Engine system with double turbine

Abstract

The invention relates to an engine system with double turbine and belongs to the technical field of an internal combustion engine. The engine system comprises air compressors, an air inlet pipe, an engine, an exhaust pipe, turbines, a volume cavity, a connecting pipe, a moving body, a spring and penetrating pipes, wherein the moving body is mounted in the volume cavity and is in sealing contact with an inner wall of the volume cavity; the first penetrating pipe and the second penetrating pipe both penetrate through left and right two walls of the moving body; and a lower wall of the moving body is connected with the lower wall of the volume cavity through the spring. When the engine is under a low-speed working condition, the moving body moves upward, only a first air compressor and a first turbine work, the pulse energy is fully utilized, the intake pressure of the engine is higher and the whole property of the engine is excellent; when the engine is under a high-speed working condition, the moving body moves downward, the first air compressor, a second air compressor, the first turbine and a second turbine simultaneously work, the pumping loss of the engine is smaller and the whole property of the engine is excellent; and the engine system with double turbine is reasonable in design, is simple in structure and is suitable for a turbo-charging system with two turbochargers.

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 twin turbines. 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 related to the rotat...

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

Images