Optimal selection of blended braking capacity for a hybrid electric vehicle
First Claim
1. Method for operating a hybrid powertrain system including a transmission operative to transfer power between an input member and a torque machine and an output member coupled to a driveline coupled to a wheel including an actuable friction brake, the torque machine operative to react torque transferred from the wheel through the driveline to the output member of the transmission, the torque machine connected to an energy storage device, the method comprising:
- monitoring an operator torque request input to an accelerator pedal;
determining a minimum available power output of the energy storage device;
determining a preferred output torque reacted through the output member to the driveline based upon the minimum available power output of the energy storage device;
determining a regenerative braking torque capacity comprising a torque range between the preferred output torque reacted through the output member to the driveline and the operator torque request input to the accelerator pedal; and
controlling operation of the hybrid powertrain based upon the regenerative braking torque capacity.
17 Assignments
0 Petitions
Accused Products
Abstract
A hybrid powertrain system includes a transmission operative to transfer power between an input member and a torque machine and an output member coupled to a driveline coupled to a wheel including an actuable friction brake. The torque machine is operative to react torque transferred from the wheel through the driveline to the output member of the transmission. The torque machine is connected to an energy storage device. A method for operating a hybrid powertrain system includes monitoring an operator torque request input to an accelerator pedal, determining a minimum available power output of the energy storage device, determining a preferred output torque reacted through the output member to the driveline based upon the minimum available power output of the energy storage device, determining a regenerative braking torque capacity comprising a torque range between the preferred output torque reacted through the output member to the driveline and the operator torque request input to the accelerator pedal, and controlling operation of the hybrid powertrain based upon the regenerative braking torque capacity.
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Citations
19 Claims
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1. Method for operating a hybrid powertrain system including a transmission operative to transfer power between an input member and a torque machine and an output member coupled to a driveline coupled to a wheel including an actuable friction brake, the torque machine operative to react torque transferred from the wheel through the driveline to the output member of the transmission, the torque machine connected to an energy storage device, the method comprising:
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monitoring an operator torque request input to an accelerator pedal; determining a minimum available power output of the energy storage device; determining a preferred output torque reacted through the output member to the driveline based upon the minimum available power output of the energy storage device; determining a regenerative braking torque capacity comprising a torque range between the preferred output torque reacted through the output member to the driveline and the operator torque request input to the accelerator pedal; and controlling operation of the hybrid powertrain based upon the regenerative braking torque capacity. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. Method for operating a hybrid powertrain system including a transmission operative to transfer power between an input member and a plurality of torque machines and an output member coupled to a driveline coupled to a wheel including an actuable friction brake, one of the torque machines operative to react torque transferred from the wheel through the driveline to the output member of the transmission, the torque machines are connected to an energy storage device;
- the method comprising;
monitoring an operator torque request input to an accelerator pedal; determining a minimum available power output of the energy storage device; determining a preferred output torque reacted through the output member to the driveline based upon the minimum available power output of the energy storage device; determining a regenerative braking torque capacity comprising a torque range between the preferred output torque reacted through the output member to the driveline and the operator torque request input to the accelerator pedal, and controlling operation of the hybrid powertrain based upon the regenerative braking torque capacity. - View Dependent Claims (11, 12, 13, 14, 15)
- the method comprising;
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16. Method for operating a hybrid powertrain system including a transmission operative to transfer power between an input member and a plurality of torque machines and an output member coupled to a driveline coupled to a wheel, the transmission operative to transfer power between the input member and the torque machines and the output member in one of a fixed gear and a continuously variable operating range state through selective actuation of torque transfer clutches, the torque machines are connected to an energy storage device, and one of the torque machines operative to react torque transferred from the wheel through the driveline to the output member of the transmission, the method comprising:
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monitoring an operator torque request input to an accelerator pedal; determining a minimum available power output of the energy storage device; determining a preferred output torque reacted through the output member to the driveline based upon the minimum available power output of the energy storage device; determining a regenerative braking torque capacity comprising a torque range between the preferred output torque reacted through the output member to the driveline and the operator torque request input to the accelerator pedal; and controlling operation of the hybrid powertrain based upon the regenerative braking torque capacity. - View Dependent Claims (17, 18, 19)
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Specification