Aluminum magnesium alloy intercooler pipes

Abstract

The invention relates to aluminum magnesium alloy intercooler pipes, in particular to an intercooler arranged between a pressurizer and an air inlet manifold of an engine. The intercooler pipes are made of aluminum magnesium alloy, and each intercooler pipe is an integrated pipe body which is bent directly by an aluminum magnesium alloy pipe and does not have joints and weld joints. The aluminum magnesium alloy intercooler pipes have the advantages of high anti-fatigue strength, high plasticity, corrosion resistance and heat dissipation, attractive appearance, high airflow smoothness in the pipes, high impermeability and the like, a machining process is simple, and manufacturing cost is low.

Description

technical field [0001] The invention relates to an intercooler installed between a supercharger and an engine intake manifold. Background technique [0002] In recent years, with the development of highways, the pursuit of high power performance by car owners has become increasingly intense, and the requirements for environmental protection and energy saving have become higher and higher. There are more and more cars with turbocharged engines. The ratio increases, the air temperature rises after compression, and the air density does not increase proportionally. In order to further increase the engine power, whether it is a supercharged engine or a turbocharged engine, it is necessary to connect the supercharger and the engine intake manifold. An intercooler is installed between them, and its function is to cool the charge air, so as to reduce the air temperature at the outlet of the engine exhaust pipe and increase the charge density. The full name of the intercooler is an ...

AI Technical Summary

Problems solved by technology

In addition, there should be no welding traces in the intercooler tube that would hinder the airflow, so as to prevent the occurrence of pressure loss due to too many solder joints and knuckles that lead to poor airflow smoothness

[0004] At present, the intercooler tubes are made of 20 or 30 series stainless steel tubes with thicker diameters but extremely thin tube walls and elbows. This processing method is costly and has a long production cycle. It cannot guarantee its mechanical properties and is difficult. Control Install Metrics

Due to the poor mechanical fatigue resistance of stainless steel, when the engine runs to a certain extent beyond the fatigue strength, it will break at the weld, directly affecting the normal theoretical design function of the engine, and causing accidents

In addition, due to the limitation of yield strength, stainless steel pipes cannot be bent, but can only be assembled and welded, which greatly affects the aesthetics of the workpiece.

[0005] Due to the spatial layout of the intercooler tube, there will be more twists and turns, and the shape is more complicated. In addition, the wall thickness is thinner, which increases the difficulty of welding and increases the scrap rate.

Traditional manual welding or mechanical welding, the workpiece is easily deformed during welding and the dimensional accuracy is not enough, which will not only affect the assembly, but also affect the performance

Labor and raw materials (the degree of fit between straight pipe and elbow) are also greatly affected, so the requirements for personnel quality and raw materials are high, labor intensity is high, productivity is low, and problems such as weld penetration and false welding are prone to occur. The old production process of the intercooler tube can no longer meet the production demand due to the harsh welding working environment and the higher requirements of the main engine factory for the products.

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