CN113944534A - Device for heating urea system by utilizing post-treatment heat - Google Patents

Device for heating urea system by utilizing post-treatment heat Download PDF

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Publication number
CN113944534A
CN113944534A CN202111265367.2A CN202111265367A CN113944534A CN 113944534 A CN113944534 A CN 113944534A CN 202111265367 A CN202111265367 A CN 202111265367A CN 113944534 A CN113944534 A CN 113944534A
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CN
China
Prior art keywords
water
pipeline
urea
heating
post
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.)
Pending
Application number
CN202111265367.2A
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Chinese (zh)
Inventor
吴平安
李盈盈
淳海晏
关泽强
范祯科
贾宁
胡骁
王俊宝
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Anhui Jianghuai Automobile Group Corp
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Anhui Jianghuai Automobile Group Corp
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Filing date
Publication date
Application filed by Anhui Jianghuai Automobile Group Corp filed Critical Anhui Jianghuai Automobile Group Corp
Priority to CN202111265367.2A priority Critical patent/CN113944534A/en
Publication of CN113944534A publication Critical patent/CN113944534A/en
Pending legal-status Critical Current

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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H1/00—Heating, cooling or ventilating [HVAC] devices
    • B60H1/02—Heating, cooling or ventilating [HVAC] devices the heat being derived from the propulsion plant
    • 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
    • F01N3/2046—Periodically cooling catalytic reactors
    • 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]
    • 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
    • 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
    • F01N2610/1453—Sprayers or atomisers; Arrangement thereof in the exhaust apparatus

Abstract

The invention discloses a device for heating a urea system by utilizing post-treatment heat, which comprises a urea box, a post-treatment device and a cooling water tank, wherein a tail gas channel is arranged in the post-treatment device; a water inlet is arranged above the heating pipeline and is connected with the cooling water tank through a water inlet pipeline; a water outlet is arranged below the heating pipeline, the water outlet is connected with a cooling water flow inlet of the urea box through a water outlet pipeline, and a water pump is arranged on the water outlet pipeline. The cooling water outlet of the urea box is connected with the water inlet pipeline through a water return pipeline, the post-treatment device is further provided with a urea nozzle, and the water inlet and the water outlet of the urea nozzle are respectively connected with the water outlet pipeline and the water return pipeline, so that the urea nozzle is cooled by cooling liquid in the water outlet pipeline. The invention can effectively avoid the overlong urea heating pipeline and the loss of a large amount of heat, and efficiently utilizes the high-temperature tail gas after treatment.

Description

Device for heating urea system by utilizing post-treatment heat
Technical Field
The invention relates to the technical field of automobile aftertreatment, in particular to a device for heating a urea system by utilizing aftertreatment heat.
Background
The heavy-duty diesel vehicle can comprehensively implement the national emission standard, the current national post-treatment technical route is mainly DOC + DPF + SCR + ASC, wherein the SCR system injects urea into an exhaust pipe through a urea injection system, and nitrogen oxide and urea are subjected to reduction reaction under the action of a catalyst, so that the aim of removing the nitrogen oxide is fulfilled. When the environmental temperature is reduced to-11 ℃ of the freezing point temperature of urea, particularly after a vehicle is subjected to cold soaking for more than 8 hours, a large amount of urea in the urea box is easy to freeze, and the normal operation of the urea injection function of the SCR system is affected, so that the urea system needs to be heated and thawed.
The technical scheme of the existing urea system heating is that high-temperature cooling liquid is obtained from an engine water intake, a urea box is heated through a heating pipeline, and after a certain temperature is reached, the heating pipeline is cut off through a water cut-off electromagnetic valve, and heating is stopped. The circulating cooling liquid (driven by a water pump of the engine body) cools the urea nozzle at the same time, and finally flows back to the water return port of the engine. However, there are the following problems:
1. the water intake and the water return of the engine are generally positioned at the front end of the engine and are far away from the urea box and the urea nozzle, so that a large amount of heat is dissipated through a pipeline in the heating process, and the heat conversion efficiency of the engine is not improved;
2. the heating pipelines are arranged along the frame, occupy larger space and are not beneficial to the arrangement of the wire harness and the brake pipeline of the whole vehicle;
3. the environmental temperature is low in winter, partial heat of an engine is shared by a urea system, the heating capacity of a warm air system is limited, and the temperature in a cab is low;
4. the exhaust waste heat of the post-treatment is not recycled.
Therefore, how to provide a urea system heating device which can effectively avoid the urea heating pipeline from being too long and greatly dissipate heat and utilize the high-temperature tail gas after treatment becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
The invention aims to provide a device for heating a urea system by utilizing post-treatment heat, which can effectively avoid overlong urea heating pipelines and large heat loss, and efficiently utilize the post-treated high-temperature tail gas.
According to one aspect of the invention, the device for heating the urea system by utilizing the post-treatment heat comprises a urea box, a post-treatment device and a cooling water box, wherein a tail gas channel is arranged in the post-treatment device, a heating pipeline is sleeved on the outer side of the tail gas channel, and a hot water circulation cavity is reserved between the heating pipeline and the tail gas channel; a water inlet is formed above the heating pipeline and is connected with the cooling water tank through a water inlet pipeline; a water outlet is arranged below the heating pipeline, the water outlet is connected with a cooling water flow inlet of the urea box through a water outlet pipeline, and a water pump is arranged on the water outlet pipeline;
the cooling water outlet of the urea box is connected with the water inlet pipeline through a water return pipeline, the post-treatment device is further provided with a urea nozzle, and a water inlet and a water outlet of the urea nozzle are respectively connected with the water outlet pipeline and the water return pipeline through branch pipes, so that cooling liquid in the water outlet pipeline is right for cooling the urea nozzle.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat of the present invention, the cooling water tank is provided with a water replenishing port, and the water replenishing port is used for artificially replenishing cooling liquid.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat of the present invention, the heating pipeline is further provided with an exhaust port, and the exhaust port is connected to the cooling water tank through an exhaust pipeline.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat, a connection between the water inlet of the urea nozzle and the water outlet pipe is located at the rear side of the water pump.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat of the present invention, a connection between the water outlet of the urea nozzle and the water return pipe is located between the urea tank and the water inlet pipe.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat of the present invention, the exhaust gas channel is further provided with a plurality of heat pipes, two ends of each heat pipe are connected to the side wall of the exhaust gas channel, and the interiors of the heat pipes are communicated with the hot water circulation cavity.
Optionally, according to the apparatus for heating a urea system by using post-treatment heat of the present invention, the heat pipe is disposed longitudinally, and an opening at an upper end of the heat pipe corresponds to the water inlet of the heating pipe; the lower end opening corresponds to the water outlet of the heating pipeline.
The device for heating the urea system by utilizing the post-treatment heat disclosed by the invention can effectively avoid overlong urea heating pipeline and large heat loss, and efficiently utilizes the post-treated high-temperature tail gas. The high-temperature tail gas with aftertreatment heats the heating pipeline through a heat conduction mode, and the urea box is heated and the urea nozzle is cooled through cooling liquid circulation, so that the defects of the prior art are effectively overcome. Meanwhile, the post-treatment, the heating pipeline, the urea nozzle and the urea box are centralized in relative position, so that the length of the heating pipeline is greatly shortened, the pipeline arrangement is convenient and reliable, and the heat consumption is reduced; the heat of the engine body is not heated by a urea system, more heat is used for a warm air system, and the heating effect of a cab is improved; and the waste heat emission of the after-treatment tail gas is reduced.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic diagram of a disclosed apparatus for heating a urea system using post-treatment heat;
FIG. 2 is a front cross-sectional view of a heating conduit and exhaust gas passageway in accordance with the present disclosure;
FIG. 3 is a side cross-sectional view of a heating conduit and exhaust passage as disclosed herein.
Description of reference numerals: 1-a post-treatment device; 2-a urea tank; 3-a cooling water tank; 31-water replenishing port; 4-heating the pipeline; 41-cooling liquid inlet; 42-coolant outlet; 43-an exhaust port; 5-a water inlet pipeline; 6-an exhaust duct; 7-a water outlet pipeline; 71-a water pump; 8-a water return pipeline; 9-urea nozzles; 10-hot water circulation chamber; 11-a tail gas channel; 12-a heat pipe.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
According to the drawings of fig. 1 to 3, the invention provides a device for heating a urea system by utilizing post-treatment heat, which comprises a urea tank 2, a post-treatment device 1 and a cooling water tank 3, wherein a tail gas channel 11 is arranged in the post-treatment device 1, a heating pipeline 4 is sleeved outside the tail gas channel 11, and a hot water circulation cavity 10 is reserved between the heating pipeline 4 and the tail gas channel 11; a cooling liquid inlet 41 is arranged above the heating pipeline 4, and the cooling liquid inlet 41 is connected with the cooling water tank 3 through a water inlet pipeline 5; a cooling liquid outlet 42 is arranged below the heating pipeline 4, the cooling liquid outlet 42 is connected with a cooling water inlet of the urea box 2 through a water outlet pipeline 7, and a water pump 71 is arranged on the water outlet pipeline 7.
The cooling water outlet of the urea box 2 is connected with the water inlet pipe 5 through a water return pipe 8, the post-treatment device 1 is further provided with a urea nozzle 9, and the water inlet and the water outlet of the urea nozzle 9 are respectively connected with the water outlet pipe 7 and the water return pipe 8 through branch pipes, so that the urea nozzle 9 is cooled by cooling liquid in the water outlet pipe 7.
In implementation, high-temperature cooling liquid flows out from a cooling liquid outlet 42 of the heating pipeline 4, the cooling liquid is driven to circulate by the water pump 71, a part of the cooling liquid flows into the urea box 2 through the water outlet pipeline 7 to be heated, then the cooling liquid flowing out of the urea box 2 flows back to the heating water box through the water return pipeline 8, and after the urea reaches a certain temperature, the heating pipeline is cut off by the water cut-off electromagnetic valve, and heating is stopped; another part of the cooling liquid flows to the urea nozzle 9 to cool it and finally flows back to the heating water tank. In addition, the cooling water bottle is used for storing cooling liquid.
Furthermore, a water replenishing port 31 is provided on the cooling water tank 3, and the cooling water can be replenished manually through the water replenishing port 31.
Further, still be equipped with gas vent 43 on the heating pipeline 4, gas vent 43 is connected with cooling water tank 3 through exhaust duct 6 for the steam in the exhaust water tank, the coolant liquid is under the continuous heating of high temperature tail gas, and the steam in the heating pipeline 4 escapes through this mouth, in order to avoid the heating pipeline 4 internal gas pressure increase and the explosion condition appears.
Further, the junction of the water inlet of the urea nozzle 9 and the water outlet pipe 7 is located at the rear side of the water pump 71, so that the water pump 71 can push part of the cooling liquid to the urea nozzle 9, and the circulation of the cooling liquid of the urea nozzle 9 is promoted.
Still further, the junction of the water outlet of the urea nozzle 9 and the water return pipe 8 is located between the urea tank 2 and the water inlet pipe 5.
Further, a plurality of heat pipes 12 are further arranged in the exhaust gas channel 11, two ends of each heat pipe 12 are connected with the side wall of the exhaust gas channel 11, and the interiors of the heat pipes 12 are communicated with the hot water circulation cavity 10. The contact area of the high-temperature tail gas and the cooling liquid is increased through the heat conduction pipe 12, and conversion of waste heat is facilitated.
Alternatively, according to the device for heating a urea system by post-treatment heat of the present invention, the heat pipe 12 is longitudinally arranged, and the upper end opening thereof corresponds to the water inlet of the heating pipe 4; the lower end opening corresponds to the water outlet of the heating pipeline 4. So that the cooling liquid can rapidly enter the heat conduction pipe 12, and the heat treatment of the cooling liquid by the high-temperature tail gas is accelerated.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.

Claims (7)

1. A device for heating a urea system by utilizing post-treatment heat is characterized by comprising a urea box, a post-treatment device and a cooling water tank, wherein a tail gas channel is arranged in the post-treatment device, a heating pipeline is sleeved on the outer side of the tail gas channel, and a hot water circulation cavity is reserved between the heating pipeline and the tail gas channel; a cooling liquid inlet is arranged above the heating pipeline and is connected with the cooling water tank through a water inlet pipeline; a cooling liquid outlet is arranged below the heating pipeline, the cooling liquid outlet is connected with a cooling water flow inlet of the urea box through a water outlet pipeline, and a water pump is arranged on the water outlet pipeline;
the cooling water outlet of the urea box is connected with the water inlet pipeline through a water return pipeline, the post-treatment device is further provided with a urea nozzle, and a water inlet and a water outlet of the urea nozzle are respectively connected with the water outlet pipeline and the water return pipeline through branch pipes, so that cooling liquid in the water outlet pipeline is right for cooling the urea nozzle.
2. The apparatus for heating a urea system with post-treatment heat according to claim 1, wherein a water replenishment port is provided on said cooling water tank, said water replenishment port being used for manually replenishing cooling fluid.
3. The apparatus for utilizing post-treatment heat for heating a urea system of claim 1, wherein the heating line further comprises an exhaust port, and the exhaust port is connected to the cooling water tank through an exhaust line.
4. The apparatus for heating a urea system using post-treatment heat according to claim 1, wherein a junction of the water inlet of the urea nozzle and the water outlet pipe is located at a rear side of the water pump.
5. The apparatus for heating a urea system using post-treatment heat according to claim 1, wherein a junction of the water outlet of the urea nozzle and the water return pipe is located between the urea tank and the water inlet pipe.
6. The apparatus of claim 1, wherein a plurality of heat pipes are disposed in the exhaust gas channel, and both ends of each heat pipe are connected to the sidewalls of the exhaust gas channel, and the interiors of the heat pipes are connected to the hot water flowing chamber.
7. The apparatus for heating a urea system with post-treatment heat according to claim 6, wherein said heat pipe is arranged longitudinally and has an upper opening corresponding to the water inlet of said heating pipe; the lower end opening corresponds to the water outlet of the heating pipeline.
CN202111265367.2A 2021-10-28 2021-10-28 Device for heating urea system by utilizing post-treatment heat Pending CN113944534A (en)

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Application Number Priority Date Filing Date Title
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114934856A (en) * 2022-06-02 2022-08-23 江苏科技大学 Marine ejector waste heat recovery system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065578A1 (en) * 2007-11-28 2009-06-03 International Engine Intellectual Property Heating system for chemical used in exhaust purification system
JP2013245652A (en) * 2012-05-29 2013-12-09 Isuzu Motors Ltd Urea water thawing device
CN204978229U (en) * 2015-07-28 2016-01-20 安徽江淮汽车股份有限公司 Aftertreatment assembly structure
CN206346809U (en) * 2016-12-08 2017-07-21 东风康明斯发动机有限公司 The tail gas treatment system of diesel engine that independent control is aided in without air
CN108425726A (en) * 2018-03-28 2018-08-21 吉林大学 A kind of SCR system heating device and its control method
CN207942905U (en) * 2017-12-29 2018-10-09 郑州宇通客车股份有限公司 Vehicle and its heat circulating system
CN209163917U (en) * 2018-11-22 2019-07-26 雷沃重工股份有限公司 A kind of exhaust gas treatment device
CN211924314U (en) * 2020-03-25 2020-11-13 河南柴油机重工有限责任公司 Low-level hanging expansion water tank heat-insulation device
CN211975118U (en) * 2019-12-27 2020-11-20 潍柴动力股份有限公司 Urea case heating structure and diesel vehicle
CN112127977A (en) * 2020-09-28 2020-12-25 安徽江淮汽车集团股份有限公司 Intelligent waste heat management system and automobile
CN112796862A (en) * 2021-04-14 2021-05-14 潍柴动力股份有限公司 Control method and controller for cooling urea nozzle and cooling system

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2065578A1 (en) * 2007-11-28 2009-06-03 International Engine Intellectual Property Heating system for chemical used in exhaust purification system
JP2013245652A (en) * 2012-05-29 2013-12-09 Isuzu Motors Ltd Urea water thawing device
CN204978229U (en) * 2015-07-28 2016-01-20 安徽江淮汽车股份有限公司 Aftertreatment assembly structure
CN206346809U (en) * 2016-12-08 2017-07-21 东风康明斯发动机有限公司 The tail gas treatment system of diesel engine that independent control is aided in without air
CN207942905U (en) * 2017-12-29 2018-10-09 郑州宇通客车股份有限公司 Vehicle and its heat circulating system
CN108425726A (en) * 2018-03-28 2018-08-21 吉林大学 A kind of SCR system heating device and its control method
CN209163917U (en) * 2018-11-22 2019-07-26 雷沃重工股份有限公司 A kind of exhaust gas treatment device
CN211975118U (en) * 2019-12-27 2020-11-20 潍柴动力股份有限公司 Urea case heating structure and diesel vehicle
CN211924314U (en) * 2020-03-25 2020-11-13 河南柴油机重工有限责任公司 Low-level hanging expansion water tank heat-insulation device
CN112127977A (en) * 2020-09-28 2020-12-25 安徽江淮汽车集团股份有限公司 Intelligent waste heat management system and automobile
CN112796862A (en) * 2021-04-14 2021-05-14 潍柴动力股份有限公司 Control method and controller for cooling urea nozzle and cooling system

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114934856A (en) * 2022-06-02 2022-08-23 江苏科技大学 Marine ejector waste heat recovery system
CN114934856B (en) * 2022-06-02 2023-06-23 江苏科技大学 Marine ejector waste heat recovery system

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Application publication date: 20220118