Air inlet and outlet series system with adjustable air inlet pressure

Abstract

The invention discloses an air inlet and outlet series system with an adjustable air inlet pressure, which belongs to the technical field of mechanical design. The air inlet and outlet series system comprises air compressors, an engine, turbines, connecting pipes, through pipes, a volume cavity, a moving body and a spring, wherein the moving body is arranged in the volume cavity, and is hermetically contacted with the inner wall face of the volume cavity; a first through pipe and a second through pipe pass through the upper and lower wall faces of the moving body; the two ends of a third connecting pipe are communicated with an engine air inlet pipe and the right wall face of the volume cavity respectively; and the left wall face of the moving body is connected with the left wall face of the volume cavity. When a pressure in the engine air inlet pipe is low, the moving body is driven to move rightwards, and two boosters are connected in series for working; and when the pressure in the engine air inlet pipe is high, the moving body is driven to move leftwards, and only a first booster works. The air inlet and outlet series system has the advantages of reasonable design, simple control strategy and suitability for turbine boosting systems of various cylinder quantities.

Description

technical field [0001] The invention relates to a turbocharger system in the technical field of mechanical design, in particular to an air intake pressure adjustable intake and exhaust series system capable of realizing turbochargers working in series. Background technique [0002] In the face of increasingly severe environmental and energy crises, increasing power density, reducing fuel consumption and reducing emissions have become the main directions for the development of internal combustion engines. Turbocharging is not only the most effective way to strengthen the internal combustion engine, but also achieves the purpose of reducing fuel consumption and reducing emissions at the same time, which has become an indispensable technical means of modern internal combustion engine technology. However, due to the influence of the flow characteristics of the turbocharger compressor, for the traditional single-scroll single-pressure system, the compressor can only work in a rel...

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Problems solved by technology

[0003] After searching the existing technical literature, it is found that the Chinese patent application number is 200510025774.0, and the patent name is: large and small turbochargers series-parallel adjustable height boosting system. , can realize the series-parallel adjustment of two superchargers; but this invention has a complicated structure due to the use of multiple control valves

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