Differential pressure valve rotary adjustment mechanism

Abstract

The invention discloses a pressure difference type valve rotation regulating mechanism, and belongs to the technical field of mechanical design. The pressure difference type valve rotation regulating mechanism includes a gas compressor, an engine, a turbine, connecting pipes, a rotating shaft, a containing cavity, a fixed body, penetrating pipes, a partition board, a rotating body and a connecting board, wherein one end of the rotating body extends into the first penetrating pipe and is in sealing contact with the wall surface of the first penetrating pipe, the other end of the rotating body is fixedly combined with the partition board, the two ends of the first connecting pipe are communicated with the gas inlet pipe of the gas compressor and the gas exhausting pipe of the turbine respectively. When the front-and-back pressure difference of the turbine is large, the rotating body drives the valve body to rotate clockwise, the exhaust gas recirculation ratio of the engine is large, and the detonation pressure of the engine is low. The pressure difference type valve rotation regulating mechanism is reasonable in design, simple in structure, and applicable to the 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 differential pressure valve rotation adjustment 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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