CHARACTERISTIC NUMBER METHOD FOR ENGINE REAL-TIME DIAGNOSTICS APPLICATION
First Claim
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1. A method to operate an internal combustion engine equipped with an electronic control unit (ECU) having a memory, sensors in electronic communication with said electronic central unit, said method to provide real-time engine diagnostics to detect engine system hardware malfunctions, said method comprising:
- determining a “
characteristic number”
designed for detecting a certain hardware malfunction from the data signal output of more than two sensors through a mathematical function structure;
CN f(sensor1, sensor2, . . . sensorn)where CN is the characteristic number, andsensor1, sensor2, . . . sensorn provide a sensed effort to track possible hardware malfunctions;
comparing the CN to the stored threshold value when the said hardware function normal to calculate a sensed effect indicative of possible hardware malfunction.
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Abstract
A method of internal combustion engine operation that include real time engine diagnostics to detect hardware malfunctions that combines the signals for two or more sensors to detect the severity of a hardware malfunction.
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Citations
4 Claims
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1. A method to operate an internal combustion engine equipped with an electronic control unit (ECU) having a memory, sensors in electronic communication with said electronic central unit, said method to provide real-time engine diagnostics to detect engine system hardware malfunctions, said method comprising:
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determining a “
characteristic number”
designed for detecting a certain hardware malfunction from the data signal output of more than two sensors through a mathematical function structure;
CN f(sensor1, sensor2, . . . sensorn)where CN is the characteristic number, and sensor1, sensor2, . . . sensorn provide a sensed effort to track possible hardware malfunctions; comparing the CN to the stored threshold value when the said hardware function normal to calculate a sensed effect indicative of possible hardware malfunction. - View Dependent Claims (2, 3, 4)
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Specification