CN203499859U - Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus - Google Patents
Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus Download PDFInfo
- Publication number
- CN203499859U CN203499859U CN201320586444.9U CN201320586444U CN203499859U CN 203499859 U CN203499859 U CN 203499859U CN 201320586444 U CN201320586444 U CN 201320586444U CN 203499859 U CN203499859 U CN 203499859U
- Authority
- CN
- China
- Prior art keywords
- venturi tube
- exhaust gas
- inlet end
- cooler
- intercooler
- 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.)
- Expired - Fee Related
Links
Images
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
Abstract
The utility model relates to a supercharged diesel engine Venturi tube exhaust gas recirculation apparatus. The apparatus comprises an engine, a cooler, a compressor, and an intercooler and is characterized in that an exhaust manifold of the engine is connected with the air inlet end of a turbine and the air inlet end of the cooler; the air outlet end of the cooler is connected with the exhaust gas inlet end of a Venturi tube; an exhaust gas recirculation valve is arranged between the air outlet end of the cooler and the exhaust gas inlet end of the Venturi tube; the air inlet end of the compressor is connected with fresh air; the air outlet end of the compressor is connected with the air inlet end of the intercooler; the air outlet end of the intercooler is connected with the fresh air inlet end of the Venturi tube; the air exhaust port of the Venturi tube is connected with an inlet manifold; and the inlet manifold is connected with a cylinder of the engine. According to the utility model, the problem of exhaust gas backflow caused due to the fact that recirculation exhaust gas of an original high-pressure EGR system under certain work conditions cannot enter an air inlet pipe is solved and a relatively good EGR rate is realized under all work conditions.
Description
Technical field
The utility model relates to a kind of supercharged diesel engine Venturi tube Exhaust gas recirculation device, especially a kind of Exhaust gas recirculation device that is applicable to the serial supercharged diesel engines such as four cylinders 480,488,490,4100.
Background technique
Increasingly strict along with diesel emission rules, discharge becomes the leading factor that leads diesel technology progress.The main method that reduces at present diesel emission has two kinds, and the first is to reduce PM in the in-cylinder combustion stage, in post-processing stages, reduces NO
x; The second is to reduce NO in the in-cylinder combustion stage
x, in post-processing stages, reduce PM.Be subject to the restriction of China's state-of-the art, present stage extensively adopts second method.EGR (EGR) technology is controlled NO as meeting state three, state four and stricter emission standard simultaneously
xone of key technology of discharge, reaches its maturity technically.
EGR technology can reduce diesel engine NO effectively
xdischarge, in certain condition range, the increase that EGR leads and NO
xminimizing almost linear.Therefore EGR Technology becomes China and reduces NO
xthe prefered method of discharge.Realize EGR and have various ways, low pressure EGR system is from booster turbine, to get waste gas, before gas compressor, mix with fresh air, overcome the problem that high pressure egr system brings because of pressure differential limits, can in larger condition range, realize EGR, but EGR gas can pollute gas compressor, significantly reduced in the gas compressor life-span.High pressure egr system is current most popular a kind of, the advantage of this system is that waste gas is not by gas compressor and intercooler, avoid EGR with working conditions change response lag simultaneously, but its shortcoming is the exhaust gas pressure for recirculation must be greater than the suction pressure after supercharging, otherwise EGR gas can not enter suction tude, this pressure differential limits (particularly under high load operating mode) under many operating modes is implacable.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of supercharged diesel engine Venturi tube Exhaust gas recirculation device is provided, solve 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, the good EGR that can realize under full condition range leads; And solved low pressure EGR system exhaust emission pollution gas compressor, reduced the problem in gas compressor life-span.
The technological scheme providing according to the utility model, a kind of supercharged diesel engine Venturi tube Exhaust gas recirculation device, comprise motor, cooler, gas compressor and intercooler, feature is: the gas exhaust manifold of described motor is connected with the inlet end of turbine, cooler respectively, the outlet side of cooler is connected with the exhaust gas inlet end of Venturi tube, between the outlet side of cooler and the exhaust gas inlet end of Venturi tube, exhaust gas recirculation valve is set; The inlet end of described gas compressor is connected with new charge, and the outlet side of gas compressor is connected with the inlet end of intercooler, and the outlet side of intercooler is connected with the new charge entrance point of Venturi tube; The relief opening of described Venturi tube is connected with intake manifold, and intake manifold is connected with cylinder.
Described Venturi tube comprises body, on the sidewall of body, exhaust inlet pipe is set; Described body comprises convergent nozzle section, mixing section and diffuser, and convergent nozzle section is connected with the outlet side of intercooler, and diffuser is connected with intake manifold.
The diameter of described convergent nozzle section entrance point is greater than the diameter of convergent nozzle section and mixing section connecting end, the diameter of diffuser outlet end is greater than the diameter of diffuser and mixing section connecting end, the diameter of diffuser outlet end is greater than the diameter that shrinks spray section entrance point, and the internal surface curved surface of convergent nozzle section, mixing section and diffuser seamlessly transits.
Compared with prior art, advantage is the utility model:
(1) the utility model has expanded the operating range of high pressure egr system, due to the problem that exists waste gas to flow backwards, originally high pressure egr system is at Part load particularly under high load working condition, EGR gas can not flow to suction tude, and the utility model has solved this problem preferably, adopt Venturi tube to reduce outlet section pressure, make still can have in high loading zone good EGR to lead, thereby effectively reduce NO
xdischarge;
(2) the utility model is due to the throttling action of Venturi tube, and inlet stream flow velocity when Venturi tube is accelerated, and EGR gas is introduced at Venturi tube mixing section, so air inlet mixes more even with waste gas;
(3) the utility model structural configuration is convenient, only need install a set of venturi arrangement additional at former engine exhaust and air inlet mixing section, is particularly useful for the serial supercharged engine such as four cylinders 480,488,490,4100.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structural representation of Venturi tube described in the utility model.
Embodiment
Below in conjunction with concrete accompanying drawing, the utility model is described in further detail.
As shown in Fig. 1～Fig. 2: as described in supercharged diesel engine Venturi tube Exhaust gas recirculation device comprise motor 1, Venturi tube 2, body 2-1, gas inlet pipeline 2-2, intake manifold 3, exhaust gas recirculation valve 4, cooler 5, gas exhaust manifold 6, turbine 7, gas compressor 8, intercooler 9, convergent nozzle section L1, mixing section L2, diffuser L3 etc.
As shown in Figure 1, the utility model comprises motor 1, cooler 5, gas compressor 8, intercooler 9 and Venturi tube 2, the gas exhaust manifold 6 of motor 1 is connected with the inlet end of turbine 7, cooler 5 respectively, the outlet side of cooler 5 is connected with the exhaust gas inlet end of Venturi tube 2, between the outlet side of cooler 5 and the exhaust gas inlet end of Venturi tube 2, exhaust gas recirculation valve 4 is set; The inlet end of described gas compressor 8 is connected with new charge, and the outlet side of gas compressor 8 is connected with the inlet end of intercooler 9, and the outlet side of intercooler 9 is connected with the new charge entrance point of Venturi tube 2; Described Venturi tube 2 is for generation of air inlet restriction, and mineralization pressure is poor; The relief opening of described Venturi tube 2 is connected with intake manifold 3, and intake manifold 3 is connected with motor 1 cylinder;
As shown in Figure 2, described Venturi tube 2 comprises body 2-1, and exhaust inlet pipe 2-2 is set on the sidewall of body 2-1; Described body 2-1 comprises convergent nozzle section L1, mixing section L2 and diffuser L3, and convergent nozzle section L1 is connected with the outlet side of intercooler 9, and diffuser L3 is connected with intake manifold 3; The diameter of described convergent nozzle section L1 entrance point is greater than the diameter of convergent nozzle section L1 and mixing section L2 connecting end, the diameter of diffuser L3 outlet end is greater than the diameter of diffuser L3 and mixing section L2 connecting end, the diameter of diffuser L3 outlet end is greater than the diameter that shrinks spray section L1 entrance point, and the internal surface curved surface of convergent nozzle section L1, mixing section L2 and diffuser L3 seamlessly transits, there is no hard corner angle, gas flow resistance is little.
The utility model in use, utilizes Venturi tube to produce suitable air inlet restriction, and mineralization pressure is poor; The low pressure that the throttle effect of Venturi tube produces sucks exhaust inlet pipe by waste gas; The relief opening of described Venturi tube connects intake manifold, through the even mixed EGR gas of Venturi tube, air inlet mixed gas, by each intake manifold, flows to each cylinder.
Waste gas after Venturi tube is evenly mixed, enters each intake manifold through diffuser L3 with new charge, and the effect of diffuser is that the kinetic energy of air-flow is changed into pressure energy, to reduce the energy loss of wind-tunnel.
The utility model is compared with conventional high-tension egr system, be not directly from gas exhaust manifold, to be connected to intake manifold, but in high pressure gas side and high pressure admission side, install the throttling arrangement of a set of venturi-type, it can be realized in whole power ranges, all in condition range, gas there will not be refluence phenomenon, good ER EGR Rate can be realized, NO can be effectively reduced
xdischarge.
Claims (3)
1. a supercharged diesel engine Venturi tube Exhaust gas recirculation device, comprise motor (1), cooler (5), gas compressor (8) and intercooler (9), it is characterized in that: the gas exhaust manifold (6) of described motor (1) is connected with the inlet end of turbine (7), cooler (5) respectively, the outlet side of cooler (5) is connected with the exhaust gas inlet end of Venturi tube (2), between the outlet side of cooler (5) and the exhaust gas inlet end of Venturi tube (2), exhaust gas recirculation valve (4) is set; The inlet end of described gas compressor (8) is connected with new charge, and the outlet side of gas compressor (8) is connected with the inlet end of intercooler (9), and the outlet side of intercooler (9) is connected with the new charge entrance point of Venturi tube (2); The relief opening of described Venturi tube (2) is connected with intake manifold (3), and intake manifold (3) is connected with motor (1) cylinder.
2. supercharged diesel engine Venturi tube Exhaust gas recirculation device as claimed in claim 1, is characterized in that: described Venturi tube (2) comprises body (2-1), and exhaust inlet pipe (2-2) is set on the sidewall of body (2-1); Described body (2-1) comprises convergent nozzle section (L1), mixing section (L2) and diffuser (L3), and convergent nozzle section (L1) is connected with the outlet side of intercooler (9), and diffuser (L3) is connected with intake manifold (3).
3. supercharged diesel engine Venturi tube Exhaust gas recirculation device as claimed in claim 2, it is characterized in that: the diameter of described convergent nozzle section (L1) entrance point is greater than the diameter of convergent nozzle section (L1) and mixing section (L2) connecting end, the diameter of diffuser (L3) outlet end is greater than the diameter of diffuser (L3) and mixing section (L2) connecting end, the diameter of diffuser (L3) outlet end is greater than the diameter that shrinks spray section (L1) entrance point, and the internal surface curved surface of convergent nozzle section (L1), mixing section (L2) and diffuser (L3) seamlessly transits.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586444.9U CN203499859U (en) | 2013-09-22 | 2013-09-22 | Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320586444.9U CN203499859U (en) | 2013-09-22 | 2013-09-22 | Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203499859U true CN203499859U (en) | 2014-03-26 |
Family
ID=50330846
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320586444.9U Expired - Fee Related CN203499859U (en) | 2013-09-22 | 2013-09-22 | Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203499859U (en) |
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822463A (en) * | 2016-05-06 | 2016-08-03 | 哈尔滨工程大学 | Venturi pipe waste gas recirculating device of improved ship low-speed diesel engine |
| CN108757195A (en) * | 2018-07-28 | 2018-11-06 | 福州大学 | The EGR rate control device and its control method that can be changed Venturi tube are driven based on worm and gear |
| US10316803B2 (en) | 2017-09-25 | 2019-06-11 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
| CN110566354A (en) * | 2019-09-18 | 2019-12-13 | 广西玉柴机器股份有限公司 | Exhaust gas recirculation system and method for measuring EGR rate |
| CN112211757A (en) * | 2020-10-14 | 2021-01-12 | 哈尔滨工程大学 | Supercharged diesel engine EGR rate flexible adjustable system and adjusting method |
| US10995705B2 (en) | 2019-02-07 | 2021-05-04 | Woodward, Inc. | Modular exhaust gas recirculation system |
| US11174809B1 (en) | 2020-12-15 | 2021-11-16 | Woodward, Inc. | Controlling an internal combustion engine system |
| US11215132B1 (en) | 2020-12-15 | 2022-01-04 | Woodward, Inc. | Controlling an internal combustion engine system |
| US11293382B2 (en) | 2020-01-08 | 2022-04-05 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
| CN114963002A (en) * | 2022-05-31 | 2022-08-30 | 广东众大智能科技有限公司 | Explosion-proof treatment device for combustible tail gas |
-
2013
- 2013-09-22 CN CN201320586444.9U patent/CN203499859U/en not_active Expired - Fee Related
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105822463A (en) * | 2016-05-06 | 2016-08-03 | 哈尔滨工程大学 | Venturi pipe waste gas recirculating device of improved ship low-speed diesel engine |
| US10316803B2 (en) | 2017-09-25 | 2019-06-11 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
| US10634099B2 (en) | 2017-09-25 | 2020-04-28 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
| CN108757195A (en) * | 2018-07-28 | 2018-11-06 | 福州大学 | The EGR rate control device and its control method that can be changed Venturi tube are driven based on worm and gear |
| CN108757195B (en) * | 2018-07-28 | 2024-04-23 | 福州大学 | EGR rate control device based on worm and gear driving variable venturi tube and control method thereof |
| US10995705B2 (en) | 2019-02-07 | 2021-05-04 | Woodward, Inc. | Modular exhaust gas recirculation system |
| CN110566354A (en) * | 2019-09-18 | 2019-12-13 | 广西玉柴机器股份有限公司 | Exhaust gas recirculation system and method for measuring EGR rate |
| US11293382B2 (en) | 2020-01-08 | 2022-04-05 | Woodward, Inc. | Passive pumping for recirculating exhaust gas |
| CN112211757A (en) * | 2020-10-14 | 2021-01-12 | 哈尔滨工程大学 | Supercharged diesel engine EGR rate flexible adjustable system and adjusting method |
| US11174809B1 (en) | 2020-12-15 | 2021-11-16 | Woodward, Inc. | Controlling an internal combustion engine system |
| US11215132B1 (en) | 2020-12-15 | 2022-01-04 | Woodward, Inc. | Controlling an internal combustion engine system |
| CN114963002A (en) * | 2022-05-31 | 2022-08-30 | 广东众大智能科技有限公司 | Explosion-proof treatment device for combustible tail gas |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN203499859U (en) | Supercharged diesel engine Venturi tube exhaust gas recirculation apparatus | |
| CN204386776U (en) | Two-stage supercharging diesel engine realizes the adjustable venturi pipe device of EGR | |
| US20150267650A1 (en) | Venturi egr pump | |
| WO2019119783A1 (en) | Exhaust gas recirculation system for petrol engine, and control method thereof | |
| CN201747481U (en) | EGR system control device | |
| CN105840355B (en) | The adjustable Two Stage Turbocharging System of internal combustion engine full working scope EGR rate and its control method | |
| CN103470408A (en) | EGR (Exhaust Gas Recirculation) system used for marine medium-speed diesel engine | |
| CN105464848A (en) | Single cylinder diesel EGR device based on high-pressure air two-stage supercharging and control method | |
| CN204493018U (en) | A kind of gas recirculation system and automobile | |
| CN105822463A (en) | Venturi pipe waste gas recirculating device of improved ship low-speed diesel engine | |
| CN104791147A (en) | Particulate matter removing device of marine heavy-duty diesel engine EGR system | |
| CN202065090U (en) | Low-pressure exhaust gas recirculation system of diesel engine | |
| CN202645779U (en) | Diesel engine exhaust gas recirculation mixer | |
| KR101683495B1 (en) | Engine system having turbo charger | |
| CN106837615B (en) | A kind of multistage EGR turbo charge system | |
| CN210343538U (en) | Medium-pressure exhaust gas recirculation system based on two-stage turbocharger | |
| CN101956633A (en) | Exhaust gas recirculation system for internal combustion engine | |
| CN112211757A (en) | Supercharged diesel engine EGR rate flexible adjustable system and adjusting method | |
| CN205532931U (en) | EGR system suitable for dual -fuel engine | |
| CN203655418U (en) | EGR (exhaust gas recirculation) system for marine medium-speed diesel engine | |
| CN201794690U (en) | Gas inlet pipe of diesel engine | |
| Hariganesh et al. | Computational analysis of EGR mixing inside the intake system & experimental investigation on diesel engine for LCV | |
| CN205779317U (en) | A kind of marine low speed diesel engine Venturi tube ERG of improvement | |
| CN103541835A (en) | Turbocharged engine with cooling exhaust recirculation technology | |
| CN210343536U (en) | Medium-pressure exhaust gas low-pressure side introducing system based on two-stage turbocharger |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140326 Termination date: 20200922 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |