A rapid diagnosis device for abnormal sound of automobile machinery

Abstract

The purpose of the present invention is to solve the existing problem that it is not easy to quickly and intuitively diagnose the abnormal noise of automobile machinery, and discloses a rapid diagnosis device for abnormal noise of automobile machinery, which includes a sounding cover, a first sound guide tube, a support box, and a casing. , Second sound guide tube, suction cup, splint, adsorption plate, telescopic tube, connecting plate, coil spring, rotating block, rotating shaft, pipe hole and sound insulation layer. The invention can use the first sound guide tube and the second sound guide tube to guide the sound of the chassis of the car, which can allow the driver to listen to the abnormal sound of the car's machinery in the car, which is convenient for rapid diagnosis of the failure of the car, and has a reasonable design and convenient installation. meet social needs.

Description

technical field [0001] The invention relates to the field of abnormal sound detection of automobile machinery, in particular to a rapid diagnosis device for abnormal sound of automobile machinery. Background technique [0002] Abnormal noises include "tempering", "blasting", "surge", "knocking" and mechanical abnormal noises. "Backfire" is the phenomenon that the combustion flame is ejected from the intake pipe in the opposite direction of the intake air and makes a sound, and the cause of "backfire" may be that the main fuel injector and the cold start fuel injector are blocked and stuck, resulting in mixing The air is too lean, the ignition is too late or confused, the intake valve is not sealed, the intake manifold leaks, the oil pressure is too low or the pulsation is large. "Blowout" is a phenomenon that the incompletely burned mixture burns in the exhaust pipe and makes a sound. The reason for "blowout" may be that the ignition timing is inaccurate or disordered, the ...

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Problems solved by technology

[0003] There are many components connected to the chassis, such as the transmission system, which will also produce mechanical abnormal noises. However, during driving, it is difficult to quickly detect mechanical abnormal noises, and the influence of external noise is also difficult for the driver to hear. When there is mechanical abnormal sound, the car cannot be repaired and diagnosed in time, which is prone to danger. Moreover, when the existing mechanical abnormal sound is detected, it is generally detected when the car is stopped, not when the car is running. detection, therefore, it is necessary to design a rapid diagnostic device for abnormal noise of automobile machinery to solve the deficiencies of the prior art

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