Exhaust recirculation system with elastic component

Abstract

The invention relates to an exhaust recirculation system with an elastic component and belongs to the technical field of internal combustion engines. The exhaust recirculation system comprises a gas inlet pipe, an engine, an exhaust pipe, a connecting pipe, an volume cavity, a moving body and the elastic element, wherein the cross section of the volume cavity is in a rectangular shape, the moving body is arranged in the volume cavity and is in contact with the inner wall surface of the volume cavity in a sealed way, and the moving body is connected with the lower wall surface of the volume cavity through the elastic element. When the engine is in a high-speed work condition, the moving body upwards moves in the volume cavity, the exhaust recirculation rate is higher, the exhaust temperature is lower, and the integral performance of the engine is better. When the engine is in a low-speed work condition, the moving body downwards moves in the volume cavity, the exhaust regeneration rate is lower, the air intake is greater, and the integral performance of the engine is better. The exhaust recirculation system has the advantages that the design is reasonable, the structure is simple, and the exhaust recirculation system is applicable to the exhaust regeneration system of the engine.

Description

Technical field [0001] The invention relates to an exhaust gas recirculation system in the field of internal combustion engines, in particular to an exhaust gas recirculation system with elastic components. Background technique [0002] Engine harmful emissions are a major source of air pollution. With the increasing importance of environmental protection issues, the goal of reducing harmful emissions from engines has become an important direction for engine development in the world today. As the consumption of petroleum products in the world increases year by year, international oil prices remain high, and the economy of diesel vehicles is becoming increasingly prominent, which makes diesel engines occupy an increasingly important position in vehicle power. Therefore, it is the primary task of the diesel engine designer to carry out research on the control methods of harmful emissions of diesel engines. The exhaust gas recirculation system sends a small part of the exhaust gas ...

AI Technical Summary

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 high and low 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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