Rotary air intake and exhaust connecting mechanism

Abstract

The invention provides a rotary air intake and exhaust connecting mechanism in the technical field of mechanical design. The connecting mechanism comprises a compressor, an engine, a turbine, a connecting pipe, an adjusting mechanism, a rotating body, a through tube, a stepping motor and a rotating shaft, wherein the air inlet and the air outlet of the engine are respectively connected with the air outlet of an engine air inlet pipe and the air inlet of an engine exhaust pipe; the rotating body is arranged in the adjusting mechanism; the through tube is arranged on the rotating body; one end of the rotating shaft is connected with the stepping motor; the other end of the rotating shaft passes through the lower wall surface of the adjusting mechanism to be fixed together with the rotating body. When the engine is under the low-speed working condition, the stepping motor drives the rotating body to rotate so as to enable a first connecting pipe and a second connecting pipe to be communicated, therefore, the surge of the compressor can be avoided; when the engine is under the high-speed working condition, the stepping motor drives the rotating body to rotate so as to enable a third connecting pipe and a fourth connecting pipe to be communicated, therefore, the detonation pressure of the engine is relatively low. The connecting mechanism is reasonable in design, simple in structure and suitable for the design of air intake and exhaust systems of supercharged engines.

Description

technical field [0001] The invention relates to an engine intake and exhaust system in the technical field of mechanical design, in particular to a rotary intake and exhaust connection mechanism. 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 piston mov...

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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