Pressure control type mechanical rotating mechanism

Abstract

A pressure control type mechanical rotating mechanism in the technical field of mechanical design comprises a gas compressor, an engine, a turbine, connecting pipes, a valve seat, a valve body, a rotating shaft, a volume cavity, a rotating body, and an elastic part, wherein the rotating body is arranged in the volume cavity and is in sealing contact with the inner wall surface of the volume cavity, the left wall surface of a partition plate is connected with the rotating body by the elastic part, two ends of a first connecting pipe are respectively communicated with the air inlet of the volume cavity and an engine exhaust pipe, and two ends of a third connecting pipe are respectively communicated with an engine admission pipe and the volume cavity at the right side of the partition plate. When the pressure of the engine admission pipe is higher, the valve body is driven by the rotating body to rotate clockwise, the exhaust recycling rate of the engine is relatively large, and the detonation pressure of the engine is less; when the pressure of the engine admission pipe is lower, the valve body is driven by the rotating body to rotate anticlockwise, the exhaust recycling rate of the engine is relatively small, and the oil consumption of the engine is less. The system is reasonable in design, simple in structure and suitable for the exhaust recycling system of a 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 pressure-controlled mechanical 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 part of the exhaust gas produ...

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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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