CN112127977B - Intelligent waste heat management system and automobile - Google Patents
Intelligent waste heat management system and automobile Download PDFInfo
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- CN112127977B CN112127977B CN202011056931.5A CN202011056931A CN112127977B CN 112127977 B CN112127977 B CN 112127977B CN 202011056931 A CN202011056931 A CN 202011056931A CN 112127977 B CN112127977 B CN 112127977B
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- heat exchange
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- heating liquid
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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
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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
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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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- 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
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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 utility model discloses an intelligent waste heat management system and an automobile, which comprise a tail pipe, a urea box, a heating device and a heat exchange structure, wherein the urea box is used for spraying urea into the tail pipe; the heat exchange structure is arranged on the tail pipe and positioned on the auxiliary heating liquid flow path, and is used for enabling the heat exchange liquid on the auxiliary heating liquid flow path to absorb the heat of the tail pipe; and the heat exchange liquid on the auxiliary heating liquid flow path exchanges heat from the heat exchange structure and then flows through the heat exchange piece so as to heat the urea box. The heat in the tail gas is collected to heat the heat exchange liquid, so that the urea can be efficiently unfrozen, the use in a low-temperature environment is facilitated, and meanwhile, the waste heat of the automobile tail gas is utilized, so that the energy is saved and the environment is protected.
Description
Technical Field
The utility model relates to the technical field of engine tail gas aftertreatment, in particular to an intelligent waste heat management system.
Background
In winter, when the temperature is low, urea can freeze, so that the urea cannot be sprayed in the after-treatment process, and the emission is influenced. A typical automotive aftertreatment will have a urea heating system. The urea heating system takes hot water from a warm air inlet and outlet of the engine and circulates the hot water back to the engine from a warm air recovery port so as to heat the urea system in an environment with lower temperature in winter. The existing urea heating system needs the engine to be started for a period of time, the urea can be unfrozen after the water temperature reaches a certain temperature, and the urea box can not work within a period of time when the automobile is just driven.
Disclosure of Invention
The utility model mainly aims to provide an intelligent waste heat management system and an automobile, and aims to provide a system for efficiently heating urea, which is beneficial to use in a low-temperature environment.
To achieve the above object, the present invention provides an intelligent waste heat management system, including:
a tail pipe;
the urea box is used for spraying urea into the exhaust tail pipe;
the heating device is internally provided with a heating liquid flow path, the heating liquid flow path comprises an auxiliary heating liquid flow path, and a heat exchange piece is arranged on the auxiliary heating liquid flow path and used for heating the urea box; and the number of the first and second groups,
the heat exchange structure is arranged on the tail pipe, is positioned on the auxiliary heating liquid flow path and is used for enabling the heat exchange liquid on the auxiliary heating liquid flow path to absorb the heat of the tail pipe;
and the heat exchange liquid on the auxiliary heating liquid flow path exchanges heat from the heat exchange structure and then flows through the heat exchange piece so as to heat the urea box.
Optionally, the heating liquid flow path further includes a main heating liquid flow path, the main heating liquid flow path and the auxiliary heating liquid flow path are arranged in parallel, so that the heat exchanger is also located on the main heating liquid flow path, and the main heating liquid flow path is used for guiding the heat exchange liquid of the warm air system of the automobile to the heat exchanger, so as to heat the urea tank.
Optionally, the intelligent waste heat management system further includes two main heating liquid pipes, one end of each of the two main heating liquid pipes is respectively used for communicating with a warm air water outlet and a warm air water return port of a warm air system of the automobile, and the other end of each of the two main heating liquid pipes is respectively correspondingly communicated with the auxiliary heating liquid flow path on the flow path sections on the two sides of the heat exchange member;
the heat exchange liquid in one of the main heating liquid pipes flows through the heat exchange piece and flows back to the warm air water return opening along the other main heating liquid pipe to form the main heating liquid flow path.
Optionally, the intelligent waste heat management system further includes two auxiliary heating liquid pipes, and one ends of the two auxiliary heating liquid pipes are communicated with the heat exchange member;
the heat exchange structure comprises a heat collecting pipe, the middle part of the heat collecting pipe is positioned in the exhaust tail pipe, and two ends of the heat collecting pipe extend out of the exhaust tail pipe and are communicated with the other ends of the two auxiliary heating liquid pipes;
after the heat exchange liquid in one of the auxiliary heating liquid pipes is heated by the heat collection pipe, the heat exchange liquid flows back to the heat exchange piece along the other auxiliary heating liquid pipe to form the auxiliary heating liquid flow path.
Optionally, the heat exchange structure further comprises a mounting seat fixedly mounted in the tail pipe, and the mounting seat is provided with a mounting hole communicated with the inner cavity of the tail pipe;
the middle part of the heat collecting pipe is provided with a plurality of heat collecting pipe sections which are sequentially arranged along the radial direction of the tail pipe, and the plurality of heat collecting pipe sections are arranged in the mounting hole.
Optionally, a plurality of fins are arranged on the outer surface of a plurality of heat collecting pipe sections.
Optionally, the intelligent waste heat management system further comprises two main heating liquid pipes;
a first electromagnetic valve is arranged on the main heating liquid pipe, and a second electromagnetic valve is arranged on the auxiliary heating liquid pipe;
the intelligent waste heat management system further comprises a control assembly comprising a controller electrically connected to the first solenoid valve and the second solenoid valve.
Optionally, an ambient temperature sensor and/or a liquid temperature sensor are arranged on the second electromagnetic valve, and the ambient temperature sensor and/or the liquid temperature sensor are electrically connected with the controller.
Alternatively to this, the first and second parts may,
and a water pump is arranged on the auxiliary heating liquid flow path and is electrically connected with the controller.
The utility model further provides an automobile comprising the intelligent waste heat management system, wherein the intelligent waste heat management system comprises:
a tail pipe;
the urea box is used for spraying urea into the exhaust tail pipe;
the heating device is internally provided with a heating liquid flow path, the heating liquid flow path comprises an auxiliary heating liquid flow path, and a heat exchange piece is arranged on the auxiliary heating liquid flow path and used for heating the urea box; and the number of the first and second groups,
the heat exchange structure is arranged on the tail pipe, is positioned on the auxiliary heating liquid flow path and is used for enabling the heat exchange liquid on the auxiliary heating liquid flow path to absorb the heat of the tail pipe;
and the heat exchange liquid on the auxiliary heating liquid flow path exchanges heat from the heat exchange structure and then flows through the heat exchange piece so as to heat the urea box.
According to the technical scheme, after the automobile is started, the tail pipe begins to discharge tail gas, heat in the tail gas is collected through the heat exchange structure located in the tail pipe to heat a section of the auxiliary heating liquid flow path located at the heat exchange structure, heated heat exchange liquid flows through the heat exchange piece, the heat exchange piece transfers the heat of the heat exchange liquid to the urea box, so that the urea in the urea box is heated and thawed, the urea box begins to work to spray the urea into the tail pipe, harmful nitrogen oxides in the tail gas are reduced into nitrogen and water, the urea can be thawed efficiently, the use in a low-temperature environment is facilitated, meanwhile, the waste heat of the tail gas of the automobile is utilized, and the energy is saved and the environment is protected.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic perspective view of an embodiment of an intelligent waste heat management system provided by the present invention;
FIG. 2 is a schematic view of the auxiliary heating fluid flow path of FIG. 1;
FIG. 3 is a schematic perspective view of the heat exchange structure of FIG. 1;
fig. 4 is an electrical schematic diagram of the control assembly of fig. 1.
The reference numbers illustrate:
| reference numerals | Name (R) | Reference numerals | Name (R) |
| 100 | Intelligent waste |
4 | |
| 1 | |
41 | Heat collecting pipe |
| 2 | Urea |
411 | Heat |
| 3a | Auxiliary heating |
42 | |
| 3b | Main heating liquid flow path | 5 | First |
| 31 | Main heating |
6 | Second |
| 32 | Auxiliary heating |
7 | Water pump |
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that, if directional indication is involved in the embodiment of the present invention, the directional indication is only used for explaining the relative positional relationship, the motion situation, and the like between the components in a certain posture, and if the certain posture is changed, the directional indication is changed accordingly.
In addition, if there is a description of "first", "second", etc. in an embodiment of the present invention, the description of "first", "second", etc. is for descriptive purposes only and is not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
In winter, when the temperature is low, urea can freeze, so that the urea cannot be sprayed in the after-treatment process, and the emission is influenced. A typical automotive aftertreatment will have a urea heating system. The urea heating system takes hot water from a warm air inlet and outlet of the engine and circulates the hot water back to the engine from a warm air recovery port so as to heat the urea system in an environment with lower temperature in winter. The existing urea heating system needs the engine to be started for a period of time, the urea can be unfrozen after the water temperature reaches a certain temperature, and the urea box can not work within a period of time when the automobile is just driven.
The utility model provides an intelligent waste heat management system, which utilizes tail gas to heat, provides a system for efficiently heating urea and is beneficial to use in a low-temperature environment. Fig. 1 to 4 show an embodiment of an intelligent waste heat management system according to the present invention.
Referring to fig. 1 to 2, an intelligent waste heat management system 100 includes a tail pipe 1, a urea tank 2, a heating device and a heat exchange structure 4, where the urea tank 2 is used to spray urea into the tail pipe 1, a heating liquid flow path is formed in the heating device, the heating liquid flow path includes an auxiliary heating liquid flow path 3a, and a heat exchange member is arranged on the auxiliary heating liquid flow path 3a to heat the urea tank 2; the heat exchange structure 4 is arranged on the tail pipe 1, is positioned on the auxiliary heating liquid flow passage 3a, and is used for enabling the heat exchange liquid on the auxiliary heating liquid flow passage 3a to absorb the heat of the tail pipe 1; the heat exchange liquid on the auxiliary heating liquid flow path 3a exchanges heat from the heat exchange structure 4 and then flows through the heat exchange member to heat the urea tank 2.
In the technical scheme of the utility model, after an automobile is started, the tail pipe 1 starts to discharge tail gas, heat in the tail gas is collected through the heat exchange structure 4 positioned in the tail pipe 1 to heat a section of the auxiliary heating liquid flow path 3a at the heat exchange structure 4, heated heat exchange liquid flows through the heat exchange piece, and the heat exchange piece transfers the heat of the heat exchange liquid to the urea tank 2, so that the urea in the urea tank 2 is heated and thawed, the urea tank 2 starts to work to spray the urea into the tail pipe 1, and harmful nitrogen oxides in the tail gas are reduced into nitrogen and water, therefore, the urea can be thawed efficiently, the use in a low-temperature environment is facilitated, and meanwhile, the waste heat of the tail gas of the automobile is utilized, so that the energy is saved and the environment is protected.
Further, the heating liquid flow path further includes a main heating liquid flow path 3b, the main heating liquid flow path 3b is provided in parallel with the auxiliary heating liquid flow path 3a so that the heat exchanger is also located in the main heating liquid flow path 3b, and the main heating liquid flow path 3b is used for introducing a heat exchange liquid of a warm air system of the automobile to the heat exchanger to heat the urea tank 2. In the utility model, the urea tank 2 can be heated through the auxiliary heating liquid flow path 3a or the main heating liquid flow path 3b respectively, compared with the existing urea heating mode, the heating is not provided by a warm air system independently, and the problem that the heating water temperature is influenced and the warm air heating effect is influenced due to the fact that the urea tank 2 needs more heat at the initial starting stage of an automobile is avoided; so set up, two parallelly connected flow paths can be selected according to the environmental requirement, and the two does not influence each other, all can realize alone that the heating unfreezes urea.
Specifically, the intelligent waste heat management system 100 further includes two main heating liquid pipes 31, one end of each of the two main heating liquid pipes 31 is respectively used for communicating with a warm air water outlet and a warm air water return port of a warm air system of the automobile, and the other end of each of the two main heating liquid pipes 31 is respectively correspondingly communicated with the auxiliary heating liquid flow path 3a on the flow path sections on both sides of the heat exchange member; the heat exchange liquid flows into one of the main heating liquid pipes 31 from the warm air water outlet, and after the heat exchange member, the heat exchange liquid flows back to the warm air water return port along the other main heating liquid pipe 31 to form the main heating liquid flow path 3b so as to heat the urea tank 2.
In order to realize the heat exchange function of the heat exchange structure 4, in the present invention, please refer to fig. 3, the intelligent waste heat management system 100 further includes two auxiliary heating liquid pipes 32, and one end of each of the two auxiliary heating liquid pipes 32 is communicated with the heat exchange member; the heat exchange structure 4 comprises a heat collecting pipe 41, the middle part of the heat collecting pipe 41 is positioned in the tail pipe 1, and two ends of the heat collecting pipe 41 extend out of the tail pipe 1 and are communicated with the other ends of the two auxiliary heating liquid pipes 32; the heat exchange liquid starts from the urea tank 2, one of the auxiliary heating liquid pipes 32 flows into the heat collection pipe 41, the heat collection pipe 41 collects heat in the tail gas to heat the heat exchange liquid in the heat collection pipe 41, and then flows back to the heat exchange member along the other auxiliary heating liquid pipe 32 to form the auxiliary heating liquid flow path 3 a. The heating of urea through the tail gas is realized.
In order to improve the heat exchange efficiency, the heat exchange structure 4 further comprises a mounting seat 42 fixedly mounted in the tail pipe 1, and a mounting hole communicated with the inner cavity of the tail pipe 1 is formed in the mounting seat 42; a plurality of heat collecting pipe sections 411 sequentially arranged along the radial direction of the tail pipe 1 are formed in the middle of the heat collecting pipe 41, and the plurality of heat collecting pipe sections 411 are arranged in the mounting hole. According to the utility model, the heat collecting pipe sections 411 are arranged in the tail pipe 1, so that high-temperature tail gas passes through gaps among the heat collecting pipe sections 411 and fully exchanges heat with heat exchange liquid in the heat collecting pipe sections 411, and the temperature of the heat exchange liquid is increased. In order to fully utilize the space inside the tail pipe 1, the flow fields of the heat exchange liquid inside the heat collecting pipe sections 411 adopt zigzag flow directions, so as to improve the heat exchange efficiency.
In this embodiment, the heat collecting tube 41 is a flat tube made of aluminum, the aluminum tube has good heat conducting performance, and the width of the flat tube is increased to meet the requirement.
Further, a plurality of fins are provided on the outer surface of the heat collecting pipe sections 411. The fins are metal sheets with strong heat conductivity which are added on the surface of the heat exchange device needing heat transfer, so that the heat exchange surface area of the heat exchange device is increased. So set up and promote heat exchange efficiency.
In order to facilitate switching control between the two flow paths, in the present embodiment, the main heating liquid pipe 31 is provided with a first electromagnetic valve 5, and the auxiliary heating liquid pipe 32 is provided with a second electromagnetic valve 6; the intelligent waste heat management system 100 also includes a control assembly including a controller electrically connected to the first solenoid valve 5 and the second solenoid valve 6. The control assembly is introduced, so that the corresponding flow path can be changed in time according to actual conditions, and the convenience is high.
Specifically, an environment temperature sensor and/or a liquid temperature sensor are arranged on the second electromagnetic valve 6, and the environment temperature sensor and/or the liquid temperature sensor are electrically connected with the controller. In this embodiment, the second electromagnetic valve 6 is disposed on the flow path around the urea tank 2, and the second electromagnetic valve 6 is simultaneously provided with an ambient temperature sensor and a liquid temperature sensor for respectively detecting the ambient temperature and the temperature of the heat exchange liquid.
The auxiliary heating liquid flow path 3a is provided with a water pump 7, and the water pump 7 is electrically connected with the controller. So as to ensure that the heat exchange liquid in the flow path can be quickly circulated.
The heat exchange liquid is cooling liquid in the vehicle, the heat exchange piece is a heating pipe communicated with the urea box, a cooling liquid electromagnetic valve is arranged on the heating pipe, heat exchange is realized by controlling the cooling liquid to enter and exit the urea box, and the heat exchange piece is the existing vehicle structure and is not described in detail herein.
Specifically, referring to fig. 4, when the ambient temperature sensor detects that the ambient temperature is close to the freezing point of urea, and the urea may be frozen, the controller sends a control signal to turn on the second electromagnetic valve 6, and meanwhile, the corresponding relay transmits electricity to the water pump 7, so that the cooling liquid enters the heat collecting pipe 41 in the exhaust tail pipe 1 through the auxiliary heating liquid pipe 32, and the heated freezing liquid returns to the urea tank 2, and the urea is heated through the heat exchange member. The water pump 7 provides kinetic energy to the circulation. A liquid temperature sensor is arranged at the second electromagnetic valve 6 at the same time, and when the liquid temperature is detected to be higher than the water temperature of the engine by 3 ℃, the controller sends out a control signal to open the first electromagnetic valve 5 leading to the warm air water circulation; when the liquid temperature is detected to be lower than the water temperature of the engine by 3 ℃, the first electromagnetic valve 5 leading to the warm air water circulation is closed. When the temperature difference is less than 3 ℃, the first electromagnetic valve 5 maintains the last state, so as to prevent the first electromagnetic valve 5 from frequently acting and prolong the service life.
The intelligent waste heat management system 100 does not take water from the engine under the condition that the water temperature of the engine is good, so that the water temperature of hot air water circulation in winter is not influenced, and the hot air temperature is ensured; when the engine water temperature is poor in performance, the controller switches on the main heating liquid flow path 3b connected to the warm air system to supply the warm air water temperature. The thermal energy can be effectively utilized and managed.
The present invention further provides an automobile, which includes the above-mentioned intelligent waste heat management system 100, and the automobile includes all the technical features of the above-mentioned intelligent waste heat management system 100, so that the automobile also has the technical effects brought by all the technical features, and details are not repeated herein.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (8)
1. An intelligent waste heat management system for an automobile comprises a tail pipe, a urea tank, a heating device and a heat exchange structure, wherein the urea tank is used for spraying urea into the tail pipe, a heating liquid flow path is formed in the heating device, the heating liquid flow path comprises an auxiliary heating liquid flow path, a heat exchange piece is arranged on the auxiliary heating liquid flow path and used for heating the urea tank, the heat exchange structure is arranged on the tail pipe and positioned on the auxiliary heating liquid flow path and used for enabling heat exchange liquid on the auxiliary heating liquid flow path to absorb heat of the tail pipe, the heat exchange liquid on the auxiliary heating liquid flow path flows through the heat exchange piece after heat exchange by the heat exchange structure so as to heat the urea tank, and the intelligent waste heat management system is characterized in that the heating liquid flow path also comprises a main heating liquid flow path, the main heating liquid flow path and the auxiliary heating liquid flow path are arranged in parallel, so that the heat exchange member is also positioned on the main heating liquid flow path, and the main heating liquid flow path is used for guiding heat exchange liquid of a warm air system of the automobile to the heat exchange member so as to heat the urea tank;
the intelligent waste heat management system further comprises two main heating liquid pipes;
a first electromagnetic valve is arranged on the main heating liquid pipe, and a second electromagnetic valve is arranged on the auxiliary heating liquid pipe;
the intelligent waste heat management system further comprises a control assembly, wherein the control assembly comprises a controller, and the controller is electrically connected with the first solenoid valve and the second solenoid valve;
when the ambient temperature is close to the freezing point of urea, the controller sends a control signal to open the second electromagnetic valve, when the temperature of the heat exchange liquid in the auxiliary heating liquid flow path is detected to be higher than the water temperature of the engine by 3 ℃, the first electromagnetic valve leading to the warm air water circulation is opened, when the temperature of the heat exchange liquid is detected to be lower than the water temperature of the engine by 3 ℃, the first electromagnetic valve leading to the warm air water circulation is closed, and when the temperature difference is lower than 3 ℃, the first electromagnetic valve maintains the previous state.
2. The intelligent waste heat management system of claim 1, wherein one end of each of the two main heating liquid pipes is used for being communicated with a warm air outlet and a warm air return inlet of a warm air system of the automobile, and the other end of each of the two main heating liquid pipes is correspondingly communicated with a flow path section of the auxiliary heating liquid flow path on two sides of the heat exchange member;
the heat exchange liquid in one of the main heating liquid pipes flows through the heat exchange piece and flows back to the warm air water return opening along the other main heating liquid pipe to form the main heating liquid flow path.
3. The intelligent waste heat management system of claim 1, wherein the heat exchange structure comprises a heat collecting tube, the middle of the heat collecting tube is located in the tail pipe, and two ends of the heat collecting tube extend out of the tail pipe and are communicated with the other ends of the two auxiliary heating liquid tubes;
after the heat exchange liquid in one of the auxiliary heating liquid pipes is heated by the heat collection pipe, the heat exchange liquid flows back to the heat exchange piece along the other auxiliary heating liquid pipe to form the auxiliary heating liquid flow path.
4. The intelligent waste heat management system of claim 3, wherein the heat exchange structure further comprises a mounting seat fixedly mounted in the tail pipe, and the mounting seat is provided with a mounting hole communicated with the inner cavity of the tail pipe;
the middle part of the heat collecting pipe is provided with a plurality of heat collecting pipe sections which are sequentially arranged along the radial direction of the tail pipe, and the plurality of heat collecting pipe sections are arranged in the mounting hole.
5. The intelligent waste heat management system of claim 4, wherein an outer surface of a plurality of the heat collection tube segments is provided with a plurality of fins.
6. The intelligent waste heat management system of claim 1, wherein the second solenoid valve is provided with an ambient temperature sensor and/or a liquid temperature sensor, and the ambient temperature sensor and/or the liquid temperature sensor is electrically connected to the controller.
7. The intelligent waste heat management system of claim 1, wherein a water pump is disposed on the auxiliary heating fluid flow path, the water pump being electrically connected to the controller.
8. An automobile, characterized by comprising the intelligent waste heat management system of any one of claims 1 to 7.
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| CN202011056931.5A CN112127977B (en) | 2020-09-28 | 2020-09-28 | Intelligent waste heat management system and automobile |
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| CN202011056931.5A CN112127977B (en) | 2020-09-28 | 2020-09-28 | Intelligent waste heat management system and automobile |
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| CN112127977B true CN112127977B (en) | 2022-02-25 |
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| CN113944534A (en) * | 2021-10-28 | 2022-01-18 | 安徽江淮汽车集团股份有限公司 | Device for heating urea system by utilizing post-treatment heat |
| CN114562357A (en) * | 2022-02-28 | 2022-05-31 | 东风汽车股份有限公司 | Exhaust system of hazardous chemical transport vehicle |
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