Low-pressure gas circulation rotating speed regulating system

Abstract

The invention discloses a low-pressure gas circulation rotating speed regulating system in the technical field of mechanical design. The low-pressure gas circulation rotating speed regulating system comprises a regulating body, a rotating shaft, a rotating body, a stretching body, centrifugal bodies, balls, a pull rod and springs. The rotating shaft and the rotating body are fixed together; the stretching body and the centrifugal bodies are arranged in the rotating body; the balls are inlaid into the stretching body; one side walls of the centrifugal bodies make contact with the stretching body through the balls, and the other side walls of the centrifugal bodies are connected with the inner wall surface of the rotating body through the first springs; and the top of the stretching body is connected with the inner wall surface of the rotating body through the second springs. According to the low-pressure gas circulation rotating speed regulating system, when the rotating speed of an engine is high, a rotating plate rotates clockwise, and the high-pressure exhaust recirculation rate of the engine is high; and when the rotating speed of the engine is low, the rotating plate rotates counterclockwise, and the high-pressure exhaust recirculation rate of the engine is low. The low-pressure gas circulation rotating speed regulating system is reasonable in design, simple in structure and applicable to optimal design of an engine high-pressure exhaust gas recirculation system.

Description

technical field [0001] The invention relates to a low-pressure gas circulation speed regulating system in the technical field of mechanical design, in particular to a low-pressure gas circulation speed regulating system suitable for a high-pressure exhaust gas recirculation system. 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...

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Problems solved by technology

[0003] After searching the existing technical literature, it was 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 take 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, so that the control system changes quite complicated

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