CN201003443Y - Diesel engine exhaust system with fuel reforming mechanism - Google Patents
Diesel engine exhaust system with fuel reforming mechanism Download PDFInfo
- Publication number
- CN201003443Y CN201003443Y CNU2007200337294U CN200720033729U CN201003443Y CN 201003443 Y CN201003443 Y CN 201003443Y CN U2007200337294 U CNU2007200337294 U CN U2007200337294U CN 200720033729 U CN200720033729 U CN 200720033729U CN 201003443 Y CN201003443 Y CN 201003443Y
- Authority
- CN
- China
- Prior art keywords
- diesel engine
- fuel
- fuel oil
- exhaust
- reformer
- 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 - Lifetime
Links
- 238000002407 reforming Methods 0.000 title claims abstract description 21
- 239000000446 fuel Substances 0.000 title claims description 32
- 239000000295 fuel oil Substances 0.000 claims abstract description 21
- 239000003054 catalyst Substances 0.000 claims abstract description 12
- 239000012876 carrier material Substances 0.000 claims abstract description 10
- 239000002912 waste gas Substances 0.000 claims abstract description 7
- 239000004484 Briquette Substances 0.000 claims abstract 2
- 239000007789 gas Substances 0.000 claims description 24
- 229910052878 cordierite Inorganic materials 0.000 claims 1
- JSKIRARMQDRGJZ-UHFFFAOYSA-N dimagnesium dioxido-bis[(1-oxido-3-oxo-2,4,6,8,9-pentaoxa-1,3-disila-5,7-dialuminabicyclo[3.3.1]nonan-7-yl)oxy]silane Chemical compound [Mg++].[Mg++].[O-][Si]([O-])(O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2)O[Al]1O[Al]2O[Si](=O)O[Si]([O-])(O1)O2 JSKIRARMQDRGJZ-UHFFFAOYSA-N 0.000 claims 1
- 238000009413 insulation Methods 0.000 claims 1
- 239000002245 particle Substances 0.000 abstract description 7
- 230000000694 effects Effects 0.000 abstract description 3
- 230000009286 beneficial effect Effects 0.000 abstract 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 15
- 229910052739 hydrogen Inorganic materials 0.000 description 15
- 239000001257 hydrogen Substances 0.000 description 15
- 238000005516 engineering process Methods 0.000 description 10
- 238000002485 combustion reaction Methods 0.000 description 9
- 239000002283 diesel fuel Substances 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000000034 method Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 238000011161 development Methods 0.000 description 2
- 238000009792 diffusion process Methods 0.000 description 2
- 239000003502 gasoline Substances 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000007921 spray Substances 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 238000007233 catalytic pyrolysis Methods 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 239000012774 insulation material Substances 0.000 description 1
- 230000003137 locomotive effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 238000002303 thermal reforming Methods 0.000 description 1
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
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model relates to a diesel engine emission system that has a fuel oil reforming mechanism, which aims to solve the problems of controlling and reducing the harmful emissions of the diesel engine and the consumption of the fuel oil. The utility model is characterized in that: a reformed waste gas control valve is connected on the exhaust pipe in parallel; the exhaust pipe port is communicated with the air inlet of the fuel oil reformer; the air inlet of the fuel oil reformer is communicated with the air outlet of the reformed waste gas control valve through a three way type pipe; a honeycomb briquette catalyst carrier material is arranged in the fuel oil reformer along the axial direction. The utility model has the beneficial technical effects as follows: the emission of NOX will be reduced by about 50 percent and the emission of particles is almost not increased; to increase the effective power and thermal efficiency of the engine and unlock the difficult problem of NO(X)-particles of the diesel engine.
Description
Technical field
The utility model relates to diagrams of diesel exhaust systems.
Background technique
Diesel engine is compared with petrol engine, advantage such as have that thermal efficiency height, power are big, good reliability, long service life, fuel economy are good.Therefore, be widely used in the place of high-power demands such as automobile, locomotive, boats and ships, farm machinery, generator set.And along with the progress of the light and the control technique of diesel engine, diesel engine also is widely used on the car.
The HC of diesel engine for automobile, CO discharging is less, but its NO
xVery high with particle emission.Particle emission particularly, it makes diesel engine be thought by mistake be unclean motor by people.Particularly, add " NO in the Exhaust Control for Diesel Engine along with the increasingly stringent of diesel emission rules
x-particulate " constraint of compromise curve, the emission control cost of diesel engine also increases day by day.And, the NO of diesel engine
xDischarging mainly is to control by exhaust gas recirculation, but it is a cost to sacrifice engine fuel economy.These factors have all limited development of diesel.
The fuel reforming technology utilizes steam reformation, partial oxidation, confession thermal reforming and catalytic pyrolysis technology that fuel reformings such as rock gas, coal and living beings and alcohols are hydrogen or rich hydrogen mixed gas exactly, both at home and abroad very early to this Study on Technology starting, but be to be used on the fuel cell mostly, the act as a fuel fuel of battery of the hydrogen obtain reformed.But advantages such as hydrogen has that calorific value is the highest, flame propagation speed, ignition energy is low and diffusion coefficient is big are considered to the most promising substitute fuel of internal-combustion engine always.Limited by production and storage problem, hydrogen is difficult to directly be used on the internal-combustion engine.The purpose of diesel exhaust reformation technology is exactly to produce hydrogen on diesel engine in real time.Its essence is to introduce part diesel oil and waste gas to fuel reformer, and both produce hydrogen in the catalyst surface haptoreaction, and the rich hydrogen mixed gas instead of part EGR gas after the reformation enters in the cylinder, improves the burning quality of diesel oil in the cylinder.Because combustion of hydrogen can reduce the quantity of superheat region in the cylinder, and allow to use the bigger lean combustion of air fuel ratio, therefore can reduce NO simultaneously
xAnd particle emission, and can improve the thermal efficiency and the burning quality of motor.Just because of advantage like this is arranged, abroad gasoline and diesel oil reformation Study on Technology are paid attention to day by day, also actively inquiring into the feasibility of utilizing the fuel reforming technology to enlarge HCCI burning operating range.Compare abroad, though the domestic researcher of having related to the fuel reforming technology, also mostly is to be applied to fuel cell, yet there are no at gasoline and diesel exhaust reformation technical research.
In recent years, along with the increasingly stringent of diesel emission rules, and to an urgent demand of internal-combustion engine the Economy, " NO of diesel engine
x-particulate " compromise curve become the crucial scientific and technological problem that presses for solution in the automobile industry development.
The model utility content
The purpose of this utility model is, research diesel exhaust reformation technology, it and egr system are combined, to control simultaneously and to reduce harmful emission of diesel engine thing and fuel consume, high efficiency, the new approach of combustion with reduced pollutants developing for diesel engine provide a kind of diagrams of diesel exhaust systems with fuel reforming mechanism.
Concrete structural design scheme is as follows:
Diagrams of diesel exhaust systems with fuel reforming mechanism comprises diesel engine intake pipe, outlet pipe, is being communicated with EGR control valve between suction tude and outlet pipe, and described EGR control valve is a vacuum diaphragm chip architecture valve,
A reformation exhaust gas control valve in parallel on A, the outlet pipe;
B, exhaust pipe mouth are being communicated with the suction port of fuel oil reformer, and the suction port of fuel oil reformer is being communicated with the air outlet of reformation exhaust gas control valve by three-way pipe;
Described fuel oil reformer is a cylindrical tube shape, is provided with honeycomb coaly catalyst carrier material in it vertically, and axially two ends are for falling bell mouth shape, and an end is a suction port, and the other end is a relief opening; Fuel oil reformer suction port one side is provided with the fuel reforming nozzle;
The relief opening of fuel oil reformer is being communicated with the diesel engine intake pipe by bypass tube.
Described catalyst carrier material is a steinheilite, and honeycomb coaly, diameter are 30-60mm, and catalyzer is distributed on the carrier; Carrier is fixed in the fuel oil reformer, is provided with insulating between honeycomb coaly catalyst carrier material and the fuel oil reformer tube inwall.
Useful technique effect of the present utility model is: in general, compare the ordinary diesel oil machine, the diesel engine of band gas recirculation system, NO
xDischarging reduces about 30%, and particle emission can increase by 90%.And have the diesel engine of waste gas reformation technology and gas recirculation system, and the NOX discharging can reduce about 50%, and particle emission increases hardly.
The utility model is considered NO according to claimant's correlative study work and up-to-date in the world combustion study trend
xThe formation condition of discharging and the " NO of diesel engine
x-particulate " the compromise curve law, proposition utilizes the hydrogen-rich gas of diesel exhaust reforming system generation as diesel dope, and in conjunction with the exhaust gas recirculation measure, reduces the NO of motor simultaneously
xAnd particulate emission, and the useful horsepower and the thermal efficiency of raising motor, crack diesel engine " NO
x-particulate " difficult problem.
Description of drawings
Fig. 1 is the utility model structural representation,
Fig. 2 is the fuel reformer structural representation,
Fig. 3 is the A-A sectional view of Fig. 2.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described by embodiment.
Embodiment:
Diagrams of diesel exhaust systems with fuel reforming mechanism comprises diesel engine intake pipe 1, outlet pipe 2, is being communicated with EGR control valve 3 between suction tude 1 and outlet pipe 2, and EGR control valve is a vacuum diaphragm chip architecture valve.
A reformation exhaust gas control valve 4 in parallel on outlet pipe 2;
Be communicated with the suction port of fuel oil reformer 5 at exhaust pipe mouth, the suction port of fuel oil reformer 5 is being communicated with the air outlet of reformation exhaust gas control valve 4 by three-way pipe;
The relief opening of fuel oil reformer 5 is being communicated with diesel engine intake pipe 1 by bypass tube 9.
Catalyst carrier material is a steinheilite, and honeycomb coaly, diameter are 30-60mm, and catalyzer is evenly coated on the carrier; Carrier is fixed in the fuel oil reformer, and insulating is arranged between the two, guarantees to reach fast in the carrier 300 ℃ of the initiation temperatures of catalyzer.
The working principle of this emission control systems is: the NO that at first utilizes exhaust gas recirculation measure control diesel engine
xDischarging, EGR control valve 3 can be according to the ratio of operating mode needs control EGR, and EGR control valve can be chosen according to the diesel engine model for vacuum diaphragm chip architecture commonly used.After general diesel engine used EGR control valve, its Economy variation and carbon smoke exhaust can increase.Increase fuel reformer in this emission control systems, utilized hydrogen or the rich hydrogen mixed gas that obtains of reforming to improve the in-cylinder combustion quality, reduced carbon smoke exhaust.Here it is based on the model utility point of the Exhaust Control for Diesel Engine system of fuel reforming technology.Its basic functional principle is: utilize the reformation exhaust gas control valve to introduce the inlet that an amount of diesel exhaust gas enters fuel reformer, spray into a part of diesel oil by the fuel reforming nozzle to reformer simultaneously, diesel oil that sprays into and waste gas are under the effect of catalyzer, reaction generates hydrogen or rich hydrogen mixed gas, then, this part gas is introduced in the intake duct of diesel engine by pipeline, enters in-cylinder combustion.Because flame propagation speed, the ignition energy of hydrogen are low and diffusion coefficient is big, its affiliation that adds reduces superheat region quantity in the cylinder, improves burning quality, reduces the NO of diesel engine simultaneously
xAnd carbon smoke exhaust.The aperture that the reformation exhaust gas control valve comes control valve according to the size of exhaust pressure, thereby what of the exhausted air quantity that control is introduced.Therefore, the reformation exhaust gas control valve is also selected the EGR valve of vacuum diaphragm chip architecture for use.
Claims (2)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200337294U CN201003443Y (en) | 2007-01-19 | 2007-01-19 | Diesel engine exhaust system with fuel reforming mechanism |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200337294U CN201003443Y (en) | 2007-01-19 | 2007-01-19 | Diesel engine exhaust system with fuel reforming mechanism |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201003443Y true CN201003443Y (en) | 2008-01-09 |
Family
ID=39038981
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200337294U Expired - Lifetime CN201003443Y (en) | 2007-01-19 | 2007-01-19 | Diesel engine exhaust system with fuel reforming mechanism |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201003443Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439697C (en) * | 2007-01-19 | 2008-12-03 | 合肥工业大学 | Diesel engine exhaust system with fuel reforming mechanism |
| CN102352802A (en) * | 2011-11-04 | 2012-02-15 | 天津农学院 | Plasma venting reforming gasoline hydrogen production device and system |
| CN106032779A (en) * | 2016-06-08 | 2016-10-19 | 长安大学 | A homogeneous compression ignition engine fuel online upgrading system and method |
| CN107587956A (en) * | 2016-07-06 | 2018-01-16 | 现代自动车株式会社 | Fuel reforming system for vehicle |
| CN108625977A (en) * | 2018-06-08 | 2018-10-09 | 长春工程学院 | A Diesel Engine Exhaust Gas Reforming Stratified Combustion System and Control Method |
-
2007
- 2007-01-19 CN CNU2007200337294U patent/CN201003443Y/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100439697C (en) * | 2007-01-19 | 2008-12-03 | 合肥工业大学 | Diesel engine exhaust system with fuel reforming mechanism |
| CN102352802A (en) * | 2011-11-04 | 2012-02-15 | 天津农学院 | Plasma venting reforming gasoline hydrogen production device and system |
| CN106032779A (en) * | 2016-06-08 | 2016-10-19 | 长安大学 | A homogeneous compression ignition engine fuel online upgrading system and method |
| CN107587956A (en) * | 2016-07-06 | 2018-01-16 | 现代自动车株式会社 | Fuel reforming system for vehicle |
| CN108625977A (en) * | 2018-06-08 | 2018-10-09 | 长春工程学院 | A Diesel Engine Exhaust Gas Reforming Stratified Combustion System and Control Method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070119 |
|
| AV01 | Patent right actively abandoned |
Effective date of abandoning: 20070119 |
|
| C25 | Abandonment of patent right or utility model to avoid double patenting |