Hybrid powertrain diagnostics
First Claim
1. A method comprising:
- operating a hybrid powertrain system including an engine and a motor/generator;
determining a first net torque of the engine based upon a model;
sensing an electrical characteristic of the motor/generator;
determining a second net torque of the engine based upon the electrical characteristic of the motor/generator; and
diagnosing the system based upon the first net torque and the second net torque;
wherein the determining the first net torque and the determining the second net torque utilize at least in part different sources of information.
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Accused Products
Abstract
Some exemplary embodiments include methods of operating a hybrid powertrain system including an engine and a motor/generator. One exemplary method includes sensing a characteristic of the motor/generator, determining a first net torque of the engine based upon a model, determining a second net torque of the engine based upon the characteristic of the motor/generator, and diagnosing the system based upon the first net torque and the second net torque. Further exemplary embodiments include hybrid powertrain methods, hybrid powertrain systems, and articles of manufacture configured to store computer executable instructions for hybrid powertrains. Further embodiments, forms, objects, features, advantages, aspects, and benefits shall become apparent from the following description and drawings.
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Citations
28 Claims
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1. A method comprising:
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operating a hybrid powertrain system including an engine and a motor/generator; determining a first net torque of the engine based upon a model; sensing an electrical characteristic of the motor/generator; determining a second net torque of the engine based upon the electrical characteristic of the motor/generator; and diagnosing the system based upon the first net torque and the second net torque; wherein the determining the first net torque and the determining the second net torque utilize at least in part different sources of information. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method comprising:
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operating a hybrid powertrain system including an engine and a motor/generator; determining a first net torque of the engine based upon a model; sensing an acceleration characteristic of the motor/generator; determining a second net torque of the engine based upon the acceleration characteristic of the motor/generator; and diagnosing the system based upon the first net torque and the second net torque; wherein the determining the second net torque of the engine utilizes information from a sensor and the sensor is not utilized in the determining the first net torque of the engine. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A method comprising:
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operating a hybrid powertrain system including an engine and a motor/generator including using the motor/generator to smooth torque pulses of the engine; determining a first net torque of the engine based upon a model; sensing a characteristic of the motor/generator; determining a second net torque of the engine based upon the characteristic of the motor/generator; sensing a vibration characteristic of the system; and diagnosing the system based upon the second net torque, the first net torque and the vibration characteristic; wherein the determining the first net torque is based at least in part upon information from a source which is not utilized in the determining the second net torque. - View Dependent Claims (15, 16, 17)
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18. A hybrid powertrain system comprising:
- an engine;
a motor/generator; and
a controller;
wherein the controller is configured to receive first information of the operating condition of the engine and second information of an electrical characteristic of the motor/generator, the first information being from a different source than the second information, and is operable to process the first information to determine a first net torque of the engine based upon on a model, process the second information to determine a second net torque of the engine, and diagnose an error of the system based upon the first net torque and the second net torque. - View Dependent Claims (19, 20, 21, 22, 23)
- an engine;
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24. An article of manufacture comprising:
- a non-transitory computer readable medium configured to store computer executable instructions to receive information from a hybrid powertrain system including an engine and a motor/generator, determine a first net torque of the engine based upon a model, determine a second net torque of the engine based upon information of an electrical characteristic of the motor/generator, and diagnose an error condition of the system based upon the first net torque and the second net torque;
wherein the model utilizes information from a source different than the information of the electrical characteristic of the motor generator. - View Dependent Claims (25, 26, 27, 28)
- a non-transitory computer readable medium configured to store computer executable instructions to receive information from a hybrid powertrain system including an engine and a motor/generator, determine a first net torque of the engine based upon a model, determine a second net torque of the engine based upon information of an electrical characteristic of the motor/generator, and diagnose an error condition of the system based upon the first net torque and the second net torque;
Specification