CN108223086B - Heating system for SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation - Google Patents
Heating system for SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation Download PDFInfo
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- CN108223086B CN108223086B CN201711384370.XA CN201711384370A CN108223086B CN 108223086 B CN108223086 B CN 108223086B CN 201711384370 A CN201711384370 A CN 201711384370A CN 108223086 B CN108223086 B CN 108223086B
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- heating
- scr
- urea supply
- supply pipeline
- power generation
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N5/00—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat
- F01N5/025—Exhaust or silencing apparatus combined or associated with devices profiting from exhaust energy the devices using heat the device being thermoelectric generators
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2006—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating
- F01N3/2013—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using electric or magnetic heating means
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/08—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous
- F01N3/10—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust
- F01N3/18—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control
- F01N3/20—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for rendering innocuous by thermal or catalytic conversion of noxious components of exhaust characterised by methods of operation; Control specially adapted for catalytic conversion ; Methods of operation or control of catalytic converters
- F01N3/2066—Selective catalytic reduction [SCR]
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/02—Adding substances to exhaust gases the substance being ammonia or urea
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N2610/00—Adding substances to exhaust gases
- F01N2610/14—Arrangements for the supply of substances, e.g. conduits
- F01N2610/1486—Means to prevent the substance from freezing
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
-
- 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 discloses a system for heating an SCR (selective catalytic reduction) urea supply pipeline by utilizing automobile exhaust thermoelectric generation, which relates to the technical field of utilization of automobile exhaust waste heat and exhaust aftertreatment, and comprises an automobile exhaust thermoelectric generation device, an SCR urea supply pipeline heating device, an SCR reactor, a urea pump, a urea tank and a storage battery, wherein the automobile exhaust thermoelectric generation device comprises an automobile engine, a thermoelectric generation set fixed on an exhaust pipeline through a fixing mechanism, a cooling water tank connected with the thermoelectric generation set, a circulating water pump, a radiator and a DC-DC voltage stabilizing circuit; SCR urea supply pipe heating device includes SCR urea supply pipe, realizes heating circuit and the control module to SCR urea supply pipe heating. The invention can utilize the tail gas to generate and store temperature difference when the automobile engine normally runs, and heat the SCR urea supply pipeline in a low-temperature environment, thereby realizing the recycling of low-grade energy of the automobile tail gas and the normal work of the SCR urea supply pipeline in the low-temperature environment.
Description
Technical Field
The invention relates to the technical field of utilization of automobile exhaust waste heat and exhaust aftertreatment, in particular to a heating system for an SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation.
Background
With the increasing year by year of the automobile keeping amount in China, the energy utilization efficiency of the automobile is more and more emphasized. However, in the working process of the automobile engine, about 30% -40% of energy is discharged to the atmosphere along with tail gas, and harmful gases such as NOx are generated at the same time, so that energy waste and environmental pollution are caused. In recent years, increasingly emerging energy crisis and stringent emission regulations have placed higher demands on engine energy utilization efficiency and control of NOx emissions. The thermoelectric generation technology is one of the technical means for recycling low-grade energy of automobile exhaust, and the main technology for reducing the NOx emission of an engine is Selective Catalytic Reduction (SCR) technology.
The operating condition of the engine changes frequently, and the temperature of the hot end of the thermoelectric generation set changes along with the change of the operating condition, so that the fluctuation of the output voltage of the thermoelectric generation set is large, and if the storage battery is charged directly, the service life of the battery is influenced, and even safety accidents are caused.
The urea aqueous solution used in the SCR system is liquid at normal temperature, but the urea aqueous solution can be solidified when the temperature is lower (lower than-11 ℃), and the problem is common in winter in northern areas of China. If the solidified urea aqueous solution in the SCR urea supply pipeline cannot be rapidly heated and melted, the SCR system cannot work normally.
At present, engine coolant is often adopted to heat the SCR urea supply pipeline, and the coolant can only effectively heat the SCR urea supply pipeline after the engine is warmed up. In addition, it is difficult to arrange a heating water pipe at the joint of the pipeline, which is likely to cause leakage of the engine coolant.
Disclosure of Invention
The invention aims to provide a technical means for generating power by utilizing the temperature difference of automobile exhaust and electrically heating an SCR urea supply pipeline in a low-temperature environment. The invention utilizes the waste heat of the automobile exhaust to carry out temperature difference power generation, does not need to additionally supply power to a heating device in the system, and can effectively solve the problem that the SCR system can not normally work due to the fact that the solidified urea in the SCR urea supply pipeline can not be melted and sprayed in time.
In order to achieve the purpose, the invention provides the following technical scheme:
a heating system for an SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation comprises an automobile exhaust temperature difference power generation device, an SCR urea supply pipeline heating device and a storage battery;
the automobile exhaust temperature difference power generation device comprises an automobile engine, wherein an exhaust pipeline of the automobile engine is fixedly connected with an SCR (selective catalytic reduction) reactor and a temperature difference power generation set in sequence, the temperature difference power generation set is connected with a circulating water pump, a cooling water tank and a radiator in sequence through a cooling water pipeline, and the temperature difference power generation set is also connected with a DC-DC voltage stabilizing circuit and a storage battery in sequence through a lead; the storage battery is connected with a control module of the SCR urea supply pipeline heating device, the control module is connected with a heating resistance wire in series, the heating resistance wire is wound on the SCR urea supply pipeline, two ends of the SCR urea supply pipeline are respectively in threaded connection with a nozzle of an SCR reactor and a urea tank, a urea pump is arranged on the SCR urea supply pipeline between the urea tank and the heating resistance wire, a temperature sensor is arranged on the urea pump, and the temperature sensor is connected with the control module; and the heating resistance wire and the SCR urea supply pipeline are coated with heat insulation layers at the peripheries.
In the scheme, the heat-insulating layer is made of asbestos.
In the scheme, the thermoelectric generation set is composed of thermoelectric generation sheets which are distributed according to the exhaust temperature gradient in a series-parallel connection combined mode.
In the scheme, the thermoelectric generation set is fixed on an exhaust pipeline of an automobile engine through a fixing mechanism.
In the above scheme, the rated voltage of the storage battery is 24V or 12V.
In the above scheme, the SCR urea supply pipeline is a metal pipe with uniform heat conduction.
In the scheme, the control module controls the heating resistance wire through a relay inside the control module, and the heating power of the supply pipeline is adjusted according to a temperature signal fed back by the temperature sensor to the SCR urea supply pipeline.
The invention has the beneficial effects that:
the invention utilizes the temperature difference power generation device to carry out temperature difference power generation by taking low-grade automobile exhaust as a heat source, adopts circulating water to cool the cold end of the temperature difference power generation set to ensure larger power generation temperature difference, and charges the storage battery after the voltage stabilization is carried out on the output end by utilizing the DC-DC voltage stabilizing circuit. The SCR urea supply pipeline heating device is connected with the heating resistance wire to heat the urea aqueous solution when the urea aqueous solution is solidified at a low temperature, and the control module is used for adjusting the heating power, so that the problem of low-temperature solidification of the urea aqueous solution in the SCR urea supply pipeline is solved while low-grade energy recovery is realized, the energy waste of an engine can be effectively reduced, and the pollutant emission is reduced.
Drawings
FIG. 1 is a general diagram of a heating system for an SCR urea supply pipeline by automobile exhaust thermoelectric power generation according to the present invention;
FIG. 2 is a schematic view of the thermoelectric generation sheet connection;
FIG. 3 is a schematic diagram of exemplary steps of a SCR urea supply line heating control method according to the present disclosure.
Wherein: the system comprises an automobile engine 1, an exhaust pipeline 2, an SCR reactor 3, a circulating water pump 4, a cooling water tank 5, a radiator 6, a fixing mechanism 7, a thermoelectric generation set 8, a thermoelectric generation sheet 8-1, a voltage stabilizing circuit 9-DC-DC 10, a control module 11, a storage battery 12, a heat insulation layer 13, a heating resistance wire 13, a urea pump 14, a urea tank 15, an SCR urea supply pipeline 16, a cooling water pipeline 17 and a temperature sensor 18.
Detailed Description
The invention is described in further detail below with reference to the following description of the drawings and the detailed description.
As shown in fig. 1, a system for heating an SCR urea supply pipeline by using automobile exhaust thermoelectric power generation, the system includes an automobile exhaust thermoelectric power generation device, an SCR urea supply pipeline heating device, an SCR reactor 3, a urea pump 14, a urea tank 15 and a storage battery 11 (rated voltage is 24V or 12V), the automobile exhaust thermoelectric power generation device includes an automobile engine 1, a thermoelectric power generation set 8, a fixing mechanism 7, a cooling water tank 5, a circulating water pump 4, a radiator 6 and a DC-DC voltage stabilizing circuit 9, the SCR urea supply pipeline heating device includes an SCR urea supply pipeline 16 (made of a metal pipe with uniform heat conduction), a heating resistance wire 13, a heat insulation layer 12 and a control module 10 (i.e., an ECU driving control unit); as shown in fig. 2, the thermoelectric generation group 8 is composed of thermoelectric generation pieces 8-1 which are distributed according to the exhaust temperature gradient and are combined in series-parallel connection, wherein the thermoelectric generation pieces 8-1 in the same row are connected in series, and the thermoelectric generation pieces 8-1 in different rows are connected in parallel;
the SCR reactor 3 and the thermoelectric generation set 8 are fixedly connected to the exhaust pipeline 2 of the automobile engine 1 in sequence, when the temperature difference power generation set 8 is installed, the temperature difference power generation set 8 is tightly attached to the exhaust pipeline 2 of the automobile engine 1 through bolts, and high-temperature-resistant heat-conducting silicone grease is uniformly covered in an interlayer between the temperature difference power generation set 8 and the automobile engine 1; the thermoelectric generation set 8 can also be installed and fixed in other forms, and only the good heat conduction effect of the two end surfaces of the thermoelectric generation sheet 8-1 is ensured;
the temperature difference power generation set 8 is sequentially connected with a circulating water pump 4, a cooling water tank 5 and a radiator 6 through a water pipeline, and the temperature difference power generation set 8 is further sequentially connected with a DC-DC voltage stabilizing circuit 9 and a storage battery 11 through a lead; the storage battery 11 is connected with a control module 10 of the SCR urea supply pipeline heating device, the control module 10 is connected with a heating resistance wire 13 in series through a lead, the heating resistance wire 13 is wound on an SCR urea supply pipeline 16, two ends of the SCR urea supply pipeline 16 are respectively in threaded connection with a nozzle of the SCR reactor 3 and a urea tank 15, a urea pump 14 is arranged on the SCR urea supply pipeline 16 between the urea tank 15 and the heating resistance wire 13, a temperature sensor 18 is arranged on the urea pump 14, and the temperature sensor 18 is connected with the control module 10 through a lead; the heating resistance wire 13 and the periphery of the SCR urea supply pipeline 16 are coated with a heat-insulating layer 12, and the heat-insulating layer 12 is made of asbestos; the control module 10 controls the heating resistance wire 13 through a relay inside the control module, and also feeds back a temperature signal in the SCR urea supply pipeline 16 according to the temperature sensor 18 to adjust the heating power of the supply pipeline.
The cold end of the thermoelectric generation set 8 is cooled by circulating water, and the cooling water cools the cold end of the thermoelectric generation set 8 through a cooling water tank 5 and a circulating water pump 4; the temperature of the cooling water rises after passing through the thermoelectric generation set 8, and the radiator 6 is additionally arranged on the cooling water pipeline 17 to cool the cooling water so as to reduce the temperature of the cooling water.
The flow and temperature of tail gas are fluctuant in the working process of an automobile engine, so that the output voltage and current of the thermoelectric generation device are unstable, and the DC-DC voltage stabilizing circuit 9 is additionally arranged at the output end of the thermoelectric generation set 8, so that the storage battery 11 can be directly charged.
In the embodiment, when the automobile engine 1 is started, the temperature sensor 18 arranged on the urea pump 14 feeds back a temperature signal in the SCR urea supply pipeline 16 to the control module 10, and when the temperature is lower than a set temperature (-5 ℃), the control module 10 is connected with the heating resistance wire 13 through a relay inside the control module; after the heating is performed at regular time, the control module 10 analyzes the temperature signal to determine whether the heating power needs to be adjusted, and stops heating when the temperature is higher than the set temperature, and the specific control is schematically shown in fig. 3.
The construction, features and functions of the present invention are described in detail in the embodiments illustrated in the drawings, but the present invention is not limited to the embodiments illustrated in the drawings, and all changes, modifications and equivalents of the embodiments which are made according to the idea of the present invention can be made without departing from the spirit of the present invention.
Claims (9)
1. A heating system for an SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation is characterized by comprising an automobile exhaust temperature difference power generation device, an SCR urea supply pipeline heating device and a storage battery (11);
the automobile exhaust temperature difference power generation device comprises an automobile engine (1), wherein an SCR (selective catalytic reduction) reactor (3) and a temperature difference power generation set (8) are fixedly connected to an exhaust pipeline (2) of the automobile engine (1) in sequence, the temperature difference power generation set (8) is sequentially connected with a circulating water pump (4), a cooling water tank (5) and a radiator (6) through a cooling water pipeline (17), and the temperature difference power generation set (8) is further sequentially connected with a DC-DC voltage stabilizing circuit (9) and a storage battery (11) through a lead; the storage battery (11) is connected with a control module (10) of the SCR urea supply pipeline heating device, the control module (10) is connected with a heating resistance wire (13) in series, the heating resistance wire (13) is wound on an SCR urea supply pipeline (16), two ends of the SCR urea supply pipeline (16) are respectively in threaded connection with a urea nozzle and a urea tank (15) of the SCR reactor (3), a urea pump (14) is arranged on the SCR urea supply pipeline (16) between the urea tank (15) and the heating resistance wire (13), a temperature sensor (18) is arranged on the urea pump (14), and the temperature sensor (18) is connected with the control module (10);
when an automobile engine (1) is started, a temperature sensor (18) arranged on a urea pump (14) feeds back a temperature signal in an SCR urea supply pipeline (16) to a control module (10), and when the temperature is lower than a set temperature, the control module (10) is switched on a heating resistance wire (13) through a relay inside the control module; after the timing heating, the control module (10) analyzes the temperature signal, judges whether the heating power needs to be adjusted or not, and stops heating when the temperature is higher than the set temperature.
2. The system for heating the SCR urea supply pipeline by utilizing the temperature difference power generation of the automobile exhaust as claimed in claim 1, wherein the heating resistance wire (13) and the SCR urea supply pipeline (16) are coated with the heat insulation layer (12) at the periphery.
3. The system for heating the SCR urea supply pipe by using the thermoelectric power generation of the automobile exhaust according to claim 2, wherein the heat insulation layer (12) is made of asbestos.
4. The system for heating the SCR urea supply pipeline by using the automobile exhaust thermoelectric generation as set forth in claim 1, wherein the thermoelectric generation set (8) is composed of thermoelectric generation sheets (8-1) in a series-parallel combination manner according to the exhaust temperature gradient distribution.
5. The system for heating the SCR urea supply pipe by using the thermoelectric power generation of the automobile exhaust according to claim 1, wherein the thermoelectric power generation set (8) is fixed on an exhaust pipe of the automobile engine (1) by a fixing mechanism (7).
6. The system for heating the SCR urea supply pipe by using the thermoelectric power generation of the automobile exhaust according to claim 5, wherein the thermoelectric power generation set (8) is fixed on the exhaust pipe of the automobile engine (1) by bolts.
7. The system for heating the SCR urea supply line by thermoelectric power generation of automobile exhaust according to claim 1, wherein the rated voltage of the battery (11) is 24V or 12V.
8. The system for heating the SCR urea supply pipeline by utilizing the temperature difference power generation of the automobile exhaust as recited in claim 1, wherein the SCR urea supply pipeline (16) is a metal pipe with uniform heat conduction.
9. The system for heating the SCR urea supply pipeline by utilizing the automobile exhaust thermoelectric power generation as recited in claim 1, wherein the control module (10) controls the heating resistance wire (13) through a relay inside the control module, and the heating power of the supply pipeline is adjusted according to a temperature signal fed back by the temperature sensor (18) in the SCR urea supply pipeline (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711384370.XA CN108223086B (en) | 2017-12-20 | 2017-12-20 | Heating system for SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201711384370.XA CN108223086B (en) | 2017-12-20 | 2017-12-20 | Heating system for SCR urea supply pipeline by utilizing automobile exhaust temperature difference power generation |
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| CN108223086A CN108223086A (en) | 2018-06-29 |
| CN108223086B true CN108223086B (en) | 2020-06-09 |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109763879B (en) * | 2019-01-31 | 2020-10-30 | 黄河科技学院 | Automobile exhaust treatment device |
| CN110206620B (en) * | 2019-05-06 | 2021-01-15 | 江苏大学 | Self-feedback adjusting baffle type SCR urea mixer |
| CN111102048A (en) * | 2019-12-17 | 2020-05-05 | 凯龙高科技股份有限公司 | Heating and unfreezing control system and method for urea pump of SCR system |
| CN113294938B (en) * | 2021-06-16 | 2021-12-03 | 江苏大学 | Coupling heat pump driven by thermoelectric stack |
| CN113931723A (en) * | 2021-10-12 | 2022-01-14 | 河北工业大学 | Device and method for reducing urea crystallization of SCR system |
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| CN102906385A (en) * | 2010-05-25 | 2013-01-30 | 五十铃自动车株式会社 | Scr system |
| CN203532016U (en) * | 2013-11-04 | 2014-04-09 | 中国重汽集团济南动力有限公司 | Urea spray feeding device with heater |
| CN106812625A (en) * | 2017-03-20 | 2017-06-09 | 华东交通大学 | A kind of automobile-used cooling water tank temperature difference electricity generation device |
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| JP2005299417A (en) * | 2004-04-07 | 2005-10-27 | Toyota Motor Corp | Exhaust heat power generating device and automobile equipped with the same |
| DE102008022991A1 (en) * | 2008-05-09 | 2009-11-12 | Emitec Gesellschaft Für Emissionstechnologie Mbh | Device for conveying a reducing agent and method for producing a motor vehicle |
| DE102009058948A1 (en) * | 2009-12-17 | 2011-06-22 | J. Eberspächer GmbH & Co. KG, 73730 | Exhaust system with thermoelectric generator |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102906385A (en) * | 2010-05-25 | 2013-01-30 | 五十铃自动车株式会社 | Scr system |
| CN203532016U (en) * | 2013-11-04 | 2014-04-09 | 中国重汽集团济南动力有限公司 | Urea spray feeding device with heater |
| CN106812625A (en) * | 2017-03-20 | 2017-06-09 | 华东交通大学 | A kind of automobile-used cooling water tank temperature difference electricity generation device |
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