Comprehensive test cooling system for vehicle sound attenuation

Abstract

The invention provides a comprehensive test cooling system for vehicle noise elimination. The overheating signal receiving end of a processor is connected with the signal output end of an overheatingprotection circuit; the display signal transmitting end of the processor is connected with the signal receiving end of a display unit; the temperature signal receiving end of the processor is connected with the signal transmitting end of an analog-digital conversion circuit; the signal receiving end of the analog-digital conversion circuit is connected with the signal transmitting end of a temperature sensor; the signal transmitting end of an undervoltage protection circuit is connected with the voltage signal receiving end of the processor; the signal transmitting end of an overcurrent protection circuit is connected with the circuit signal receiving end of the processor; and the motor working signal end of the processor is connected with the signal receiving end of an isolated driving circuit. Through the corresponding protection circuits, work of a circulating water pipe is monitored in real time, thus stable operation of a water pump is guaranteed, and the service life of a circulating refrigeration system is prolonged.

Description

technical field [0001] The invention relates to a muffler, in particular to a comprehensive test cooling system for vehicle muffler. Background technique [0002] Automobile mufflers are commonly used components of automobiles, which are conducive to reducing noise pollution during driving. The rear muffler on a car has an intake pipe, a cylinder and an exhaust pipe arranged in sequence from front to back. The cylinder of the rear muffler is generally composed of two chambers at the front and rear, and the front end of the cylinder is gradually smaller from the back to the front. Conical surface, the rear end surface of the cylinder is a tapered surface that gradually decreases from front to back, so that the front and rear ends of the cylinder are compressed, reducing the volume of the two chambers, which will affect the noise reduction effect of the muffler. At the same time, the existing muffler does not have a structure that completely eliminates noise for the 80HZ wave...

AI Technical Summary

Problems solved by technology

The rear muffler on a car has an intake pipe, a cylinder and an exhaust pipe arranged in sequence from front to back. The cylinder of the rear muffler is generally composed of two chambers at the front and rear, and the front end of the cylinder is gradually smaller from the back to the front. Conical surface, the rear end surface of the cylinder is a tapered surface that gradually decreases from front to back, so that the front and rear ends of the cylinder are compressed, reducing the volume of the two chambers, which will affect the noise reduction effect of the muffler

At the same time, the existing muffler does not have a structure that completely eliminates noise for the 80HZ wave frequency band, and the wave frequency band around 80HZ is just the main concentration point of the car's noise, so the car still has a lot of noise after the noise reduction by the muffler

However, the sound in the muffler pipeline cannot be accurately offset and weakened, and the muffler will cause accelerated aging due to overheated exhaust gas, which urgently requires those skilled in the art to solve corresponding technical problems

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