Fca US LLC

Christopher E Pueppke

James M Wilder

Jeremy J Anker

Michael J Prucka

Sean R King

Yi Cheng

Anwar Alkeilani

Joseph M Johnson

Ibrahim Alkeilani

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.

Vehicle launch control sequencing

A launch control technique for a vehicle having a torque generating system comprises displaying, via a user interface, information relating to a set of launch torque curves, each launch torque curve defining how the torque generating system is to generate drive torque during a period, receiving, via the user interface, a driver-selection of one of the set of launch torque curves to obtain a driver-selected launch torque curve, detecting a set of launch conditions comprising one or more vehicle operating conditions indicative of a launch of the vehicle, detecting a launch request in response to an accelerator pedal of the vehicle being depressed, and controlling the launch of the vehicle by performing open-loop control of the drive torque generated by the torque generating system according to the driver-selected launch torque curve and irrespective of wheel slip of the vehicle.

Driver-selectable vehicle launch torque curves and open-loop engine torque control

A vehicle launch control technique includes providing a driver interface configured to display information to and input from a driver of the vehicle and a controller in communication with the driver interface, determining a maximum available torque curve for the powertrain based on current conditions, displaying, at the driver interface, the maximum available torque curve, receiving, from the driver via the driver interface, a desired launch speed for the powertrain, receiving, from the driver via the driver interface, a desired torque curve for the powertrain, wherein the desired torque curve changes in response to changes to the desired launch speed, generating, in response to a command via the driver interface, a final desired torque curve for the powertrain, and performing launch control of the vehicle by controlling the powertrain of the vehicle according to the final desired torque curve.

Vehicle launch control driver interface

A control system and method for controlling vehicle launch includes receiving a request to enable a launch control feature of a traction control system of the vehicle, the launch control feature being configured to improve torque transfer from an engine of the vehicle to a driveline of the vehicle; and in response to receiving the enable request for the launch control feature, generating a torque reserve at the engine by (i) increasing airflow into the engine to a level greater than a level for achieving a torque request for the engine and (ii) deactivating a predetermined set of cylinders of the engine by disabling their respective fuel injectors; detecting an intent of the driver to launch the vehicle; and in response to detecting the intent of the driver to launch the vehicle, releasing the torque reserve to increase a torque output of the engine based on the engine torque request.

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Clarkston, MI, United States of America

Christopher E Pueppke