CN106321210A - Exhaust structure capable of reducing exhaust disturbance between air cylinders of engine - Google Patents
Exhaust structure capable of reducing exhaust disturbance between air cylinders of engine Download PDFInfo
- Publication number
- CN106321210A CN106321210A CN201610850880.0A CN201610850880A CN106321210A CN 106321210 A CN106321210 A CN 106321210A CN 201610850880 A CN201610850880 A CN 201610850880A CN 106321210 A CN106321210 A CN 106321210A
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- China
- Prior art keywords
- exhaust
- cylinder
- aerofluxus
- pipe
- crosses
- Prior art date
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/08—Other arrangements or adaptations of exhaust conduits
- F01N13/10—Other arrangements or adaptations of exhaust conduits of exhaust manifolds
- F01N13/107—More than one exhaust manifold or exhaust collector
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/011—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more purifying devices arranged in parallel
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
- Exhaust Silencers (AREA)
Abstract
The invention discloses an exhaust structure capable of reducing exhaust disturbance between air cylinders of an engine. The exhaust structure comprises an exhaust branch pipe communicated with each air cylinder, every two exhaust branch pipes are intersected to form an intersection pipe, each intersection pipe is communicated with a catalysis device, and exhaust openings of all the catalysis devices are intersected to form a main exhaust opening. According to the exhaust structure capable of reducing the exhaust disturbance between the air cylinders of the engine, the exhaust disturbance can be reduced, exhaust is more thorough, the residual amount of waste gas in the air cylinders is reduced, the air inlet amount is improved, meanwhile, the temperature of mixed gas in the air cylinders is reduced, and detonation is reduced; meanwhile, exhausts of the two sets of air cylinders are provided with the independent catalysis devices, the oil break and cylinder stop function of the two sets of air cylinders of the engine can be achieved, and the oil consumption rate is reduced.
Description
Technical field
The present invention relates to engine art, particularly relate to a kind of aerofluxus knot reducing aerofluxus interference between electromotor each cylinder
Structure.
Background technology
Along with the progressively enforcement of country's fourth stage fuel economy regulation, the main bugbear that electromotor currently faces is how to reduce
Fuel oil consumes, to meet the most harsh laws and regulations requirement.
The technological means that current gasoline electromotor reduces oil consumption is a lot, such as: reduces mechanical friction, reduce pumping loss, heat
Management, raising efficiency of combustion, supercharging miniaturization etc., wherein Atkinson cycle technology is as reducing pumping loss and improving combustion
Burn the measure of efficiency, hybrid electric vehicle is used widely, owing to Atkinson cycle air inflow is less than normal, and need big
Geometrical compression ratio, external characteristics performance can not get well playing, power output on the weak side.
The electromotor of the exhaust branch pipe of conventionally employed 4-1 form, in the working range of 2000rpm to rated speed, row
The pressure at expulsion of two cylinders that gas stroke is adjacent can interfere, and causes the increase of exhaust residual amount, and temperature cylinder rises, high
Temperature causes gaseous mixture by premature ignition, just creates pinking.As Fig. 1 illustrates engine exhaust mechanism in prior art, and Fig. 2
Schematic diagram for corresponding engine exhaust branch pipe exhaust interference.Four pneumatic cylinders of prior art electromotor in Fig. 1, respectively the
One pneumatic cylinder the 1, second pneumatic cylinder the 2, the 3rd pneumatic cylinder 3 and the 4th pneumatic cylinder 4.
In existing electromotor, during the 3rd pneumatic cylinder aerofluxus is formed, the impact that the first pneumatic cylinder is produced by pressure at expulsion,
See Fig. 1, it is shown that the pressure wave path 21 ' that the 3rd pneumatic cylinder pressure at expulsion is formed.Further, arrow A ', arrow B ' in Fig. 2
When representing that rotating speed is 2000rpm, 4000rpm and 8000rpm respectively with arrow C ', the 3rd pneumatic cylinder pressure at expulsion is to the first air pressure
Cylinder produces the position of impact.
Could be aware that, the four shown in Fig. 1 is in the range of rotating speed 2000-8000rpm, to the first air pressure
The aerofluxus formation of cylinder can impact, and this can cause the first pneumatic cylinder to have exhaust residual, and internal cylinder temperature rises, and high temperature causes
Gaseous mixture, by premature ignition, produces pinking.In like manner, the 4th cylinder can produce interference to triplex, and the 4th cylinder is produced dry by the second cylinder
Disturbing, the first cylinder can produce interference to the second cylinder.
Still further aspect, traditional electromotor arranges catalyst converter after exhaust main, carries out Hydrocarbon process, typically
Its operating temperature could be converted into vehicle exhaust the gas of environmental sound efficiently at 400-800 degree Celsius.So how
Allow catalyst converter be rapidly heated, reduce the exhaust emissions under warming-up operating mode, be the problem that be must take into of all petrol engines.Existing
There is other to reduce the 4-2-1 exhaust manifold of aerofluxus perturbation technique, reduce interference by the length that exhaust branch pipe is significantly increased, row
Gas manifold structure form does not has essential change, and catalyst converter is on house steward, and long exhaust manifold necessarily causes catalyst temperature to carry
Rise slower.Need by postponing the duration of ignition in the cold car idling stage and improving idling speed, it is ensured that catalyst converter can be quickly
Reach the suitableeest operating temperature, decrease discharge, it is obvious that this electromotor can be of a relatively high in cold car idling stage oil consumption, and combustion
Burn instability, and for following higher discharge standard, this technology can be in the face of bigger challenge.And this structure aerofluxus discrimination
Pipe volume is huge, is difficult to arrange.
Summary of the invention
It is an object of the invention to provide a kind of exhaust structure reducing the interference of aerofluxus between electromotor each cylinder, existing to solve
Problem in technology, it is possible to reduce aerofluxus interference, reduce pinking, the length of exhaust branch pipe, the row of reducing can be shortened simultaneously
The volume of gas manifold, catalyst converter is divided into two parts and moves forward, and improves the disposal ability of Hydrocarbon, meanwhile, can realize again breaking
The function of oil cylinder deactivation (disconnected one, four cylinders or two, triplex).
The present invention provides a kind of and reduces the exhaust structure of aerofluxus interference between electromotor each cylinder, including: respectively with each gas
The exhaust branch pipe of cylinder connection, the formation that crosses of each two exhaust branch pipe crosses pipe, each described in the pipe that crosses be respectively communicated with catalyst converter,
The air vent of each described catalyst converter crosses and forms the total mouth of aerofluxus.
The exhaust structure of aerofluxus interference between the reduction each cylinder of electromotor described above, these, it is preferred to, described catalyst converter
Before be provided with oxygen sensor.
The exhaust structure of aerofluxus interference between the reduction each cylinder of electromotor described above, these, it is preferred to, described oxygen senses
Device is arranged at the pipe that crosses.
The exhaust structure of aerofluxus interference between the reduction each cylinder of electromotor described above, these, it is preferred to, described aerofluxus is propped up
Each described cylinder is installed and connected to pipe by flange.
The exhaust structure of aerofluxus interference between the reduction each cylinder of electromotor described above, these, it is preferred to, described catalyst converter
For ternary catalyzing unit.
The exhaust structure of aerofluxus interference between the reduction each cylinder of electromotor described above, these, it is preferred to, described electromotor
For four, each cylinder is respectively the first pneumatic cylinder, the second pneumatic cylinder, the 3rd pneumatic cylinder and the 4th pneumatic cylinder, with
The exhaust branch pipe of each cylinder connection is respectively first exhaust arm, second exhaust arm, the 3rd exhaust branch pipe and the 4th aerofluxus
Arm；Wherein, the formation first that crosses of first exhaust arm and the 4th exhaust branch pipe crosses pipe, and described first pipe that crosses connects first
Catalyst converter；The formation second that crosses of second exhaust arm and the 3rd exhaust branch pipe crosses pipe, and described second pipe that crosses connects second and urges
Change device.
What the present invention provided reduces the exhaust structure of aerofluxus interference between electromotor each cylinder, it is possible to reduces aerofluxus interference, allows
Aerofluxus is more thorough, reduces waste gas residual quantity in cylinder, while improving air inflow, reduces mixed air temperature in cylinder
Degree, reduces pinking.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of engine exhaust mechanism in prior art；
Fig. 2 is the schematic diagram of engine exhaust branch pipe exhaust interference in prior art；
Fig. 3 reduces the exhaust structure schematic diagram of aerofluxus interference between electromotor each cylinder for what the embodiment of the present invention provided；
Fig. 4 reduces exhaust branch pipe in the exhaust structure that between electromotor each cylinder, aerofluxus is disturbed for what the embodiment of the present invention provided
The schematic diagram of exhaust interference；
What Fig. 5 embodiment of the present invention provided reduces exhaust branch pipe in the exhaust structure that between electromotor each cylinder, aerofluxus is disturbed
The pathway figure of pressure wave.
Description of reference numerals:
1 first pneumatic cylinder, 2 second pneumatic cylinders, 3 the 3rd pneumatic cylinders, 4 the 4th pneumatic cylinders, 5 flanges, 6
One cross pipe, 7 second cross pipe, 8 oxygen sensor mounting holes, 9 first catalyst converters, 10 second catalyst converters, 11
One exhaust branch pipe, 12 second exhaust arms, 13 the 3rd exhaust branch pipes, 14 the 4th exhaust branch pipes, the 15 total mouths of aerofluxus,
3rd pneumatic cylinder exhaust pressure in the pressure wave path of 21 present invention the 3rd pneumatic cylinder pressures at expulsion formation, 21 ' prior aries
The pressure wave path that power is formed
Detailed description of the invention
Embodiments of the invention are described below in detail, and the example of described embodiment is shown in the drawings, the most from start to finish
Same or similar label represents same or similar element or has the element of same or like function.Below with reference to attached
The embodiment that figure describes is exemplary, is only used for explaining the present invention, and is not construed as limiting the claims.
The present invention provides a kind of and reduces the exhaust structure (hereinafter referred to as exhaust structure) of aerofluxus interference between electromotor each cylinder,
Including the exhaust branch pipe connected with each cylinder in every cylinder engine, the formation that crosses of each two exhaust branch pipe crosses pipe, often
The individual pipe that crosses has been respectively communicated with catalyst converter (cross pipe do not share same catalyst converter), and the air vent of each catalyst converter crosses formation
The total mouth of aerofluxus.
Understanding for convenience, illustrating as a example by four, four cylinders are respectively the first pneumatic cylinder 1, second
Pneumatic cylinder the 2, the 3rd pneumatic cylinder 3 and the 4th pneumatic cylinder 4, connect with each cylinder is respectively first exhaust arm 11, second row
Gas branch pipe the 12, the 3rd exhaust branch pipe 13 and the 4th exhaust branch pipe 14.First exhaust arm 11 and the 4th exhaust branch pipe 14 cross shape
Becoming first to cross pipe 6, first pipe 6 that crosses connects the first catalyst converter 9；Second exhaust arm 12 and the 3rd exhaust branch pipe 13 cross shape
Becoming second to cross pipe 7, second pipe 7 that crosses connects the second catalyst converter 10.
The exhaust structure of the present invention can reduce aerofluxus interference between cylinder, makes aerofluxus more thorough, reduces waste gas at gas
Residual quantity in cylinder, while improving air inflow, reduces mixture temperature in cylinder, reduces pinking tendency, electronic spark advance
Angle can more shift to an earlier date, and efficiency of combustion gets a promotion.Specifically how to reach this effect please continue to refer to hereafter.
This effect and it can be readily appreciated that illustrating, about starting as a example by following four the most for convenience of explanation
The principle of machine work, could be aware that to those skilled in the art, does not repeats at this, mainly relate in following description
And the 3rd during pneumatic cylinder aerofluxus formed, the impact that the first pneumatic cylinder is produced by pressure at expulsion, see Fig. 1, it is shown that the 3rd air pressure
The pressure wave path 21 ' that cylinder pressure at expulsion is formed.
With continued reference to Fig. 1, it is shown that the schematic diagram of a kind of four exhaust structure in prior art, Fig. 2 is right
Should the schematic diagram of four exhaust branch pipe exhaust interference.
In Fig. 2, arrow A ', arrow B ' and arrow C ' represent when rotating speed is 2000rpm, 4000rpm and 8000rpm respectively, the
Three pneumatic cylinder pressures at expulsion produce the position of impact to the first pneumatic cylinder.It should be understood that when the 3rd pneumatic cylinder aerofluxus, aerofluxus
Pressure wave can be delivered to the first pneumatic cylinder through the regular hour, i.e. has certain hysteresis quality.Rotating speed is the fastest, and the delayed time is more
Long, show the position of the impact of the first pneumatic cylinder in fig. 2 gets over the most rearward.
Could be aware that from Fig. 2, a kind of four shown in Fig. 1 is in the scope of rotating speed 2000-8000rpm
In, the aerofluxus formation to the first pneumatic cylinder can impact, and this can cause the first pneumatic cylinder to have exhaust residual, internal cylinder temperature
Rising, high temperature causes gaseous mixture by premature ignition, produces pinking.
Fig. 3 shows the schematic diagram of the exhaust structure (as a example by four) of the application, in conjunction with Fig. 4, for application
The schematic diagram of the exhaust branch pipe exhaust interference in four exhaust structure, arrow A, arrow B and arrow C respectively represent turn
When speed is 2000rpm, 4000rpm and 8000rpm, the 3rd pneumatic cylinder pressure at expulsion produces the position of impact to the first pneumatic cylinder.
It can be seen that the present invention's reduces between electromotor each cylinder the exhaust structure of aerofluxus interference under major part speed conditions to first
The aerofluxus of pneumatic cylinder is formed all without producing impact.
The explanation present invention has at least one reason of above beneficial effect below, as a example by four, when the
One pneumatic cylinder be in instroke finally time, inlet valve opens air inlet in advance, and pressure at expulsion is preferably minimized, at this moment the 3rd pneumatic cylinder
Exhaust valve is just opened, and (seeing Fig. 5, it is shown that pressure wave path, in Fig. 5, label 21 represents pressure to stronger exhaust pressure wave
Wave loops path), the 3rd exhaust branch pipe 13 it is delivered to the porch of the first gas exhaust branch pipe, due to the fact that transfer route is slightly
Long, and bang path has catalyst converter, the small structure of catalyst converter can produce decline of pressure, causes exhaust pressure wave to reach
That has decayed during the first pneumatic cylinder exhaust valve is the most weak, and the impact on the aerofluxus of the first pneumatic cylinder is preferably minimized.Test proves, urges
Change device and can produce the pressure drop of about more than 20kPa when constant engine point, therefore catalyst converter double as decline of pressure unit be
The most suitable (catalyst converter itself has the function processing Hydrocarbon, is described more detail below).
In sum, the exhaust structure of aerofluxus interference between electromotor each cylinder that reduces of the present invention compares energy than prior art
Enough reduce aerofluxus interference, reduce pinking.
Further, the exhaust structure of the present invention decreases the length of exhaust branch pipe, thus decreases volume.Compared to existing
Arranging catalyst converter in technology on exhaust main, bulky catalyst converter is divided into two little catalyst converters by the present invention, and position is divided
It is not advanced to cross on pipe, has catalyst converter exhaust pipe-shaped to become exhaust main, it is not necessary to having many bends or curves, and owing to have passed through catalysis
After device, (as above-mentioned, the blood pressure lowering of catalyst converter was descended, and was equivalent to add damping), the reduction of pressure wave can be made, thus significantly contract
The length of short arm, reduces exhaust manifold volume.
Further, catalyst converter of the present invention be located closer to cylinder, hence into catalyst converter gas temperature the most more
Height, is more easy to reach the operating temperature of catalyst converter, thus improves the disposal ability of Hydrocarbon.The preferred embodiment party of one
In formula, catalyst converter is ternary catalyzing unit.
Continue with the exhaust structure of the explanation present invention, be provided with oxygen sensor before above-mentioned catalyst converter, can be grouped gas
Cylinder carries out the closed loop control of electromotor independently, so can be by the oil-break of one of which cylinder, it is achieved the function of cylinder deactivation, enters
One step reduces engine fuel consumption rate.Preferably, oxygen sensor is arranged at the pipe that crosses, and can arrange aerobic and pass at the pipe that crosses
Sensor installing hole 8.
In the optional embodiment of one, each described cylinder is installed and connected to exhaust branch pipe by flange 5.
The structure of the present invention, feature and action effect, above institute are described in detail above according to graphic shown embodiment
State only presently preferred embodiments of the present invention, but the present invention is not to limit practical range, every structure according to the present invention shown in drawing
Want made change, or be revised as the Equivalent embodiments of equivalent variations, still without departing from description and diagram contained spiritual time,
All should be within the scope of the present invention.
Claims (6)
1. one kind is reduced the exhaust structure of aerofluxus interference between electromotor each cylinder, it is characterised in that including:
The exhaust branch pipe connected with each cylinder respectively, the formation that crosses of each two exhaust branch pipe crosses pipe, each described in cross pipe
After be respectively communicated with catalyst converter, the air vent of each described catalyst converter cross formation the total mouth of aerofluxus.
The exhaust structure of aerofluxus interference between each cylinder of reduction electromotor the most according to claim 1, it is characterised in that
It is provided with oxygen sensor before described catalyst converter.
The exhaust structure of aerofluxus interference between each cylinder of reduction electromotor the most according to claim 2, it is characterised in that
Described oxygen sensor is arranged at the pipe that crosses.
The exhaust structure of aerofluxus interference between each cylinder of reduction electromotor the most according to claim 1, it is characterised in that
Each described cylinder is installed and connected to described exhaust branch pipe by flange.
The exhaust structure of aerofluxus interference between each cylinder of reduction electromotor the most according to claim 1, it is characterised in that
Described catalyst converter is ternary catalyzing unit.
6. according to the exhaust structure of aerofluxus interference, its feature between the reduction electromotor each cylinder described in any one of claim 1-5
It is,
Described electromotor is four, each cylinder be respectively the first pneumatic cylinder, the second pneumatic cylinder, the 3rd pneumatic cylinder and
4th pneumatic cylinder, the exhaust branch pipe connected with each cylinder is respectively first exhaust arm, second exhaust arm, the 3rd aerofluxus are propped up
Pipe and the 4th exhaust branch pipe；Wherein,
The formation first that crosses of described first exhaust arm and described 4th exhaust branch pipe crosses pipe, and described first pipe that crosses connects the
One catalyst converter；
The formation second that crosses of described second exhaust arm and described 3rd exhaust branch pipe crosses pipe, and described second pipe that crosses connects the
Two catalyst converters.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850880.0A CN106321210A (en) | 2016-09-26 | 2016-09-26 | Exhaust structure capable of reducing exhaust disturbance between air cylinders of engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610850880.0A CN106321210A (en) | 2016-09-26 | 2016-09-26 | Exhaust structure capable of reducing exhaust disturbance between air cylinders of engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN106321210A true CN106321210A (en) | 2017-01-11 |
Family
ID=57820111
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610850880.0A Pending CN106321210A (en) | 2016-09-26 | 2016-09-26 | Exhaust structure capable of reducing exhaust disturbance between air cylinders of engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN106321210A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341984A (en) * | 2022-10-14 | 2022-11-15 | 潍柴动力股份有限公司 | Multi-cylinder engine exhaust manifold, parameter calculation method thereof and related equipment |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342890B1 (en) * | 2002-03-08 | 2006-06-07 | Nissan Motor Co., Ltd. | Exhaust manifold for four-cylinder engine |
| CN201096006Y (en) * | 2007-09-12 | 2008-08-06 | 安徽江淮汽车股份有限公司 | 2.4 liter CBR petrolic exhaust gas manifold |
| CN201723291U (en) * | 2010-07-08 | 2011-01-26 | 芜湖恒耀汽车零部件有限公司 | Automobile exhaust manifold |
| CN102003262A (en) * | 2010-11-24 | 2011-04-06 | 奇瑞汽车股份有限公司 | Dual pre-catalysis exhaust device |
| CN105156183A (en) * | 2015-10-14 | 2015-12-16 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | High-compression-ratio four-cylinder gasoline engine catalyst tight coupling type exhaust system |
-
2016
- 2016-09-26 CN CN201610850880.0A patent/CN106321210A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1342890B1 (en) * | 2002-03-08 | 2006-06-07 | Nissan Motor Co., Ltd. | Exhaust manifold for four-cylinder engine |
| CN201096006Y (en) * | 2007-09-12 | 2008-08-06 | 安徽江淮汽车股份有限公司 | 2.4 liter CBR petrolic exhaust gas manifold |
| CN201723291U (en) * | 2010-07-08 | 2011-01-26 | 芜湖恒耀汽车零部件有限公司 | Automobile exhaust manifold |
| CN102003262A (en) * | 2010-11-24 | 2011-04-06 | 奇瑞汽车股份有限公司 | Dual pre-catalysis exhaust device |
| CN105156183A (en) * | 2015-10-14 | 2015-12-16 | 中国第一汽车股份有限公司无锡油泵油嘴研究所 | High-compression-ratio four-cylinder gasoline engine catalyst tight coupling type exhaust system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115341984A (en) * | 2022-10-14 | 2022-11-15 | 潍柴动力股份有限公司 | Multi-cylinder engine exhaust manifold, parameter calculation method thereof and related equipment |
| CN115341984B (en) * | 2022-10-14 | 2023-01-24 | 潍柴动力股份有限公司 | Multi-cylinder engine exhaust manifold, parameter calculation method thereof and related equipment |
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| CB02 | Change of applicant information |
Address after: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant after: Anhui Jianghuai Automobile Group Limited by Share Ltd Address before: 230601 Anhui Province, Hefei City Industrial Park, the Peach Blossom Road No. 669 Applicant before: Anhui Jianghuai Automotive Co., Ltd. |
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Application publication date: 20170111 |
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| RJ01 | Rejection of invention patent application after publication |