Combustion injection device, method and internal combustion engine for reducing NOx emissions

Abstract

This specification discloses a combustion-supporting injection device, method and internal combustion engine for reducing NOx emissions. Holes, internal circulation holes; wherein, the centerline of the water flow channel coincides with the center line of the main body; the internal storage cavity surrounds the water flow channel; the drain is installed in the middle of the water flow channel; the lower end of the diesel channel is connected to the internal storage cavity; the internal communication hole It communicates with the water channel and the internal storage chamber; the auxiliary nozzle hole is located on the side of the lower end of the main body and communicates with the internal storage chamber; the natural gas nozzle hole is located at the end of the natural gas channel and communicates with the natural gas channel, and the angle of downward inclination of the natural gas nozzle hole is not equal to the natural gas auxiliary Angle of downward slope of the diesel nozzle.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a combustion-supporting injection device, a method and an internal combustion engine for reducing NOx emissions. Background technique [0002] At present, dual-fuel engines are generally designed by modifying diesel engines. This type of engine uses natural gas as the main fuel and is ignited by diesel to ignite the natural gas. However, the in-cylinder direct injection dual-fuel engine has poor low-pressure atomization characteristics for igniting diesel oil, and the existing technology is to spray the mixed fuel and the gaseous fuel from the same nozzle, so that the combustion position in the cylinder is the same, which is likely to cause an increase in soot emissions. High and elevated NOx gas emissions. [0003] Then, it becomes an urgent problem to be solved to provide an injection device which improves the atomization effect of diesel oil and reduces t...

AI Technical Summary

Problems solved by technology

However, the in-cylinder direct injection dual-fuel engine has poor low-pressure atomization characteristics for igniting diesel oil, and the existing technology is to spray the mixed fuel and the gaseous fuel from the same nozzle, so that the combustion position in the cylinder is the same, which is likely to cause an increase in soot emissions. High and elevated NOx gas emissions

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