Controllable gas path device with elastic mechanism

Abstract

The invention discloses a controllable gas path device with an elastic mechanism and relates to the field of a mechanical design technology. The controllable gas path device comprises a gas compressor, an engine, a turbine, connecting pipes, a valve base, a valve body, a rotating shaft, a volume chamber, a fixing body, penetration pipes, an elastic assembly, a baffle, a rotating body and a connecting plate; one end of the rotating body stretches into a first penetration pipe and forms sealing contact with the wall surface of the first penetration pipe, the other end of the rotating body is fixed together with the baffle, one end of a second connecting pipe is connected with the exhaust pipe of the engine, and the other end of the second connecting pipe is connected with the volume chamber. When the air inlet pipe of the engine is relatively high in pressure, a butterfly valve is driven to rotate clockwise by the rotating body, so that the air exhaust recirculation rate of the engine is relatively great and the detonation pressure of the engine is relatively lower; when the air inlet pipe of the engine is relatively low in pressure, the butterfly valve is driven to rotate anticlockwise by the rotating body, so that the air exhaust recirculation rate of the engine is relatively low and the fuel consumption of the engine is also relatively lower. The gas path device is reasonable in design and simple in structure, thus the gas path device is applied to the air 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 an elastic mechanism-controlled air circuit device. 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 produc...

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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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