METHOD OF IDENTIFYING A FAULTED COMPONENT IN AN AUTOMOTIVE SYSTEM
1 Assignment
0 Petitions
Accused Products
Abstract
A method of identifying a faulted component in an automotive system including an internal combustion engine managed by an Electronic Control Unit. The internal combustion engine is operated according to a predefined detection routine. A noise signal emitted by the activated internal combustion engine is recorded in a data carrier or memory system. The recorded noise signal is analyzed by a signal treatment algorithm to determine a plurality of vibration modes of the automotive system from the noise signal.; The amplitude of the noise signal is compared at each vibration mode with an acceptable amplitude threshold. A faulted component of the automotive system is determined if the amplitude of the correspondent vibration mode is greater than the acceptable amplitude threshold.
-
Citations
23 Claims
-
1-12. -12. (canceled)
-
13. A method of identifying a faulted component in an automotive system, the automotive system comprising an internal combustion engine managed by an Electronic Control Unit, the method comprising:
-
operating the internal combustion engine according to a predefined detection routine; recording a noise signal emitted by the activated internal combustion engine in a memory system; analyzing the recorded noise signal with a signal treatment algorithm to determine a plurality of vibration modes of the automotive system from the noise signal; comparing the amplitude of the noise signal at each vibration mode with an acceptable amplitude threshold; and identifying a faulted component of the automotive system if the amplitude of the correspondent vibration mode is greater than the acceptable amplitude threshold. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
-
-
21. A method of identifying a faulted component in an automotive system, the automotive system comprising an internal combustion engine managed by an Electronic Control Unit, the method comprising:
-
operating the internal combustion engine according to a predefined detection routine which includes ramping up an engine speed over a predefined range of revolutions per minute for a predefined amount of time; recording a noise signal emitted by the activated internal combustion engine in a memory system with an acoustic sensor; analyzing the recorded noise signal using a Fast Fourier Transformation to convert the noise signal from a time domain to a frequency domain for determining a plurality of vibration modes of the automotive system from the noise signal; comparing the amplitude of the noise signal at each vibration mode with an acceptable amplitude threshold; using a relation of vibration modes to a fault condition of the automotive system for identifying the faulted component; and identifying a faulted component of the automotive system if the amplitude of the relation of vibration mode is greater than the acceptable amplitude threshold.
-
-
22. An apparatus for the identification of a faulted component in an automotive system having an internal combustion engine managed by an Electronic Control Unit, the apparatus including a processor and a non-transitory computer readable medium having a computer code, which when executed on the processor, is configured to:
-
operate the internal combustion engine according to a predefined detection routine; recording a noise signal emitted by the activated internal combustion engine in a memory system; analyze the recorded noise signal according to a signal treatment algorithm to determine a plurality of vibration modes of the automotive system from the noise signal; compare the amplitude of the noise signal at each vibration mode with an acceptable amplitude threshold; and identify a faulted component of the automotive system if the amplitude of the correspondent vibration mode is greater than the acceptable amplitude threshold. - View Dependent Claims (23)
-
Specification