Regulating device for air intake and discharge flow of supercharger

Abstract

The invention belongs to the technical field of internal combustion engines and relates to a regulating device for air intake and discharge flow of a supercharger. The regulating device comprises a compressor, a turbine, the engine, a connecting pipe, a volume chamber, a moving member and an elastic component, wherein the moving member is installed in the volume chamber, contacts with the inner wall surface of the volume chamber in a sealing mode and is connected with the right wall surface of the volume chamber through the elastic component. During operation of the engine, the moving member can move left and right in the volume chamber. Under a low-speed working condition of the engine, the moving member moves right, a first connecting pipe is communicated with a second connecting pipe, and the flow of the compressor is relatively large, so that the surge of the compressor can be prevented; and under a high-speed working condition of the engine, the moving member moves left, a third connecting pipe is communicated with a fourth connecting pipe, the performance of the turbine is reduced, the air intake of the engine is relatively reduced, and detonation pressures of the cylinders are reduced. The regulating device for the air intake and discharge flow of the supercharger is reasonable in design, simple in structure and suitable for turbine pressurization systems of engines.

Description

technical field [0001] The invention relates to an air intake system in the field of internal combustion engines, in particular to a supercharger intake and exhaust flow regulating device for a turbocharged engine. Background technique [0002] With the development of modern society, people have higher and higher requirements on the power and economy of the engine. In the case of a certain displacement, the most effective way to increase the output power of the engine is to provide more fuel for combustion. It is easy to provide more fuel to the cylinder through the injector, but it is not so easy to provide the amount of air to match the increased amount of fuel at the same time; The effect is poor. When the fuel injection volume is constant and the cylinder air intake volume is large, the combustion is better, and the fuel consumption and emissions are lower. The traditional naturally aspirated engine completely relies on the vacuum formed in the cylinder to inhale air ...

AI Technical Summary

Problems solved by technology

However, the existing turbocharging systems cannot take into account the high and low speed conditions of the engine well.

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL200410050996.3, patent name: a variable modular pulse conversion supercharging device for a turbocharged diesel engine, this patent technology provides an exhaust pipe in the exhaust pipe The device with continuously variable volume can better take into account the high and low speed conditions of the engine; but the change of the exhaust volume in the exhaust pipe is realized by moving the moving rod up and down, which requires adding a special The control mechanism is used to control the movement of the moving rod, so that the structure of the booster system becomes more complicated, and the sealing of the exhaust pipe system is also poor under high temperature conditions

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