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Combustion-supporting injection device and method for internal combustion engine and internal combustion engine

A technology of injection device and internal combustion engine, which is applied in the directions of fuel injection device, fuel injection control, machine/engine, etc., can solve the problems of increased soot emission and poor low-pressure atomization characteristics, so as to reduce soot emissions and improve utilization. Efficient and efficient combustion effect

Active Publication Date: 2020-02-28
BEIJING JIAOTONG UNIV
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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

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  • Combustion-supporting injection device and method for internal combustion engine and internal combustion engine
  • Combustion-supporting injection device and method for internal combustion engine and internal combustion engine
  • Combustion-supporting injection device and method for internal combustion engine and internal combustion engine

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Embodiment Construction

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present specification in conjunction with the accompanying drawings in the embodiments of the present specification. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0029] At present, in-cylinder direct-injection dual-fuel engines ignite diesel fuel with poor low-pressure atomization, and the mixed fuel and gaseous fuel are sprayed from the same injection hole, which will increase the soot emission. Therefore, the present invention provides a combustion-supporting injection device for an internal combustion engine, which injects mixed fuel and gaseous fuel respectively from two layers of injection hole...

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Abstract

The invention discloses a combustion-supporting injection device and method for an internal combustion engine and the internal combustion engine. The device comprises a main body, a controller, a drainage device, a diesel channel, an internal storage cavity, a limiting sleeve, natural gas channels, natural gas spray holes, natural gas assisted diesel spray holes and diesel internal circulation holes, wherein a center line of the diesel channel coincides with a center line of the main body; the internal storage cavity surrounds the diesel channel; the drainage device is mounted in the middle ofthe diesel channel; the natural gas channels comprise a first natural gas channel and a second natural gas channel; the lower end of the first natural gas channel communicates with the internal storage cavity; the diesel internal circulation holes communicate with the diesel channel and the internal storage cavity; the natural gas assisted diesel spray holes are located on one side of the lower end of the main body and communicate with the internal storage cavity; and the natural gas spray holes are located at the tail end of the second natural gas channel and communicate with the second natural gas channel, and the downward inclined angle of the natural gas spray holes is not equal to that of the natural gas assisted diesel spray holes.

Description

technical field [0001] The invention relates to the technical field of internal combustion engines, in particular to a combustion-supporting injection device and method for internal combustion engines and the internal combustion engine. 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. [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 the emission of soot. C...

Claims

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Application Information

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IPC IPC(8): F02M43/04F02D41/00F02D19/10
CPCF02D19/0647F02D19/0689F02D19/0694F02D19/105F02D41/0025F02M43/04
Inventor 刘杰马彪赵洪波于瑞广
Owner BEIJING JIAOTONG UNIV
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