Hybrid vehicle and a method of control for improved power management
First Claim
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1. A method of controlling operation of a hybrid vehicle having an engine and a secondary power source, the method comprising:
- determining an engine torque command based on a request for vehicle acceleration or deceleration, a target power level of the secondary power source, and a current engine power command;
determining an engine speed command based on the target power level of the secondary power source, a total engine power command, and vehicle speed; and
operating the engine based on the engine torque and engine speed commands.
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Abstract
A hybrid vehicle and method of control. The method includes determining an engine torque command based on a request for vehicle acceleration or deceleration, a target power level of the secondary power source, and a current engine power command, determining an engine speed command based on the target power level of the secondary power source, a total engine power command, and vehicle speed, and operating the engine based on the engine torque and engine speed commands.
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Citations
20 Claims
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1. A method of controlling operation of a hybrid vehicle having an engine and a secondary power source, the method comprising:
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determining an engine torque command based on a request for vehicle acceleration or deceleration, a target power level of the secondary power source, and a current engine power command; determining an engine speed command based on the target power level of the secondary power source, a total engine power command, and vehicle speed; and operating the engine based on the engine torque and engine speed commands. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A method of controlling operation of a hybrid vehicle having an engine and a secondary power source, the method comprising:
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determining a target power level of the secondary power source and a target engine torque command based on a request for vehicle acceleration or deceleration; determining a total engine power command based on the request for vehicle acceleration or deceleration and the target power level of the secondary power source; determining a total amount of power desired from the secondary power source based on the target power level of the secondary power source and the difference between the total engine power command and a current engine power command; determining whether the total amount of power desired from the secondary power source is within operational limits; determining an engine torque command by adjusting the target engine torque command when the total amount of power desired from the secondary power source is not within operational limits; determining an engine speed command; and executing the engine torque and engine speed commands to control operation of the engine. - View Dependent Claims (8, 9, 10, 11, 12, 13)
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14. A hybrid vehicle, comprising:
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an electrical machine; primary and secondary power sources capable of supplying power to the electrical machine; and a control system including at least one controller configured to; determine a target power level of the secondary power source, a target torque command for the primary power source, and a total power command for the primary power source based at least on part on a driver input; determine a total amount of power desired from the secondary power source based on the target power level of the secondary power source, the total power command for the primary power source, and a current power command for the primary power source; adjust the target torque command for the primary power source when the total amount of power desired from the secondary power source is not within operational limits of the secondary power source; and apply the target torque command to control the torque provided by the primary power source. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification