Method for determining state of torsional vibration damper of vehicle
A torsional vibration damper and state technology, applied in the design characteristics of spring/shock absorber, vehicle suspension/shock absorber mechanism test, spring/shock absorber, etc., can solve the problems of engine damage and high cost
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[0021] figure 1 This is a first embodiment of the method according to the invention, in which an insufficient functionality of the torsional vibration damper is detected in conjunction with the acoustic structure-borne sound detection. In this case, an acoustic structure-borne noise image emitted by an engine-mounted structure-borne noise sensor is evaluated, wherein the acoustic amplitude is displayed via a number of different measurements. The standard deviation of the acoustic amplitude is plotted as threshold S with an amplitude of 0.2. Measurement results below this standard deviation mean that the tested component is normal. Components whose acoustic amplitudes exceed threshold value S as standard deviation are highlighted from the sharpness caused by the tolerance. Thus, measuring point A is detected at an acoustic amplitude of approximately 0.46, while at the same time a second measuring point B is detected at an acoustic amplitude of 0.82. Measurement A concerns to...
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