Hybrid controls architecture
First Claim
1. A method of controlling a hybrid electric vehicle powertrain, the method comprising:
- iteratively determining an engine output target and a battery output target with one or more electronic controllers the act of iteratively determining comprising operating the one or more controllers to determine;
a total output demanded of the powertrain based at least in part upon an operator input,a first battery output target based upon a battery state of charge, independent of the operator input,a first engine output target based upon the total output demanded and the first battery output target,a second engine output target based upon the first engine output target and an engine constraint,a second battery output target based upon the total output demanded and the second engine output target, anda third battery output target based upon the second battery output target and a battery or motor/generator constraint; and
operating the one or more electronic controllers to control an internal combustion engine using an engine control command constrained by the iterative determination of the first engine output target and the second engine output target and to control a motor/generator of the powertrain using a motor/generator command constrained by the iterative determination of the first battery output target, the second battery output target[s], and the third battery output target, and being effective to extend life of the battery.
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Accused Products
Abstract
Apparatuses, methods and systems for hybrid powertrain control are disclosed. Certain example embodiments control an internal combustion engine and a motor/generator of a hybrid electric powertrain. Example controls may determine a total output demanded of a powertrain based at least in part upon an operator input, a battery output target based upon a battery state of charge and independent of the operator input, and an engine output target based upon the total output demanded and the battery output target. Such example controls may further determine a constrained engine output target, a modified battery output target based upon the total output demanded and the constrained engine output target, and a constrained battery output target based upon the modified battery output target and a battery constraint. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and figures.
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Citations
32 Claims
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1. A method of controlling a hybrid electric vehicle powertrain, the method comprising:
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iteratively determining an engine output target and a battery output target with one or more electronic controllers the act of iteratively determining comprising operating the one or more controllers to determine; a total output demanded of the powertrain based at least in part upon an operator input, a first battery output target based upon a battery state of charge, independent of the operator input, a first engine output target based upon the total output demanded and the first battery output target, a second engine output target based upon the first engine output target and an engine constraint, a second battery output target based upon the total output demanded and the second engine output target, and a third battery output target based upon the second battery output target and a battery or motor/generator constraint; and operating the one or more electronic controllers to control an internal combustion engine using an engine control command constrained by the iterative determination of the first engine output target and the second engine output target and to control a motor/generator of the powertrain using a motor/generator command constrained by the iterative determination of the first battery output target, the second battery output target[s], and the third battery output target, and being effective to extend life of the battery. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A system for controlling a hybrid electric vehicle powertrain, the system comprising:
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one or more electronic control units configured to perform repeated calculations of a desired engine output and a desired battery output, the repeated calculations comprising; a total operational demand of the powertrain based at least in part upon a vehicle control device input, a first desired battery output based upon a battery state of charge and independent of the vehicle control device input, a first desired engine output based upon the total operational demand and the desired battery output, a second desired engine output based upon the desired engine output and an engine constraint, a second desired battery output based upon the total operational demand and the second desired engine output, and a third desired battery output based upon the second desired battery output and a battery or motor/generator constraint; wherein the one or more electronic controllers are configured to control an internal combustion engine using an engine control command determined based upon the repeated calculation of the first desired engine output and the second desired engine output and to control a motor/generator using a motor/generator command determined based upon the repeated calculation of the first desired battery output, the second desired battery output, and the third desired battery output; wherein the one or more electronic control units are further configured to perform calculations of; a third desired engine output based upon the total operational demand and the third desired battery output, a fourth desired engine output based upon the third desired engine output and a second engine constraint, a fourth desired battery output based upon the total operational demand and the fourth desired engine output, and a fifth desired battery output based upon the fourth desired battery output and a second battery or motor/generator constraint, a fifth desired engine output based upon the total operational demand and the fifth desired battery output, and a sixth desired engine output based upon the fifth desired engine output and a third engine constraint; wherein the engine control command is determined based upon the repeated calculation of the first, second, third, fourth, fifth and sixth desired engine outputs and the motor/generator command is determined based upon the repeated calculation of the first, second, third, fourth and fifth desired battery outputs. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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operating an electronic control system to perform the operations of; determining a total output demanded of a hybrid electric powertrain including an engine, a battery, and a motor/generator, determining a battery output target based upon a battery state of charge and independent of the total output demanded input, determining an engine output target based upon the total output demanded and the battery output target, providing a motor/generator command determined by a sequence of multiple constraints and recalculations of the battery output target effective to extend life of the battery, and an engine command determined by a sequence of multiple constraints and recalculations of the engine output target; controlling operation of a motor/generator of the powertrain based upon the battery command; and controlling operation of an engine of the powertrain based upon the engine command. - View Dependent Claims (21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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Specification