CN212985401U - EGR valve assembly, EGR system and engine - Google Patents
EGR valve assembly, EGR system and engine Download PDFInfo
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- CN212985401U CN212985401U CN202021600332.0U CN202021600332U CN212985401U CN 212985401 U CN212985401 U CN 212985401U CN 202021600332 U CN202021600332 U CN 202021600332U CN 212985401 U CN212985401 U CN 212985401U
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Abstract
The utility model discloses a EGR valve module, EGR system, engine, this EGR valve module, include: the EGR valve is connected in series with the EGR pipeline; wherein, injection apparatus includes: the EGR valve comprises a spray head capable of spraying a water removing medium to the interior of the EGR valve and a conveying pipe communicated with the spray head and used for conveying the water removing medium. The utility model discloses a EGR valve module utilizes injection apparatus to spray water removal medium in to the EGR valve, utilizes water removal medium to take away the vapor in the EGR valve, has avoided the EGR valve to freeze in low temperature environment after the parking and has been frozen, has eliminated because of the mistake of reporting that the EGR valve produced is frozen and the limit is turned round, has guaranteed whole car normal operating in low temperature environment.
Description
Technical Field
The utility model relates to the technical field, more specifically say, relate to a EGR valve module, EGR system, engine.
Background
To achieve the six emissions state, more and more vehicles are being equipped with Exhaust Gas recirculation systems, EGR systems for short, the abbreviation of Exhaust Gas recirculation. The EGR system can introduce part of exhaust gas of the engine into an air inlet system of the engine again, so that the part of exhaust gas participates in combustion, the emission of nitrogen oxides can be reduced, and the emission level of a vehicle is improved.
For an engine having an EGR system, the flow rate of exhaust gas is controlled by controlling the opening degree of an EGR valve. However, in a low-temperature environment, such as a cold winter, after the vehicle is parked for a long time, water vapor in the residual exhaust gas in the pipeline may be condensed into ice, and a valve plate of the EGR valve may be frozen. When the EGR valve is started again, the frozen EGR valve cannot respond to the opening instruction of the engine controller, so that the problems of error reporting, torque limitation and the like are caused, and the normal operation of the whole vehicle is influenced.
In summary, those skilled in the art need to solve the above problems how to avoid the EGR valve from being frozen after the vehicle is stopped in a low temperature environment to eliminate the error reporting and torque limitation caused by the frozen EGR valve.
SUMMERY OF THE UTILITY MODEL
In view of this, the present invention provides an EGR valve assembly, which avoids the EGR valve being frozen after the vehicle is stopped in a low temperature environment, so as to eliminate the error reporting and the torque limitation caused by the frozen EGR valve. Another object of the utility model is to provide an EGR system and an engine that has above-mentioned EGR system of having above-mentioned EGR valve subassembly.
In order to achieve the above object, the utility model provides a following technical scheme:
an EGR valve assembly comprising: the EGR valve comprises an EGR pipeline, an injection device and an EGR valve which is connected to the EGR pipeline in series;
wherein the injection device comprises: the EGR valve comprises a spray head capable of spraying a water removing medium to the interior of the EGR valve, and a conveying pipe communicated with the spray head and used for conveying the water removing medium.
Preferably, the spray head is located in the EGR pipeline, and the spray head faces an EGR valve plate of the EGR valve.
Preferably, the spray head is positioned on one side of the EGR valve plate close to the inlet of the EGR valve.
Preferably, the delivery pipe extends within the EGR line.
Preferably, the spraying device further comprises a switch valve connected in series on the delivery pipe and used for controlling the on-off of the delivery pipe.
Preferably, the on-off valve is disposed on the EGR valve body or on the EGR pipe;
the delivery pipe includes: the first delivery pipe is communicated with the inlet of the switch valve, and the second delivery pipe is communicated with the outlet of the switch valve.
Preferably, the EGR valve assembly further comprises: the EGR valve control system comprises a first controller for controlling the opening and closing of the switching valve, and a second controller for controlling the opening degree of the EGR valve.
Preferably, the EGR valve assembly further comprises a reservoir in communication with the delivery pipe for storing the water scavenging medium.
Based on the EGR valve module that the aforesaid provided, the utility model also provides an EGR system, this EGR system include above-mentioned arbitrary EGR valve module.
Based on the EGR system that the aforesaid provided, the utility model also provides an engine, this engine include the EGR system, the EGR system is above-mentioned EGR system.
The utility model provides a use method of EGR valve module does: after the EGR valve is stopped, if the environmental temperature is lower than the preset value, the EGR valve is opened, the conveying pipe is enabled to convey the water removing medium, the spray head sprays the water removing medium to the interior of the EGR valve, the water vapor in the EGR valve is taken away by the water removing medium, and after the water vapor is removed, the spray head is stopped to spray the water removing medium and the EGR valve is closed.
The utility model provides a EGR valve module utilizes injection apparatus to spray water removal medium in to the EGR valve, utilizes water removal medium to take away the vapor in the EGR valve, has avoided the EGR valve to freeze in low temperature environment after the parking and has been frozen, has eliminated because of the mistake of reporting that the EGR valve produced is frozen and the limit is turned round, has guaranteed whole car normal operating in low temperature environment.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.
Fig. 1 is a schematic structural diagram of an EGR valve assembly according to an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1, an embodiment of the present invention provides an EGR valve assembly including: an EGR line 3, an injection device 2, and an EGR valve 1 connected in series to the EGR line 3.
The above-described injection device 2 includes: a spray head 21 capable of spraying a water removing medium into the EGR valve 1, and a delivery pipe communicating with the spray head 21 and delivering the water removing medium.
The specific structure of the spray head 21 is selected according to actual needs. Preferably, the head 21 is provided with an injection hole which controls the injection direction of the dewatering medium. The number and the injection direction of the injection holes are selected according to actual needs, and the embodiment does not limit the number and the injection direction.
The water removing medium may be high pressure air supplied from an air compressor of the engine. Of course, the water removing medium may be selected from other mediums as long as it can remove water vapor, and this embodiment is not limited thereto.
The type of the EGR valve 1 is selected according to actual needs, for example, the EGR valve 1 is a butterfly valve, as shown in fig. 1; the EGR valve 1 may be a poppet valve or other valve, which is not limited in this embodiment.
In fig. 1, the open arrowed lines indicate the flow direction of the EGR exhaust gas in the EGR line 3 and the EGR valve 1, and the solid arrowed lines indicate the flow direction of the water removing medium.
The embodiment of the utility model provides a use method of EGR valve module is: after the vehicle is stopped, if the environmental temperature is lower than the preset value, the EGR valve 1 is opened, the conveying pipe is enabled to convey the water removing medium, the spray head 21 sprays the water removing medium to the interior of the EGR valve 1, the water vapor in the EGR valve 1 is taken away by the water removing medium, and after the water vapor is removed, the spray head 21 is stopped spraying the water removing medium and the EGR valve 1 is closed.
In practical application, the EGR valve assembly may be used as needed, for example, after the vehicle is stopped, if the ambient temperature is lower than a preset value, the EGR valve 1 is opened to enable the delivery pipe to deliver the water removing medium and the spray head 21 to spray the water removing medium to the inside of the EGR valve 1, then the EGR valve 1 is opened and closed repeatedly for several times, and finally the spray head 21 is stopped to spray the water removing medium.
It will be appreciated that when not parked, the spraying device 2 is not required to spray the water-removing medium; when the ambient temperature is not less than the set value, the water removing medium does not need to be sprayed by the spraying device 2.
The embodiment of the utility model provides an EGR valve subassembly utilizes injection apparatus 2 to EGR valve 1's inside injection water removal medium, utilizes water removal medium to take away the vapor in EGR valve 1, has avoided the parking back EGR valve 1 freeze in low temperature environment and has been frozen, has eliminated because of the mistake of reporting and the limit button that EGR valve 1 was frozen and produced, has guaranteed whole car normal operating in low temperature environment.
In the EGR valve assembly described above, the nozzle head 21 is located in the EGR line 3 or the EGR valve body 11 of the EGR valve 1. In order to improve the water removal efficiency, the nozzle head 21 faces the EGR valve plate 12 of the EGR valve 1.
The water removal medium sprayed by the spray head 21 can reach the EGR valve plate 12 and take away the water vapor on the EGR valve plate 12. Preferably, the injection range of the nozzle head 21 covers the EGR valve sheet 12 to improve the efficiency and effect of removing water vapor. Of course, the injection range of the nozzle 21 may be selected not to cover the EGR valve plate 12, and the injection time may be increased appropriately to remove the water vapor.
In order to facilitate the removal of the water medium out of the EGR valve 1, the spray head 21 is located on the side of the EGR valve plate 12 close to the inlet of the EGR valve 1. Further, the entire injection device 2 is located on the side of the EGR valve sheet 12 close to the inlet of the EGR valve 1.
Of course, the injection device 2 may be located on the side of the EGR valve sheet 12 close to the outlet of the EGR valve 1, and is not limited to the above embodiment.
It is understood that the inlet of the EGR valve 1 refers to a valve port of the EGR valve 1 into which EGR exhaust gas enters, and the outlet of the EGR valve 1 refers to a valve port of the EGR valve 1 out which EGR exhaust gas flows.
In order to reduce the influence on the EGR valve 1, it is preferable to select the delivery pipe to extend into the EGR line 3, that is, the delivery pipe passes through the wall of the EGR line 3 from the outside of the EGR line 3 to reach the inside of the EGR line 3, and at this time, the nozzle 21 may be located inside the EGR line 3 or inside the EGR valve body 11.
Of course, the delivery pipe may be extended into the EGR valve body 11, that is, the delivery pipe passes through the wall of the EGR valve body 11 from the outside of the EGR valve body 11 to the inside of the EGR valve body 11, and in this case, the nozzle 21 may be located in the EGR pipeline 3 or in the EGR valve body 11.
In order to facilitate the control of whether the spraying device 2 sprays the water removing medium, the spraying device 2 further comprises a switch valve 24 which is connected in series with the conveying pipe and is used for controlling the on-off of the conveying pipe. Thus, when the switch valve 24 is opened and the delivery pipe is conducted, the delivery pipe delivers the dehydrating medium to the spray head 21; the on-off valve 24 is closed, the delivery pipe is not conducted, and the delivery of the dehydrating medium to the head 21 is stopped.
The on-off valve 24 may be directly mounted on the delivery pipe, or the on-off valve 24 may be selectively provided on the EGR valve body 11 or the EGR line 3. In order to improve the stability, it is preferable that the on-off valve 24 is provided on the EGR valve body 11 or the EGR line 3.
Specifically, the EGR valve body 11 or the EGR line 3 is provided with a mounting structure that mounts the on-off valve 24. The mounting structure has an input passage through which an inlet of the on-off valve 24 communicates with a pipe section of the delivery pipe, and an output passage through which an outlet of the on-off valve 24 communicates with the pipe section of the delivery pipe.
Preferably, the above-mentioned delivery pipe includes: a first delivery pipe 23 communicating with an inlet of the on-off valve 24, and a second delivery pipe 22 communicating with an outlet of the on-off valve 24. That is, the first delivery pipe 23 communicates with the inlet of the open-close valve 24 through the input passage, and the second delivery pipe 22 communicates with the outlet of the open-close valve 24 through the output passage.
It should be understood that the inlet of the on-off valve 24 refers to the valve port of the on-off valve 24 for the water medium to enter; the outlet of the on-off valve 24 refers to a valve port of the on-off valve 24 for the water medium to flow out.
If the on-off valve 24 is provided on the EGR valve body 11, the second delivery pipe 22 is located inside the EGR valve body 11, or a part of the second delivery pipe 22 is located inside the EGR valve body 11 and another part of the second delivery pipe 22 is located inside the EGR line 3; if the on-off valve 24 is provided on the EGR line 3, the second delivery pipe 22 is located in the EGR line 3, or a part of the second delivery pipe 22 is located in the EGR line 3 and another part of the second delivery pipe 22 is located in the EGR valve body 11.
In order to realize automatic control, the EGR valve assembly further includes: a first controller for controlling the opening and closing of the on-off valve 24, and a second controller for controlling the opening degree of the EGR valve 1. In order to simplify the structure, it is preferable that the first controller and the second controller are integrated. Specifically, the first controller and the second controller are integrated into the controller 5. Specifically, the controller 5 is an electronic engine control unit, which controls the normal operation of the engine and is provided with an ambient temperature sensor to detect the ambient temperature.
In order to further optimize the solution, the EGR valve assembly further comprises a reservoir 4 communicating with the duct and intended to store a water removing medium. Thus, the spraying device 2 can spray the dewatering medium conveniently, and the spraying of the dewatering medium is accelerated.
The type of the storage 4 is selected according to actual needs, for example, the storage 4 is a storage bottle, which is not limited in this embodiment.
When the water removal medium is high-pressure air, the air compressor of the engine is preferably selected to supply high-pressure air to the reservoir 4. The specific pressure value of the high-pressure air is set according to actual needs, which is not limited in this embodiment.
The operation is described below with reference to a specific construction of the EGR valve assembly:
the controller 5 monitors the running state of the engine, judges whether the engine stalls, when the engine stalls and the ambient temperature is lower than a set value, the controller 5 controls the EGR valve 1 to be opened fully, then controls the switch valve 24 to be opened, and sprays high-pressure air to the EGR valve plates 12 of the EGR valve 1 and all around and other directions, meanwhile, the controller 5 controls the EGR valve 1 to be closed and opened repeatedly and then controls the switch valve 24 to be closed, and spraying is stopped, so that the high-pressure air is ensured to blow the EGR valve plates 12 and all around water vapor cleanly, and freezing in a low-temperature environment is avoided.
Based on the EGR valve assembly provided in the foregoing embodiments, the present embodiment further provides an EGR system, which includes the EGR valve assembly described in the foregoing embodiments.
Because the EGR valve assembly provided by the above embodiment has the above technical effects, and the EGR system includes the above EGR valve assembly, the above EGR system also has corresponding technical effects, and details are not repeated herein.
Based on the EGR system provided in the foregoing embodiment, the present embodiment further provides an engine, which includes the EGR system provided in the foregoing embodiment.
Since the EGR system provided by the above embodiment has the above technical effects, and the engine includes the above EGR system, the engine also has corresponding technical effects, and details are not repeated herein.
The type of the engine is selected according to actual needs, for example, the engine is a gas engine, which is not limited in this embodiment.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. An EGR valve assembly, comprising: the EGR system comprises an EGR pipeline (3), an injection device (2) and an EGR valve (1) which is connected to the EGR pipeline (3) in series;
wherein the injection device (2) comprises: a spray head (21) capable of spraying a water removing medium into the interior of the EGR valve (1), and a delivery pipe communicating with the spray head (21) and for delivering the water removing medium.
2. The EGR valve assembly of claim 1 wherein the spray head (21) is located within the EGR line (3) with the spray head (21) facing an EGR vane (12) of the EGR valve (1).
3. The EGR valve assembly of claim 1 wherein the spray head (21) is located on a side of the EGR valve plate (12) adjacent an inlet of the EGR valve (1).
4. An EGR valve assembly according to claim 1, wherein the delivery pipe extends inside the EGR line (3).
5. An EGR valve assembly according to claim 1, characterized in that the injection device (2) further comprises a switch valve (24) connected in series to the delivery pipe and adapted to control the opening and closing of the delivery pipe.
6. The EGR valve assembly according to claim 5, characterized in that the on-off valve (24) is provided on the EGR valve body (11) or on the EGR line (3);
the delivery pipe includes: a first delivery pipe (23) communicating with an inlet of the on-off valve (24), and a second delivery pipe (22) communicating with an outlet of the on-off valve (24).
7. The EGR valve assembly according to claim 5, further comprising: a first controller for controlling the opening and closing of the on-off valve (24), and a second controller for controlling the opening degree of the EGR valve (1).
8. An EGR valve assembly according to any of claims 1-7, further comprising a reservoir (4) communicating with the delivery pipe and for storing the water scavenging medium.
9. An EGR system comprising an EGR valve assembly according to any of claims 1-8.
10. An engine comprising an EGR system, wherein the EGR system is the EGR system of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021600332.0U CN212985401U (en) | 2020-08-04 | 2020-08-04 | EGR valve assembly, EGR system and engine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021600332.0U CN212985401U (en) | 2020-08-04 | 2020-08-04 | EGR valve assembly, EGR system and engine |
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| CN212985401U true CN212985401U (en) | 2021-04-16 |
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| CN202021600332.0U Active CN212985401U (en) | 2020-08-04 | 2020-08-04 | EGR valve assembly, EGR system and engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352445A (en) * | 2021-12-14 | 2022-04-15 | 潍柴动力股份有限公司 | EGR valve assembly, engine with EGR valve assembly and control method of engine |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114352445A (en) * | 2021-12-14 | 2022-04-15 | 潍柴动力股份有限公司 | EGR valve assembly, engine with EGR valve assembly and control method of engine |
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