Air inlet prerotator with adjustable blade angle

Abstract

The invention provides an air inlet prerotator with adjustable blade angle, and belongs to the technical field of power machinery. The air inlet prerotator with adjustable blade angle is installed atan air inlet of a compressor of a turbocharger and comprises a wheel hub, a rim and a dial assembly which are arranged coaxially from the inside to the outside; the wheel hub is connected with the airinlet of the compressor; the dial assembly comprises a first dial and a second dial which are connected with each other, the first dial and the second dial are both provided with chutes; the first dial or the second dial is connected with an electric control actuator through a movement connecting rod; one end of the wheel hub is provided with a wheel head which is used for guiding flow and preventing adjustable blades from moving along the axial direction of the wheel hub; the plurality of adjustable blades are uniformly arranged around the wheel hub, one ends of the adjustable blades are connected with the wheel hub, the other ends of the adjustable blades are connected with a deflector rod, and the deflector rod is connected with the chutes in a sliding manner. The air inlet prerotatorwith adjustable blade angle has simple structure, can widen the flow and regulation range of the supercharger compressor, and improve the economy and adaptability of an engine.

Description

technical field [0001] The invention relates to the technical field of power machinery, in particular to an air intake pre-rotator with adjustable blade angles. Background technique [0002] Turbocharger is a high-efficiency, energy-saving and environmentally friendly product, which has the advantages of improving the power and torque characteristics of the engine, reducing fuel consumption and engine noise, and improving exhaust pollution. With the increase of the supercharged engine speed and strengthening degree, especially the adaptive application of the engine in the plateau environment, the supercharger is required to have a wide flow range while increasing the pressure ratio. For the research on the flow rate of the widened compressor, technical measures such as backward curved blade design, volute intake bypass recirculation, and intake pre-swirl structure are adopted. Among them, intake pre-swirl is achieved by changing the tangential velocity of the airflow. There...

AI Technical Summary

Problems solved by technology

Most of the intake pre-swirl structures used in existing turbochargers are fixed and non-adjustable. The same fixed intake preselector cannot form a good match with different vane-shaped superchargers, and it is difficult to achieve its versatility. Changes in the operating conditions such as the external temperature and pressure of the compressor engine, such as the vehicle driving from a plain area to a plateau area, the turbocharger with a fixed intake air pre-selection device may have problems such as a decrease in efficiency, an increase in fuel consumption, and an increase in exhaust temperature. In the prior art, only the supercharger working under stable and single operating conditions adopts the intake pre-swirl structure

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