Method and system for a hybrid power control in a vehicle
AssigneeCummins Inc.
InventorsVivek A. Sujan, Jeffrey A. Green, Thomas M. Yonushonis, Timothy J. Proctor, Daniel R. Dempsey, David W. Ochs, Thomas R. Marsh, James R. Nebergall, J. Steven Kolhouse
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Abstract
Methods and systems for improving fuel economy and reducing emissions of a vehicle with an electric motor, an engine, an energy storage device, and a controller are disclosed. The method includes obtaining current state information including a current hybrid control surface, and determining a target hybrid control surface for the vehicle based on the current state information.
Claims20
A method for improving fuel economy and reducing emissions of a vehicle with an electric motor, an engine, and a controller, the method comprising:
- obtaining, by the controller, (1) lookahead information including a predicted temperature of an aftertreatment system operatively coupled to the engine and (2) current state information including a current hybrid control surface;
- and
- determining, by the controller based on the lookahead information and the current state information, a target power demand for the vehicle and a target hybrid control surface for the vehicle,
- wherein the target hybrid control surface includes a first portion of the power demand associated with the engine and a second portion of the power demand associated with the motor, and
- wherein the first portion is greater than 100% of the target power demand, and the second portion is a negative value such that a fraction of the first portion which exceeds 100% of the target power demand is converted into electrical energy via the motor.
A method for improving fuel economy and reducing emissions of a vehicle with an electric motor, an engine, and a controller, the method comprising:
- obtaining, by the controller, current state information;
- learning, by the controller, a history of actions indicative of previous routes taken by an operator of the vehicle;
- and
- determining, by the controller, a target power demand for the vehicle and a target state for the vehicle based on, the history of actions and the current state information,
- wherein the target state includes a first portion of the power demand associated with the engine and a second portion of the power demand associated with the motor, and
- wherein the first portion is greater than 100% of the target power demand, and the second portion is a negative value such that a fraction of the first portion which exceeds 100% of the target power demand is converted into electrical energy via the motor.
A vehicle comprising:
- an electric motor, an engine, and a controller operatively coupled with the electric motor and the engine, the controller configured to:
- obtain (1) lookahead information including a predicted temperature of an aftertreatment system operatively coupled to the engine and (2) current state information including a current hybrid control surface;
- determine, based on the lookahead information and the current state information, a target power demand for the vehicle and a target hybrid control surface for the vehicle,
- wherein the target hybrid control surface includes a first portion of the power demand associated with the engine and a second portion of the power demand associated with the motor, and
- wherein the first portion is greater than 100% of the target power demand, and the second portion is a negative value;
- and
- control, based on the first portion and the second portion that are determined, the motor to convert a fraction of the first portion which exceeds 100% of the target power demand into electrical energy.
Dependencies are inferred from the claim text.