Adjustable low-pressure exhaust circulating system with rotating mechanism

Abstract

The invention discloses an adjustable low-pressure exhaust circulating system with a rotating mechanism, and belongs to the technical field of mechanical designs. The adjustable low-pressure exhaust circulating system comprises a gas compressor, an engine, a turbine, connecting tubes, a volume cavity, an elastic component and a rotator. The rotator is connected with the right wall surface of a fixing plate by the elastic component, two ends of the first connecting tube are respectively communicated with a gas inlet tube of the gas compressor and an exhaust tube of the turbine, one end of the second connecting tube is communicated with a gas inlet tube of the engine, and the other end of the second connecting tube is communicated with the volume cavity. When the pressure of the gas inlet tube of the engine is high, the rotator drives a butterfly valve to rotate clockwise, so that an exhaust recycling ratio of the engine is high, and the explosive pressure of the engine is low; when the pressure of the gas inlet tube of the engine is low, the rotator drives the butterfly valve to rotate anticlockwise, so that the exhaust recycling ratio of the engine and oil consumption of the engine are low. The adjustable low-pressure exhaust circulating system has the advantages of reasonable design, simple structure and applicability to exhaust 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 low-pressure exhaust gas circulation system regulated by a rotating mechanism. 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 p...

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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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