Displacement cavity type homo-mechanism intake and exhaust regulating device

Abstract

A displacement cavity type homo-mechanism intake and exhaust regulating device which belongs to the technical field of internal combustion engines comprises a compressor, a turbine, an engine, connecting pipes, a displacement cavity, a moving part, penetrating pipes, and an elastic part. Both the first penetrating pipe and the second penetrating pipe penetrate through an upper wall and a lower wall of the moving part. The right wall of the moving part is connected with a right wall of the displacement cavity through the elastic part. When the engine operates, the moving part can move left and right in the displacement cavity. At the low operating speed, the left pressure of the moving part is low, the moving part moves to the left, the first connecting pipe is communicated with the third connecting pipe, intake of the compressor increases relatively, and the compressor scarcely surges. At high operating speed, the left pressure of the moving part is high, the moving part moves to the right, the fifth connecting pipe is communicated with the sixth connecting pipe, intake of the engine decreases relatively, and detonation pressure of cylinders decreases. The displacement cavity type homo-mechanism intake and exhaust regulating device is reasonable in design, simple in structure and applicable to turbocharging systems of engines.

Description

technical field [0001] The invention relates to an intake and exhaust system in the field of internal combustion engines, in particular to a volume chamber type intake and exhaust co-mechanism regulating device for a supercharged 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 ...

AI Technical Summary

Problems solved by technology

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

[0003] After searching the existing technical literature, it was found that Chinese patent number ZL200410050996.3, patent name: a variable modular pulse conversion supercharging device for a turbocharged diesel engine, the patented technology provides an exhaust device in the exhaust pipe The device with continuously variable volume can better take into account the high-speed and low-speed working 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 an additional A special 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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