CN110985245A - Engine and exhaust gas circulation device thereof - Google Patents
Engine and exhaust gas circulation device thereof Download PDFInfo
- Publication number
- CN110985245A CN110985245A CN201911327996.6A CN201911327996A CN110985245A CN 110985245 A CN110985245 A CN 110985245A CN 201911327996 A CN201911327996 A CN 201911327996A CN 110985245 A CN110985245 A CN 110985245A
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- channel
- exhaust gas
- passage
- engine
- air inlet
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M26/13—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories
- F02M26/17—Arrangement or layout of EGR passages, e.g. in relation to specific engine parts or for incorporation of accessories in relation to the intake system
- F02M26/18—Thermal insulation or heat protection
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M26/00—Engine-pertinent apparatus for adding exhaust gases to combustion-air, main fuel or fuel-air mixture, e.g. by exhaust gas recirculation [EGR] systems
- F02M2026/001—Arrangements; Control features; Details
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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 Circulating Devices (AREA)
Abstract
The invention discloses an engine and an exhaust gas circulating device thereof, comprising: the air conditioner comprises a first channel (1), wherein the first end of the first channel (1) is an air inlet end, and the second end of the first channel (1) is provided with an air inlet heating grid (4); a second passage (2), wherein a first end of the second passage (2) is an air inlet end, a second end of the second passage (2) is connected with an EGR mixer (5), and the EGR mixer (5) is communicated with an exhaust gas outlet; the adjusting valve (3) is used for adjusting the on-off of the first channel (1) and the second channel (2), and the states of the first channel (1) and the second channel (2) are opposite. The air inlet heating grid and the EGR mixer are respectively arranged in the two channels, so that the contact between the waste gas and the air inlet heating grid can be avoided, and the icing of the moisture of the waste gas on the air inlet heating grid is effectively avoided.
Description
Technical Field
The invention relates to the technical field of power devices, in particular to an engine and an exhaust gas circulating device thereof.
Background
In order to ensure that the engine is well started at low temperature, a grille for heating air is arranged between the air inlet connecting pipe and the air inlet pipe, and the entering fresh air is heated through electrification and heating, so that the smooth starting of the engine is ensured.
Under the background of upgrading emission regulations, an engine adopts an EGR route, exhaust gas exhausted by combustion of the engine is guided to an air inlet connecting pipe, an EGR mixer is arranged on the air inlet connecting pipe, the exhaust gas and fresh air are uniformly mixed and then participate in combustion, and the original emission level of the engine can be improved, as shown in figure 1.
A conventional EGR mixer for exhaust gas recirculation is arranged in front of the heating grid. In a low-temperature environment, the moisture in the exhaust gas is very likely to freeze on the heating grid when the heating grid is not electrified due to the large amount of moisture in the exhaust gas. Even if the EGR valve is not opened, part of the exhaust gas leaks, and moisture in the leaked gas may freeze on the grill.
Therefore, how to provide an exhaust gas recirculation device to solve the problem of grid icing is an urgent technical problem to be solved in the field.
Disclosure of Invention
In view of the above, the present invention is directed to an exhaust gas recirculation device to solve the problem of grid icing. In addition, another object of the present invention is to provide an engine having the above exhaust gas circulation device.
In order to achieve the purpose, the invention provides the following technical scheme:
an exhaust gas recirculation apparatus, comprising:
the first end of the first channel is an air inlet end, and the second end of the first channel is provided with an air inlet heating grid;
the first end of the second passage is an air inlet end, the second end of the second passage is connected with an EGR mixer, and the EGR mixer is communicated with an exhaust gas outlet;
the regulating valve is used for regulating the on-off of the first channel and the second channel, and the states of the first channel and the second channel are opposite.
Preferably, in the above-described exhaust gas recirculation device, the first passage and the second passage are arranged in parallel, and a valve plate of the regulating valve is turnably mounted on a wall of the passage between the first passage and the second passage.
Preferably, the exhaust gas circulation device further includes a driving device for driving the valve plate to turn.
Preferably, the exhaust gas circulation device further comprises a control device for controlling the driving device to drive the valve plate to turn over,
when the engine is started at a low temperature and the intake air needs to be heated, the control device controls the valve plate to close the second channel and open the first channel;
when the engine is started and the intake air does not need to be heated, the control device controls the valve plate to open the second channel and close the first channel.
Preferably, in the above exhaust gas recirculation device, the regulating valves are disposed on both the first channel and the second channel, and both the regulating valves are solenoid valves.
An engine comprising an exhaust gas recirculation arrangement, wherein the exhaust gas recirculation arrangement is an engine as claimed in any preceding claim.
According to the exhaust gas circulation device disclosed by the invention, the air inlet heating grid and the EGR mixer are respectively arranged in the two channels, the on-off of the first channel and the second channel is controlled by the regulating valve, and the on-off states of the first channel and the second channel are ensured to be opposite. When the engine is used, when the engine is started at a low temperature, the first channel is opened, the second channel is closed, fresh air enters the air inlet heating grid for heating, and waste gas cannot enter the first channel, so that the waste gas cannot be frozen on the air inlet heating grid; after the engine is started, the first channel is closed, the second channel is opened, fresh air and waste gas enter the EGR mixer, and the waste gas cannot pass through the air inlet heating grid, so that the icing of the air inlet heating grid is avoided.
By the arrangement mode, the contact between the waste gas and the air inlet heating grid can be avoided, so that the moisture of the waste gas is effectively prevented from freezing on the air inlet heating grid.
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 are briefly introduced 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 configuration diagram of an exhaust gas recirculation apparatus disclosed in a prior art embodiment;
fig. 2 is a schematic structural view of an exhaust gas recirculation apparatus disclosed in an embodiment of the present invention.
Detailed Description
In view of the above, the core of the present invention is to disclose an exhaust gas recirculation device to solve the problem of grid icing. In addition, the other core of the invention is to disclose an engine with the exhaust gas circulation device.
In order that those skilled in the art will better understand the disclosure, the invention will be described in further detail with reference to the accompanying drawings and specific embodiments.
As shown in fig. 2, the present invention discloses an exhaust gas circulation device including a first passage 1 and a second passage 2. Wherein, the first ends of the first channel 1 and the second channel 2 are air inlet ends, that is, fresh air can enter the first channel 1 and the second channel 2. An intake air heater grill 4 is provided in the first passage 1 described above, and an EGR mixer 5 is provided in the second passage 2, and the EGR mixer 5 communicates with an exhaust gas outlet. In the application, the air inlet heating grid 4 and the EGR mixer 5 are respectively arranged in the two channels, and the on-off states of the first channel 1 and the second channel 2 are controlled by the regulating valve 3, and meanwhile, the on-off states of the first channel 1 and the second channel 2 are ensured to be opposite. According to the arrangement mode, when the engine is started at a low temperature in use, the first channel 1 is opened, the second channel 2 is closed, fresh air enters the air inlet heating grid 4 for heating, and exhaust gas cannot enter the first channel 1, so that the exhaust gas cannot be frozen on the air inlet heating grid 4; after the engine is started, the first channel 1 is closed, the second channel 2 is opened, fresh air and exhaust gas enter the EGR mixer 5, and the exhaust gas cannot pass through the air inlet heating grid 4, so that the icing of the air inlet heating grid 4 is avoided.
By the arrangement mode, the waste gas can be prevented from contacting the air inlet heating grid 4, so that the moisture of the waste gas is effectively prevented from freezing on the air inlet heating grid 4.
In a specific embodiment, the first passage 1 and the second passage 2 are arranged in parallel, and the valve plate of the regulating valve is turnably mounted on the wall of the passage between the first passage 1 and the second passage 2. For the first channel 1 and the second channel 2, a partition board may be disposed in the channels to separate the channels into two relatively independent channels, in practice, two separate channels may also be disposed, and the arrangement between the two channels may be set according to different requirements and is within the protection range. The valve plate of the regulating valve can be freely rotated and then, as required, closes one passage while opening the other passage, so that fresh air can be passed through the inlet heating grid 4 or the EGR mixer 5 as required. The type of the control valve 3 can be selected according to different requirements.
In a further embodiment, the exhaust gas recirculation device of the present application further comprises a driving device for driving the valve plate to turn. A driving device is adopted to provide power for the turnover of the valve plate, and meanwhile, the mechanical control is realized. The type of the driving device can be set according to different requirements, and the core of the driving device is that the driving device for closing the first channel 1 or the second channel 2 is in a protection range as long as two different states of the valve plate can be realized. In practice, the valve plate can be set as an electromagnet, coils are arranged in the first channel 1 and the second channel 2, and when the power supply current of the coils is reversed, the valve plate can be turned over.
On the basis of the technical scheme, the exhaust gas circulating device disclosed by the application further comprises a control device for controlling the driving device to drive the turnover position of the valve plate, and when the engine is started at a low temperature and the intake air needs to be heated, the control device controls the valve plate to close the second channel 2 and open the first channel 1; when the engine is started and the intake air does not need to be heated, the control device controls the valve plate to open the second channel 2 and close the first channel 1. The working state of the engine is detected through the control device, and the position of the valve plate is controlled according to the working state of the engine, so that automatic control is realized.
In another embodiment, the first channel 1 and the second channel 2 are both provided with the regulating valve 3, and both the regulating valves 3 are electromagnetic valves, that is, the on-off of the first channel 1 and the second channel 2 is controlled by two electromagnetic valves respectively. In practice, a circuit for the two solenoid valves may be provided to ensure that the two solenoid valves are in opposite states. Reference is made to the prior art for the arrangement of circuits.
In addition, the application also discloses an engine, which comprises an exhaust gas circulation device, wherein the exhaust gas circulation device is the exhaust gas circulation device disclosed in the embodiment, so that the engine with the exhaust gas circulation device also has all the technical effects, and the details are not repeated herein. The method is mainly applied to the four-valve diesel engine.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.
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 (6)
1. An exhaust gas recirculation apparatus, comprising:
the air conditioner comprises a first channel (1), wherein the first end of the first channel (1) is an air inlet end, and the second end of the first channel (1) is provided with an air inlet heating grid (4);
a second passage (2), wherein a first end of the second passage (2) is an air inlet end, a second end of the second passage (2) is connected with an EGR mixer (5), and the EGR mixer (5) is communicated with an exhaust gas outlet;
the adjusting valve (3) is used for adjusting the on-off of the first channel (1) and the second channel (2), and the states of the first channel (1) and the second channel (2) are opposite.
2. An exhaust gas circulation device according to claim 1, characterized in that the first passage (1) and the second passage (2) are arranged in parallel, and a valve plate of the regulating valve (3) is turnably mounted on a duct wall between the first passage (1) and the second passage (2).
3. The exhaust gas recirculation device according to claim 2, further comprising a driving device for driving the valve plate to turn.
4. The exhaust gas recirculation apparatus according to claim 3, further comprising a control device for controlling the drive device to drive the valve plate to the reversed position,
when the engine is started at a low temperature and the intake air needs to be heated, the control device controls the valve plate to close the second channel (2) and open the first channel (1);
when the engine is started and the intake air does not need to be heated, the control device controls the valve plate to open the second channel (2) and close the first channel (1).
5. An exhaust gas recirculation arrangement according to claim 2, characterized in that the regulating valve (3) is arranged on both the first channel (1) and the second channel (2), the regulating valve (3) being a solenoid valve.
6. An engine comprising an exhaust gas recirculation arrangement, wherein the exhaust gas recirculation arrangement is an engine according to any of claims 1-5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327996.6A CN110985245B (en) | 2019-12-20 | 2019-12-20 | Engine and exhaust gas circulation device thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911327996.6A CN110985245B (en) | 2019-12-20 | 2019-12-20 | Engine and exhaust gas circulation device thereof |
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| Publication Number | Publication Date |
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| CN110985245A true CN110985245A (en) | 2020-04-10 |
| CN110985245B CN110985245B (en) | 2021-02-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201911327996.6A Active CN110985245B (en) | 2019-12-20 | 2019-12-20 | Engine and exhaust gas circulation device thereof |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6044827A (en) * | 1997-06-18 | 2000-04-04 | Daimlerchrysler Ag | Exhaust gas recirculation arrangement |
| CN206017001U (en) * | 2016-08-29 | 2017-03-15 | 第一拖拉机股份有限公司 | A kind of air inlet pipe assembly for possessing charge heating function with EGR mixer |
| DE102016015762A1 (en) * | 2016-09-15 | 2018-03-15 | Eberspächer Climate Control Systems GmbH & Co. KG | Combustion assembly for a fuel-powered vehicle heater |
| CN207945026U (en) * | 2017-12-29 | 2018-10-09 | 潍柴动力股份有限公司 | EGR intake elbows and EGR gas handling systems |
| CN208169026U (en) * | 2018-05-02 | 2018-11-30 | 广西玉柴机器股份有限公司 | Engine charge connecting tube |
| CN109424476A (en) * | 2017-08-31 | 2019-03-05 | 爱三工业株式会社 | Inlet duct |
-
2019
- 2019-12-20 CN CN201911327996.6A patent/CN110985245B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6044827A (en) * | 1997-06-18 | 2000-04-04 | Daimlerchrysler Ag | Exhaust gas recirculation arrangement |
| CN206017001U (en) * | 2016-08-29 | 2017-03-15 | 第一拖拉机股份有限公司 | A kind of air inlet pipe assembly for possessing charge heating function with EGR mixer |
| DE102016015762A1 (en) * | 2016-09-15 | 2018-03-15 | Eberspächer Climate Control Systems GmbH & Co. KG | Combustion assembly for a fuel-powered vehicle heater |
| CN109424476A (en) * | 2017-08-31 | 2019-03-05 | 爱三工业株式会社 | Inlet duct |
| CN207945026U (en) * | 2017-12-29 | 2018-10-09 | 潍柴动力股份有限公司 | EGR intake elbows and EGR gas handling systems |
| CN208169026U (en) * | 2018-05-02 | 2018-11-30 | 广西玉柴机器股份有限公司 | Engine charge connecting tube |
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| CN110985245B (en) | 2021-02-23 |
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