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Double-layer injection fuel oil injector used for diesel oil and dimethyl ether

A fuel injector, dimethyl ether technology, applied in the field of internal combustion engines

Inactive Publication Date: 2008-02-06
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At home and abroad, there is no fuel injector that injects diesel and dimethyl ether into the engine cylinder at the same time

Method used

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  • Double-layer injection fuel oil injector used for diesel oil and dimethyl ether

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Embodiment Construction

[0008] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings.

[0009] As shown in Figure 1, the present invention mainly includes: diesel injection hole 1, dimethyl ether injection hole 2, fuel injector oil tank 3, fuel injector needle valve 4, dimethyl ether channel 5 in the fuel injector needle valve body, Injector needle valve body 6, injector tight cap 7, injector tappet 8, injector body 9, DME oil outlet check valve spring 10, DME oil outlet check valve ball 11, DME oil inlet hole 12, DME oil inlet check valve ball 13, DME oil inlet check valve spring 14, booster diesel inlet 15, booster piston right cavity 16, booster piston middle cavity 17, Booster piston intermediate chamber through hole 18, fuel injector protective cap 19, fuel injector pressure regulating screw 20, fuel injector pressure regulating spring upper seat 21, fuel injector pressure regulating nut 22, fuel injector pressure regul...

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Abstract

A double-layer fuel injector used for diesel oil and DME mainly consists of a fuel injector needle valve, a fuel injector needle valve body, a fuel injector body, a DME oil outlet one-way valve, a DME oil inlet one-way valve and a pressure boosting piston, etc. The pressure boosting piston, the DME oil outlet one-way valve and the DME oil inlet one-way valve are arranged inside the fuel injector. The DME oil outlet one-way valve is communicated with a DME spray hole through a DME groove in the fuel injector needle valve body and a DME channel in the fuel injector needle valve body. A diesel oil inlet is communicated with the oil groove of a fuel injector through the diesel oil inlet of the fuel injector body, a rotating groove in the fuel injector needle valve body and the diesel oil channel in the fuel injector needle valve body. A diesel oil spray hole at the lower part of the fuel injector needle valve body is interleaved and arranged with the DME spray hole and the two have the same spray hole included angle. The present invention provides a double-layer fuel injector used for diesel oil and DME, wherein the original diesel engine fuel injection system can be used as a diesel fuel injection system and a DME drive system at the same time, and the two fuels are injected separately into the engine cylinders through the injector.

Description

technical field [0001] The invention relates to an internal combustion engine fuel injector, in particular to a double-layer injection fuel injector for diesel and dimethyl ether, and belongs to the technical field of internal combustion engines. Background technique [0002] Compression-ignition engines generally use diesel as fuel, and have been highly valued by people because of their high thermal efficiency. But it emits high levels of harmful soot and nitrogen oxides. People have taken many technical measures to reduce their emissions, but it is difficult to reduce them at the same time. As an emerging clean alternative fuel, dimethyl ether has a high cetane number, no C-C bond in its molecular structure, and good atomization performance. Combustion on a compression ignition engine can completely eliminate soot emissions, effectively Reduce nitrogen oxide emissions and reduce noise. Due to the large output of diesel, it dominates the fuel consumption of compression ig...

Claims

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Application Information

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IPC IPC(8): F02M43/04
Inventor 李孝禄孙在徐立军陈红岩李运堂赵雪菲方晓敏
Owner CHINA JILIANG UNIV
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