Back to results
US 11,220,177 B2Granted
Vehicle torque shaping
AssigneeFord Global Technologies, LLC
InventorsMaruthi Thiruninravur Ravichandran, Jeffrey Allen Doering, Rajit Johri, Bhavesh Ravindra Paradkar, Dushyant K. Palejiya, Jason Meyer
Life of this patent
Estimating the term…
Abstract
A vehicle includes an actuator, a drivetrain configured to receive mechanical power from the actuator, an accelerator pedal position sensor configured to output a driver-demanded torque, and a controller in electric communication with the sensor and the actuator. The controller is programmed to receive the driver-demanded torque and output a shaped torque command to mitigate driveline disturbances caused by backlash and shaft compliance.
Claims20
A vehicle comprising:
- an actuator;
- a drivetrain configured to receive mechanical power from the actuator;
- an accelerator pedal position sensor configured to output a driver-demanded torque;
- and
- a controller in electric communication with the sensor and the actuator, the controller programmed to:
- receive the driver-demanded torque, and
- responsive to the driver-demanded torque increasing at a rate exceeding a threshold and the drivetrain being in lash mode, (i) command a first torque to the actuator for a first duration of time, (ii) upon expiration of the first duration, command a second torque to the actuator that is greater than the first torque for a second duration of time, and (iii) upon expiration of the second duration, command a third torque to the actuator that is less than the second torque for a third duration of time, wherein the first, second, and third torques are less than the driver-demanded torque.
4 more elements
A vehicle comprising:
- an actuator;
- a drivetrain configured to receive mechanical power from the actuator;
- an accelerator pedal position sensor configured to output a driver-demanded torque;
- and
- a controller programmed to:
- receive the driver-demanded torque, and
- in response to the drivetrain exiting lash and the driver-demanded torque indicating vehicle acceleration during the exiting of the lash, command a torque to the actuator, for a duration of time, that is greater than the driver-demanded torque to create a temporary torque overshoot, wherein the duration of time and a magnitude of the torque are both based on the driver-demanded torque.
4 more elements
A vehicle comprising:
- an actuator;
- a drivetrain configured to receive mechanical power from the actuator;
- and
- a controller programmed to,
- in response to the drivetrain changing from an offgoing mode to an oncoming mode, and a difference between an initial torque command of the oncoming mode and a last torque command of the offgoing mode being less than a threshold, (i) command the initial torque to the actuator for a first duration of time and (ii) command a second torque to the actuator for a second duration of time that immediately follows the first duration of time, and
- in response to the drivetrain changing from an offgoing mode to an oncoming mode, and a difference between the initial torque command and the last torque command exceeding the threshold, (i) command a clipped torque to the actuator for the first duration of time and (ii) command the second torque to the actuator for the second duration of time that immediately follows the first duration of time.
3 more elements
Dependencies are inferred from the claim text.