Rotary distance adjustment system for valve body and valve seat

Abstract

The invention belongs to the technical field of machine design, and provides a rotary distance adjustment system for a valve body and a valve seat. The rotary distance adjustment system comprises a compressor, an engine, a turbine, connecting pipes, the valve seat, the valve body, a rotating shaft, a volume cavity, a fixed body, penetrating pipes, a flexible component, a partition plate, a rotating body and a connecting plate, wherein one end of the rotating body stretches into the first penetrating pipe and makes sealing contact with the wall surface of the first penetrating pipe, the other end of the rotating body is fixedly combined with the partition plate together, one end of the third connecting pipe is communicated with an engine exhaust pipe, and the other end of the third connecting pipe is communicated with the volume cavity after penetrating through the outer wall surface of the volume cavity. When the pressure of the engine exhaust pipe is quite high, the rotating body drives the valve body to rotate clockwise, the exhaust recirculation rate of the engine is quite high, and the detonation pressure of the engine is quite low; when the pressure of the engine exhaust pipe is quite low, the rotating body drives the valve body to rotate counterclockwise, the exhaust recirculation rate of the engine is quite low, and the fuel consumption of the engine is quite low. The rotary distance adjustment system for the valve body and the valve seat is reasonable in design, simple in structure, and applicable to an exhaust 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 a rotary valve body valve seat distance adjustment 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. Exhaust gas recirculation system is to send a small part of the exhaust gas...

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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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