Arc-shaped oblique flow turbocharger compressor impeller

Abstract

An arc-shaped oblique flow turbocharger compressor impeller comprises a hub, long blades and short blades. The number of the long blades and the number of the short blades both range from four to six and are identical. The long blades and the short blades are evenly distributed on the hub in a staggered mode. The tops of airflow outlets of the long blades and the tops of airflow outlets of the short blades are of an arc shape, wherein the blade tip of the arc-shaped sideline is higher than the blade root of the arc-shaped sideline, and the contour of the outer circle of the blade root of the arc-shaped sideline is consistent with the diameter of the outer circle of a wheel disc of the hub. According to the arc-shaped oblique flow turbocharger compressor impeller, the arc-shaped oblique flow outlets are used for relieving the condition that flow fields in the unfolding direction of the outlets of the impeller are distributed unevenly because the curvature of a rim of the impeller is too large, and the design parameter level of the impeller can be adjusted by adjusting the circular arc diameter of the sideline of the outlets of the impeller, so that the working efficiency of a compressor is improved.

Description

technical field [0001] The invention relates to the technical field of gasoline engine turbochargers, in particular to a gasoline engine turbocharger compressor impeller. Background technique [0002] Turbocharging technology uses the energy of exhaust gas discharged from the engine to turn the turbine impeller into mechanical work through the rotation of the turbine. The compressor impeller coaxial with the turbine impeller also runs at the same high speed to compress the fresh air and send it into the engine. Cylinders, increase the air density and air charge of the engine cylinders, thereby increasing the power of the engine, improving the combustion conditions of the fuel, and fully burning the fuel, thereby reducing fuel consumption and reducing the proportion of harmful substances in the exhaust gas discharged into the atmosphere. Then finally realize environmental protection and energy saving, improve the effect of engine power, and play the effect of restoring power ...

AI Technical Summary

Problems solved by technology

[0005] The problem with the traditional radial flow impeller is that it is easy to generate backflow on the inlet rim side of the vaneless diffuser under the low flow rate of the supercharger

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