CN203009100U - Exhaust gas recirculation device for supercharged diesel engine - Google Patents
Exhaust gas recirculation device for supercharged diesel engine Download PDFInfo
- Publication number
- CN203009100U CN203009100U CN2012206688223U CN201220668822U CN203009100U CN 203009100 U CN203009100 U CN 203009100U CN 2012206688223 U CN2012206688223 U CN 2012206688223U CN 201220668822 U CN201220668822 U CN 201220668822U CN 203009100 U CN203009100 U CN 203009100U
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- China
- Prior art keywords
- exhaust gas
- filter cleaner
- recirculation device
- filter
- diesel engine
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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.)
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- 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
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- Exhaust-Gas Circulating Devices (AREA)
Abstract
The utility model relates to an exhaust gas recirculation device for a supercharged diesel engine. The exhaust gas recirculation device is characterized by comprising a filter, an EGR cooler and an EGR valve, an inlet of the filter is connected with the rear portion of an exhaust manifold of an engine, the filter is used for filtering large particles in filtered gas; and an outlet of the filter is sequentially connected with the EGR cooler and the EGR valve, an outlet of the EGR valve is connected with a gas inlet end of a gas compressor of a supercharger, an outlet of the gas compressor is connected with an intake manifold of the engine. The exhaust gas recirculation device for the supercharged diesel engine solves the problem of exhaust gas backflow caused by the fact that recycled exhaust gas cannot enter the air inlet pipe under parts of the working conditions of a high pressure EGR system, can achieve a good EGR rate in an all-condition range, and solves the problem that service life of the air compressor is shortened caused by the fact that the exhaust gas of a low pressure EGR system pollutes the air compressor. A structure of the exhaust gas recirculation device is convenient to arrange and can be freely arranged according to a structure of the engine.
Description
Technical field
The utility model relates to EGR (EGR) device of supercharged diesel engine, especially a kind of EGR device that is applicable to four cylinders 480, the serial supercharged diesel engines such as 488,490,4100.
Background technique
Increasingly strict along with the diesel emission rules, Abgasgesetz becomes the leading factor that leads the diesel technology progress.EGR (EGR) technology is to satisfy state three, state four and stricter emission standard is controlled one of key technology of NOx discharging, technically reaches its maturity.
The EGR technology can reduce the discharging of Diesel NOx effectively, and in certain condition range, the increase that EGR leads and the minimizing of NOx are almost linear.Therefore EGR Technology becomes the prefered method that reduces the NOx discharging.Realize that EGR has various ways, the high pressure egr system is current most popular a kind of, this advantage of system is that waste gas is not by gas compressor and intercooler, avoid simultaneously EGR with the working conditions change response lag, but its shortcoming is must be greater than the suction pressure after supercharging for the exhaust gas pressure of recirculation, otherwise EGR gas can not enter suction tude, and this pressure differential limits is implacable in (particularly under the high load operating mode) under many operating modes.Low pressure EGR system is to get waste gas after booster turbine, mix with fresh air before gas compressor, overcome the problem that the high pressure egr system brings because of pressure differential limits, can realize EGR in larger condition range, but EGR gas can pollute gas compressor, and the gas compressor life-span is significantly reduced.
Summary of the invention
The purpose of this utility model is for the above-mentioned problems in the prior art, a kind of Exhaust gas recirculation device of novel supercharged diesel engine is provided, it has overcome original high pressure egr system EGR gas under Part load can not enter suction tude, the problem that exists waste gas to flow backwards can realize that the EGR preferably under full condition range leads; Overcome low pressure EGR system exhaust emission pollution gas compressor, reduced the problem in gas compressor life-span; And this Exhaust gas recirculation device structural configuration is convenient, can arrange arbitrarily with engine structure, is particularly useful for four cylinders 480, the serial supercharged engine such as 488,490,4100.
The technological scheme that provides according to the utility model: the Exhaust gas recirculation device of supercharged diesel engine, it is characterized in that: comprise filter cleaner, cooler for recycled exhaust gas and EGR valve, after the import of described filter cleaner was connected to the gas exhaust manifold of motor, filter cleaner was used for the larger particulate matter of filtering exhaust; The outlet of described filter cleaner connects cooler for recycled exhaust gas and EGR valve in turn, and the outlet of EGR valve is connected to the inlet end of the gas compressor of pressurized machine, and the outlet of gas compressor is connected to the intake manifold of motor.
As further improvement of the utility model, described filter cleaner adopts rotary filter cleaner.
as further improvement of the utility model, described rotary filter cleaner comprises suction tude, filter housing, at the bottom of filter cleaner and steam outlet pipe, the inlet end of described suction tude connects the relief opening of gas exhaust manifold by conduit, the outlet side of suction tude is connected to the position on close top on the filter housing sidewall in the mode of spiral incision, described filter housing is cylindrical body, cover plate for sealing is passed through in the filter housing upper end, the filter housing lower end is by sealing at the bottom of dismountable filter cleaner, described steam outlet pipe one end inserts in filter housing near the position at the bottom of filter cleaner from the top of filter housing, the steam outlet pipe the other end is connected to cooler for recycled exhaust gas by conduit.
As further improvement of the utility model, at the bottom of described filter cleaner, the center is to lower recess.
As further improvement of the utility model, at the bottom of described filter cleaner, the depression at center is arc-shaped recess.
As further improvement of the utility model, be connected with intercooler between the outlet of described gas compressor and the intake manifold of motor.
The utility model compared with prior art, advantage is:
1, the utility model is compared with original high pressure egr system, overcome original high pressure egr system EGR gas under Part load and can not enter suction tude, the problem that exists waste gas to flow backwards, can realize in the full power scope, under full condition range, gas the phenomenon that flows backwards can not occur, can realize that EGR leads preferably, can effectively reduce the discharging of NOx;
2, the utility model is compared with original low pressure EGR system, has overcome low pressure EGR system exhaust emission pollution gas compressor, reduces the problem in gas compressor life-span;
3, the utility model adopts the effectively particulate matter in filtering exhaust of rotary filter cleaner, reduces the damage to pressurized machine, and the while has also reduced the regeneration of particulate matter;
4, the utility model structural configuration is convenient, can arrange arbitrarily with the layout of engine structure, is particularly useful for four cylinders 480, the serial supercharged engine such as 488,490,4100.
Description of drawings
Fig. 1 is that exhaust stream of the present utility model is to schematic diagram.
Fig. 2 is the outline drawing of filter cleaner in Fig. 1.
Fig. 3 is the partial sectional view of Fig. 2.
Fig. 4 is the plan view of Fig. 2.
Description of reference numerals: at the bottom of 1-motor, 2-intake manifold, 3-EGR valve, 4-cooler, 5-gas exhaust manifold, 6-filter cleaner, 6a-suction tude, 6b-filter housing, 6c-filter cleaner, 6d-steam outlet pipe, 7-turbine, 8-gas compressor, 9-intercooler.
Embodiment
The utility model is described in further detail below in conjunction with concrete drawings and Examples.
As shown in the figure: the Exhaust gas recirculation device of the supercharged diesel engine in embodiment mainly is comprised of filter cleaner 6, cooler for recycled exhaust gas 4 and EGR valve 3, after the import of described filter cleaner 6 was connected to the gas exhaust manifold 5 of motor 1, filter cleaner 6 was used for the larger particulate matter of filtering exhaust; The outlet of described filter cleaner 6 connects cooler for recycled exhaust gas 4 and EGR valve 3 in turn, and the outlet of EGR valve 3 is connected to the inlet end of the gas compressor 8 of pressurized machine, and the outlet of gas compressor 8 is connected to the intake manifold 2 of motor 1.Preferably, be connected with intercooler 9 between the intake manifold 2 of the outlet of described gas compressor 8 and motor 1.
In the utility model, the described filter cleaner 6 rotary filter cleaners 6 of preferred employing.the structure of described rotary filter cleaner 6 such as Fig. 2 ~ shown in Figure 4, it is mainly by suction tude 6a, filter housing 6b, at the bottom of filter cleaner, 6c and steam outlet pipe 6d form, the inlet end of described suction tude 6a connects the relief opening of gas exhaust manifold 5 by conduit, the outlet side of suction tude 6a is connected to the position on close top on filter housing 6b sidewall in the mode of spiral incision, described filter housing 6b is cylindrical body, filter housing 6b passes through cover plate for sealing in the upper end, filter housing 6b lower end is by 6c sealing at the bottom of dismountable filter cleaner, described steam outlet pipe 6d one end inserts in filter housing 6b the position near 6c at the bottom of filter cleaner from the top of filter housing 6b, the steam outlet pipe 6d the other end is connected to cooler for recycled exhaust gas 4 by conduit.
As shown in Figure 3, in the utility model, at the bottom of described filter cleaner, the 6c center is to lower recess, to hold the particulate matter that filters down.Preferably, at the bottom of described filter cleaner, the depression at 6c center is arc-shaped recess.
During concrete the application, waste gas from gas exhaust manifold 5 out after, part exhaust enters rotary filter cleaner 6, waste gas enters from the inlet end of rotary filter cleaner 6 suction tude 6a, the mode of cutting with spiral from the outlet side of suction tude 6a enters in filter housing 6b, large particle thing in exhaust is being thrown under the effect of centrifugal force on the internal face of filter housing 6b, then drops in the depression at 6c center at the bottom of filter cleaner.Under the filtration of rotary filter cleaner 6, the large particle things such as the unburned HC in exhaust are filtered to 6c at the bottom of filter cleaner, can reduce like this exhaust to the damage of pressurized machine, reduce the regeneration of particulate matter.
Gas after filtration flows out to cooler for recycled exhaust gas 4 from steam outlet pipe 6d, through after the cooling action of cooler for recycled exhaust gas 4, temperature reduces, then pass through EGR valve 3, inlet end from the gas compressor 8 of pressurized machine enters pressurized machine at last, under the effect of booster turbine 7, gas compressor 8, the compressed intake manifold 2 that then enters motor 1 of exhaust.
Exhaust gas recirculation device of the present utility model is compared with the conventional high-tension egr system, be not directly to be connected to intake manifold 2 from gas exhaust manifold 5, not namely from being directly connected to the high pressure admission side from the high pressure gas side, but be connected to the low-pressure admission side from the high pressure gas side.It can realize in the full power scope, and in full condition range, gas the phenomenon that flows backwards can not occur, and can realize ER EGR Rate preferably, can effectively reduce the discharging of NOx.
Exhaust gas recirculation device of the present utility model is compared with the conventional low egr system, be not to get waste gas after booster turbine 7, undressed waste gas directly neither be mixed with fresh air before gas compressor 8, but the larger particulate matter in the first filtering exhaust of employing filter cleaner 6, make EGR gas can not pollute gas compressor 8, can not affect 8 working lifes of gas compressor, suppress the regeneration of particulate matter simultaneously yet.
When the utility model specifically was installed on motor 1, owing to connecting by conduit between each parts, adjustability was better, and it can be arranged arbitrarily with the structure of motor 1.
Claims (6)
1. the Exhaust gas recirculation device of supercharged diesel engine, it is characterized in that: comprise filter cleaner (6), cooler for recycled exhaust gas (4) and EGR valve (3), the gas exhaust manifold (5) that the import of described filter cleaner (6) is connected to motor (1) afterwards, filter cleaner (6) is used for the larger particulate matter of filtering exhaust; The outlet of described filter cleaner (6) connects cooler for recycled exhaust gas (4) and EGR valve (3) in turn, and the outlet of EGR valve (3) is connected to the inlet end of the gas compressor (8) of pressurized machine, and the outlet of gas compressor (8) is connected to the intake manifold (2) of motor (1).
2. the Exhaust gas recirculation device of supercharged diesel engine as claimed in claim 1, it is characterized in that: described filter cleaner (6) adopts rotary filter cleaner (6).
3. the Exhaust gas recirculation device of supercharged diesel engine as claimed in claim 2, it is characterized in that: described rotary filter cleaner (6) comprises suction tude (6a), filter housing (6b), (6c) and steam outlet pipe (6d) at the bottom of filter cleaner, the inlet end of described suction tude (6a) connects the relief opening of gas exhaust manifold (5) by conduit, the outlet side of suction tude (6a) is connected to the position on close top on filter housing (6b) sidewall in the mode of spiral incision, described filter housing (6b) is cylindrical body, cover plate for sealing is passed through in filter housing (6b) upper end, filter housing (6b) lower end is by (6c) sealing at the bottom of dismountable filter cleaner, described steam outlet pipe (6d) end is from the interior position near (6c) at the bottom of filter cleaner of the top insertion filter housing (6b) of filter housing (6b), steam outlet pipe (6d) the other end is connected to cooler for recycled exhaust gas (4) by conduit.
4. the Exhaust gas recirculation device of supercharged diesel engine as claimed in claim 3, it is characterized in that: at the bottom of described filter cleaner, (6c) center is to lower recess.
5. the Exhaust gas recirculation device of supercharged diesel engine as claimed in claim 4, it is characterized in that: at the bottom of described filter cleaner, the depression at (6c) center is arc-shaped recess.
6. the Exhaust gas recirculation device of supercharged diesel engine as claimed in claim 1, is characterized in that: be connected with intercooler (9) between the intake manifold (2) of the outlet of described gas compressor (8) and motor (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206688223U CN203009100U (en) | 2012-12-07 | 2012-12-07 | Exhaust gas recirculation device for supercharged diesel engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012206688223U CN203009100U (en) | 2012-12-07 | 2012-12-07 | Exhaust gas recirculation device for supercharged diesel engine |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203009100U true CN203009100U (en) | 2013-06-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012206688223U Expired - Lifetime CN203009100U (en) | 2012-12-07 | 2012-12-07 | Exhaust gas recirculation device for supercharged diesel engine |
Country Status (1)
| Country | Link |
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| CN (1) | CN203009100U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996290A (en) * | 2012-12-07 | 2013-03-27 | 江苏四达动力机械集团有限公司 | Exhaust gas recirculation equipment of supercharged diesel engine |
| CN104074636A (en) * | 2013-12-23 | 2014-10-01 | 哈尔滨工程大学 | Diesel engine EGR (Exhaust Gas Recirculation) system having humidification effect |
| CN105781721A (en) * | 2016-03-02 | 2016-07-20 | 浙江大学 | Indirect energy-efficient emission reduction control method of variable area turbocharged diesel engine |
| CN107339173A (en) * | 2016-04-29 | 2017-11-10 | 现代自动车株式会社 | Reclaim the device of the exhaust heat of engine and the control method using its engine |
-
2012
- 2012-12-07 CN CN2012206688223U patent/CN203009100U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102996290A (en) * | 2012-12-07 | 2013-03-27 | 江苏四达动力机械集团有限公司 | Exhaust gas recirculation equipment of supercharged diesel engine |
| CN104074636A (en) * | 2013-12-23 | 2014-10-01 | 哈尔滨工程大学 | Diesel engine EGR (Exhaust Gas Recirculation) system having humidification effect |
| CN105781721A (en) * | 2016-03-02 | 2016-07-20 | 浙江大学 | Indirect energy-efficient emission reduction control method of variable area turbocharged diesel engine |
| CN105781721B (en) * | 2016-03-02 | 2018-02-23 | 浙江大学 | A kind of variable cross section turbo-charging diesel motor indirect energy saving emission reduction control method |
| CN107339173A (en) * | 2016-04-29 | 2017-11-10 | 现代自动车株式会社 | Reclaim the device of the exhaust heat of engine and the control method using its engine |
| CN107339173B (en) * | 2016-04-29 | 2020-06-30 | 现代自动车株式会社 | Device for recovering exhaust heat of engine and method for controlling engine using same |
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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: 20130619 |