A kind of intake 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 intake pre-rotator with adjustable blade angles. Background technique [0002] Turbocharger is an environmentally friendly product with high efficiency and energy saving. It has the advantages of improving engine power and torque characteristics, reducing fuel consumption and engine noise, and improving exhaust emissions. With the increase in the speed and strengthening degree of supercharged engines, especially the adaptability of the engine in the plateau environment, the supercharger is required to have a wide flow range while increasing the pressure ratio. For the study of the flow rate of the expanded compressor, the main technical measures include the design of the backward curved blade, the volute intake bypass and recirculation treatment, and the use of the intake pre-swirl structure. Among them, the intake pre-swirl changes the tangential velocity of the air flow. ...

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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