Method and apparatus for managing torque inputs to an electro-mechanical transmission
First Claim
Patent Images
1. A method to operate a powertrain, the powertrain comprising an internal combustion engine and an electric machine mechanically-operatively coupled to an electro-mechanical transmission to transmit mechanical power to a driveline and the electric machine electrically-operatively coupled to an energy storage system for electric power flow therebetween, the operation of which is controlled by a control module, the method comprising:
- utilizing the control module for determining occurrence of a pre-defined trip;
utilizing the control module for monitoring an operator torque request, an operator braking request, and a state of charge of the energy storage system;
utilizing the control module for determining a projected gain in the state of charge of the energy storage system as a result of regenerative braking for a braking event occurring during the pre-defined trip;
utilizing the control module for determining a requested torque output from the electric machine based upon the projected gain in the state of charge of the energy storage system as a result of regenerative braking for the braking event; and
utilizing the control module for controlling torque outputs from the electric machine and the engine based upon the requested torque output from the electric machine and the operator torque request.
12 Assignments
0 Petitions
Accused Products
Abstract
A hybrid-electric vehicle powertrain control is trained to predefined trips, enabling efficient use of torque events during such trips.
18 Citations
20 Claims
-
1. A method to operate a powertrain, the powertrain comprising an internal combustion engine and an electric machine mechanically-operatively coupled to an electro-mechanical transmission to transmit mechanical power to a driveline and the electric machine electrically-operatively coupled to an energy storage system for electric power flow therebetween, the operation of which is controlled by a control module, the method comprising:
-
utilizing the control module for determining occurrence of a pre-defined trip; utilizing the control module for monitoring an operator torque request, an operator braking request, and a state of charge of the energy storage system; utilizing the control module for determining a projected gain in the state of charge of the energy storage system as a result of regenerative braking for a braking event occurring during the pre-defined trip; utilizing the control module for determining a requested torque output from the electric machine based upon the projected gain in the state of charge of the energy storage system as a result of regenerative braking for the braking event; and utilizing the control module for controlling torque outputs from the electric machine and the engine based upon the requested torque output from the electric machine and the operator torque request. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A method to control electric power flow in a powertrain comprising an internal combustion engine and an electric machine mechanically-operatively coupled to an electro-mechanical transmission operative to transmit mechanical power flow to a driveline, the electric machine electrically-operatively coupled to an energy storage system for electric power flow therebetween, the operation of which is controlled by a control module;
- the method comprising;
utilizing the control module for determining occurrence of a pre-defined trip; utilizing the control module for monitoring an operator torque request, an operator braking request, and a state of charge of the energy storage system; utilizing the control module for determining a projected gain in the state of charge of the energy storage system as a result of regenerative braking for a subsequent braking event occurring during the pre-defined trip; and utilizing the control module for determining a requested torque output from the electric machine based upon the projected gain in the state of charge of the energy storage system as a result of regenerative braking for the subsequent braking event and controlling torque output from the electric machine prior to the subsequent braking event based upon the requested torque output. - View Dependent Claims (11, 12, 13, 14)
- the method comprising;
-
15. A method for managing torque to an electro-mechanical transmission from an electric machine mechanically-operatively coupled thereto to transmit mechanical power to a driveline, the electric machine electrically-operatively coupled to an energy storage system for electric power flow therebetween, the operation of which is controlled by a control module, the method comprising:
-
utilizing the control module for determining occurrence of a pre-defined trip, the pre-defined trip comprising a total distance traveled, and a plurality of projected braking events; utilizing the control module for monitoring an operator braking request, and a state of charge of the energy storage system; utilizing the control module for determining a projected gain in the state of charge of the energy storage system as a result of regenerative braking for a subsequently occurring braking event; and utilizing the control module for determining a requested torque output from the electric machine based upon the projected gain in the state of charge of the energy storage system as a result of regenerative braking for the subsequently occurring braking event and controlling torque output from the electric machine to the electro-mechanical transmission based upon the requested torque output. - View Dependent Claims (16, 17, 18, 19, 20)
-
Specification