Engine system with airway switching device

Abstract

The invention provides an engine system with an airway switching device in the technical field of an internal combustion engine, comprising air compressors, an air inlet pipe, an engine, an air exhaust pipe, turbos, a volume chamber, connection pipes, a moving body, a spring and penetration pipes, wherein the moving body is installed in the volume chamber and further contacts with the inner wall face of the volume chamber in a sealing way; the first penetration pipe and the second penetration pipe penetrate through the left wall face and the right wall face of the moving body; and the upper wall face of the moving body is connected with the upper wall face of the volume chamber through the spring. When the engine is located under the low speed working condition, the moving body moves upward; only the first air compressor and the first turbo work; the pulse energy is fully utilized; the air inlet pressure of the engine is higher; and the overall performance of the engine is better. When the engine is located in the high speed working condition, the moving body moves downward; the first air compressor, the second air compressor, the first turbo and the second turbo simultaneously work; the pumping loss of the engine is less; and the overall performance of the engine is better. The engine system with the airway switching device is rational in design, simple in structure and applicable for a turbo charging system with two turbo superchargers.

Description

technical field [0001] The invention relates to a turbocharging system in the field of internal combustion engines, in particular to an engine system with a gas path switching device. Background technique [0002] With the development of society and the improvement of environmental protection requirements, the application of engine supercharging technology is becoming more and more extensive. Most of the engines with medium and high power adopt turbocharging technology to improve power and reduce fuel consumption. The two basic types of turbocharging systems are constant pressure supercharging system and pulse supercharging system. Constant-pressure supercharging system, each cylinder shares a large-volume exhaust pipe, the structure of the exhaust pipe system is relatively simple, the equivalent flow area of ​​the turbine is relatively large, the pressure in the exhaust pipe is basically kept constant, and the pressure is only related to the load of the engine It is relate...

AI Technical Summary

Problems solved by technology

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL200820226936.6, patent name: a compressor parallel supercharging device for a turbocharger, this patent technology provides a device with a variable compressor shell, It can better take into account the high and low speed conditions of the engine; but the change of its housing requires a special control mechanism, which makes the structure of the booster system more complicated

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