Heat insulation aluminum plate for automobile exhaust pipe

Abstract

The invention discloses a heat insulation aluminum plate for an automobile exhaust pipe. The heat insulation aluminum plate comprises a plurality of convex parts and concave parts, wherein the convex parts and the concave parts are sequentially and alternately distributed, at least one micro passing hole is formed in each convex part and / or each concave part, and the hole diameter of each micro passing hole is 0.2mm to 1mm. In addition, a plurality of convex-concave embossing patterns are formed on the heat insulation aluminum plate, so the effect of improving the rigidity of the heat insulation aluminum plate is achieved; in addition, a plurality of micro passing holes are formed in the heat insulation aluminum plate, so the effect of sound absorption is achieved. The rigidity of the heat insulation aluminum plate is higher, and the thickness of the heat insulation aluminum plate is reduced on the premise that the new structure reaches the same performance, so the cost is reduced, meanwhile, under the condition that the hole diameter is unchanged, the heat insulation aluminum plate with the thinner thickness is more favorable for absorbing the high-frequency noise of an automobile.

Description

technical field [0001] The invention relates to auto parts, in particular to a heat-insulating aluminum plate used for an auto exhaust pipe. Background technique [0002] The automobile exhaust pipe usually generates huge heat during the exhaust process. If no corresponding measures are taken, it will affect the normal operation of other parts of the automobile chassis and reduce the service life of the device. Therefore, an insulating aluminum plate is usually installed above the exhaust pipe, which can well isolate the heat generated by the exhaust pipe and avoid the influence of overheating on other parts of the car chassis. [0003] As a heat insulation device, the heat-insulating aluminum plate mainly plays the role of diversion and heat radiation. However, under the three working conditions of idling, accelerating and constant speed, the engine acts as a noise source, and the airflow will be discharged through the exhaust pipe. The exhaust pipe also makes noise due t...

AI Technical Summary

Problems solved by technology

However, the existing heat-insulating aluminum plate only plays the role of diversion and radiation heat dissipation, but has no sound-absorbing effect.

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