Supercharging device of engine

Abstract

The invention discloses a supercharging device of an engine. The supercharging device comprises a turbine driving mechanism, wherein an air compression device is arranged at the back surface of the turbine driving mechanism; the turbine driving mechanism comprises a volute; an outer cover is arranged at the front surface of the volute; a closed volume cavity is formed by the outer cover and the volute; an waste air inlet is formed in the volute; a volumetric turbine is arranged in the volume cavity, and comprises a wheel disk; a supercharging turbine is fixed to the front surface of the wheel disk; a volumetric impeller is arranged on the wheel disk at the periphery of the supercharging turbine; a wheel shaft, stretching out of the volute, of the supercharging turbine is arranged at the back surface of the wheel disk; a cylindrical air separation plate is arranged between the volumetric impeller and the supercharging turbine; a notch is formed in the wall of the cylindrical air separation plate; and a general air exhaust outlet is formed in the outer cover. In a low pressure state, the volumetric impeller drives the turbine driving mechanism to rotate, when a throttle is advanced, the speed is increased obviously, and when the throttle is retarded, no surging occurs. The supercharging device is applicable to large transport planes, civil aircrafts, fighter planes and so on.

Description

technical field [0001] The invention relates to an engine, in particular to a supercharging device for the engine. Background technique [0002] There are two main types of existing aero-engines: piston engine and spray booth engine. Regardless of the type, as an aero-engine, it needs to meet the requirements of high power-to-weight ratio, low fuel consumption, small windward area, safe and reliable operation, and long service life. , Maintenance and repair convenience requirements. Existing aero-engines are highly complex and precise machines. When the throttle is increased or decreased, there will be a surge hazard, the speed increase is not obvious, the compression ratio is not high, and the fuel consumption is large. In addition, the requirements for materials are also high. In the field of automobiles, turbocharging is obvious after starting or when the accelerator is increased, but the boost is not obvious at the initial stage or when the accelerator is on the hour, a...

AI Technical Summary

Problems solved by technology

Existing aero-engines are highly complex and precise machines. When the throttle is increased or decreased, there will be surge damage, the speed increase is not obvious, the compression ratio is not high, and the fuel consumption is large. In addition, the requirements for materials are also high.

In the field of automobiles, the turbo boost is obvious after starting or when the accelerator is increased, but the boost is not obvious and the pressure is unstable in the initial stage or when the accelerator is on the hour.

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