Mechanical regulating type turbine bleeding system

Abstract

The invention belongs to the technical field of internal combustion engines and relates to a mechanical regulating type turbine bleeding system. The mechanical regulating type turbine bleeding system comprises a compressor, a turbine, the engine, a connecting pipe, a volume chamber, a moving member and an elastic component, wherein two ends of a first connecting pipe are communicated with a discharging pipe of the turbine and the left wall surface of the volume respectively, the two ends of a second connecting pipe are communicated with a discharging pipe of the engine and the left wall surface of the volume respectively, the moving member is installed in the volume chamber and connected with the lower wall surface of the volume chamber through the elastic component. During operation, the moving member can move up and down in the volume chamber. Under a low-speed working condition of the engine, the moving member moves downward, all the discharged air of the engine passes through the turbine, the air intake of the engine is relatively enlarged, and combustion conditions of cylinders are good; and under a high-speed working condition of the engine, the moving member moves upward, part of the discharged air of the engine directly flows into the discharging pipe of the turbine, the air intake of the engine is relatively reduced, and detonation pressures of the cylinders are reduced. The mechanical regulating type turbine bleeding system 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 mechanically adjustable turbine exhaust system of 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 when the ...

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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