Characterizing Engine Load
First Claim
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1. A method comprising:
- obtaining a plurality of engine load values for an engine in a vehicle based on outputs provided by an on board diagnostic (OBD) system of the vehicle, each of the load values being obtained using an algorithm that is different than an algorithm used for obtaining other ones of the load values;
processing the plurality of engine load values by maximizing differences between the engine load values;
identifying an engine load reporting strategy used by the OBD system based on the respective differences; and
generating an output characterizing operation of the engine based on the identified engine load reporting strategy.
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Abstract
Aspects of the disclosure are directed to characterizing engine load for an engine in a vehicle. As may be implemented in accordance with one or more embodiments, an engine reporting strategy utilized by an on board diagnostic (OBD) system of a vehicle is detected based on output parameters of the OBD system and engine load values provided under engine operating conditions that maximize the load values.
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Citations
20 Claims
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1. A method comprising:
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obtaining a plurality of engine load values for an engine in a vehicle based on outputs provided by an on board diagnostic (OBD) system of the vehicle, each of the load values being obtained using an algorithm that is different than an algorithm used for obtaining other ones of the load values; processing the plurality of engine load values by maximizing differences between the engine load values; identifying an engine load reporting strategy used by the OBD system based on the respective differences; and generating an output characterizing operation of the engine based on the identified engine load reporting strategy. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A method comprising:
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determining respective load values for an engine utilizing respective engine load reporting algorithms, based on output parameters obtained from an on board diagnostic (OBD) system of a vehicle in which the engine operates, under operating conditions of the engine that maximize differences between the determined load values; and identifying one of the engine load reporting algorithms as being used by the OBD system based on the differences between the load values.
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Specification