Elastic part adjusted type high-pressure exhaust circulation device

Abstract

An elastic part adjusted type high-pressure exhaust circulation device in the technical field of mechanical design comprises a gas compressor, an engine, a turbine, connecting pipes, a volume cavity, an elastic part and a rotation body, wherein the rotation body is connected with the right wall face of a fixing plate through the elastic part, two ends of the first connecting pipe are respectively communicated with a gas compressor intake pipe and an engine exhaust pipe, one end of the second connecting pipe is communicated with an engine intake pipe, and the other end of the second connecting pipe is communicated with the volume cavity. When pressure of the engine intake pipe is high, the rotation body drives a butterfly valve to rotate clockwise, the exhaust recirculation rate of the engine is high, and the engine blast pressure is low. When the pressure of the engine intake pipe is low, the rotation body drives the butterfly valve to rotate counterclockwise, the exhaust recirculation rate of the engine is low, and the engine oil consumption is low. The elastic part adjusted type high-pressure exhaust circulation device is reasonable in design, simple in structure and suitable for an exhaust recirculation system of a supercharged engine.

Description

technical field [0001] The invention relates to an exhaust gas recirculation system in the technical field of mechanical design, in particular to an elastic component-adjustable high-pressure exhaust gas circulation device. 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. Exhaust gas recirculation system is to send a small part...

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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 exhaust gas recirculation rate of the engine, which can better Taking into account the medium and high speed conditions of the engine; but the change of the exhaust gas recirculation rate is realized through a special control structure, which makes the control system more complicated

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