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Manufacturing technology for diesel engine oil injector and nozzle

A technology for diesel engines and manufacturing processes, applied in engine components, machines/engines, additive manufacturing, etc., can solve problems such as sales restrictions and expensive equipment, and achieve the effects of mature brazing process, controllable quality, and cost reduction

Inactive Publication Date: 2020-02-21
CHANGAN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

BOSCH and SIMENSAG in Germany both use special micro-EDM machine tools with independent patented technology to process the reverse taper hole of the nozzle. The equipment is expensive and there are sales restrictions.

Method used

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  • Manufacturing technology for diesel engine oil injector and nozzle
  • Manufacturing technology for diesel engine oil injector and nozzle
  • Manufacturing technology for diesel engine oil injector and nozzle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0035] The manufacturing process of the diesel fuel injector in this embodiment is carried out using metal 3D printing equipment, abrasive flow equipment and brazing equipment.

[0036] Including the following steps:

[0037] Step 1. Use metal 3D printing equipment to complete the processing of the injector nozzle head 1-1 and the 2 mm nozzle stem 1-2. The key is to process the inverted cone hole 2 on the nozzle 1, such as Figure 1 ~ Figure 3 shown. A layer of metal powder with a designed thickness is evenly spread on the powder bed, and under the action of the laser beam with a designed route, the metal powder melts and sticks together. By changing the laser injection route when melting each layer of metal powder, the processing of the reverse taper hole 2 can be completed, which makes up for the shortcomings of the processing method. In addition, only the nozzle part is manufactured using metal 3D printing technology, such as image 3 As shown, the part requiring 3D print...

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Abstract

The invention discloses a manufacturing technology for a diesel engine oil injector and a nozzle. When the nozzle is manufactured, the nozzle of the diesel engine oil injector is machined through 3D printing firstly, and then the surface smoothness of the inner surface of an inverted conical hole formed in the nozzle is improved through an abrasive particle flow technology; and when the diesel engine oil injector is manufactured, the nozzle is connected to an oil injector body through a brazing technology. According to the manufacturing technology for the diesel engine oil injector and the nozzle, the defects in a traditional technology are overcome through an additive manufacturing technology, therefore, the manufacturing technology difficulty of the oil injector can be reduced, the production equipment cost can be reduced, and oil injector industry progress can be promoted.

Description

technical field [0001] The invention relates to the technical field of manufacturing diesel engine fuel injectors, in particular to a manufacturing process of diesel engine fuel injectors and nozzles. Background technique [0002] The survey found that the domestic auto engine injector market is almost monopolized by foreign products, and the high-pressure common rail diesel engines of large domestic independent brand automakers are mainly equipped with injectors imported from foreign companies, such as the Aowei engine produced by FAW Xichai, The truck engines produced by Second Automobile Commercial Engine Co., Ltd., the truck engines produced by Weichai Power, and the E and R series truck and bus engines of Shanghai Diesel Engine Co., Ltd. all use the high-pressure common rail system and fuel injectors provided by German BOSCH. In addition, domestic engine manufacturers often choose fuel injectors from DENSO Corporation of Japan and Delphi Corporation of the United States...

Claims

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Application Information

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IPC IPC(8): B22F3/105B22F5/00B33Y10/00B33Y80/00F02M61/18
CPCB22F5/008B33Y80/00B33Y10/00F02M61/18B22F10/00B22F10/66B22F10/28Y02P10/25B22F12/00
Inventor 赵伟程琳源赵家熠姚禹轩陈昊
Owner CHANGAN UNIV