Mechanical device utilizing tensile force of elastic part

Abstract

The invention discloses a mechanical device utilizing the tensile force of an elastic part in the technical field of internal combustion engines. The device comprises admission pipes, an engine, exhaust pipes, an air compressor, a turbine, connecting pipes, a volume cavity, a moving body and the elastic part, wherein the connecting pipes are communicated with the wall surfaces of the volume cavity; the moving body is arranged in the volume cavity, and contacts the inner wall surface of the volume cavity in a sealed way; a through pipe penetrates through the left and right wall surfaces of the moving body; and the two ends of the elastic part are connected with the lower wall surfaces of the moving body and the volume cavity respectively. When the engine is under a medium / low speed working condition, the moving body moves downwards in the volume cavity, the recirculation ratio of an exhaust gas is high, the exhaust temperature of each cylinder of the engine is low, and the overall performance of the engine is high; and when the engine is under a high speed working condition, the moving body moves upwards in the volume cavity, the recirculation ratio of the exhaust gas is low, and the dynamic property and overall performance of the engine is high. The device is rational in design, simple in structure and applicable to an exhaust gas recirculation system with a turbocharger.

Description

technical field [0001] The invention relates to an exhaust gas recirculation system in the field of internal combustion engines, in particular to a mechanical device with a turbocharger utilizing elastic component tension. 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 ...

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 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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