CN113027653A - 500bar stainless steel gasoline high-pressure oil rail and machining process thereof - Google Patents
500bar stainless steel gasoline high-pressure oil rail and machining process thereof Download PDFInfo
- Publication number
- CN113027653A CN113027653A CN202110476708.4A CN202110476708A CN113027653A CN 113027653 A CN113027653 A CN 113027653A CN 202110476708 A CN202110476708 A CN 202110476708A CN 113027653 A CN113027653 A CN 113027653A
- Authority
- CN
- China
- Prior art keywords
- oil rail
- pressure oil
- pressure
- 500bar
- stainless steel
- Prior art date
- 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.)
- Pending
Links
- 229910001220 stainless steel Inorganic materials 0.000 title claims abstract description 26
- 239000010935 stainless steel Substances 0.000 title claims abstract description 26
- 238000003754 machining Methods 0.000 title claims abstract description 25
- 238000009434 installation Methods 0.000 claims abstract description 17
- 238000003466 welding Methods 0.000 claims abstract description 16
- 238000005553 drilling Methods 0.000 claims description 26
- 238000003801 milling Methods 0.000 claims description 21
- 238000000034 method Methods 0.000 claims description 12
- 238000009530 blood pressure measurement Methods 0.000 claims description 7
- 238000005498 polishing Methods 0.000 claims description 3
- 238000010079 rubber tapping Methods 0.000 claims description 3
- 239000000446 fuel Substances 0.000 claims description 2
- 238000007789 sealing Methods 0.000 abstract description 5
- 239000003921 oil Substances 0.000 description 77
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005242 forging Methods 0.000 description 3
- 238000005336 cracking Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000295 fuel oil Substances 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
Classifications
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/02—Conduits between injection pumps and injectors, e.g. conduits between pump and common-rail or conduits between common-rail and injectors
- F02M55/025—Common rails
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- 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
- F02M55/00—Fuel-injection apparatus characterised by their fuel conduits or their venting means; Arrangements of conduits between fuel tank and pump F02M37/00
- F02M55/004—Joints; Sealings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- General Engineering & Computer Science (AREA)
- Fuel-Injection Apparatus (AREA)
Abstract
The invention relates to a 500bar stainless steel gasoline high-pressure oil rail and a machining process thereof, wherein the high-pressure oil rail comprises a hollow oil rail body, a plurality of oil injector bases and a support base, wherein the oil injector bases and the support base are integrally formed on the oil rail body, the oil injector bases are communicated with an inner cavity of the oil rail body, one end of the high-pressure oil rail is provided with a pressure measuring joint, the pressure measuring joint is provided with a plug installation cavity, the diameter of the plug installation cavity is larger than that of the inner cavity of the high-pressure oil rail, a plug is installed in the plug installation cavity, and the plug is in interference press-mounting in the inner cavity of the high. According to the invention, the pressure measuring joint at one end of the high-pressure oil rail is provided with the plug installation cavity with the diameter larger than that of the inner cavity of the high-pressure oil rail, the plug is installed in the plug installation cavity, and the plug is pressed in the inner cavity of the high-pressure oil rail in an interference fit manner and sealed by laser welding, so that the pressure bearing performance is better, the effective sealing of the high-pressure oil rail can be realized, and the pressure of 500bar can be borne.
Description
Technical Field
The invention relates to the technical field of high-pressure oil rail manufacturing, in particular to a 500bar stainless steel gasoline high-pressure oil rail and a machining process thereof.
Background
The high-pressure oil rail is used for storing fuel oil, and simultaneously, pressure fluctuation generated by oil supply of the high-pressure pump and oil injection of the oil injector is restrained, so that the pressure stability of the system is ensured. At present, gasoline engine stainless steel high-pressure oil rails are all formed by assembling and welding parts, and with the gradual increase of the national requirements on automobile emission, various automobile manufacturers meet the emission requirements by reducing the discharge capacity and increasing the working pressure of an engine. With the increase of the working pressure of the engine, the working pressure of the fuel system of the engine is increased to 500bar domestically by the public group, namely EA888 EVO5 integral stainless steel forging machine adds the high-pressure oil rail. Most oil rail suppliers pursue the machining precision once and adopt a clamping machining mode for production, and the machining process causes excessive machining working hours and excessive equipment investment of single products, and meanwhile, the precision cannot be guaranteed when the internal and external threads are machined.
Patent CN108397324A discloses a petrol high pressure oil rail and processing technology thereof, and this high pressure oil rail includes cavity oil rail body, a plurality of injector seats and a support frame seat of integrated shaping setting on the oil rail body, the oil inlet is seted up to the one end of oil rail body, and the pressure measurement chamber that is used for installing oil pressure sensor is seted up to the other end, the injector seat communicates with the inside of oil rail body, and its highest operating pressure does not reach 500 bar's work demand, and the bearing capacity needs further enhancement. In addition, in the use process of the high-pressure oil rail, a pressure measuring end connector needs to be screwed into one end of the high-pressure oil rail, and then the high-pressure oil rail needs to be sealed by a plug, so that the problem that how to realize effective sealing under the pressure of 500bar needs to be solved is also solved.
Disclosure of Invention
The invention aims to solve the problems and provide a 500bar stainless steel gasoline high-pressure oil rail and a machining process thereof.
The purpose of the invention is realized by the following technical scheme:
the utility model provides a 500bar stainless steel petrol high pressure oil rail, this high pressure oil rail includes that cavity oil rail body, integrated into one piece set up a plurality of injector seats and a support frame on the oil rail body, injector seat with the inner chamber of oil rail body is linked together, the one end of high pressure oil rail is equipped with the pressure measurement and connects, the pressure measurement connects and is equipped with the diameter and is greater than the end cap installation cavity of high pressure oil rail inner chamber, install the end cap in the end cap installation cavity, the end cap interference pressure equipment is in high pressure oil rail inner chamber to it is sealed through laser welding.
According to the invention, the pressure measuring joint at one end of the high-pressure oil rail is provided with the plug installation cavity with the diameter larger than that of the inner cavity of the high-pressure oil rail, the plug is installed in the plug installation cavity, and the plug is pressed in the inner cavity of the high-pressure oil rail in an interference fit manner and sealed by laser welding, so that the pressure bearing performance is better, the effective sealing of the high-pressure oil rail can be realized, and the pressure of 500bar can be borne.
Furthermore, the number of the injector seats is 4, the number of the bracket seats is two, one of the bracket seats is arranged between the first injector seat and the second injector seat, and the other bracket seat is arranged between the third injector seat and the fourth injector seat.
Furthermore, an oil outlet channel is formed in the middle of the oil injector seat and comprises an upper channel and a lower channel, the upper channel is communicated with an inner cavity of the oil rail body, and the diameter of the lower channel is larger than that of the upper channel.
Furthermore, chamfers are arranged at two ends of the oil rail body.
Furthermore, the high-pressure oil rail is made of stainless steel.
A machining process for a 500bar stainless steel gasoline high-pressure oil rail comprises the following steps:
(1) processing a reference surface, namely processing a reference surface and a reference hole of a subsequent process by taking the appearance of the oil rail blank as a reference;
(2) deep hole machining;
(3) processing an oil injector seat and a bracket joint;
(4) deburring;
(5) and (5) welding the plug, wherein the plug is connected with the rail body through laser welding.
And further, the step (1) of processing the reference surface comprises the steps of milling a large head end plane, chamfering a plug counter bore and chamfering an outer angle, milling upper and lower planes of the support and drilling a support hole.
Further, the deep hole processing of the step (2) is to drill a deep hole with 12.5 mm.
Further, the step (3) of processing the oil injector seat and the bracket joint comprises the following steps:
milling oil sprayer seat plane and drilling
Drilling, boring
Drilling and milling
Is perforated to
Milling pressure measuring joint plane, drilling
Drilling, boring
Tapping M10mm internal threads;
milling and drilling oil inlet joint plane
Drilling, boring
And (4) milling the M14mm external threads and the internal conical surfaces to the size.
Further, the deburring processing in the step (4) comprises the following steps: removing burrs on the outer surface of the oil rail by adopting a polishing wheel; and (5) removing burrs of the crossed holes on the inner surface by using abrasive flow.
According to the invention, the pressure measuring joint at one end of the high-pressure oil rail is provided with the plug installation cavity with the diameter larger than that of the inner cavity of the high-pressure oil rail, the plug is installed in the plug installation cavity, and the plug is pressed in the inner cavity of the high-pressure oil rail in an interference fit manner and sealed by laser welding, so that the pressure bearing performance is better, the effective sealing of the high-pressure oil rail can be realized, and the pressure of 500bar can be borne.
According to the preparation process of the high-pressure oil rail, the appearance of the oil rail forging stock is used as a reference to process the reference surface and the reference hole of the subsequent working procedure, so that the accumulated error generated in each working procedure is avoided, burrs on the inner surface and the outer surface are removed to reduce the stress cracking probability of the orifice, and the plug is connected with the rail body through laser welding.
Drawings
FIG. 1 is a schematic structural view of a stainless steel gasoline high pressure oil rail according to the present invention;
FIG. 2 is a flow chart of a process for manufacturing a stainless steel gasoline high pressure oil rail according to the present invention;
FIG. 3 is a side view, a front view and a top view of a rail blank;
FIG. 4 is a side, front and top view of a datum plane machining process;
FIG. 5 is a side, front and top view of a deep hole drilling process;
FIG. 6 is a side, front, and top view of an injector seat and bracket manufacturing process.
Detailed Description
The invention is described in detail below with reference to the figures and specific embodiments.
Referring to fig. 1, a 500bar stainless steel gasoline high pressure oil rail is made of stainless steel. This high pressure oil rail includes cavity oil rail body 1, the integrated into one piece sets up a plurality of injector seats 3 and support frame 4 on the oil rail body 1, injector seat 3 with the inner chamber 2 of oil rail body 1 is linked together, the one end of high pressure oil rail 1 is equipped with the pressure measurement and connects, the pressure measurement connects and is equipped with the diameter and is greater than the end cap installation cavity 5 of high pressure oil rail inner chamber, install end cap 6 in the end cap installation cavity 5, 6 interference pressure equipment of end cap is in the high pressure oil rail inner chamber to it is sealed through laser welding.
According to the invention, the pressure measuring joint at one end of the high-pressure oil rail 1 is provided with the plug installation cavity 5 with the diameter larger than that of the inner cavity 2 of the high-pressure oil rail, the plug 6 is installed in the plug installation cavity 5, and the plug 6 is pressed in the inner cavity 1 of the high-pressure oil rail in an interference fit manner and sealed by laser welding, so that the pressure bearing performance is better, the effective sealing of the high-pressure oil rail can be realized, and the pressure of 500bar can be borne.
Specifically, the number of the injector seats is 4, the number of the support seats 4 is two, one of the support seats is arranged between a first injector seat and a second injector seat, and the other support seat is arranged between a third injector seat and a fourth injector seat. The oil sprayer is characterized in that an oil outlet channel is formed in the middle of the oil sprayer seat and comprises an upper channel and a lower channel, the upper channel is communicated with an inner cavity of the oil rail body, and the diameter of the lower channel is larger than that of the upper channel. And chamfers are arranged at two ends of the oil rail body.
A machining process for a 500bar stainless steel gasoline high pressure rail, as shown in fig. 2, comprising the steps of:
(1) and (4) processing a reference surface, as shown in fig. 3 and 4, processing the reference surface and the reference hole of the subsequent process by taking the appearance of the oil rail blank as a reference, wherein the processing comprises the steps of milling a large head end plane, a plug counter bore and an external chamfer, milling the upper plane and the lower plane of the support, and drilling a support hole.
(2) Deep hole machining, namely drilling a deep hole of 12.5mm as shown in FIG. 5;
(3) as shown in fig. 6, the machining of the injector seat and the bracket joint comprises the following steps:
milling oil sprayer seat plane and drilling
Drilling, boring
Drilling and milling
Is perforated to
Milling pressure measuring joint plane, drilling
Drilling, boring
Tapping M10mm internal threads;
milling and drilling oil inlet joint plane
Drilling, boring
And (4) milling the M14mm external threads and the internal conical surfaces to the size.
(4) Deburring, namely deburring the outer surface of the oil rail by using a polishing wheel; and (5) removing burrs of the crossed holes on the inner surface by using abrasive flow.
(5) And (5) welding the plug, wherein the plug is connected with the rail body through laser welding.
According to the preparation process of the high-pressure oil rail, the appearance of the oil rail forging stock is used as a reference to process the reference surface and the reference hole of the subsequent working procedure, so that the accumulated error generated in each working procedure is avoided, burrs on the inner surface and the outer surface are removed to reduce the stress cracking probability of the orifice, and the plug is connected with the rail body through laser welding.
The embodiments described above are described to facilitate an understanding and use of the invention by those skilled in the art. It will be readily apparent to those skilled in the art that various modifications to these embodiments may be made, and the generic principles described herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present invention is not limited to the above embodiments, and those skilled in the art should make improvements and modifications within the scope of the present invention based on the disclosure of the present invention.
Claims (10)
1. The utility model provides a 500bar stainless steel petrol high pressure oil rail, this high pressure oil rail includes that cavity oil rail body, integrated into one piece set up a plurality of injector seats and a support frame on the oil rail body, injector seat with the inner chamber of oil rail body is linked together, its characterized in that, the one end of high pressure oil rail is equipped with the pressure measurement and connects, the pressure measurement connects and is equipped with the diameter and is greater than the end cap installation cavity of high pressure oil rail inner chamber, the end cap is installed to the end cap installation intracavity, end cap interference pressure equipment is in the high pressure oil rail inner chamber to it is sealed through laser welding.
2. A high pressure fuel rail for 500bar stainless steel gasoline as claimed in claim 1 wherein the number of injector seats is 4 and the number of bracket seats is two, one of the bracket seats being disposed between a first injector seat and a second injector seat and the other bracket seat being disposed between a third injector seat and a fourth injector seat.
3. The high-pressure oil rail for 500bar stainless steel gasoline as defined in claim 1, wherein an oil outlet channel is formed in the middle of the oil injector seat, the oil outlet channel comprises an upper channel and a lower channel, the upper channel is communicated with the inner cavity of the oil rail body, and the diameter of the lower channel is greater than that of the upper channel.
4. The high-pressure oil rail for 500bar stainless steel gasoline as claimed in claim 1, wherein the two ends of the oil rail body are provided with chamfers.
5. The 500bar stainless steel gasoline high-pressure oil rail as claimed in claim 1, wherein the high-pressure oil rail is made of stainless steel.
6. The machining process for the 500bar stainless steel gasoline high-pressure oil rail as claimed in claim 1, characterized by comprising the following steps:
(1) processing a reference surface, namely processing a reference surface and a reference hole of a subsequent process by taking the appearance of the oil rail blank as a reference;
(2) deep hole machining;
(3) processing an oil injector seat and a bracket joint;
(4) deburring;
(5) and (5) welding the plug, wherein the plug is connected with the rail body through laser welding.
7. The machining process for the 500bar stainless steel gasoline high-pressure oil rail as claimed in claim 6, wherein the step (1) of machining the reference surface comprises milling a large head end plane, chamfering a plug counter bore and an outer angle, milling upper and lower planes of a support and drilling a support hole.
8. The machining process for the 500bar stainless steel gasoline high-pressure oil rail is characterized in that the deep hole machining in the step (2) is to drill a deep hole of 12.5 mm.
9. The machining process for the 500bar stainless steel gasoline high-pressure oil rail as claimed in claim 6, wherein the step (3) of machining the oil injector seat and the bracket joint comprises the following steps of:
milling oil sprayer seat plane and drilling
Drilling, boring
Drilling and milling
Is perforated to
Milling pressure measuring joint plane, drilling
Drilling, boring
Tapping M10mm internal threads;
milling and drilling oil inlet joint plane
Drilling, boring
And (4) milling the M14mm external threads and the internal conical surfaces to the size.
10. The machining process for the 500bar stainless steel gasoline high-pressure oil rail as claimed in claim 6, wherein the deburring machining in the step (4) comprises the following steps: removing burrs on the outer surface of the oil rail by adopting a polishing wheel; and (5) removing burrs of the crossed holes on the inner surface by using abrasive flow.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476708.4A CN113027653A (en) | 2021-04-29 | 2021-04-29 | 500bar stainless steel gasoline high-pressure oil rail and machining process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110476708.4A CN113027653A (en) | 2021-04-29 | 2021-04-29 | 500bar stainless steel gasoline high-pressure oil rail and machining process thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113027653A true CN113027653A (en) | 2021-06-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110476708.4A Pending CN113027653A (en) | 2021-04-29 | 2021-04-29 | 500bar stainless steel gasoline high-pressure oil rail and machining process thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033591A (en) * | 2021-11-16 | 2022-02-11 | 苏州星波动力科技有限公司 | Aluminum alloy oil rail, forming method and manufacturing method thereof, engine and automobile |
| CN114060191A (en) * | 2021-11-16 | 2022-02-18 | 苏州星波动力科技有限公司 | Aluminum alloy oil rail, hole sealing method and manufacturing method thereof, engine and automobile |
| CN114396349A (en) * | 2021-12-28 | 2022-04-26 | 无锡鹰贝精密液压有限公司 | Low-pressure oil rail connecting piece and production process thereof |
| CN114986091A (en) * | 2022-05-20 | 2022-09-02 | 上海云明汽车部件有限公司 | Fuel oil common rail manufacturing process and equipment |
| CN114986090A (en) * | 2022-05-20 | 2022-09-02 | 上海云明汽车部件有限公司 | Manufacturing process and manufacturing equipment for fuel common rail pipe |
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| WO2010001810A1 (en) * | 2008-06-30 | 2010-01-07 | 臼井国際産業株式会社 | Fuel rail for high-pressure direct injection internal combustion engine and method of manufacturing the same |
| CN203285591U (en) * | 2013-04-30 | 2013-11-13 | 成都威特电喷有限责任公司 | Gasoline direct injection fuel machine high pressure fuel rail |
| CN104863769A (en) * | 2015-05-28 | 2015-08-26 | 上海臼井发动机零部件有限公司 | Gasoline direct injection high-pressure fuel distribution pipe manufacturing method |
| CN212898756U (en) * | 2020-06-12 | 2021-04-06 | 上海威克迈龙川汽车发动机零件有限公司 | Positioning sealing device for preventing ball head from being scratched and engine |
| CN214698134U (en) * | 2021-04-29 | 2021-11-12 | 上海众源燃油分配器制造有限公司 | 500bar stainless steel gasoline high pressure oil rail |
-
2021
- 2021-04-29 CN CN202110476708.4A patent/CN113027653A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2010001810A1 (en) * | 2008-06-30 | 2010-01-07 | 臼井国際産業株式会社 | Fuel rail for high-pressure direct injection internal combustion engine and method of manufacturing the same |
| CN203285591U (en) * | 2013-04-30 | 2013-11-13 | 成都威特电喷有限责任公司 | Gasoline direct injection fuel machine high pressure fuel rail |
| CN104863769A (en) * | 2015-05-28 | 2015-08-26 | 上海臼井发动机零部件有限公司 | Gasoline direct injection high-pressure fuel distribution pipe manufacturing method |
| CN212898756U (en) * | 2020-06-12 | 2021-04-06 | 上海威克迈龙川汽车发动机零件有限公司 | Positioning sealing device for preventing ball head from being scratched and engine |
| CN214698134U (en) * | 2021-04-29 | 2021-11-12 | 上海众源燃油分配器制造有限公司 | 500bar stainless steel gasoline high pressure oil rail |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114033591A (en) * | 2021-11-16 | 2022-02-11 | 苏州星波动力科技有限公司 | Aluminum alloy oil rail, forming method and manufacturing method thereof, engine and automobile |
| CN114060191A (en) * | 2021-11-16 | 2022-02-18 | 苏州星波动力科技有限公司 | Aluminum alloy oil rail, hole sealing method and manufacturing method thereof, engine and automobile |
| CN114396349A (en) * | 2021-12-28 | 2022-04-26 | 无锡鹰贝精密液压有限公司 | Low-pressure oil rail connecting piece and production process thereof |
| CN114986091A (en) * | 2022-05-20 | 2022-09-02 | 上海云明汽车部件有限公司 | Fuel oil common rail manufacturing process and equipment |
| CN114986090A (en) * | 2022-05-20 | 2022-09-02 | 上海云明汽车部件有限公司 | Manufacturing process and manufacturing equipment for fuel common rail pipe |
| CN114986091B (en) * | 2022-05-20 | 2023-09-15 | 上海云明汽车部件有限公司 | Process and equipment for manufacturing fuel common rail |
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