Noise detection and noise reduction methods for vehicle fuel cell engine system
An engine system and fuel cell technology, which can be used in sound-generating equipment, measuring devices, measuring ultrasonic/sonic/infrasonic waves, etc., can solve the problems of high acoustic shock noise and single processing method, and achieve the improvement of acoustic shock noise, alleviation of noise pollution, The effect of improving reliability and durability
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[0034] The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present invention.
[0035] Such as Figure 1 to Figure 11 As shown, this embodiment provides a noise detection and noise reduction method for a vehicle fuel cell engine system;
[0036] The noise detection method of the vehicle fuel cell engine system includes identifying the noise source under vehicle-mounted conditions, and specifically includes the following steps:
[0037] S1. Carry out a noise source identification test on the vehicle by the near-field acoustic holography method. After obtaining the A-weighted sound pressure level distribution map of the noise at different positions of the vehicle, perform a preliminary an...
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