CN110985192B - Integrated form expansion tank - Google Patents
Integrated form expansion tank Download PDFInfo
- Publication number
- CN110985192B CN110985192B CN201911306767.6A CN201911306767A CN110985192B CN 110985192 B CN110985192 B CN 110985192B CN 201911306767 A CN201911306767 A CN 201911306767A CN 110985192 B CN110985192 B CN 110985192B
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- China
- Prior art keywords
- cavity
- overflow
- cooling liquid
- integrated
- degassing
- 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.)
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- 239000000110 cooling liquid Substances 0.000 claims abstract description 58
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000001816 cooling Methods 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims abstract description 8
- 238000007872 degassing Methods 0.000 claims description 54
- 238000005192 partition Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000009423 ventilation Methods 0.000 claims description 2
- 230000001174 ascending effect Effects 0.000 claims 1
- 239000000945 filler Substances 0.000 claims 1
- 239000007789 gas Substances 0.000 description 18
- 239000002826 coolant Substances 0.000 description 10
- 238000010926 purge Methods 0.000 description 3
- 230000002000 scavenging effect Effects 0.000 description 3
- 206010003497 Asphyxia Diseases 0.000 description 1
- JHGSLSLUFMZUMK-UHFFFAOYSA-N [2-hydroxy-2-(4-hydroxyphenyl)ethyl]-[4-(4-hydroxyphenyl)butan-2-yl]azanium;chloride Chemical compound Cl.C=1C=C(O)C=CC=1C(O)CNC(C)CCC1=CC=C(O)C=C1 JHGSLSLUFMZUMK-UHFFFAOYSA-N 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/029—Expansion reservoirs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/028—Deaeration devices
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01P—COOLING OF MACHINES OR ENGINES IN GENERAL; COOLING OF INTERNAL-COMBUSTION ENGINES
- F01P11/00—Component parts, details, or accessories not provided for in, or of interest apart from, groups F01P1/00 - F01P9/00
- F01P11/02—Liquid-coolant filling, overflow, venting, or draining devices
- F01P11/0285—Venting devices
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The invention relates to the field of automobile engine cooling systems, and particularly discloses an integrated expansion water tank, which comprises: the cooling liquid cavity is located above the overflow cavity, the upper portion of the cooling liquid cavity is provided with a pressure cover, an outlet of the pressure cover is communicated with an overflow loop, the overflow loop penetrates through the liquid cavity, a rear outlet of the overflow loop is arranged in the overflow cavity, and the upper portion of the overflow cavity is provided with a vent. The invention can solve the problems that the arrangement of the expansion tank has a bottleneck and the volume is not enough, and the cooling liquid is easy to leak, because the expansion volume is above the max line of the top of the expansion tank in the prior art.
Description
Technical Field
The invention relates to the field of automobile engine cooling systems, in particular to an integrated expansion water tank.
Background
When the temperature of a cooling system of an automobile rises, cooling liquid expands, if an expansion water tank is not arranged, the pressure of the cooling system rises, and the cooling liquid is sprayed out from a gap or crushes cooling system parts to cause the failure of the cooling system. The expansion tank is used for storing the cooling liquid expanded due to the temperature rise. It can also be used to add cooling liquid, if the cooling liquid is less, it can be added from the expansion tank.
The traditional expansion water tank mainly comprises a filling cover, a pressure cover, a water return port, a degassing port and an internal cavity. Wherein, the pressure cover and the filling cover can be combined into a whole, and fig. 1 is a schematic view of the prior water tank in the background art of the invention; fig. 2 is a schematic front perspective view of a conventional water tank in the background art of the present invention. As shown in fig. 1 and 2, the expansion tank comprises a conventional tank pressure cover 101, a conventional tank filling port 102, a degassing port 103, an internal main water path cavity 104, and a degassing channel cavity 105. The expansion volume is above the top max line of the expansion water tank, and the volume is limited by the arrangement of the whole vehicle and is often the bottleneck of the design. The internal waterway is relatively simple, mainly comprising a main waterway cavity 104 and a passage cavity 105, wherein reinforcing ribs are designed between the cavities. The expansion tank is arranged in front of the cab.
The expansion volume is above the max line at the top of the expansion tank in the prior art, so that a bottleneck exists in the arrangement of the expansion tank, the situation of insufficient volume often occurs, and the cooling liquid is easy to leak.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an integrated expansion water tank which can solve the problems that the volume of the expansion water tank is not enough and cooling liquid is easy to leak in the prior art.
In order to achieve the above purposes, the technical scheme adopted by the invention is as follows:
the invention provides an integrated expansion tank, comprising:
the cooling liquid cavity is located above the overflow cavity, the upper portion of the cooling liquid cavity is provided with a pressure cover, an outlet of the pressure cover is communicated with an overflow loop, the overflow loop penetrates through the liquid cavity, a rear outlet of the overflow loop is arranged in the overflow cavity, and the upper portion of the overflow cavity is provided with a vent.
On the basis of the technical scheme, an integrated degassing cavity is further arranged in the box body and communicated with the upper portion of the cooling liquid cavity, and a radiator degassing port and an engine degassing port are formed in the integrated degassing cavity.
On the basis of the technical scheme, the integrated degassing cavity is arranged on one side of the cooling liquid cavity and one side of the overflow cavity and is separated by the first partition plate, and the integrated degassing cavity is communicated with the upper part of the cooling liquid cavity.
On the basis of the technical scheme, the integrated degassing cavity is also provided with an exhaust gas recirculation EGR degassing port and a speed reducer degassing port.
On the basis of the technical scheme, the cooling liquid cavity comprises a main water channel cavity and a warm air water channel cavity, the main water channel cavity and the warm air water channel cavity are separated through a second partition plate, and the upper portion and the lower portion of the main water channel cavity and the upper portion and the lower portion of the warm air water channel cavity are communicated.
On the basis of the technical scheme, the upper part of the main water channel cavity is provided with an upward oblique filling port, the top of the warm air water channel cavity is provided with a warm air system water inlet, and the lower part of the warm air water channel cavity is provided with a downward oblique warm air system water return port.
On the basis of the technical scheme, the tank body is provided with a max line, and the height of the filling port is flush with the max line of the tank body.
On the basis of the technical scheme, the distance between the second partition plate and the bottom of the cooling liquid cavity is 30-40 mm.
On the basis of the technical scheme, the overflow cavity is provided with a protruding part protruding into the cooling liquid cavity, and the ventilation opening is formed in the protruding part.
On the basis of the technical scheme, the outlet of the overflow loop is vertically downward, and the distance between the outlet of the overflow loop and the inner wall of the overflow cavity is 5-10 mm.
Compared with the prior art, the invention has the advantages that: when the integrated expansion water tank is used, appropriate cooling liquid in the cooling liquid cavity is heated and expanded, if the volume of the cooling liquid cavity is insufficient, part of the cooling liquid overflows from the pressure cover and returns to the overflow cavity through the overflow loop, and the overflow cavity can store part of the overflowing cooling liquid and prevent the overflowing cooling liquid from splashing to a carriage; the upper part of the overflow cavity is provided with a vent which can be communicated with the atmospheric pressure, and the function of the pressure cover cannot be influenced.
Drawings
FIG. 1 is a schematic front view of a prior art water tank in the background of the invention;
FIG. 2 is a schematic perspective front view of a prior art water tank of the background of the invention;
FIG. 3 is a perspective view of an integrated expansion tank in an embodiment of the present invention;
FIG. 4 is a schematic side view of an integrated expansion tank in an embodiment of the present invention;
fig. 5 is a three-dimensional view of an integrated expansion tank in an embodiment of the present invention.
In the figure: 101. existing water tank pressure caps; 102. an existing water tank filling port; 103. a degassing port; 104. an internal main waterway cavity; 105. a degassing channel cavity;
1. a box body; 11. a pressure cap; 12. an overflow circuit; 13. a first separator; 14. a second separator; 21. a coolant cavity; 211. a main waterway cavity; 212. a warm air waterway cavity; 213. a filling port; 214. a water inlet of the warm air system; 215. a water return port of the warm air system; 22. an overflow cavity; 221. a vent; 23. a degassing cavity is integrated; 231. a radiator degassing port; 232. an engine air removal port; 233. an exhaust gas recirculation EGR gas scavenging port; 234. the retarder removes the gas port.
Detailed Description
Embodiments of the present invention will be described in further detail below with reference to the accompanying drawings.
Example one
FIG. 3 is a perspective view of an integrated expansion tank in an embodiment of the present invention; as shown in fig. 3, the present invention provides an integrated expansion tank comprising:
the box body 1 is internally provided with a cooling liquid cavity 21 and an overflow cavity 22, the cooling liquid cavity 21 is positioned above the overflow cavity 22, the upper part of the cooling liquid cavity 21 is provided with a pressure cover 11, the outlet of the pressure cover 11 is communicated with an overflow loop 12, the overflow loop 12 passes through the liquid cavity 21 and then is arranged in the overflow cavity 22, and the upper part of the overflow cavity 22 is provided with a vent 221.
When the integrated expansion water tank is used, after the cooling liquid in the cooling liquid cavity 21 is heated and expanded, if the volume of the cooling liquid cavity 21 is insufficient, part of the cooling liquid overflows from the pressure cover 11 and returns to the overflow cavity 22 through the overflow loop 12, and the overflow cavity 22 can store part of the overflowing cooling liquid to prevent the overflowing cooling liquid from splashing to a carriage; the vent 221 is disposed at the upper part of the overflow cavity 22, and can communicate with the atmospheric pressure without affecting the function of the pressure cover 11.
Example two
FIG. 4 is a schematic side view of an integrated expansion tank in an embodiment of the present invention; fig. 5 is a three-dimensional view of an integrated expansion tank in an embodiment of the present invention, as shown in fig. 4 and 5, on the basis of the first embodiment, an integrated degassing cavity 23 is further disposed in the tank body 1, and is communicated with an upper portion of the coolant cavity 21, and a radiator degassing port 231 and an engine degassing port 232 are disposed on the integrated degassing cavity 23.
In the present embodiment, an integrated degassing chamber 23 is provided in the tank 1, and a radiator degassing port 231 and an engine degassing port 232 are provided thereon for degassing the radiator and the engine, and the gases discharged from the exhaust pipes of the radiator and the engine are mixed in the integrated degassing chamber 23, so as to prevent the gases discharged from the radiator and the engine from forming a backflushing reaction. And the integrated degassing cavity 23 is communicated with the upper part of the cooling liquid cavity 21, and can share a pressure cover with the cooling liquid cavity 21 and be isolated from the outside. In this embodiment, the radiator gas-removing opening 231 and the engine gas-removing opening 232 are disposed at the upper portion of the integrated gas-removing cavity 23, so that the gas discharged from the radiator and the engine can rapidly enter the upper portion of the coolant cavity 21, and is convenient for discharging. Of course, in other embodiments, the radiator purge port 231 and the engine purge port 232 may be disposed at other positions of the integrated purge cavity 23.
EXAMPLE III
On the basis of the second embodiment, the integrated degassing cavity 23 is provided on one side of the cooling liquid cavity 21 and the overflow cavity 22 and is partitioned by the first partition plate 13, and the integrated degassing cavity 23 communicates with the upper portion of the cooling liquid cavity 21.
In the embodiment, a gap of 5-10 mm is reserved between the first partition plate 13 and the inner wall of the top of the box body; the integrated deaeration chamber 23 is separated from the coolant chamber 21 and the overflow chamber by a first partition 13, allowing the integrated deaeration chamber 23 to store a portion of the liquid entrained in the exhaust gases from the radiator and engine, separately from the coolant chamber 21.
Example four
In addition to the second embodiment, the integrated degassing cavity 23 is further provided with an exhaust gas recirculation EGR degassing port 233 and a damper degassing port 234.
In the present embodiment, the EGR gas outlet 233 and the damper gas outlet 234 are provided at the lower portion of the integrated scavenging chamber 23, but in other embodiments, the EGR gas outlet 233 and the damper gas outlet 234 may be provided at other portions of the integrated scavenging chamber 23. On all integratedly setting up integrated degasification cavity 23 with radiator degasification mouth 231 and engine degasification mouth 232 and exhaust gas recirculation EGR degasification mouth 233 and speed reducer degasification mouth 234, can save space to can share pressure lid 11 on coolant liquid cavity 21 upper portion, isolated with external, and four gas outlets can with in integrated degasification cavity 23, can avoid the counterpulsation problem when using the cross-connection outside.
EXAMPLE five
On the basis of the first embodiment, the coolant cavity 21 includes a main water channel cavity 211 and a warm air water channel cavity 212, the main water channel cavity 211 and the warm air water channel cavity 212 are separated by the second partition 14, and the upper portion and the lower portion of the main water channel cavity 211 and the warm air water channel cavity 212 are both communicated.
In this embodiment, the main water channel 211 and the warm air water channel 212 can reduce the mutual mixing of the mixed liquid in the main water channel 211 and the warm air water channel 212. The lower part communication can make the filled coolant flow into the two cavities, and the upper part communication can make the gas in the warm air waterway cavity 212 be discharged from the pressure cover on the upper part of the main waterway cavity 211, so as to prevent suffocation.
Preferably, an upper portion of main waterway cavity 211 is provided with an upward inclined filling port 213.
In this embodiment, the filling port 213 is provided upward to allow the user to fill the coolant. The top of the warm air waterway cavity 212 is provided with a warm air system water inlet 214, and the lower part is provided with a warm air system water return port 215 which is inclined downwards and can be relatively separated from the main waterway cavity 211. The warm air system water return port 215 is also a water return port of the cooling system, and the volume can be reduced through integrated design.
Preferably, the height of the filling opening 213 is flush with the max line of the tank 1, preventing the user from filling too much to occupy the expansion volume.
Preferably, the distance between the second partition plate 14 and the bottom of the cooling liquid cavity 21 is 30-40 mm. In this embodiment, the distance between the second partition plate 14 and the bottom of the cooling liquid cavity 21 is 30-40 mm, so that when the cooling liquid is filled, the cooling liquid can rapidly flow into the warm air water channel cavity 212.
Preferably, the overflow chamber 22 is provided with a protrusion protruding into the cooling liquid chamber 21, and the vent 221 is provided on the protrusion. In this embodiment, the vent 221 is disposed on the protrusion to provide a larger storage volume for the overflow cavity 22, thereby preventing the overflow cavity 22 from being rapidly filled with the overflowing cooling liquid.
Preferably, the outlet of the overflow loop 12 is vertically downward, and the distance between the outlet and the inner wall of the overflow cavity 22 is 5-10 mm. In this embodiment, the outlet of the overflow loop 12 is vertically downward, so that the overflowed cooling liquid can rapidly flow into the overflow cavity 22, and the distance between the overflow cavity 22 and the outlet is 5-10 mm, so as to prevent splashing.
In summary, the following steps: when the integrated expansion water tank is used, after the cooling liquid in the cooling liquid cavity 21 is heated and expanded, if the volume of the cooling liquid cavity 21 is insufficient, part of the cooling liquid overflows from the pressure cover 11 and returns to the overflow cavity 22 through the overflow loop 12, and the overflow cavity 22 can store part of the overflowing cooling liquid to prevent the overflowing cooling liquid from splashing to a carriage; the vent 221 is disposed at the upper part of the overflow cavity 22, and can communicate with the atmospheric pressure without affecting the function of the pressure cover 11. On all integratedly setting up integrated degasification cavity 23 with radiator degasification mouth 231 and engine degasification mouth 232 and exhaust gas recirculation EGR degasification mouth 233 and speed reducer degasification mouth 234, can save space to can share pressure lid 11 on coolant liquid cavity 21 upper portion, isolated with external, and four gas outlets can with in integrated degasification cavity 23, can avoid the counterpulsation problem when using the cross-connection outside. The height of the filling opening 213 is flush with the line max of the tank 1, preventing the user from filling too much to take up the expansion volume.
The present invention is not limited to the above-mentioned preferred embodiments, and any other products in various forms can be obtained by anyone with the teaching of the present invention, but any changes in the shape or structure thereof, which have the same or similar technical solutions as the present invention, are within the protection scope.
Claims (7)
1. An integrated expansion tank, comprising:
the cooling device comprises a box body (1), wherein a cooling liquid cavity (21) and an overflow cavity (22) are arranged in the box body, the cooling liquid cavity (21) is positioned above the overflow cavity (22), a pressure cover (11) is arranged at the upper part of the cooling liquid cavity (21), an outlet of the pressure cover (11) is communicated with an overflow loop (12), the overflow loop (12) penetrates through the liquid cavity (21) and then is arranged in the overflow cavity (22), and a vent (221) is arranged at the upper part of the overflow cavity (22);
an integrated degassing cavity (23) is further arranged in the box body (1) and is communicated with the upper part of the cooling liquid cavity (21), and a radiator degassing port (231) and an engine degassing port (232) are arranged on the integrated degassing cavity (23); the radiator degassing port (231) and the engine degassing port (232) are arranged at the upper part of the integrated degassing cavity;
the cooling liquid cavity (21) comprises a main water channel cavity (211) and a warm air water channel cavity (212), the main water channel cavity (211) and the warm air water channel cavity (212) are separated by a second partition plate (14), and the upper part and the lower part of the main water channel cavity (211) and the warm air water channel cavity (212) are communicated;
the distance between the second partition plate (14) and the bottom of the cooling liquid cavity (21) is 30-40 mm.
2. An integrated expansion tank as claimed in claim 1, wherein: the integrated degassing cavity (23) is arranged on one side of the cooling liquid cavity (21) and the overflow cavity (22) and is separated by a first partition plate (13).
3. An integrated expansion tank as claimed in claim 1, wherein: the integrated degassing cavity (23) is also provided with an exhaust gas recirculation EGR degassing port (233) and a speed reducer degassing port (234).
4. An integrated expansion tank as claimed in claim 1, wherein: the upper portion of main water route cavity (211) is equipped with oblique ascending filling mouth (213), the top of warm braw water route cavity (212) is equipped with warm braw system water inlet (214), and the lower part is equipped with oblique decurrent warm braw system return water mouth (215).
5. An integrated expansion tank as claimed in claim 4, wherein: the tank is provided with a max line and the height of the filler opening (213) is flush with the max line of the tank 1.
6. An integrated expansion tank according to claim 1, characterized in that said overflow chamber (22) is provided with a projection projecting into said cooling liquid chamber (21), said ventilation opening (221) being provided on said projection.
7. An integrated expansion tank as claimed in claim 1, wherein: the outlet of the overflow loop (12) is vertically downward, and the distance between the outlet of the overflow loop and the inner wall of the overflow cavity (22) is 5-10 mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306767.6A CN110985192B (en) | 2019-12-18 | 2019-12-18 | Integrated form expansion tank |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911306767.6A CN110985192B (en) | 2019-12-18 | 2019-12-18 | Integrated form expansion tank |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110985192A CN110985192A (en) | 2020-04-10 |
| CN110985192B true CN110985192B (en) | 2021-03-30 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911306767.6A Active CN110985192B (en) | 2019-12-18 | 2019-12-18 | Integrated form expansion tank |
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| Country | Link |
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| CN (1) | CN110985192B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111720200B (en) * | 2020-06-22 | 2021-08-03 | 北京汽车集团越野车有限公司 | Expansion tank, cooling system and vehicle |
| CN114563145B (en) * | 2022-04-29 | 2022-07-19 | 常州瓦迈机电设备有限公司 | A leak testing equipment for expansion tank |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680833A (en) * | 1996-12-23 | 1997-10-28 | Chrysler Corporation | Combination coolant deaeration and overflow bottle |
| JP2010190219A (en) * | 2009-02-13 | 2010-09-02 | Thermo King Corp | Multi-chamber coolant tank |
| CN101839164A (en) * | 2010-01-15 | 2010-09-22 | 北汽福田汽车股份有限公司 | Auxiliary water tank device and engine cooling system |
| CN102654078A (en) * | 2012-05-18 | 2012-09-05 | 奇瑞汽车股份有限公司 | Automobile expansion box |
| CN104018928A (en) * | 2014-05-30 | 2014-09-03 | 东风商用车有限公司 | Automobile expansion tank |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8074819B2 (en) * | 2008-10-09 | 2011-12-13 | Mann + Hummel Gmbh | Siphon tube for a multi-chamber fluid reservoir |
-
2019
- 2019-12-18 CN CN201911306767.6A patent/CN110985192B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5680833A (en) * | 1996-12-23 | 1997-10-28 | Chrysler Corporation | Combination coolant deaeration and overflow bottle |
| JP2010190219A (en) * | 2009-02-13 | 2010-09-02 | Thermo King Corp | Multi-chamber coolant tank |
| CN101839164A (en) * | 2010-01-15 | 2010-09-22 | 北汽福田汽车股份有限公司 | Auxiliary water tank device and engine cooling system |
| CN102654078A (en) * | 2012-05-18 | 2012-09-05 | 奇瑞汽车股份有限公司 | Automobile expansion box |
| CN104018928A (en) * | 2014-05-30 | 2014-09-03 | 东风商用车有限公司 | Automobile expansion tank |
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| Publication number | Publication date |
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| CN110985192A (en) | 2020-04-10 |
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