Intake and exhaust systems for supercharged internal combustion engine

Abstract

The invention discloses an intake system and an exhaust system for a supercharged internal combustion engine in the field of internal combustion engines, which comprises the intake system and the exhaust system of the internal combustion engine. The inlet of the intake system is connected with an air filter or directly communicated with air; the outlet of the intake system is connected with an intake passage of the internal combustion engine; the inlet of the exhaust system is connected with an exhaust passage of the internal combustion engine, and the outlet of the exhaust system is connected with a main smoke exhaust pipe; the intake system at least makes the overall intake process of the intake passage of one cylinder divided into at least two intake durations, and makes the gas with different pressures pass through the intake passage during the divided intake duration and the gas with the same pressure pass through the intake passages of other cylinders in the overall intake process. The system can allow the gas with different pressures to sequentially enter the cylinder during different intake durations in sections so as to improve the transient response speed of the turbocharged internal combustion engine or the supercharging efficiency of mechanical supercharging; and the system also can realize the flow adjustment of a plurality of superchargers and better cooperative work of the plurality of superchargers.

Description

technical field [0001] The invention relates to an intake and exhaust system of a four-stroke supercharged internal combustion engine. Background technique [0002] Internal combustion engine supercharging technology: it is to use a special compressor to pre-compress the gas before entering the cylinder, increase the density of the gas entering the cylinder, and reduce the volume of the gas. In this way, the quality of the gas per unit volume is greatly increased. The gas volume can meet the combustion needs of fuel, so as to achieve the purpose of increasing engine power. Supercharging (including supercharging and intercooling, two-stage supercharging, sequential supercharging and other supercharging systems, the same below) technology can improve the power performance, fuel economy and emission of internal combustion engines. The supercharging method of the engine can be basically divided into three categories according to the different energy sources used to drive the su...

AI Technical Summary

Problems solved by technology

[0003] Compared with the naturally aspirated internal combustion engine of the same power, the current turbocharged internal combustion engine has a longer acceleration process time and slower transient response speed; the supercharged internal combustion engine has low supercharging efficiency; , will cause compressor surge; when multiple joints work, the intake pressure of the diesel engine will change suddenly, the control system will be complicated, etc.

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