CN215213736U - Engine low pressure EGR control system and vehicle - Google Patents
Engine low pressure EGR control system and vehicle Download PDFInfo
- Publication number
- CN215213736U CN215213736U CN202121657517.XU CN202121657517U CN215213736U CN 215213736 U CN215213736 U CN 215213736U CN 202121657517 U CN202121657517 U CN 202121657517U CN 215213736 U CN215213736 U CN 215213736U
- Authority
- CN
- China
- Prior art keywords
- engine
- egr
- mixed gas
- low pressure
- control system
- 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.)
- Active
Links
Images
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
- Supercharger (AREA)
Abstract
本实用新型提供了一种发动机低压EGR控制系统及车辆，涉及车辆技术领域。本实用新型的发动机低压EGR控制系统包括：发动机系统，包括进气管路、排气管路和增压器压轮；其中，进气管路设置在发动机系统的进气侧，空气由进气管路流进发动机系统。EGR系统，与进气管路和排气管路连通，用于将排气管路的EGR气体引进进气管路处。进气管路处设置有加热装置，空气和EGR气体在加热装置前形成混合气体后流入加热装置处，以利用加热装置将混合气体的温度加热到混合气体的露点温度以上后流经增压器压轮。本实用新型的混合气体经过加热装置加热到露点以上后才进入到增压器压轮处，减少了对增压器压轮造成的损坏。
The utility model provides an engine low-pressure EGR control system and a vehicle, and relates to the technical field of vehicles. The engine low-pressure EGR control system of the present invention includes: an engine system, including an intake pipeline, an exhaust pipeline and a supercharger pressure wheel; wherein, the intake pipeline is arranged on the intake side of the engine system, and the air flows through the intake pipeline. into the engine system. The EGR system is communicated with the intake pipeline and the exhaust pipeline, and is used for introducing the EGR gas in the exhaust pipeline into the intake pipeline. A heating device is installed at the intake pipeline. The air and EGR gas form a mixed gas before the heating device and then flow into the heating device, so that the temperature of the mixed gas is heated to above the dew point temperature of the mixed gas by the heating device, and then flows through the supercharger pressure. wheel. The mixed gas of the utility model enters the pressure roller of the supercharger after being heated by the heating device to above the dew point, thereby reducing the damage to the pressure roller of the supercharger.
Description
Technical Field
The utility model relates to the technical field of vehicles, especially, relate to an engine low pressure EGR control system and vehicle.
Background
Along with social development, the popularity of automobiles is increasing day by day, and in order to realize energy conservation and emission reduction, the emission of the nation VI is implemented in advance by the nation, and the emission regulation of the nation VII is planned. In order to meet increasingly stringent fuel consumption and emission regulations, various manufacturers are exploring new technologies such as VVL, cylinder deactivation technology, low friction, and the like. The EGR (exhaust gas recirculation) technology has higher cost performance in the aspects of energy conservation and emission reduction, and is gradually applied to small-sized gasoline passenger vehicles. The potential for energy conservation and emission reduction of EGR technology is also being gradually explored. The low-pressure EGR technology is to introduce part of the exhaust gas upstream of the supercharger through an EGR valve and a connecting pipe, mix with fresh air, compress the mixture by the supercharger, and then enter the cylinder. The EGR technology can inhibit knocking, reduce pumping loss, reduce oil injection thickening and reduce combustion temperature, thereby achieving the effects of energy conservation and emission reduction.
In the actual use process, the temperature of engine exhaust gas is higher (can reach more than 900 ℃ at most), the water content is more (exists in the form of water vapor), the temperature of fresh air is lower, the water content is less (exists in the form of water vapor), after the fresh air and the exhaust gas are mixed, the temperature of the mixed gas is lower than the dew point temperature of the separated condensed water, the separated condensed water (in the form of water drops) is generated, and then the mixed gas and the condensed water pass through a supercharger impeller rotating at a high speed (the highest rotating speed can reach 20 ten thousand revolutions per minute), so that the supercharger impeller is damaged.
At present, in order to deal with the problem of condensate water generated by a low-pressure EGR system, the following modes are generally adopted: 1. the use environment of EGR is limited. For example, when ambient temperature is low, EGR is not used; when the ambient humidity is too high, EGR is not used; the temperature of the cooled exhaust gas is increased. 2. The capability of the booster pinch roller for resisting condensed water is improved. And the restriction of the use of EGR can greatly reduce the energy-saving and emission-reducing effects of the EGR technology, and is not beneficial to environmental protection. The improvement of the condensed water resistance of the pressure wheel of the supercharger needs to improve the pressure wheel of the supercharger and redesign the pressure wheel of the supercharger, so that the design difficulty is improved and the cost is increased.
SUMMERY OF THE UTILITY MODEL
The utility model discloses an object of the first aspect is to provide an engine low pressure EGR control system, solve among the prior art for reducing the energy saving and emission reduction effect that the comdenstion water reduces the EGR technique to the damage of booster pinch roller, be unfavorable for the problem of environmental protection.
Another object of the first aspect of the present invention is to solve the problem of the prior art in which the booster wheel needs to be redesigned, increasing the cost.
It is an object of a second aspect of the present invention to provide a vehicle incorporating the engine low pressure EGR control system.
Particularly, the utility model provides an engine low pressure EGR control system, include:
the engine system comprises an air inlet pipeline, an exhaust pipeline and a supercharger pinch roller; wherein the air intake conduit is disposed on an air intake side of the engine system, and air flows into the engine system through the air intake conduit; and
the EGR system is communicated with the air inlet pipeline and the exhaust pipeline and is used for introducing EGR gas of the exhaust pipeline into the air inlet pipeline;
the air inlet pipeline is provided with a heating device, mixed gas is formed by the air and the EGR gas in front of the heating device and then flows into the heating device, so that the temperature of the mixed gas is heated to be higher than the dew point temperature of the mixed gas by the heating device and then flows through the supercharger pinch roller.
Optionally, the heating device comprises:
the inner cavity is communicated with the air inlet pipeline and is used for circulating the mixed gas; and
and the outer cavity is arranged on the outer side of the inner cavity and used for circulating heating liquid to heat the mixed gas circulating at the inner cavity through heat exchange.
Optionally, the engine system comprises:
an engine; and
a cooling system provided outside the engine for circulating a coolant to cool the engine;
the outer cavity is communicated with the cooling system, so that the cooling liquid flowing out of the cooling system is used as the heating liquid to flow into the outer cavity to heat the mixed gas.
Optionally, the heating device further comprises:
the two ends of the liquid inlet pipe are respectively communicated with the cooling system and the outer cavity and used for introducing cooling liquid of the cooling system into the outer cavity;
the liquid outlet pipe is communicated with the outer cavity so that liquid in the outer cavity flows out; and
and the flow control valve is arranged at the liquid inlet pipe and used for adjusting the flow of the liquid entering the outer cavity.
Optionally, a temperature sensor is further disposed at the inner cavity and used for detecting temperature information of the mixed gas.
Optionally, the system further comprises a controller connected to the flow control valve and the temperature sensor, and configured to control an opening degree of the flow control valve according to the temperature information of the temperature sensor, so that the temperature of the mixed gas is heated to above the dew point temperature.
Optionally, the engine system further comprises:
the supercharger pinch roller, the intercooler, the throttle valve and the intake manifold are positioned in front of the engine; and
an exhaust manifold located after the engine, a supercharger turbine, and a catalyst.
Optionally, the engine system further comprises:
an air filter disposed at the air intake line for filtering air entering the engine system.
Optionally, the EGR system comprises:
an EGR line;
the EGR valve is arranged at the EGR pipeline and used for adjusting the gas flow of the EGR pipeline; and
an EGR cooler disposed at the EGR line for cooling the EGR gas of the EGR line.
Particularly, the utility model discloses still provide a vehicle, include above-mentioned engine low pressure EGR control system.
The utility model provides an engine low pressure EGR control system in the air inlet pipeline department of engine system mix the back with EGR gas and air and flow through the booster pinch roller after heating to dew point temperature more than, and then let in engine system. Because the mixed gas is heated to the temperature above the dew point, and the water vapor above the dew point can not be separated out to form condensed water, the condensed water can not appear after the air and the EGR gas are mixed, and the damage to the supercharger pinch roller is reduced when the mixed gas flows through the supercharger pinch roller.
Further, the utility model discloses in only having solved the problem that the comdenstion water caused the damage to the booster pinch roller through increasing heating device, need not restriction EGR's service condition, full play the energy saving and emission reduction effect of EGR technique, be favorable to environmental protection.
Further, the utility model discloses in do not have the comdenstion water in the blender owing to flow through the booster pinch roller, consequently also need not to carry out redesign to the booster pinch roller, reduced the unnecessary expense.
Further, the utility model discloses well heating device's heating liquid comes from the coolant liquid that flows out in carrying out refrigerated cooling system for the engine, and the coolant liquid among this cooling system is higher owing to carry out the heat exchange after the temperature with the engine, can provide the heat source for heating the gas mixture, need not additionally to provide the heat source, reduces energy loss.
The above and other objects, advantages and features of the present invention will become more apparent to those skilled in the art from the following detailed description of specific embodiments thereof, taken in conjunction with the accompanying drawings.
Drawings
Some specific embodiments of the present invention will be described in detail hereinafter, by way of illustration and not by way of limitation, with reference to the accompanying drawings. The same reference numbers in the drawings identify the same or similar elements or components. Those skilled in the art will appreciate that the drawings are not necessarily drawn to scale. In the drawings:
FIG. 1 is a schematic block diagram of an engine low pressure EGR control system according to an embodiment of the present disclosure;
fig. 2 is a schematic block diagram of a cooling system, a heating device, and a controller connection according to an embodiment of the present invention.
Detailed Description
Fig. 1 is a schematic block diagram of an engine low pressure EGR control system 100 according to an embodiment of the present invention. The present embodiment provides an engine low pressure EGR control system 100. The engine low pressure EGR control system 100 may include an engine system 110 and an EGR system 120. The engine system 110 may include, among other things, an intake line 101, an exhaust line 102, and a supercharger puck 5. Wherein the air intake line 101 is arranged on the air intake side of the engine system 110, and air flows from the air intake line 101 into the engine system 110. The EGR system 120 communicates with the intake line 101 and the exhaust line 102 for introducing EGR gas of the exhaust line 102 into the intake line 101. Wherein, the air inlet pipeline 101 is provided with a heating device 4, and the air and the EGR gas form mixed gas before the heating device 4 and then flow into the heating device 4, so that the temperature of the mixed gas is heated to be above the dew point temperature by the heating device 4 and then flows through the supercharger pinch roller 5.
In the engine low-pressure EGR control system 100 in this embodiment, EGR gas and air are mixed at the intake pipe 101 of the engine system 110, and then flow through the supercharger pressure wheel 5 after being heated to a temperature higher than the dew point temperature, and further flow into the engine system 110. Because the mixed gas is heated to the dew point temperature or above, and when the temperature of the mixed gas is above the dew point, the water vapor in the mixed gas can not be separated out to form condensed water, and therefore, the condensed water can not damage the booster pinch roller 5 when the mixed gas flows through the booster pinch roller 5. In addition, in the embodiment, the problem that the supercharger pinch roller 5 is damaged by condensed water is solved only by adding the heating device 4 in the system, the use condition of the EGR system is not limited, the energy-saving and emission-reducing effects of the EGR technology are fully exerted, and the environmental protection is facilitated. In addition, in the embodiment, because no condensed water exists in the mixer flowing through the booster pinch roller 5, the booster pinch roller 5 does not need to be redesigned, and unnecessary cost is reduced.
As a specific embodiment of the present invention, the heating device 4 in this embodiment may include an inner cavity 41 and an outer cavity 42, wherein the inner cavity 41 may be communicated with the air intake pipeline 101 for circulating the mixed gas. The outer chamber 42 is disposed outside the inner chamber 41, and is configured to circulate a heating liquid to heat the mixed gas circulating at the inner chamber 41 by exchanging heat with the mixed gas.
In this embodiment, the heating device 4 is externally supplied with the heating liquid to heat the mixed gas flowing through the heating device 4, so as to ensure that the mixed gas is heated to a temperature above the dew point, and further ensure that the mixed gas does not generate condensed water.
Fig. 2 is a schematic block diagram of a cooling system, a heating device, and a controller connection according to an embodiment of the present invention. As a specific embodiment of the present invention, the engine system 110 in the present embodiment may include an engine 11 and a cooling system 103. The cooling system 103 is disposed outside the engine 11 and circulates a coolant to cool the engine 11. The outer cavity 42 is communicated with the cooling system 103, so that the cooling liquid flowing out of the cooling system 103 is used as heating liquid and flows into the outer cavity 42 to heat the mixed gas.
In this embodiment, the heating liquid of the heating device 4 is derived from the coolant flowing out of the cooling system 103 for cooling the engine 11, and the coolant in the cooling system 103 has a high temperature after exchanging heat with the engine 11, so that a heat source can be provided for heating the mixed gas, and no additional heat source is needed, thereby reducing energy loss.
As a specific embodiment of the present invention, the heating device 4 in this embodiment may further include a liquid inlet pipe 17, a liquid outlet pipe 2 and a flow control valve 15. The two ends of the liquid inlet pipe 17 are respectively communicated with the cooling system 103 and the outer cavity 42, and the liquid inlet pipe is used for introducing the cooling liquid of the cooling system 103 into the outer cavity 42. The liquid outlet pipe 2 is communicated with the outer cavity 42, so that the liquid in the outer cavity 42 flows out. A flow control valve 15 is provided at the liquid inlet pipe 17 for regulating the flow of liquid into the outer chamber 42.
Because the temperature of the coolant after cooling the engine 11 is high, and the temperature of the mixed gas does not need to be too high, the flow of the coolant needs to be regulated, so that not only is the temperature of the mixed gas after heat exchange with the coolant prevented from being too low and not reaching the dew point temperature, and therefore condensed water is separated out, but also the temperature of the mixed gas after heat exchange with the coolant is prevented from being too high, and the temperature of the gas entering the engine 11 is prevented from being too high, so that the engine system 110 is damaged.
As a specific embodiment of the present invention, the inner cavity 41 in this embodiment is further provided with a temperature sensor 3 for detecting the temperature information of the mixed gas.
As a specific embodiment of the present invention, the engine low pressure EGR control system 100 in this embodiment may further include a controller 16, and the controller 16 is connected to the flow control valve 15 and the temperature sensor 3, and is used for controlling the opening degree of the flow control valve 15 according to the temperature information of the temperature sensor 3, so that the temperature of the mixed gas is heated to above the preset temperature.
As a specific embodiment of the present invention, the engine system 110 in this embodiment may further include a supercharger pinch roller 5, an intercooler 14, a throttle 13, and an intake manifold 12 located in front of the engine 11. The engine system 110 may also include an exhaust manifold 10 located after the engine 11, a supercharger turbine 6, and a catalyst 9. The engine system 110 may also include an air cleaner 1 disposed at the air intake line 101 for filtering air entering the engine system 110.
As a specific example of the present invention, the EGR system 120 in this example may include an EGR line 121, an EGR valve 7, and an EGR cooler 8. An EGR valve 7 is provided at the EGR line 121 for adjusting the gas flow rate of the EGR line 121. The EGR cooler 8 is provided at the EGR line 121 for cooling the EGR gas of the EGR line 121.
Specifically, as shown in fig. 1, the leftmost air of the intake pipe 101 enters, then passes through the air cleaner 1, and then is mixed with the EGR gas flowing out of the EGR system 120, and the mixed gas enters into the heating device 4 together, and the mixed gas is heated by the heating device 4. After being heated to above the dew point, the mixed gas passes through the supercharger pinch roller 5, passes through the intercooler 14 and the throttle valve 13, and then enters the engine 11 from the intake manifold 12. The gas from the engine 11 passes through the exhaust manifold 10, then flows through the turbocharger turbine 6, then flows through the catalyst 9, and then is divided into two paths, one path is directly introduced into the atmosphere, and the other path flows through the EGR pipeline 121, passes through the EGR cooler 8 and the EGR valve in sequence, and then is introduced into the air inlet pipeline 101 to be mixed with the air.
The controller 16 is connected to the temperature sensor 3 and the flow control valve 15. The temperature information of the mixed gas detected by the temperature sensor 3 is compared with the dew point temperature information of the mixed gas calculated in advance to control the flow control valve 15, thereby adjusting the flow rate of the coolant and thus the temperature of the mixed gas.
As a specific example, after the exhaust gas passes through the catalyst 9, assuming that the temperature is 500 ℃, a small amount of EGR gas is cooled by the EGR cooler 8 by the adjustment of the EGR valve 7, assuming that the temperature is 100 ℃, and mixed with fresh air, assuming that the temperature of the fresh air is 10 ℃, and the temperature of the mixed gas is 15 ℃, the temperature sensor 3 detects the temperature of the mixed gas, and feeds back the temperature information to the controller 16, the controller 16 calculates the dew point temperature of the condensed water of the mixed gas according to the moisture content of the fresh air and the EGR gas, and if the dew point temperature is 20 ℃, the controller 16 outputs a signal to the flow control valve 15, adjusts the flow rate of the coolant entering the heating device 4 (assuming that the temperature of the coolant is 85 ℃), and heats the mixed gas until the temperature of the mixed gas reaches the dew point temperature of the condensed water.
As a specific example of the present invention, the present embodiment also provides a vehicle that may include the above engine low pressure EGR control system 100.
Thus, it should be appreciated by those skilled in the art that while a number of exemplary embodiments of the invention have been shown and described in detail herein, many other variations and modifications can be made, consistent with the principles of the invention, which are directly determined or derived from the disclosure herein, without departing from the spirit and scope of the invention. Accordingly, the scope of the present invention should be understood and interpreted to cover all such other variations or modifications.
Claims (10)
1. An engine low pressure EGR control system, comprising:
the engine system comprises an air inlet pipeline, an exhaust pipeline and a supercharger pinch roller; wherein the air intake conduit is disposed on an air intake side of the engine system, and air flows into the engine system through the air intake conduit; and
the EGR system is communicated with the air inlet pipeline and the exhaust pipeline and is used for introducing EGR gas of the exhaust pipeline into the air inlet pipeline;
the air inlet pipeline is provided with a heating device, mixed gas is formed by the air and the EGR gas in front of the heating device and then flows into the heating device, so that the temperature of the mixed gas is heated to be higher than the dew point temperature of the mixed gas by the heating device and then flows through the supercharger pinch roller.
2. The engine low pressure EGR control system of claim 1,
the heating device includes:
the inner cavity is communicated with the air inlet pipeline and is used for circulating the mixed gas; and
and the outer cavity is arranged on the outer side of the inner cavity and used for circulating heating liquid to heat the mixed gas circulating at the inner cavity through heat exchange.
3. The engine low pressure EGR control system according to claim 2,
the engine system includes:
an engine; and
a cooling system provided outside the engine for circulating a coolant to cool the engine;
the outer cavity is communicated with the cooling system, so that the cooling liquid flowing out of the cooling system is used as the heating liquid to flow into the outer cavity to heat the mixed gas.
4. The engine low pressure EGR control system of claim 3,
the heating device further includes:
the two ends of the liquid inlet pipe are respectively communicated with the cooling system and the outer cavity and used for introducing cooling liquid of the cooling system into the outer cavity;
the liquid outlet pipe is communicated with the outer cavity so that liquid in the outer cavity flows out; and
and the flow control valve is arranged at the liquid inlet pipe and used for adjusting the flow of the liquid entering the outer cavity.
5. The engine low pressure EGR control system of claim 4,
and the inner cavity is also provided with a temperature sensor for detecting the temperature information of the mixed gas.
6. The engine low pressure EGR control system of claim 5,
the controller is connected with the flow control valve and the temperature sensor and used for controlling the opening degree of the flow control valve according to the temperature information of the temperature sensor, so that the temperature of the mixed gas is heated to be higher than the dew point temperature.
7. Engine low pressure EGR control system according to any of claims 1-6,
the engine system further includes:
the supercharger pinch roller, the intercooler, the throttle valve and the intake manifold are positioned in front of the engine; and
an exhaust manifold located after the engine, a supercharger turbine, and a catalyst.
8. Engine low pressure EGR control system according to any of claims 1-6,
the engine system further includes:
an air filter disposed at the air intake line for filtering air entering the engine system.
9. Engine low pressure EGR control system according to any of claims 1-6,
the EGR system includes:
an EGR line;
the EGR valve is arranged at the EGR pipeline and used for adjusting the gas flow of the EGR pipeline; and
an EGR cooler disposed at the EGR line for cooling the EGR gas of the EGR line.
10. A vehicle comprising an engine low pressure EGR control system as claimed in any one of claims 1-9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657517.XU CN215213736U (en) | 2021-07-21 | 2021-07-21 | Engine low pressure EGR control system and vehicle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121657517.XU CN215213736U (en) | 2021-07-21 | 2021-07-21 | Engine low pressure EGR control system and vehicle |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215213736U true CN215213736U (en) | 2021-12-17 |
Family
ID=79428070
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121657517.XU Active CN215213736U (en) | 2021-07-21 | 2021-07-21 | Engine low pressure EGR control system and vehicle |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215213736U (en) |
-
2021
- 2021-07-21 CN CN202121657517.XU patent/CN215213736U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP1754879B1 (en) | Exhaust gas recirculation system | |
| CN108397314B (en) | EGR cooling system, EGR system and EGR cooling system control method | |
| US7469691B2 (en) | Exhaust gas recirculation cooler bypass | |
| CN101542099B (en) | Device for recirculation of exhaust gases from a supercharged internal combustion engine | |
| US6216458B1 (en) | Exhaust gas recirculation system | |
| EP2357351B1 (en) | Exhaust gas recirculation (EGR) system and Power System | |
| CN1914412B (en) | Arrangement for cooling exhaust gas and charge air | |
| US7451748B2 (en) | EGR cooler system | |
| EP1886012B1 (en) | An arrangement for recirculation of exhaust gases of a supercharged internal combustion engine | |
| US20070039322A1 (en) | Exhaust gas recirculation system | |
| US20100242929A1 (en) | Arrangement and method for the return of exhaust gases in a combustion engine | |
| JP2004360692A (en) | Supercharge air intake device of internal-combustion engine | |
| JPS5893946A (en) | Apparatus for recirculating exhaust gas | |
| CN111102060B (en) | Turbocharged engine system and condensation control method therefor | |
| US7584748B2 (en) | Exhaust gas recirculation system for an internal combustion engine | |
| CN105587401B (en) | The cooling controller of internal combustion engine | |
| US7448368B2 (en) | Exhaust gas recirculation system for an internal combustion engine | |
| US11125190B2 (en) | Methods and system for an engine system | |
| KR20150074276A (en) | Engine Cooling System | |
| CN211549859U (en) | Range-extended vehicle EGR cooling system and vehicle | |
| CN215213736U (en) | Engine low pressure EGR control system and vehicle | |
| CN103790697A (en) | Method and equipment for preventing formation of condensation before compressor of diesel engine mounted in motor vehicle | |
| CN207420746U (en) | Cooling system for recycled exhaust gas, egr system and hybrid electric vehicle | |
| CN216198507U (en) | A low-pressure EGR control system and vehicle | |
| US9638139B2 (en) | Engine with coolant throttle and method for controlling the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20220325 Address after: 310051 No. 1760, Jiangling Road, Hangzhou, Zhejiang, Binjiang District Patentee after: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. Patentee after: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd. Patentee after: Yiwu Geely power assembly Co.,Ltd. Patentee after: Aurobay Technology Co.,Ltd. Address before: 322000 No.6 Jixiang Road, Chian Town, Yiwu City, Jinhua City, Zhejiang Province Patentee before: YIWU GEELY ENGINE Co.,Ltd. Patentee before: NINGBO GEELY ROYAL ENGINE COMPONENTS Co.,Ltd. Patentee before: Aurobay Technology Co.,Ltd. Patentee before: ZHEJIANG GEELY HOLDING GROUP Co.,Ltd. |
|
| TR01 | Transfer of patent right |