Intake pressure regulating type valve rotating mechanism

Abstract

Disclosed is an intake pressure regulating type valve rotating mechanism in the technical field of mechanical design. The intake pressure regulating type valve rotating mechanism comprises a gas compressor, an engine, a turbine, connecting pipes, a volume cavity, an elastic part and a rotator. The rotator is connected with the left wall surface of a fixing plate through the elastic part, two ends of a first connecting pipe are communicated with a gas compressor intake pipe and a turbine exhaust pipe respectively, one end of a second connecting pipe is communicated with an engine intake pipe, and the other end of the second connecting pipe is communicated with the volume cavity. When the engine intake pipe is high in pressure, the rotator drives a butterfly valve to rotate clockwise, exhaust gas recirculation rate of the engine is high, and detonation pressure of the engine is low; when the engine intake pipe is low in pressure, the rotator drives the butterfly valve to rotate anticlockwise, exhaust gas recirculation rate of the engine is low, and oil consumption of the engine is low. The intake pressure regulating type valve rotating mechanism is reasonable in design, simple in structure and applicable to an exhaust gas recirculation 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 an intake pressure regulating valve body 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 g...

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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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