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US 2014/0277997 A1Published application
Electronic Detection of Engine Malfunction
OwnerMark Shaffer, John Bitnerinventors
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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.
Claims22
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.
1 more element
A method for detecting malfunctioning of an engine of a vehicle, the method comprising:
- 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.
2 more elements
A vehicle comprising:
- 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.
2 more elements
Dependencies are inferred from the claim text.