Rotary gas valve control mechanism

Abstract

The invention discloses a rotary gas valve control mechanism and belongs to the technical field of mechanical design. The rotary gas valve control mechanism comprises a gas compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotary shaft, an accommodating cavity, a rotator and an elastic component, wherein the rotator is mounted in the accommodating cavity and is in sealed contact with the inner wall face of the accommodating cavity, the lower wall face of the rotator is connected with the lower wall face of the accommodating cavity through the elastic component, two ends of a first connecting pipe are communicated with gas inlets of an engine exhaust pipe and an accommodating chamber respectively, and two ends of a third connecting pipe are communicated with the engine exhaust pipe and the upper wall face of the accommodating cavity. When the engine exhaust pipe is high in pressure, the rotator drives the valve body to rotate clockwise, exhaust gas recirculation rate of the engine is large, and the engine is low in explosion pressure; and when the engine exhaust pipe is low in pressure, the rotator drives the valve body to rotate anticlockwise, the exhaust gas recirculation rate of the engine is small, and oil consumption of the engine is low. The rotary gas valve control mechanism is reasonable in design, simple in structure and applicable to an exhaust gas recirculation system of the 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 a rotary valve control 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 part of the exhaust gas produced by the diesel e...

AI Technical Summary

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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