CN113818978A - Composite forming fuel nozzle - Google Patents
Composite forming fuel nozzle Download PDFInfo
- Publication number
- CN113818978A CN113818978A CN202111073780.9A CN202111073780A CN113818978A CN 113818978 A CN113818978 A CN 113818978A CN 202111073780 A CN202111073780 A CN 202111073780A CN 113818978 A CN113818978 A CN 113818978A
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- China
- Prior art keywords
- shaft section
- oil
- nozzle
- diameter shaft
- diameter
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
- B22F5/10—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product of articles with cavities or holes, not otherwise provided for in the preceding subgroups
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y80/00—Products made by additive manufacturing
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C24/00—Coating starting from inorganic powder
- C23C24/08—Coating starting from inorganic powder by application of heat or pressure and heat
- C23C24/10—Coating starting from inorganic powder by application of heat or pressure and heat with intermediate formation of a liquid phase in the layer
- C23C24/103—Coating with metallic material, i.e. metals or metal alloys, optionally comprising hard particles, e.g. oxides, carbides or nitrides
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
- F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
- F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
- F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
Abstract
The invention relates to a composite forming fuel nozzle which is composed of a nozzle main body made of a first alloy material and processed by a 3D printing device and an anti-corrosion layer made of a second alloy material and fused and formed on the outer side of the lower part of the nozzle main body by a laser cladding device.
Description
Technical Field
The invention relates to a fuel nozzle, in particular to a composite forming fuel nozzle fused by laser cladding equipment, belonging to the technical field of laser processing.
Background
The fuel nozzle that boats and ships used at present, it is higher to require, both needs to have certain intensity, and the corrosion resistance is good again, and the nozzle of traditional machining manufacturing usually, intensity is higher, but the corrosion resistance is relatively poor, often appears the surface by liquid corrosion phenomenon in the use to cause the part inefficacy.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the technical problem to be solved by the present invention is to provide a composite fuel nozzle, which can reduce the service temperature of the nozzle body, ensure the rigidity and strength of the nozzle body, and greatly enhance the corrosion resistance of the small-diameter shaft section of the nozzle body, thereby greatly improving the service life of the composite fuel nozzle.
In order to solve the above technical problem, the present invention provides a composite fuel nozzle, comprising:
the nozzle body is of a stepped shaft structure and is made of a first alloy material and processed by 3D printing equipment, the nozzle body sequentially comprises a small-diameter shaft section, a middle shaft section and a large-diameter shaft section along the axial direction of the nozzle body, a fuel oil flow channel extending from the small-diameter shaft section to the large-diameter shaft section and a plurality of cooling flow channels distributed at the periphery of the fuel oil flow channel are arranged in the nozzle body, one end of the fuel oil flow channel is in a closed state, the other end of the fuel oil flow channel penetrates through the end face of the large-diameter shaft section, two ends of each cooling flow channel in the extending direction are respectively provided with a refrigerant inlet and a refrigerant outlet, and the refrigerant inlet and the refrigerant outlet are both formed in the end face of the large-diameter shaft section;
the anti-corrosion layer is made of a second alloy material and is fused and molded on the small-diameter shaft section through laser cladding equipment to form a sleeve-shaped structure with an opening on one side, and an oil nozzle is formed in the anti-corrosion layer and penetrates through a fuel oil flow passage in the small-diameter shaft section.
Preferably, the second alloy material is a nickel-based wrought superalloy. The first alloy material is a steel material. The age hardening die steel has low carbon content, and the steel material is required to be subjected to a vacuum atomization process to reduce the gas content in impurities and segregation so as to ensure that the steel has good toughness and fatigue resistance. The heat resistance is required to reach the working temperature of the nozzle of more than 650 ℃, and the corrosion resistance is not required for a while.
Preferably, the fuel oil flow passage comprises a large-diameter oil cavity part, a transition oil cavity part and a small-diameter oil cavity part in sequence along the extending direction of the fuel oil flow passage.
Preferably, the cooling flow channel is U-shaped, the cooling flow channel includes two curved extensions and a conduction portion communicating the two curved extensions, and a cross section of the curved extension gradually increases from the small-diameter shaft section to the large-diameter shaft section.
Preferably, the cooling flow passage extends in a winding manner along the shape of the fuel flow passage.
Preferably, the difference between the radius of the intermediate shaft section and the radius of the small-diameter shaft section is equal to the thickness of the corrosion resistant layer.
Preferably, the number of the oil injection ports is multiple.
Preferably, the extension direction of the oil jet is deviated from the radial direction of the nozzle body, thereby matching the diesel oil flow direction inside the nozzle body. Since the nozzle itself is an axisymmetric pattern (centrosymmetric pattern), if the nozzle main body position is used as a reference point, the oil injection port can be arranged at one end of the nozzle main body facing the reference point or one side far away from the reference point.
Preferably, all the cooling channels are circumferentially and uniformly distributed by taking the axis of the nozzle body as a circle center, and all the refrigerant inlets and all the refrigerant outlets are located on the same circle and are distributed in a staggered manner.
As mentioned above, the composite forming fuel nozzle has the following beneficial effects: in the invention, the nozzle main body is made of a first alloy material and is processed by a printing device, the anti-corrosion layer is made of a second alloy material and is fused and formed on the small-diameter shaft section by a laser cladding device to form a sleeve-shaped structure with an opening on one side, so that the rigidity and the strength of the nozzle main body can be ensured and the corrosion resistance of the small-diameter shaft section of the nozzle main body can be greatly enhanced by a composite manufacturing mode combining a metal printing technology and a laser cladding technology, thereby prolonging the service life of the composite formed fuel nozzle. In addition, a plurality of cooling runner form in the nozzle main part and distribute in fuel flow way periphery department, and the both ends on every cooling runner extending direction are refrigerant inlet and refrigerant export respectively, and refrigerant inlet and refrigerant export are all seted up in the terminal surface department of major diameter shaft section, can reduce the service temperature of nozzle main part like this, play thermal-insulated or radiating effect, have further improved the life of compound shaping fuel nozzle. Therefore, the composite forming fuel nozzle can reduce the service temperature of the nozzle main body, ensure the rigidity and the strength of the nozzle main body, and greatly enhance the corrosion resistance of the small-diameter shaft section of the nozzle main body, thereby greatly prolonging the service life of the composite forming fuel nozzle.
Drawings
The invention will be further described with reference to the accompanying drawings.
FIG. 1 is a perspective view of a fuel injector of the present invention.
Fig. 2 is a cross-sectional view of a fuel injector of the present invention.
FIG. 3 is a schematic view of the structure of the nozzle body according to the present invention.
FIG. 4 is a schematic view of the structure of the corrosion resistant layer of the present invention.
Description of the drawings: 1-nozzle main body, 11-small diameter shaft section, 12-middle shaft end, 13-large diameter shaft section, 14-fuel flow channel, 141-large diameter oil cavity section, 142-transition oil cavity section, 143-small diameter oil cavity section, 15-cooling flow channel, 151-refrigerant inlet, 152-refrigerant outlet, 153-bending extension part, 154-conduction part, 2-anti-corrosion layer and 21-nozzle opening.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like shown in the drawings are only used for matching the disclosure of the present disclosure, and are not used for limiting the conditions that the present disclosure can be implemented, so that the present disclosure is not limited to the technical essence, and any structural modifications, ratio changes, or size adjustments should still fall within the scope of the present disclosure without affecting the efficacy and the achievable purpose of the present disclosure. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
As shown in fig. 1, 2, 3 and 4, the present invention provides a composite fuel nozzle, including:
the nozzle body 1 is of a stepped shaft structure, the nozzle body 1 is made of a first alloy material and is processed by 3D printing equipment, the nozzle body 1 sequentially comprises a small-diameter shaft section 11, a middle shaft section 12 and a large-diameter shaft section 13 along the axial direction of the nozzle body 1, a fuel oil flow channel 14 extending from the small-diameter shaft section 11 to the large-diameter shaft section 13 and a plurality of cooling flow channels 15 distributed on the periphery of the fuel oil flow channel 14 are arranged in the nozzle body 1, one end of the fuel oil flow channel 14 is in a closed state, the other end of the fuel oil flow channel is communicated with the end face of the large-diameter shaft section 13, two ends of each cooling flow channel 15 in the extending direction are respectively provided with a refrigerant inlet 151 and a refrigerant outlet 152, and the refrigerant inlet 151 and the refrigerant outlet 152 are both arranged on the end face of the large-diameter shaft section 13;
the anti-corrosion layer 2 is made of a second alloy material and is fused and molded on the small-diameter shaft section 11 through laser cladding equipment to form a sleeve-shaped structure with an opening on one side, an oil injection port 21 is formed in the anti-corrosion layer 2, and the oil injection port 21 penetrates through the fuel oil flow channel 14 in the small-diameter shaft section 11.
In the invention, the nozzle body 1 is made of a first alloy material and is processed by a 3D printing device, and the anti-corrosion layer 2 is made of a second alloy material and is fused and formed on the small-diameter shaft section 11 by a laser cladding device to form a sleeve-shaped structure with a single-side opening, so that the rigidity of the nozzle body 1 can be ensured and the corrosion resistance of the small-diameter shaft section 11 of the nozzle body 1 can be greatly enhanced by a composite manufacturing mode combining a metal 3D printing technology and a laser cladding technology, thereby prolonging the service life of the composite formed fuel nozzle. In addition, a plurality of cooling channels 15 are formed in the nozzle body 1 and distributed at the periphery of the fuel oil channel 14, two ends of each cooling channel 15 in the extending direction are respectively provided with a refrigerant inlet 151 and a refrigerant outlet 152, and the refrigerant inlet 151 and the refrigerant outlet 152 are both arranged at the end face of the large-diameter shaft section 13, so that the service temperature of the nozzle body 1 can be reduced, the heat insulation or heat dissipation effect is achieved, and the service life of the composite forming fuel oil nozzle is further prolonged.
The second alloy material is a nickel-based wrought superalloy, and specifically, the nickel-based wrought superalloy is a solid-solution strengthened nickel-based wrought superalloy (Inconel 625) which uses molybdenum and niobium as main strengthening elements.
In order to improve the rigidity of the nozzle body 1, the first alloy material is a steel material.
The fuel flow path 14 includes a large-diameter oil chamber portion 141, a transition oil chamber portion 142, and a small-diameter oil chamber portion 143 in this order in the extending direction thereof.
In order to enhance the cooling effect of the cooling flow passage 15, the cooling flow passage 15 is U-shaped, the cooling flow passage 15 includes two curved extensions 153 and a conduction portion 154 connecting the two curved extensions 153, and the cross section of the curved extension 153 gradually increases from the small-diameter shaft section 11 to the large-diameter shaft section 13.
In order to enhance the cooling effect of the cooling flow passage 15, the cooling flow passage 15 extends while being detoured along the shape of the fuel flow passage 14.
In order to smooth the outer peripheral wall of the composite fuel nozzle, the difference between the radius of the intermediate shaft section 12 and the radius of the small-diameter shaft section 11 is equal to the thickness of the anti-corrosion layer 2.
The number of the oil jet ports 21 is plural.
The extending direction of the fuel injection port 21 is deviated from the radial direction of the nozzle body 1 in order to deviate the injection direction of the fuel from the radial direction of the nozzle body 1.
In order to make the cooling effect of the cooling channels 15 more uniform, all the cooling channels 15 are circumferentially and uniformly distributed around the axis of the nozzle body 1, and all the refrigerant inlets 151 and all the refrigerant outlets 152 are located on the same circle and are distributed in a staggered manner.
In conclusion, the composite forming fuel nozzle can reduce the service temperature of the nozzle main body, ensure the rigidity and the strength of the nozzle main body, and greatly enhance the corrosion resistance of the small-diameter shaft section of the nozzle main body, thereby greatly prolonging the service life of the composite forming fuel nozzle. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The foregoing embodiments are merely illustrative of the principles and utilities of the present invention and are not intended to limit the invention. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which can be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.
Claims (10)
1. A composite fuel nozzle comprising: a nozzle main body (1) made of a first alloy material and processed by a 3D printing device, and an anti-corrosion layer (2) coated on the outer side of the lower part of the nozzle main body (1),
the nozzle main body (1) is of a stepped axisymmetric structure and sequentially comprises a small-diameter shaft section (11), a middle shaft section (12) and a large-diameter shaft section (13) along the axial direction of the nozzle main body, and the small-diameter shaft section, the middle shaft section and the large-diameter shaft section are connected into a whole; a fuel oil flow channel (14) extending from the small-diameter shaft section (11) to the large-diameter shaft section (13) and a plurality of cooling flow channels (15) distributed at the periphery of the fuel oil flow channel (14) are further arranged in the nozzle main body (1), one end of the fuel oil flow channel (14) is in a closed state, and the other end of the fuel oil flow channel (14) penetrates from the small-diameter shaft section (11) to the end face of the large-diameter shaft section (13); two ends of each cooling flow channel (15) in the extension direction are respectively provided with a refrigerant inlet (151) and a refrigerant outlet (152), and the refrigerant inlet (151) and the refrigerant outlet (152) are arranged at the end surface of the large-diameter shaft section (13);
the anti-corrosion layer (2) is connected with the combustion chamber, is made of a second alloy material and is fused and molded on the outer side of the small-diameter shaft section (11) through laser cladding equipment to form a sleeve-shaped structure with an opening on one side, and the distance between the end face of the anti-corrosion layer and the small-diameter shaft section (11) is 2 mm; the anti-corrosion oil jet structure is characterized in that a plurality of oil nozzles (21) are formed in the anti-corrosion layer (2), and the oil nozzles (21) penetrate through the anti-corrosion layer (2) and then are communicated to a fuel oil flow passage (14) in the small-diameter shaft section (11).
2. The composite fuel nozzle as set forth in claim 1, wherein: the first alloy material is a steel material with heat resistance reaching the working temperature of the nozzle above 650 ℃, and the second alloy material is a nickel-based wrought superalloy.
3. The composite fuel nozzle as set forth in claim 1, wherein: the outer diameter of the large-diameter shaft section is 24mm, the outer diameter of the middle shaft end is 15.5mm, and the outer diameter of the small-diameter shaft section is 11.5 mm; the internal diameter of the large-diameter shaft section is 16mm, the internal diameter of the middle shaft end is 8mm, and the internal diameter of the small-diameter shaft section is 7 mm.
4. The composite fuel nozzle as set forth in claim 1, wherein: the fuel oil flow channel (14) sequentially comprises a large-diameter oil cavity part (141), a transition oil cavity part (142) and a small-diameter oil cavity part (143) along the extending direction of the fuel oil flow channel, and fuel oil sucked by the (what parts) sequentially flows through the large-diameter oil cavity part (141), the transition oil cavity part (142) and the small-diameter oil cavity part (143) and is discharged from an oil injection port.
5. The composite fuel nozzle as set forth in claim 1, wherein: the cooling flow channel (15) is U-shaped, the cooling flow channel (15) is composed of two bending extension parts (153) symmetrically arranged in the inner wall of the nozzle main body (1) and a conduction part (154) communicated with the two bending extension parts (153), the cross section of each bending extension part (153) is gradually enlarged from the small-diameter shaft section (11) to the large-diameter shaft section (13), and the conduction part (154) is located above the oil nozzle and does not interfere with the oil nozzle.
6. The composite fuel nozzle as set forth in claim 1, wherein: the cooling flow channel (15) extends in a winding manner along the shape of the fuel flow channel (14).
7. The composite fuel nozzle as set forth in claim 1, wherein: the difference between the radius of the middle shaft section (12) and the radius of the small-diameter shaft section (11) is equal to the thickness of the anti-corrosion layer (2).
8. The composite fuel nozzle as set forth in claim 1, wherein: the number of the oil injection ports (21) is at least 4, and the oil injection ports are not on different horizontal lines respectively; each oil nozzle is distributed in an external spiral shape, the included angle between the oil nozzles and the X direction is increased in a 4-46-degree nonlinear mode, the included angle between the oil nozzles and the Y direction is decreased in a 30-12-degree nonlinear mode, and the included angle between the oil nozzles and the Z direction is 60 degrees.
9. The composite fuel nozzle as set forth in claim 1, wherein: the extending direction of the oil injection port (21) deviates from the radial direction of the nozzle main body (1), thereby matching the diesel oil flowing direction in the nozzle main body.
10. The composite fuel nozzle as set forth in claim 1, wherein: all the cooling flow passages (15) are uniformly distributed in the circumferential direction by taking the axis of the nozzle main body (1) as a circle center line, and all the refrigerant inlets (151) and all the refrigerant outlets (152) are circumferentially distributed along the end surface of the large-diameter shaft section and are positioned on the same horizontal plane in a staggered manner; the shapes of the refrigerant inlets (151) and the refrigerant outlets (152) are consistent, and the refrigerant outlet is of an oblong hole structure with better overall heat dissipation performance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073780.9A CN113818978A (en) | 2021-09-14 | 2021-09-14 | Composite forming fuel nozzle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111073780.9A CN113818978A (en) | 2021-09-14 | 2021-09-14 | Composite forming fuel nozzle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113818978A true CN113818978A (en) | 2021-12-21 |
Family
ID=78914526
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111073780.9A Pending CN113818978A (en) | 2021-09-14 | 2021-09-14 | Composite forming fuel nozzle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113818978A (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1691995A (en) * | 2002-10-07 | 2005-11-02 | 曼B与W狄赛尔公司 | Method of manufacturing a nozzle for a fuel valve in a diesel engine, and a nozzle |
| JP2007162547A (en) * | 2005-12-13 | 2007-06-28 | Mitsubishi Heavy Ind Ltd | Liquid-cooled fuel injection valve |
| CN102472224A (en) * | 2009-06-30 | 2012-05-23 | 日本活塞环株式会社 | Fuel injection nozzle for internal combustion engine, nozzle blank and manufacturing method thereof |
| CN102667135A (en) * | 2009-10-30 | 2012-09-12 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | A nozzle for a fuel valve in a diesel engine |
| WO2017029076A1 (en) * | 2015-08-20 | 2017-02-23 | Robert Bosch Gmbh | Fuel injector |
| CN109072834A (en) * | 2016-04-21 | 2018-12-21 | 罗伯特·博世有限公司 | Fuel injector |
| CN110565042A (en) * | 2019-07-09 | 2019-12-13 | 扬州安泰威合金硬面科技有限公司 | Method for preparing nickel-based alloy powder coating by applying laser cladding technology |
| CN110905704A (en) * | 2018-09-18 | 2020-03-24 | 福特全球技术公司 | Diesel injector and method of manufacturing a diesel injector |
-
2021
- 2021-09-14 CN CN202111073780.9A patent/CN113818978A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1691995A (en) * | 2002-10-07 | 2005-11-02 | 曼B与W狄赛尔公司 | Method of manufacturing a nozzle for a fuel valve in a diesel engine, and a nozzle |
| JP2007162547A (en) * | 2005-12-13 | 2007-06-28 | Mitsubishi Heavy Ind Ltd | Liquid-cooled fuel injection valve |
| CN102472224A (en) * | 2009-06-30 | 2012-05-23 | 日本活塞环株式会社 | Fuel injection nozzle for internal combustion engine, nozzle blank and manufacturing method thereof |
| CN102667135A (en) * | 2009-10-30 | 2012-09-12 | 曼恩柴油机涡轮股份公司曼恩柴油机涡轮德国分公司 | A nozzle for a fuel valve in a diesel engine |
| WO2017029076A1 (en) * | 2015-08-20 | 2017-02-23 | Robert Bosch Gmbh | Fuel injector |
| CN109072834A (en) * | 2016-04-21 | 2018-12-21 | 罗伯特·博世有限公司 | Fuel injector |
| CN110905704A (en) * | 2018-09-18 | 2020-03-24 | 福特全球技术公司 | Diesel injector and method of manufacturing a diesel injector |
| CN110565042A (en) * | 2019-07-09 | 2019-12-13 | 扬州安泰威合金硬面科技有限公司 | Method for preparing nickel-based alloy powder coating by applying laser cladding technology |
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Application publication date: 20211221 |