Back to results
US 2022/0009474 A1Published application
Method and system for adjusting a minimum driver demand wheel torque
AssigneeFord Global Technologies, LLC
InventorsYanan Zhao, Jason Meyer, Rajit Johri, Mark Steven Yamazaki, Jeffrey Allen Doering
Life of this patent
Estimating the term…
Abstract
Methods and systems are provided for adjusting driver demand wheel torque of a vehicle. The driver demand wheel torque may be adjusted as a function of a minimum wheel torque. The minimum wheel torque may be determined according to a plurality of torques that may be evaluated in three different phases.
Claims20
A method for operating a vehicle, comprising:
- generating consistent wheel torque during vehicle coasting conditions, vehicle creep condition, and transitions between vehicle coasting conditions and vehicle creep conditions irrespective of which one or more powertrain propulsion sources generates the consistent wheel torque.
A system for operating a powertrain, comprising:
- one or more propulsion sources;
- and
- a controller including executable instructions stored in non-transitory memory that cause the controller to adjust a torque of the propulsion source in response to a minimum wheel torque request, where the minimum wheel torque request is a greater of a vehicle coasting drivability wheel torque, a powertrain capability minimum wheel torque, a smooth transition wheel torque, and a creep wheel torque.
A method for operating a vehicle, comprising:
- adjusting a minimum wheel torque to a creep wheel torque request in a first phase;
- adjusting the minimum wheel torque to a smooth transition wheel torque in a second phase;
- adjusting the minimum wheel torque to a vehicle coasting drivability torque in a third phase;
- and
- adjusting torque of powertrain propulsion sources via a controller in response to the minimum wheel torque.
2 more elements
Dependencies are inferred from the claim text.