Adjustment device for reducing exhaust back pressure of internal combustion engine

Abstract

The invention discloses an adjustment device for reducing exhaust back pressure of an internal combustion engine, which is suitable for being applied to various different forms of internal combustion engines in internal combustion engine classification. The core technology is that an adjustment device, which is formed by an ejector, a water ring vacuum pump and a water cooling box alone or in combination and used for reducing the exhaust back pressure of the internal combustion engine, is serially connected behind an outlet of an exhaust pipe of the internal combustion engine or at a turbine wheel combustion gas flow outlet in a supercharger of a turbocharged internal combustion engine, so that an exhaust back pressure value of the internal combustion engine can be greatly reduced and adjusted, and power, economic and exhaust performance indexes of an internal combustion engine device are effectively improved. The adjustment device disclosed by the invention has the advantages of mature technology, simple structure, safe and reliable use, great adjustment strength and good effect.

Description

technical field [0001] The invention relates to an adjustment device for reducing the exhaust back pressure of various internal combustion engines classified in different forms in the classification of internal combustion engines; the regulation of the gas pressure before the turbine stage / gas pressure after the turbine stage in the turbocharged system or compound supercharged system of the internal combustion engine Device; a regulating device used for the internal combustion engine performance test bench for simulating plateau environment to obtain plateau low pressure environment pressure. Background technique [0002] Internal combustion engine exhaust back pressure (gas pressure in the exhaust pipe of internal combustion engine) P T , is an important technical parameter in the exhaust working process of the internal combustion engine. Taking a four-stroke internal combustion engine as an example, its magnitude is directly related to the expansion ratio, output power, p...

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Problems solved by technology

[0018] In order to improve the existing "controlling and reducing back pressure technology", the pressure reduction range is small and it cannot be universally applicable to various internal combustion engines of different classification forms except turbocharging (including com

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