Electronic Detection of Engine Malfunction
First Claim
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1. A diagnostic circuit to detect malfunctioning of an engine of a vehicle, the diagnostic circuit comprising:
- a filter circuit to receive an operation signal from a powertrain sensor of the vehicle and generate a filtered signal;
an alternating current-to-direct current converter to convert the filtered signal to a direct current filter signal; and
a peak detection circuit to detect a signal peak of the direct current filtered signal and generate a trigger signal in response to a determination that the detected signal peak is greater than a reference threshold.
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Abstract
Technologies for detecting malfunctioning of an engine are disclosed. The technologies include filtering an operation signal of the engine, converting the filtered signal to a direct current signal, and determining whether the engine is malfunctioning based on an amplitude of the direct current signal. The operation signal may be filtered using a band-pass filter.
13 Citations
22 Claims
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1. A diagnostic circuit to detect malfunctioning of an engine of a vehicle, the diagnostic circuit comprising:
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a filter circuit to receive an operation signal from a powertrain sensor of the vehicle and generate a filtered signal; an alternating current-to-direct current converter to convert the filtered signal to a direct current filter signal; and a peak detection circuit to detect a signal peak of the direct current filtered signal and generate a trigger signal in response to a determination that the detected signal peak is greater than a reference threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for detecting malfunctioning of an engine of a vehicle, the method comprising:
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receiving, with a diagnostic circuit, an operation signal from an angular velocity sensor of the vehicle; filtering, with a diagnostic circuit, the operation signal to generate a filtered signal; converting, with a diagnostic circuit, the generated filtered signal to a direct current filtered signal; and determining, with a diagnostic circuit, whether a malfunctioning event is occurring in the engine based on a comparison of a signal peak of the direct current filtered signal to a reference threshold. - View Dependent Claims (15, 16, 17, 18, 19)
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20. A vehicle comprising:
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an angular velocity sensor to generate an operation signal indicative of an angular velocity of a flywheel of an engine of the vehicle; and a diagnostic circuit to receive the operation signal, the diagnostic circuit comprising (i) a band-pass filter to filter the operation signal to generate a filtered signal, (ii) an alternating current-to-direct current converter to convert the filtered signal to a direct current filter signal, and (iii) a peak detection circuit to detect a signal peak of the direct current filtered signal and generate a trigger signal in response to a determination that the detected signal peak is greater than a reference threshold; and an alarm circuit to receive the trigger signal and generate an alarm in response to the trigger signal. - View Dependent Claims (21, 22)
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Specification