METHOD FOR CONTROLLING REGENERATIVE BRAKING IN A VEHICLE
First Claim
1. Method for controlling braking in a vehicle including a friction braking system and a powertrain system including torque machine operative to react tractive torque input from a wheel of the vehicle, the method comprising:
- monitoring operation of the powertrain system;
determining a driver intended total brake torque;
determining a regenerative braking capacity based upon the operation of the powertrain system;
determining a regenerative braking request based upon a time-rate change in the regenerative braking capacity; and
determining a motor torque command for the torque machine based upon the regenerative braking request.
17 Assignments
0 Petitions
Accused Products
Abstract
A vehicle includes a friction braking system and a powertrain system including a torque machine operative to react tractive torque input from a wheel of the vehicle. A method for controlling braking in a vehicle includes monitoring operation of the powertrain system, determining a driver intended total brake torque, determining a regenerative braking capacity based upon the operation of the powertrain system, determining a regenerative braking request based upon a time-rate change in the regenerative braking capacity, and determining a motor torque command for the torque machine based upon the regenerative braking request.
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Citations
12 Claims
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1. Method for controlling braking in a vehicle including a friction braking system and a powertrain system including torque machine operative to react tractive torque input from a wheel of the vehicle, the method comprising:
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monitoring operation of the powertrain system; determining a driver intended total brake torque; determining a regenerative braking capacity based upon the operation of the powertrain system; determining a regenerative braking request based upon a time-rate change in the regenerative braking capacity; and determining a motor torque command for the torque machine based upon the regenerative braking request. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. Method for controlling braking in a vehicle including a friction braking system and a powertrain system including a plurality of torque machines operative to react tractive torque input from a driveline, the method comprising:
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monitoring operation of the powertrain system; determining a driver intended total brake torque; determining a regenerative braking capacity based upon the operation of the powertrain system; determining a regenerative braking request based upon the regenerative braking capacity modified using a slope regulating function; determining motor torque commands for the first and second torque machines based upon the regenerative braking request, and determining a braking torque command to the friction brakes based upon the driver intended total brake torque and the regenerative braking request. - View Dependent Claims (9, 10, 11)
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12. Method for controlling braking in a vehicle including a friction braking system and a powertrain system including a torque machine operative to react tractive torque input from a driveline, the method comprising:
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determining a regenerative braking capacity based upon the operation of the powertrain system; determining a regenerative braking request based upon the regenerative braking capacity modified using a slope regulating function; determining a motor torque command for the torque machine based upon the regenerative braking request, and determining a braking torque command to the friction brakes based upon the driver intended total brake torque and the regenerative braking request.
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Specification