Engine high-speed working condition detonation pressure reducing device

Abstract

An engine high-speed working condition detonation pressure reducing device in the technical field of machine design comprises an air compressor, an engine, a turbine, connecting pipes, an adjusting mechanism, a rotating body, penetrating pipes, a stepping motor and a rotating shaft, wherein the inlet and the outlet of the engine are respectively connected with the air outlet of an engine air intake pipe and the air inlet of an engine air exhaust pipe; the rotating body is arranged inside the adjusting mechanism; the penetrating pipes are arranged on the rotating body; one end of the rotating shaft is connected with the stepping motor; the other end of the rotating shaft penetrates through the lower wall surface of the adjusting mechanism and is fixedly connected with the rotating body together. In the engine high-speed working condition, the stepping motor drives the rotating body to rotate so as to ensure that a third connecting pipe and a fourth connecting pipe are communicated and a first connecting pipe and a second connecting pipe are communicated, and the detonation pressure of the engine is enabled to be relatively low. The device is reasonable in design, simple in structure, and suitable for air intake and exhaust system design of a supercharged engine.

Description

technical field [0001] The invention relates to an engine intake and exhaust system in the technical field of mechanical design, in particular to an engine explosion pressure reduction device under high-speed conditions. 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 inhal...

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.

Images