CN104791147A - Particulate matter removing device of marine heavy-duty diesel engine EGR system - Google Patents
Particulate matter removing device of marine heavy-duty diesel engine EGR system Download PDFInfo
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- CN104791147A CN104791147A CN201510119470.4A CN201510119470A CN104791147A CN 104791147 A CN104791147 A CN 104791147A CN 201510119470 A CN201510119470 A CN 201510119470A CN 104791147 A CN104791147 A CN 104791147A
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- egr
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- outlet pipe
- diesel engine
- particulate matter
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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
Abstract
The invention provides a particulate matter removing device of a marine heavy-duty diesel engine EGR system and relates to the technical field of internal combustion engines. The particulate matter removing device comprises a conical turbine air outlet pipe, a shuttle containing cavity, screw blades, an EGR pipeline and an EGR valve. The conical turbine air outlet pipe, the shuttle containing cavity and a rear exhaust pipe are sequentially connected. The screw blades are arranged in the conical turbine air outlet pipe to form a helical duct through a screw blade fixing support. An air inlet of the EGR pipeline is formed in the shuttle containing cavity, an air outlet of the EGR pipeline is formed in a front air inlet pipe. Clean tail gas can be used as an air source of the EGR system, and pollution of particulate matter to a gas compressor and an engine air inlet system is reduced. The particulate matter removing device is reasonable in design, simple in structure, and suitable for EGR low pressure loop connection methods.
Description
Technical field
What the present invention relates to is a kind of egr system particulate matter removal device of large diesel engine peculiar to vessel, is a kind ofly especially applicable to containing large diesel engine egr system particulate matter removal device cold in air inlet turbine supercharging and air inlet.
Background technique
EGR (EGR) technology is considered to a kind of effective measures reducing NOx emission for a long time always.But when EGR technology is applied to diesel engine, can the problem of serving be with.Diesel engine is owing to adopting the mode of in-cylinder direct injection compression ignition, and mixture combustion exists diffusive combustion district, and this can cause the generation of particulate matter, and especially on the marine diesel engine taking reduced fuel oil as main fuel, problem is more outstanding.Higher granular material dischargedly not only to pollute air, and egr system can be caused to block and intake valve, air valve seat ring wearing and tearing, serious meeting causes the problems such as valve sealing is not tight.
Turbocharged and intercooled diesel engine is according to the difference of EGR circuit, and egr system can be divided into low tension loop connection method and high tension loop connection method.In low tension loop connection method, with outer tube, the turbine outlet of exhaust-gas turbocharger and compressor inlet are coupled together, and on loop, install EGR valve additional to the flow of control EGR.This method is easy to the suitable pressure difference of acquisition one, all easily realizes in the speed range that diesel engine is larger.But because waste gas streams is through the gas compressor of pressurized machine and Intercooler, the particulate matter composition in waste gas easily causes the corrosion of pressurized machine and the stained of intercooler, makes reliability and the service life reduction of diesel engine.In high tension loop connection method, the entrance of turbine and the outlet of gas compressor are coupled together.Because the waste gas of discharging is without gas compressor and intercooler, therefore avoid the infringement to gas compressor and intercooler, but inevitably cause the wearing and tearing of intake valve and air valve seat ring.
The method of current reduction particulate matter mainly improves the power that directly sprays, adopts the new combustion patterns such as homogeneous compression-ignition, adopts DPF etc.Improve jet pressure can improve air-fuel mixture to a certain extent, reduce granular material discharged, but improvement result is limited when large load; Homogeneous compression-ignition technology is difficult to the self-defects such as effective control, cyclical variations are large owing to there is ignition timing, and its experiment certification also needs certain hour; DPF technology is comparatively ripe particulate matter removal technology, but on heavy duty marine diesel engine, existing DPF can block rapidly, and cause exhaust back pressure to increase, DPF needs frequent regeneration, and practicability is not strong.
Summary of the invention
The present invention is in order to overcome the deficiency of above-mentioned technology, and the egr system for low tension loop connection method provides a kind of simple and easy method that effectively can reduce EGR circuit particle content.Basic principle is, utilizes the nonuniformity of exhaust components quality, at waste gas streams after exhaust driven gas turbine, in outlet pipe, arranges helical intake.Air-flow is by making it high-speed rotary afterwards then making particulate matter produce centrifugal action, and egr system pipeline only reclaims the less portion discharge of intermediate particle thing content.
The present invention is achieved through the following technical solutions, intercooler of the present invention, diesel engine, gas compressor, turbine, conical turbine steam outlet pipe, fusiformis cavity volume, rear end outlet pipe, helical blade, EGR pipe road, EGR valve, front end airflow pipe, helical blade fixed support, diesel engine is by intake and exhaust pipeline and gas compressor, turbine is connected, and intercooler is arranged in diesel engine, on air inlet pipeline between gas compressor, the air outlet of front end airflow pipe is connected with the suction port of gas compressor by air inlet pipeline, conical turbine steam outlet pipe, fusiformis cavity volume, rear end outlet pipe is connected in turn, the air outlet of turbine is connected by the suction port of gas exhaust piping with conical turbine steam outlet pipe, helical blade is arranged in conical turbine steam outlet pipe by helical blade fixed support and forms helical intake, the suction port in EGR pipe road is arranged in fusiformis cavity volume, the suction port center line in EGR pipe road with exhaust stream in fusiformis cavity volume to parallel, the air outlet in EGR pipe road is arranged in front end airflow pipe, and EGR valve is arranged on EGR pipe road.
Further, the cross section of conical turbine steam outlet pipe, fusiformis cavity volume, rear end outlet pipe is circle in the present invention, the suction port center line in EGR pipe road and the dead in line of fusiformis cavity volume, and conical turbine steam outlet pipe is convergent jet pipe, and EGR valve is solenoid valve.
Compared with prior art, the present invention has following beneficial effect and is: can obtain the source of the gas of comparatively clean tail gas as egr system, reduces the pollution of particulate matter to gas compressor and engine aspirating system; Reasonable in design, structure is simple, and development cost is low.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Wherein: 1, conical turbine steam outlet pipe, 2, fusiformis cavity volume, 3, rear end outlet pipe, 4, helical blade, 5, EGR pipe road, 6, EGR valve, 7, front end airflow pipe, 8, helical blade fixed support, 9, intercooler, 10, diesel engine, 11, gas compressor, 12, turbine.
Embodiment
Elaborate to embodiments of the invention below in conjunction with accompanying drawing, the present embodiment, premised on technical solution of the present invention, give detailed mode of execution and concrete operating process, but protection scope of the present invention is not limited to following embodiment.
embodiment
As shown in Figure 1, the present invention includes conical turbine steam outlet pipe 1, fusiformis cavity volume 2, rear end outlet pipe 3, helical blade 4, EGR pipe road 5, EGR valve 6, front end airflow pipe 7, helical blade fixed support 8, intercooler 9, diesel engine 10, gas compressor 11, turbine 12, diesel engine 10 is by intake and exhaust pipeline and gas compressor 11, turbine 12 is connected, and intercooler 9 is arranged in diesel engine 10, on air inlet pipeline between gas compressor 11, the air outlet of front end airflow pipe 7 is connected by the suction port of air inlet pipeline with gas compressor 11, conical turbine steam outlet pipe 1, fusiformis cavity volume 2, rear end outlet pipe 3 is connected in turn, the air outlet of turbine 12 is connected by the suction port of gas exhaust piping with conical turbine steam outlet pipe 1, helical blade 4 is arranged in conical turbine steam outlet pipe 1 by helical blade fixed support 8 and forms helical intake, the suction port in EGR pipe road 5 is arranged in fusiformis cavity volume 2, the suction port center line in EGR pipe road 5 with exhaust stream in fusiformis cavity volume 2 to parallel, the air outlet in EGR pipe road 5 is arranged in front end airflow pipe 7, and EGR valve 6 is arranged on EGR pipe road 5, the cross section of conical turbine steam outlet pipe 1, fusiformis cavity volume 2, rear end outlet pipe 3 is circle, the suction port center line in EGR pipe road 5 and the dead in line of fusiformis cavity volume 2, and conical turbine steam outlet pipe 1 is convergent jet pipe, and EGR valve 6 is solenoid valve.
Workflow of the present invention is: after (1) exhaust out flows through turbine 12 from exhaust valve, namely enter in conical turbine steam outlet pipe 1, pipe internal fixtion has helical blade 4, is vented and produces rotation under the guiding of helical blade 4, and continues forward flowing; Piping design is tapered, and be equivalent to a convergent jet pipe, subacoustic exhaust is accelerated.(2) exhaust of High Rotation Speed enters in fusiformis cavity volume 2, and here, soot particulate larger in exhaust will move to the periphery under centrifugal action; When air motion is to cavity volume latter half part time, larger soot particulate is mainly distributed in outer region, and the gas of centre is relative clean, at this moment the clean gas of in good time collection intermediate portion is understood in the horizontal EGR pipe road 5 extend in cavity volume, and remaining exhaust is discharged with exhaust duct.(3) exhaust entering the relative clean in EGR pipe road 5 mixes with fresh air in front end airflow pipe 7 under the control of EGR valve 6, finally by rear inflow cylinder cold in gas compressor 11 supercharging and intercooler 9.
Claims (2)
1. a large diesel engine egr system particulate matter removal device peculiar to vessel, comprise intercooler (9), diesel engine (10), gas compressor (11), turbine (12), diesel engine (10) is by intake and exhaust pipeline and gas compressor (11), turbine (12) is connected, intercooler (9) is arranged in diesel engine (10), on air inlet pipeline between gas compressor (11), characterized by further comprising, conical turbine steam outlet pipe (1), fusiformis cavity volume (2), rear end outlet pipe (3), helical blade (4), EGR pipe road (5), EGR valve (6), front end airflow pipe (7), helical blade fixed support (8), the air outlet of front end airflow pipe (7) is connected by the suction port of air inlet pipeline with gas compressor (11), conical turbine steam outlet pipe (1), fusiformis cavity volume (2), rear end outlet pipe (3) is connected in turn, the air outlet of turbine (12) is connected by the suction port of gas exhaust piping with conical turbine steam outlet pipe (1), helical blade (4) is arranged in conical turbine steam outlet pipe (1) by helical blade fixed support (8) and forms helical intake, the suction port in EGR pipe road (5) is arranged in fusiformis cavity volume (2), the suction port center line in EGR pipe road (5) with fusiformis cavity volume (2) interior exhaust stream to parallel, the air outlet in EGR pipe road (5) is arranged in front end airflow pipe (7), EGR valve (6) is arranged on EGR pipe road (5).
2. large diesel engine egr system particulate matter removal device peculiar to vessel according to claim 1, it is characterized in that the cross section of conical turbine steam outlet pipe (1), fusiformis cavity volume (2), rear end outlet pipe (3) is circle, the suction port center line in EGR pipe road (5) and the dead in line of fusiformis cavity volume (2), conical turbine steam outlet pipe (1) is convergent jet pipe, and EGR valve (6) is solenoid valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119470.4A CN104791147A (en) | 2015-03-18 | 2015-03-18 | Particulate matter removing device of marine heavy-duty diesel engine EGR system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510119470.4A CN104791147A (en) | 2015-03-18 | 2015-03-18 | Particulate matter removing device of marine heavy-duty diesel engine EGR system |
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| CN104791147A true CN104791147A (en) | 2015-07-22 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510119470.4A Pending CN104791147A (en) | 2015-03-18 | 2015-03-18 | Particulate matter removing device of marine heavy-duty diesel engine EGR system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956405A (en) * | 2018-09-21 | 2018-12-07 | 云南武易高速公路建设指挥部 | A kind of engineering construction atmospheric environment dust monitoring method |
| CN109060622A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of atmospheric environment lung particulate matter monitoring device for engineering construction |
| CN109060621A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of monitoring device of powder-like waste for highway engineering |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
| CN112295319A (en) * | 2019-08-02 | 2021-02-02 | 孙正和 | Filter device |
| CN114320675A (en) * | 2020-09-29 | 2022-04-12 | 长城汽车股份有限公司 | Exhaust gas recirculation system and vehicle |
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| CN1671954A (en) * | 2002-07-25 | 2005-09-21 | 里法特·A·卡梅尔 | Exhaust after-treatment system for the reduction of pollutants from diesel engine exhaust and related method |
| CN201714510U (en) * | 2010-02-01 | 2011-01-19 | 潍柴动力股份有限公司 | Dimethyl ether low-pressure exhaust gas recirculation system |
| CN101526042B (en) * | 2008-12-23 | 2011-07-06 | 天津大学 | Electronic control method of variable gas inlet and exhaust system of compression ignition engine |
| CN103541835A (en) * | 2013-09-30 | 2014-01-29 | 哈尔滨东安汽车发动机制造有限公司 | Turbocharged engine with cooling exhaust recirculation technology |
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2015
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Patent Citations (5)
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| CN1262379A (en) * | 1999-01-29 | 2000-08-09 | 曹毅文 | Self-suction combustion-promoting purifier for tail gas of engine |
| CN1671954A (en) * | 2002-07-25 | 2005-09-21 | 里法特·A·卡梅尔 | Exhaust after-treatment system for the reduction of pollutants from diesel engine exhaust and related method |
| CN101526042B (en) * | 2008-12-23 | 2011-07-06 | 天津大学 | Electronic control method of variable gas inlet and exhaust system of compression ignition engine |
| CN201714510U (en) * | 2010-02-01 | 2011-01-19 | 潍柴动力股份有限公司 | Dimethyl ether low-pressure exhaust gas recirculation system |
| CN103541835A (en) * | 2013-09-30 | 2014-01-29 | 哈尔滨东安汽车发动机制造有限公司 | Turbocharged engine with cooling exhaust recirculation technology |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108956405A (en) * | 2018-09-21 | 2018-12-07 | 云南武易高速公路建设指挥部 | A kind of engineering construction atmospheric environment dust monitoring method |
| CN109060622A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of atmospheric environment lung particulate matter monitoring device for engineering construction |
| CN109060621A (en) * | 2018-09-21 | 2018-12-21 | 云南武易高速公路建设指挥部 | A kind of monitoring device of powder-like waste for highway engineering |
| CN109238932A (en) * | 2018-09-21 | 2019-01-18 | 中国科学院地质与地球物理研究所 | A kind of highway engineering atmospheric environment lung particulate matter monitoring method |
| CN112295319A (en) * | 2019-08-02 | 2021-02-02 | 孙正和 | Filter device |
| CN112295319B (en) * | 2019-08-02 | 2022-07-15 | 孙正和 | Filter device |
| CN114320675A (en) * | 2020-09-29 | 2022-04-12 | 长城汽车股份有限公司 | Exhaust gas recirculation system and vehicle |
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Application publication date: 20150722 |