Turbocharger structure capable of achieving single-stage supercharging and two-stage supercharging

Abstract

The invention provides a turbocharger structure capable of achieving single-stage supercharging and two-stage supercharging. The turbocharger structure capable of achieving single-stage supercharging and two-stage supercharging comprises a turbine and an air compressor. The air compressor comprises an impeller A and an impeller B. The impeller A is connected with the atmosphere through an inlet air circuit I, so that air is introduced into the air compressor. A switching control valve I is connected to the rear portion of the outlet air circuit I of the impeller A, and the air circuit is divided into two branches behind the switching control valve I, one branch of the air circuit is connected with a communication air circuit I, and the other branch of the air circuit is connected with a communication air circuit II. A switching control valve II is installed on an inlet air circuit II of the impeller B and connected with two air circuits, one air circuit is connected with the communication air circuit I, and the other air circuit is connected with the atmosphere. The outlet air circuit II of the impeller B and the communication air circuit II are connected with an air inlet pipe of an internal combustion engine after being connected and converged into one air circuit, so that compressed air is supplied to the internal combustion engine. According to the turbocharger structure capable of achieving single-stage supercharging and two-stage supercharging, switching between two-stage supercharging and single-stage supercharging can be achieved, and the structural dimension of a supercharging system can be obviously reduced.

Description

technical field [0001] The invention relates to an internal combustion engine, specifically a supercharger of a turbocharged internal combustion engine. Background technique [0002] The use of two-stage supercharging can improve the efficiency of the supercharger and improve the economy and emission of the supercharged internal combustion engine, so it has been widely used. But at this stage, this supercharging technology is generally realized by connecting several sets of superchargers through pipelines and valves. The disadvantage is that too many pipelines and valves will occupy a lot of space. In order to save space, the patent with publication number CN104612983A proposes a single-shaft serial two-stage compressor structure, but the disadvantage of this structure is that it can only perform two-stage supercharging instead of single-stage supercharging. Contents of the invention [0003] The object of the present invention is to provide a single-stage and two-stage t...

AI Technical Summary

Problems solved by technology

But at this stage, this supercharging technology is generally realized through the connection of several sets of superchargers through pipelines and valves. The disadvantage is that too many pipelines and valves will occupy a lot of space.

In order to save space, the patent with publication number CN104612983A proposes a single-shaft serial two-stage compressor structure, but the disadvantage of this structure is that it can only perform two-stage supercharging instead of single-stage supercharging

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