CN203717168U - Engine, as well as exhaust gas recirculation system and exhaust manifold thereof - Google Patents
Engine, as well as exhaust gas recirculation system and exhaust manifold thereof Download PDFInfo
- Publication number
- CN203717168U CN203717168U CN201320828252.4U CN201320828252U CN203717168U CN 203717168 U CN203717168 U CN 203717168U CN 201320828252 U CN201320828252 U CN 201320828252U CN 203717168 U CN203717168 U CN 203717168U
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- China
- Prior art keywords
- gas
- recirculation system
- exhaust manifold
- gas recirculation
- exhaust
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- 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.)
- Expired - Lifetime
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- 230000009286 beneficial effect Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 130
- 239000002912 waste gas Substances 0.000 description 26
- 238000000034 method Methods 0.000 description 14
- 230000000694 effects Effects 0.000 description 8
- 238000002485 combustion reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000003134 recirculating effect Effects 0.000 description 3
- 239000012141 concentrate Substances 0.000 description 2
- 230000007812 deficiency Effects 0.000 description 2
- 238000010304 firing Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012958 reprocessing Methods 0.000 description 1
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model discloses an engine, as well as an exhaust gas recirculation system and an exhaust manifold thereof. The exhaust manifold is provided with a plurality of air inlets opposite to a cylinder of the engine; the exhaust manifold is provided with a single channel; a plurality of air inlets are formed at one side of the channel; the signal channel is further provided with a first exhaust port and a second exhaust port which are communicated with a pressurizer and an EGR (exhaust gas recirculation) valve of the system. Compared with the exhaust manifold comprising double channels in the prior art, the exhaust manifold integrates the exhaust gas in each independent cylinder in one channel, and then supplies to the EGR valve and the pressurizer through the two exhaust ports, so that the phenomenon of unevenly taking gas can be avoided; the stability of the exhaust gas recirculation system can be guaranteed; the exhaust manifold is beneficial for the engine to stably burn. Furthermore, through the exhaust manifold with the structure, the amount of the recirculation exhaust gas is increased, and the ERG ratio of the exhaust gas recirculation system is greatly improved.
Description
Technical field
The utility model relates to technical field of engines, relates in particular to a kind of motor and gas recirculation system thereof, gas exhaust manifold.
Background technique
Gas recirculation system (Exhaust Gas Recirculation) is called for short EGR, refers to that the part waste gas that motor is discharged is transmitted back to intake manifold, and again enter cylinder together with incoming mixture.Owing to containing a large amount of CO2 in waste gas, and CO2 can not burn and absorbs a large amount of heat, and the combustion temperature of mixed gas in cylinder is reduced, thereby has reduced the growing amount of NOx.
Please refer to Fig. 1 and Fig. 2, Fig. 1 is the structural representation of gas recirculation system in prior art, and Fig. 2 is the structural representation of the gas exhaust manifold in Fig. 1; 6 Cylinder engines of take below briefly introduce the working procedure of this system and the technological deficiency existing thereof as example.
As shown in Figure 1, in prior art gas recirculation system comprise gas exhaust manifold 1 ', pressurized machine 3 ', EGR valve 2 ', cooler for recycled exhaust gas 4 ', air inlet tube 5 ', intake-air throttle valve 6 ', mixer 7 ' and intake manifold 8 '.
In working procedure, motor by waste gas enter gas exhaust manifold 1 ', gas exhaust manifold 1 ' interior a part of waste gas enter pressurized machine 3 ', and then enter atmosphere or carry out reprocessing, another part waste gas is through EGR valve 2 ' enter cooler for recycled exhaust gas 4 ' carry out cooling, cooled waste gas enter mixer 7 ', meanwhile, outside fresh air also by intake-air throttle valve 6 ' enter air inlet tube 5 ', this part waste gas and fresh air flow into mixer 7 ' after inside fully mixing, enter again intake manifold 8 ', finally enter cylinder body.
There is following technological deficiency in above-mentioned gas recirculation system:
First, as shown in Figure 2, above-mentioned gas exhaust manifold 1 ' be double flow channel gas exhaust manifold, a side of each runner arrange be communicated with the suction port 11 of three cylinders ', opposite side sets out gas port.In working procedure, the waste gas of 1 cylinder, 2 cylinders and 3 cylinders enters one of them runner, through first row gas port 12 ', the 3rd relief opening 14 ' outflow, the waste gas of 4 cylinders, 5 cylinders and 6 cylinders enters another one runner, through second row gas port 13 ' outflow.Wherein, first row gas port 12 ' with pressurized machine 3 ' be communicated with, the 3rd relief opening 14 ' with EGR valve 2 ' be communicated with, second row gas port 13 ' with pressurized machine 3 ' be communicated with.Therefore a part for the waste gas of 1 cylinder, 2 cylinders and 3 cylinders enter pressurized machine 3 ', another part enters gas recirculation system, the waste gas of 4 cylinders, 5 cylinders and 6 cylinders all enter pressurized machine 3 ', have neither part nor lot in gas recirculation system.
As can be seen here, it is inhomogeneous that this structure causes each cylinder to get gas, and then cause each cylinder working inhomogeneous, so the burning stationarity of motor is poor.In addition, the EGR of above-mentioned gas recirculation system lead (enter air inlet tube 5 ' exhaust mass with enter the ratio of total gaseous mass of cylinder) lower.
Secondly, in above-mentioned recirculating system, mixer 7 ' play the effect of mix waste gas and fresh air, but mixer 7 ' expensive, cause the cost of gas recirculation system higher.And can increase intake resistance, engine consumption is increased.
In view of this, urgently for above-mentioned technical problem, gas recirculation system of the prior art is optimized to design, so that each cylinder of motor is got gas is even, improves the burning stationarity of motor, and reduce the cost of recirculating system.
Model utility content
The purpose of this utility model is for providing a kind of motor and gas recirculation system thereof, gas exhaust manifold, this gas exhaust manifold has single channel structure, realize each cylinder and evenly got gas, having improved EGR leads, and gas recirculation system has guaranteed gas mixing uniformity by lengthening air inlet tube, has reduced cost of production.
For solving the problems of the technologies described above, the utility model provides a kind of gas exhaust manifold of gas recirculation system, be provided with suction port corresponding to cylinder a plurality of and described motor, described gas exhaust manifold has single channel, a plurality of described suction ports are located at a side of described runner, and described single channel is also provided with respectively and the pressurized machine of system, first row gas port, the second row gas port that EGR valve is communicated with.
In working procedure, the waste gas that discharge each cylinder firing chamber respectively by six independently suction port enter the single channel of gas exhaust manifold, in this runner, collect, the waste gas after collecting flows to respectively pressurized machine, EGR valve by two relief openings.
Comprise the gas exhaust manifold of double flow channel with prior art, this gas exhaust manifold first by each independently in cylinder waste gas concentrate on a runner, and supply with respectively EGR valve, supply with pressurized machine by two relief openings, thereby avoided each cylinder to get gas non-uniform phenomenon, the stability that has guaranteed gas recirculation system, is conducive to engine combustion steady.In addition, the gas exhaust manifold of this structure has increased the waste gas total amount that participates in circulation, and the EGR that has greatly improved gas recirculation system leads.
The utility model also provides a kind of gas recirculation system, comprises gas exhaust manifold, the pressurized machine being communicated with described gas exhaust manifold, EGR valve; Described gas exhaust manifold adopts structure as above.
Preferably, described pressurized machine is variable cross-section pressure booster.
Preferably, also comprise the cooler for recycled exhaust gas, air inlet tube and the intake manifold that are communicated with successively, described cooler for recycled exhaust gas is communicated with described EGR valve, and described air inlet tube is the open to atmosphere air intlet of the company of being provided with also, and described air intlet is greater than 300mm to the distance of described intake manifold.
Preferably, described EGR valve is removably fixedly connected with described gas exhaust manifold by bolt fastener.
Preferably, the two ends of described cooler for recycled exhaust gas are communicated with described EGR valve, described air inlet tube respectively by expansion joint.
Preferably, also comprise intake-air throttle valve, the air intlet of described air inlet tube is communicated with atmosphere by described intake-air throttle valve.
The utility model also provides a kind of motor, comprises cylinder body and gas recirculation system, and the gas exhaust manifold of described gas recirculation system is connected with the exhaust valve of described cylinder body; Described gas recirculation system adopts structure as above.
Because above-mentioned gas exhaust manifold has as above technique effect, therefore, comprise that the gas recirculation system of this gas exhaust manifold, motor also should have identical technique effect, do not repeat them here.
Accompanying drawing explanation
Fig. 1 is the block diagram of gas recirculation system in prior art;
Fig. 2 is the structural representation of gas exhaust manifold in Fig. 1;
The structural representation of a kind of embodiment that Fig. 3 is gas exhaust manifold that the utility model provides;
The structural representation of a kind of embodiment that Fig. 4 is gas recirculation system that the utility model provides;
Fig. 5 is the block diagram of Fig. 4.
Wherein, the reference character in Fig. 1 and Fig. 2 and the corresponding relation between component names are:
Gas exhaust manifold 1 '; Suction port 11 '; First row gas port 12 '; Second row gas port 13 '; The 3rd relief opening 14 '; EGR valve 2 '; Pressurized machine 3 '; Cooler for recycled exhaust gas 4 '; Air inlet tube 5 '; Intake-air throttle valve 6 '; Mixer 7 '; Intake manifold 8 ';
Reference character and the corresponding relation between component names in Fig. 3 to Fig. 5 are:
Gas exhaust manifold 1; Suction port 11; First row gas port 12; Second row gas port 13;
EGR valve 2; Pressurized machine 3; Cooler for recycled exhaust gas 4; Expansion joint 41; Air inlet tube 5; Intake-air throttle valve 6; Intake manifold 7.
Embodiment
Core of the present utility model is for a kind of motor and gas recirculation system thereof, gas exhaust manifold are provided, and this gas exhaust manifold has single channel and has two relief openings that connect pressurized machine, EGR valve, makes to get gas even, and improved EGR and lead.
In order to make those skilled in the art understand better the technical solution of the utility model, below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Please refer to Fig. 3, the structural representation of a kind of embodiment that Fig. 3 is gas exhaust manifold that the utility model provides.
In a kind of embodiment, as shown in Figure 3, the utility model provides a kind of gas exhaust manifold 1 for engine exhaust-gas recirculating system, this gas exhaust manifold 1 has single channel, one side of this single channel is provided with suction port 11 corresponding to cylinder a plurality of and motor, single channel is also provided with first row gas port 12, second row gas port 13, and first row gas port 12 is communicated with the pressurized machine 3 of system, second row gas port 13 is communicated with EGR valve 2.
6 Cylinder engines of take below are specifically introduced the working procedure of this gas exhaust manifold 1 as example:
In working procedure, the waste gas that discharge 1 cylinder, 2 cylinders, 3 cylinders, 4 cylinders, 5 cylinders and 6 cylinder firing chambers respectively by six independently suction port 11 enter the single channel of gas exhaust manifold 1, in this runner, collect, the waste gas after collecting is flowed to pressurized machine 3, by second row gas port 13, is flowed to EGR valve 2 by first row gas port 12.
The gas exhaust manifold 1 that comprises double flow channel with prior art is compared, this gas exhaust manifold 1 first by each independently in cylinder waste gas concentrate on a runner, and supply with respectively EGR valve 2 and pressurized machine 3 by two relief openings, what thereby the portion gas of having avoided 1 cylinder, 2 cylinders, 3 cylinders entered that the waste gas of EGR valve, 4 cylinders, 5 cylinders and 6 cylinders do not enter EGR valve 2 gets gas non-uniform phenomenon, thereby the stability that has guaranteed gas recirculation system, is conducive to engine combustion steady.In addition, the gas exhaust manifold 1 of this structure has increased the waste gas total amount that participates in circulation, and the EGR that has greatly improved gas recirculation system leads.
Please refer to Fig. 4 and Fig. 5, the structural representation of a kind of embodiment that Fig. 4 is gas recirculation system that the utility model provides, the block diagram that Fig. 5 is Fig. 4.
The utility model also provides a kind of gas recirculation system, as shown in Figure 4 and Figure 5, this system comprises gas exhaust manifold 1, the pressurized machine 3 being communicated with gas exhaust manifold 1, EGR valve 2, EGR valve 2 connects cooler for recycled exhaust gas 4, cooler for recycled exhaust gas 4 connects air inlet tube 5, air inlet tube 5 gathers fresh airs by air intlet 51, and the mixed gas of waste gas and fresh air is exported to intake manifold 7, intake manifold 7 again by mixed gas delivery to each cylinder.Wherein, the structure that gas exhaust manifold 1 adopts as above.
Because above-mentioned gas exhaust manifold 1 has technique effect as above, therefore, comprise that the gas recirculation system of this gas exhaust manifold 1 also should have identical technique effect, do not repeat them here.
All right further other structures of gas recirculation system.
In another kind of embodiment, above-mentioned pressurized machine 3 is variable cross-section pressure booster 3.
Adopt this structure, by changing the section area of pressurized machine 3, can regulate the exhaust gas flow that enters pressurized machine 3, waste gas Yi road connection pressurized machine 3, another road connection EGR valve 2 due to gas exhaust manifold 1, therefore, under the constant prerequisite of waste gas total amount, can regulate the exhaust gas volume that enter EGR valve 2 by changing the cross section of pressurized machine 3, thereby strengthen the flexibility of gas recirculation system.
In another embodiment, the air intlet 51 of the air inlet tube 5 of above-mentioned gas recirculation system is greater than 300mm to the distance of intake manifold 7.
Adopt this structure, compare with the gas recirculation system of prior art, the waste gas of air inlet tube 5 and fresh air intersection lengthen to the length of intake manifold 7, therefore waste gas and fresh air can fully mix air inlet tube 5 is interior, longer air inlet tube 5 has played the effect identical with mixer, therefore without air inlet tube 5 again, with the intersection of intake-air throttle valve 6, mixer is set, has greatly saved the cost of gas recirculation system.And can reduce intake resistance, engine consumption is reduced.
In another concrete scheme, as shown in Figure 4, above-mentioned EGR valve 2 is removably fixedly connected with gas exhaust manifold 1 by bolt fastener.
Adopt this structure, realize simply, easily the location of EGR valve 2 and gas exhaust manifold 1, can also effectively reduce the vibrations of EGR valve 2, improve system reliability.
In scheme, as shown in Figure 4, the two ends of above-mentioned cooler for recycled exhaust gas 4 are communicated with EGR valve 2, air inlet tube 5 respectively by expansion joint 41 more specifically.
Adopt this structure, expansion joint 41 can regulate the axial dimension of pipeline, to avoid the pipeline generation moderate finite deformation that is heated, further improves the reliability of gas recirculation system.
In another kind of mode of execution, as shown in Figure 4 and Figure 5, above-mentioned gas recirculation system also comprises intake-air throttle valve 6, and the air intlet 51 of described air inlet tube 5 is communicated with atmosphere by described intake-air throttle valve 6.
Adopt this structure, by change the valve port size of intake-air throttle valve 6, can regulate enter air inlet tube 5 amount of fresh air number, make the adjustment of EGR control system and control more convenient and flexible.
The utility model also provides a kind of motor, comprises cylinder body and gas recirculation system, and the gas exhaust manifold 1 of gas recirculation system is connected with the exhaust valve of cylinder body, and it adopts structure as above.
Because above-mentioned gas recirculation system has as above technique effect, therefore, comprise that the motor of this gas recirculation system also should have identical technique effect, do not repeat them here.
Above a kind of motor provided by the utility model and gas recirculation system thereof, gas exhaust manifold are described in detail.Applied specific case herein principle of the present utility model and mode of execution are set forth, above embodiment's explanation is just for helping to understand method of the present utility model and core concept thereof.Should be understood that; for those skilled in the art; do not departing under the prerequisite of the utility model principle, can also carry out some improvement and modification to the utility model, these improvement and modification also fall in the protection domain of the utility model claim.
Claims (8)
1. the gas exhaust manifold of a gas recirculation system, be provided with the suction port (11) that cylinder a plurality of and described motor is corresponding, it is characterized in that, described gas exhaust manifold (1) has single channel, a plurality of described suction ports (11) are located at a side of described runner, and described single channel is also provided with respectively and the pressurized machine (3) of system, first row gas port (12), the second row gas port (13) that EGR valve (2) is communicated with.
2. a gas recirculation system, comprises gas exhaust manifold (1), the pressurized machine (3) being communicated with described gas exhaust manifold (1), EGR valve (2); It is characterized in that, described gas exhaust manifold (1) adopts structure as claimed in claim 1.
3. gas recirculation system according to claim 2, is characterized in that, described pressurized machine (3) is variable cross-section pressure booster.
4. according to the gas recirculation system described in claim 2 or 3, it is characterized in that, also comprise the cooler for recycled exhaust gas (4), air inlet tube (5) and the intake manifold (7) that are communicated with successively, described cooler for recycled exhaust gas (4) is communicated with described EGR valve (2), described air inlet tube (5) is the open to atmosphere air intlet of the company of being provided with (51) also, and described air intlet (51) is greater than 300mm to the distance of described intake manifold (7).
5. gas recirculation system according to claim 4, is characterized in that, described EGR valve (2) is removably fixedly connected with described gas exhaust manifold (1) by bolt fastener.
6. gas recirculation system according to claim 5, is characterized in that, the two ends of described cooler for recycled exhaust gas (4) are communicated with described EGR valve (2), described air inlet tube (5) respectively by expansion joint (41).
7. gas recirculation system according to claim 6, is characterized in that, also comprises intake-air throttle valve (6), and the air intlet (51) of described air inlet tube (5) is communicated with atmosphere by described intake-air throttle valve (6).
8. a motor, comprises cylinder body and gas recirculation system, and the gas exhaust manifold of described gas recirculation system (1) is connected with the exhaust valve of described cylinder body; It is characterized in that, described gas recirculation system adopts the structure as described in claim 2-7 any one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320828252.4U CN203717168U (en) | 2013-12-13 | 2013-12-13 | Engine, as well as exhaust gas recirculation system and exhaust manifold thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320828252.4U CN203717168U (en) | 2013-12-13 | 2013-12-13 | Engine, as well as exhaust gas recirculation system and exhaust manifold thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203717168U true CN203717168U (en) | 2014-07-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320828252.4U Expired - Lifetime CN203717168U (en) | 2013-12-13 | 2013-12-13 | Engine, as well as exhaust gas recirculation system and exhaust manifold thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203717168U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742297A (en) * | 2013-12-13 | 2014-04-23 | 潍柴动力股份有限公司 | Engine, EGR system of engine and exhaust manifold of EGR system |
| CN109826700A (en) * | 2019-04-01 | 2019-05-31 | 安徽华菱汽车有限公司 | A kind of exhaust manifold, air inlet system and exhaust system and automobile |
| CN112610368A (en) * | 2020-12-10 | 2021-04-06 | 一汽解放汽车有限公司 | Exhaust assembly and vehicle |
-
2013
- 2013-12-13 CN CN201320828252.4U patent/CN203717168U/en not_active Expired - Lifetime
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103742297A (en) * | 2013-12-13 | 2014-04-23 | 潍柴动力股份有限公司 | Engine, EGR system of engine and exhaust manifold of EGR system |
| CN109826700A (en) * | 2019-04-01 | 2019-05-31 | 安徽华菱汽车有限公司 | A kind of exhaust manifold, air inlet system and exhaust system and automobile |
| CN109826700B (en) * | 2019-04-01 | 2024-01-30 | 安徽华菱汽车有限公司 | Exhaust manifold, air inlet and exhaust system and automobile |
| CN112610368A (en) * | 2020-12-10 | 2021-04-06 | 一汽解放汽车有限公司 | Exhaust assembly and vehicle |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140716 |