver of the vehicle, the driver interface comprising a brake pedal, an accelerator pedal, and two paddle shifters, and a controller in communication with the driver interface;
obtaining, by the controller, a desired launch torque curve and a desired launch speed;
performing, by the controller, a pre-staging procedure including generating a torque reserve for the powertrain, in response to (i) the brake pedal being fully engaged, (ii) the paddle shifters being a first configuration, and (iii) the accelerator pedal being at wide-open throttle (WOT), wherein the pre-staging procedure is performed in a pit area of a drag race facility in preparation for a drag race;
after the pre-staging procedure is complete, controlling, by the controller, vehicle positioning/movement in response to driver manipulation of the brake pedal;
performing, by the controller, a staging procedure including (a) increasing the torque reserve, (b) activating a trans brake feature to hold the vehicle stationary, and (c) increasing a speed of the powertrain to the desired launch speed, in response to (i) the paddle shifters in a different second configuration and (ii) fully releasing the brake pedal; and
after the staging procedure and in response to the paddle shifters being in a different third configuration, executing, by the controller, a vehicle launch procedure by depleting the torque reserve according to the desired launch torque curve.
9. The launch control method of claim 8 , wherein the first configuration for the paddle shifters is both paddle shifters being fully engaged/depressed.
10. The launch control method of claim 9 , wherein the second configuration for the paddle shifters is one of the two paddle shifters being released and the other of the two paddle shifters remaining fully engaged/depressed.
11. The launch control method of claim 10 , wherein the third configuration for the paddle shifters is the other of the two paddle shifters being released such that both paddle shifters are released.
12. The launch control method of claim 8 , wherein the driver controls movement/position of the vehicle after the pre-staging procedure to move/reposition the vehicle from the pit area to a start line for the drag race.
13. The launch control method of claim 8 , wherein the controller executes the vehicle launch procedure while the accelerator pedal remains at WOT and without accelerator pedal modulation by the driver.
14. The launch control method of claim 8 , wherein the driver interface further comprises a touch display, and wherein obtaining the desired launch torque curve and the desired launch speed comprises receiving, as input from the driver via the touch display of the driver interface, the desired launch torque curve and the desired launch speed.