Mechanical adjustment type air intake system

Abstract

A mechanical adjustment type air intake system in the technical field of internal combustion engines comprises a gas compressor, a turbine, an engine, a connecting pipe, a volume cavity, a moving plate and an elastic component. The cross section of the volume cavity is rectangular, two ends of the connecting pipe are respectively connected with an inlet pipe of the engine and the left wall surface of the volume cavity, and the moving plate is installed in the volume cavity, is in sealing contact with the inner wall surface of the volume cavity and is connected with the upper wall surface of the volume cavity through the elastic component. In the working process of the engine, the moving plate can move vertically in the volume cavity. On a low-speed working condition, the total volume of a rear inlet pipe of the gas compressor becomes small, the inlet pressure is increased, and the charging efficiency of the engine is high; and on a high-speed working condition, the total volume of the rear inlet pipe of the gas compressor is increased, the inlet pressure is reduced, and the detonation pressure of the engine is reduced. The mechanical adjustment type air intake system is reasonable in design, simple in structure and suitable for a turbocharging system of the engine.

Description

technical field [0001] The invention relates to an intake system in the field of internal combustion engines, in particular to a mechanically adjustable intake system for supercharged engines. 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 moves ...

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

Images