Exhausting and re-circulating rate mechanical control mechanism

Abstract

The invention discloses an exhausting and re-circulating rate mechanical control mechanism in the mechanical technical field. The exhausting and re-circulating rate mechanical control mechanism comprises a gas compressor, an engine, a turbine, a connecting tube, a rotary shaft, an accommodating cavity, a fixed body, a penetrating tube, an elastic part, a partition plate, a rotary body and a connecting plate, wherein one end of the rotary body extends into the first penetrating tube and is in seal contact with the wall surface of the first penetrating tube; the other end of the rotary body is fixedly connected with the partition plate; the two ends of the first connecting tube are communicated with a gas inlet tube of the gas compressor and a gas exhausting tube of the engine. When the pressure of the gas inlet tube of the engine is relatively high, the rotary body drives the valve body to clockwise rotate, so that the larger the exhausting and re-circulating rate of the engine, the lower the detonation pressure of the engine; when the pressure of the gas inlet tube of the engine is relatively low, the rotary body drives the valve body to counterclockwise rotate, so that the smaller the exhausting and re-circulating ate of the engine, the oil consumption of the engine is relatively low. The exhausting and re-circulating rate mechanical control mechanism is reasonable in design, simple in structure and suitable for an exhausting and re-circulating system for a booster engine.

Description

technical field [0001] The invention relates to an exhaust gas recirculation system in the technical field of mechanical design, in particular to a mechanical control mechanism for exhaust gas recirculation rate. 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 exh...

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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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