Compressor front and rear differential pressure high pressure circulating device

Abstract

A compressor front and rear differential pressure high pressure circulating device belongs to the technical field of machinery design and comprises a compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotating shaft, an accommodating cavity, a fixing body, through pipes, a separation plate, a rotation body and a connection plate. One end of the rotation body extends into a first through pipe and has a sealed contact with the wall surface of the first through pipe; the other end of the rotation body is fixedly connected with the separation plate; two ends of the first connecting pipe are respectively communicated with an air inlet of the accommodating cavity and an air exhaust pipe of the engine; and two ends of a second connecting pipe are respectively communicated with an air outlet of the accommodating cavity and an air inlet pipe of the compressor. When large differential pressure between the back and front parts of the compressor exists, the rotating body drives valve body to clockwise rotate; large high pressure exhausting and recirculation efficiency of the engine is achieved; and low engine detonation pressure is acquired. The compressor front and rear differential pressure high pressure circulating device is rationally designed, simply structured and suitable for exhaust recirculation system of the engine.

Description

technical field [0001] The invention relates to a high-pressure exhaust gas recirculation system in the technical field of mechanical design, in particular to a high-pressure circulation device with pressure difference control between front and back of a compressor. Background technique [0002] Harmful emissions from engines are a major source of air pollution. With the increasing importance of environmental protection, the goal of reducing harmful emissions from engines has become an important direction for engine development in the world today. With the world's consumption of petroleum products increasing year by year, international oil prices remain high, and the economy of diesel vehicles is becoming more and more prominent, which makes diesel engines occupy an increasingly important position in vehicle power. Therefore, it is the primary task of diesel engine designers to carry out research on the control methods of harmful emissions from diesel engines. The high-pres...

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Problems solved by technology

[0003] After searching the existing technical literature, it is found that Chinese patent number ZL200410063439.5, patent name: electronic exhaust gas recirculation gas control device, this patent technology provides a device for controlling the high-pressure exhaust gas recirculation rate of the engine, which can compare Well take into account the medium and high speed conditions of the engine; but the change of the high-pressure exhaust gas recirculation rate is realized through a special control structure, which makes the control system more complicated

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