Pressure control type exhausting recycling control device

Abstract

The invention relates to a pressure control type exhausting recycling control device in the technical field of mechanical design. The pressure control type exhausting recycling control device comprises a gas compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotating shaft, a volume cavity, a fixed body, penetrating pipes, an elastic component, a partition board, a rotating body and a connecting plate, wherein one end of the rotating body stretches into a first through pipe and is in seal contact with the wall surface of the first through pipe, the other end of the rotating body is fixedly connected with the partition board together, one end of a third connecting pipe is communicated with an air inlet pipe of the engine, and the other end of the third connecting pipe is communicated with the volume cavity after penetrating through the outer wall surface of the volume cavity. When the pressure of the air inlet pipe of the engine is higher, the rotating body drives the valve body to rotate clockwise, the exhausting recycling rate of the engine is higher, and the detonation pressure of the engine is lower; when the pressure of the air inlet pipe of the engine is lower, the rotating body drives the valve body to rotate anticlockwise, the exhausting recycling rate of the engine is lower, and the oil consumption of the engine is lower. The pressure control type exhausting recycling control device is reasonable in design and simple in structure and is suitable for exhausting recycling systems of supercharged engines.

Description

technical field [0001] The invention relates to an exhaust gas recirculation system in the technical field of mechanical design, in particular to a pressure-controlled exhaust gas recirculation control 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 of the exhaus...

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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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