CN112145271A - Integrated heat preservation device for diesel engine exhaust system - Google Patents
Integrated heat preservation device for diesel engine exhaust system Download PDFInfo
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- CN112145271A CN112145271A CN202011071546.8A CN202011071546A CN112145271A CN 112145271 A CN112145271 A CN 112145271A CN 202011071546 A CN202011071546 A CN 202011071546A CN 112145271 A CN112145271 A CN 112145271A
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- pipe
- exhaust system
- exhaust
- heat insulation
- diesel engine
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/009—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/14—Layered products comprising a layer of metal next to a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B15/00—Layered products comprising a layer of metal
- B32B15/18—Layered products comprising a layer of metal comprising iron or steel
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B33/00—Layered products characterised by particular properties or particular surface features, e.g. particular surface coatings; Layered products designed for particular purposes not covered by another single class
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B9/00—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00
- B32B9/04—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B9/041—Layered products comprising a layer of a particular substance not covered by groups B32B11/00 - B32B29/00 comprising such particular substance as the main or only constituent of a layer, which is next to another layer of the same or of a different material of metal
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/14—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00 having thermal insulation
- F01N13/141—Double-walled exhaust pipes or housings
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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
- F01N13/00—Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00 - F01N5/00, F01N9/00, F01N11/00
- F01N13/16—Selection of particular materials
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
- B32B2262/10—Inorganic fibres
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2307/00—Properties of the layers or laminate
- B32B2307/30—Properties of the layers or laminate having particular thermal properties
- B32B2307/304—Insulating
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Exhaust Silencers (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention belongs to the technical field of engine exhaust systems, and particularly relates to an integrated heat preservation device of a diesel engine exhaust system, which comprises an exhaust pipe 1, an oxidation catalyst DOC2, a particulate filter DPF3, a selective catalytic reduction device SCR5 and a tail pipe 6 which are sequentially connected at the rear end of an engine, wherein the particulate filter DPF3 is connected with the selective catalytic reduction device SCR5 by a connecting pipe 4; the outer surfaces of the exhaust pipe 1 to the tail pipe 6 are provided with two layers of heat insulation structures, wherein the first layer is a heat insulation material 7 based on basalt fibers; the second layer is a shell 8 tightly attached to the heat-insulating material, and the shell 8 integrally encapsulates the outer surfaces of the exhaust pipe 1 and the tail pipe 6. The invention can reduce the temperature drop of the exhaust system, improve the internal temperature of the exhaust system, improve the NOx conversion efficiency, prolong the regeneration mileage of the particulate trap DPF3, reduce the volume of the device under the condition of meeting the same emission reduction efficiency, achieve the aim of light weight and effectively reduce the exhaust noise.
Description
Technical Field
The invention belongs to the technical field of engine exhaust systems, and particularly relates to an integrated heat preservation device for an exhaust system of a diesel engine.
Background
The issuance and implementation of the national emission standards provides a serious challenge to the upgrading of engine technology, so that the aftertreatment system becomes a necessary technical measure, and the thermal management of the exhaust system becomes a key ring influencing the aftertreatment device to improve the conversion efficiency of pollutants and prolong the regeneration period. Meanwhile, on the premise of meeting the emission standard, the fuel consumption of the engine is reduced, the weight of the system is reduced, the cost of the system is saved, and the like, so that the problem to be solved urgently in the engine industry is solved.
Exhaust heat management is a measure for raising exhaust temperature for effective operation of an aftertreatment system, and is classified into an engine-side exhaust heat management measure and an aftertreatment-side exhaust heat management measure according to different operating positions. At present, the exhaust temperature can be increased at the engine end through engine control technologies such as an oil injection strategy, air intake and exhaust throttling, supercharger matching and variable valve lift; and the aftertreatment end exhaust heat management measures mainly comprise electric heating, exhaust pipe fuel injection, a particulate trap DPF active regeneration burner, a DOC catalyst coupling arrangement and the like. At present, in order to effectively improve the low exhaust temperature state of the diesel vehicle under the actual running condition and ensure the safe and effective regeneration of the particulate filter DPF when the regeneration is triggered, exhaust heat management control strategies are mainly researched from the aspects of air intake throttling, oil injection strategies, DOC coupling of an oxidation catalyst and the like, and finally the inlet temperature of the particulate filter DPF reaches the target regeneration temperature value.
The exhaust pipe is a main heated part of the engine, and when the temperature of the exhaust pipe is too high, heat energy can be radiated to the periphery, so that parts such as hoses, wire harnesses and the like are accelerated to age, and the service life is shortened. In order to avoid the problem, the outer surface of the exhaust pipe is required to be wrapped with a heat insulating material, according to the emission standards of the fifth country and the sixth country executed by the motor vehicle in the state at present, in an exhaust gas after-treatment system, in order to reach the catalytic temperature of the urea chemical reaction, the temperature entering the SCR box of the selective catalytic reduction device must meet certain temperature requirements, the length of the exhaust pipe between the outlet of the diesel engine supercharger and the after-treatment device influences the temperature in the exhaust pipe, and the catalytic reaction work of the SCR after-treatment device of the selective catalytic reduction device is directly influenced, so that the emission is. Therefore, in order to ensure that the temperature of the exhaust entering the SCR reaches the temperature for catalytic chemical reaction, the outer surface of the exhaust pipe must be covered with a heat insulating material to preserve the heat energy. The heat insulation material mainly comprises the following heat insulation materials:
glass fiber wraps the outer wall of the exhaust pipe as a heat insulation layer, and non-woven fabrics wrap the fixed heat insulation layer as an outer cladding layer. The glass fiber belongs to a medium-low temperature heat-insulating material.
Ceramic fiber wraps the outer wall of the exhaust pipe as a heat insulation layer, and a stainless steel foil plate wraps and fixes the heat insulation layer as an outer layer. Ceramic fiber belongs to a high-temperature heat-insulating material.
The basalt fiber is used as a heat insulation layer to wrap the outer wall of the exhaust pipe, and the aluminum foil corrugated pipe is used as an outer cladding layer to wrap the fixed heat insulation layer. Belongs to a high-temperature heat-insulating material, and has the advantages of thin wrapping thickness, small space and light weight.
Patent 201921210246.6 issued on 8/14/2020 discloses a basalt fiber sleeve with heat preservation performance, which comprises a pipe body and a high-oxygen silicon inner layer positioned on the outer wall of the pipe body, wherein a basalt fiber heat preservation layer is arranged between the high-oxygen silicon inner layer and the pipe body, and the basalt fiber heat preservation layer comprises a PVC foam heat preservation layer, a basalt fiber fireproof layer, a basalt fiber board I, a basalt fiber gridding cloth, a basalt fiber board II and a basalt fiber base layer which are sequentially arranged from top to bottom.
Patent 201920279628.8 issued on 1/10/2020 discloses an exhaust pipe heat-insulating structure, which comprises a heat-insulating casing, a protective pipe, a volcanic knitted heat-insulating layer and an exhaust pipe, can effectively improve the external protective performance of the exhaust pipe and the heat-insulating performance of the external exhaust pipe, has the characteristics of heat insulation, broken stone impact resistance, water resistance and oil resistance, and has the advantages of simple and convenient installation and good heat-insulating effect.
Patent 202010440635.9 issued on 7/17/2020 discloses a general exhaust aftertreatment heat shield which can greatly reduce the cost of aftertreatment molds; the process requirement of the production of the post-treatment assembly is met, the welding is easy, and the production efficiency is improved; the requirement of loading reliability when the hoop is fixed on the heat insulation cover is met; the heat-insulating cover has the advantages that the integral heat-insulating effect of post-treatment is met, and the heat-insulating protection effect is realized on parts around the post-treatment, but the heat-insulating cover is made of metal and has general heat-insulating performance.
201721033629.1 of 6/5/2018 discloses an automobile exhaust purifier, which comprises a cylindrical body, an air inlet pipe, wherein the air inlet pipe is in a bent shape, the inner wall of the air inlet pipe comprises a partition plate, a heat insulation material is filled between the outer wall of the air inlet pipe and the gap of the body, a one-way valve is installed at the outlet of the air inlet pipe, a catalyst is filled behind the one-way valve, a rear silencing chamber is arranged behind the catalyst and consists of a baffle placed obliquely, small holes are formed in the baffle placed obliquely, a water outlet is formed in the bottom of the rear silencing chamber, and the rear silencing chamber is connected with the air outlet. This patent is an exhaust gas purifier of integrated form, does not set up professional heat preservation measure, and is not showing to the promotion effect of aftertreatment system's temperature rise characteristic.
The above patents mainly comprise two forms, one is an exhaust pipe heat preservation device based on basalt fibers, the device only carries out monomer heat preservation on an exhaust pipe, integral heat preservation and integral packaging are not carried out on the whole tail gas aftertreatment, and the heat preservation performance needs to be further improved. The other is a heat shield or a heat insulation device for the tail gas aftertreatment device, the heat insulation material adopted by the device is common, and the heat insulation material is not a special heat insulation device for the tail gas aftertreatment system, so that the heat insulation performance needs to be improved.
Disclosure of Invention
The invention aims to overcome the defects that the heat insulation material in the prior art is poor in heat insulation effect and the heat insulation performance needs to be improved, and provides an integrated heat insulation device for a diesel engine exhaust system.
The technical scheme of the invention is as follows: an integrated heat preservation device of a diesel engine exhaust system comprises an exhaust pipe 1, an oxidation catalyst DOC2, a particulate trap DPF3, a selective catalytic reduction device SCR5 and a tail pipe 6 which are sequentially connected at the rear end of an engine, wherein the particulate trap DPF3 is connected with the selective catalytic reduction device SCR5 through a connecting pipe 4; the outer surfaces of the exhaust pipe 1 to the tail pipe 6 are provided with two layers of heat insulation structures, and the first layer is made of a heat insulation material 7; the second layer is a shell 8 tightly attached to the heat insulation material 7, and the shell 8 integrally encapsulates the outer surfaces of the exhaust pipe 1 and the tail pipe 6.
Preferably, the heat insulation material 7 is basalt fiber, and by utilizing the characteristics of good heat insulation effect, high and low temperature resistance, corrosion resistance, fire prevention, flame retardance and the like of the basalt fiber, the integrated heat insulation device of the diesel engine exhaust system is designed, so that the temperature rise characteristic of tail gas aftertreatment can be effectively improved, the heat radiation is reduced, and the performance of the tail gas aftertreatment is improved.
Preferably, the basalt fiber is tightly arranged on the outer surface of the exhaust pipe 1 to the tail pipe 6 in a winding or sleeving manner.
Preferably, the packaging material of the shell 8 is hollow stainless steel, the shell 8 comprises an inner wall, a vacuum layer and an outer wall, and the vacuum layer is utilized to further improve the heat preservation effect.
Preferably, the basalt fibers are wound at an angle of alpha tilt with seamless butt joint between the tapes.
Preferably, the basalt fibers are sheathed in a woven mesh.
Compared with the prior art, the invention has the following beneficial effects:
(1) the basalt fiber material is adopted as the heat insulation material of the diesel engine tail gas after-treatment system, so that the environment is protected, and the basalt fiber material has high temperature resistance, good heat insulation effect and long service life.
(2) The tail gas pipe and the post-processing device are wound and wrapped by basalt strip-shaped fiber materials, the outer layer of the basalt strip-shaped fiber is integrally packaged by vacuum stainless steel shell materials, the multilayer heat preservation is realized, the performance is better, the vacuum stainless steel shell can also insulate heat, and the damage to peripheral parts caused by heat is avoided.
Drawings
FIG. 1 is a schematic structural diagram of an integrated heat preservation device of a diesel engine exhaust system according to the present invention;
FIG. 2 is a schematic view of the alpha tilt angle of the present invention;
FIG. 3 is comparative test data of temperature drop characteristics of wrapped pipes made of different materials;
FIG. 4 shows comparative test data of thermal insulation properties of materials of different materials.
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 obtained by a person skilled in the art without making any inventive step are within the scope of protection of the present invention.
Referring to fig. 1 and fig. 2, the technical solution of the present invention is: an integrated heat preservation device of a diesel engine exhaust system comprises an exhaust pipe 1, an oxidation catalyst DOC2, a particulate trap DPF3, a selective catalytic reduction device SCR5 and a tail pipe 6 which are sequentially connected at the rear end of an engine, wherein the particulate trap DPF3 is connected with the selective catalytic reduction device SCR5 through a connecting pipe 4; the outer surfaces of the exhaust pipe 1 to the tail pipe 6 are provided with two layers of heat insulation structures, and the first layer is made of a heat insulation material 7; the second layer is a shell 8 tightly attached to the heat insulation material 7, and the shell 8 integrally encapsulates the outer surfaces of the exhaust pipe 1 and the tail pipe 6.
Preferably, the heat insulation material 7 is basalt fiber, and by utilizing the characteristics of good heat insulation effect, high and low temperature resistance, corrosion resistance, fire prevention, flame retardance and the like of the basalt fiber, the integrated heat insulation device of the diesel engine exhaust system is designed, so that the temperature rise characteristic of tail gas aftertreatment can be effectively improved, the heat radiation is reduced, and the performance of the tail gas aftertreatment is improved.
Preferably, the basalt fiber is tightly arranged on the outer surface of the exhaust pipe 1 to the tail pipe 6 in a winding or sleeving manner.
Preferably, the packaging material of the shell 8 is hollow stainless steel, the shell 8 comprises an inner wall, a vacuum layer and an outer wall, and the vacuum layer is utilized to further improve the heat preservation effect.
Preferably, the basalt fibers are wound at an angle of alpha tilt with seamless butt joint between the tapes.
Preferably, the basalt fibers are sheathed in a woven mesh.
The method is simple and easy to operate, and can reduce the temperature drop of the exhaust system, improve the internal temperature of the exhaust system, improve the NOx conversion efficiency, prolong the regeneration mileage of the DPF by only wrapping basalt fibers outside the exhaust system, and realize the reduction of the volume of the device and achieve the aim of light weight under the condition of meeting the same exhaust temperature. In addition, the basalt fiber can also play a role in reducing exhaust noise due to its excellent sound absorption characteristics.
In the traditional heat insulation material, the glass fiber has the defects of brittleness and poor wear resistance. During the operation process, larger dust is generated, and the human body can be influenced by the dust when the dust is inhaled. The ceramic fiber has the defects of poor compression and bending resistance and poor waterproof performance. The process of filling heat insulation materials in the heat insulation double-layer pipe is complex, and the vacuum degree of the vacuum layer is easily reduced due to the sealing problem.
The basalt fiber is mainly woven by silica fiber, has high strength and permanent flame retardance, can resist temperature of over 1000 ℃ in a short term, can be used in a 760 ℃ temperature environment for a long term, has thin wrapping thickness and can realize wrapping with small gaps.
The following comparative data of fig. 3 and 4 show that the basalt fiber is significantly superior to the existing conventional material in temperature drop characteristics and heat preservation performance.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
Although embodiments of the present invention have been described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (6)
1. An integrated heat preservation device of a diesel engine exhaust system comprises an exhaust pipe (1), an oxidation catalyst (DOC) (2), a particulate filter (DPF) (3), a selective catalytic reduction device (SCR) (5) and a tail pipe (6) which are sequentially connected to the rear end of an engine, wherein the particulate filter (DPF) (3) is connected with the selective catalytic reduction device (SCR) (5) through a connecting pipe (4); the method is characterized in that: the outer surfaces of the exhaust pipe (1) and the tail pipe (6) are provided with two layers of heat insulation structures, and the first layer is made of a heat insulation material (7); the second layer is a shell (8) tightly attached to the heat insulation material (7), and the shell (8) integrally encapsulates the exhaust pipe (1) to the outer surface of the tail pipe (6).
2. The integrated heat preservation device of the diesel engine exhaust system according to claim 1, characterized in that: the heat insulation material (7) is basalt fiber.
3. The integrated heat preservation device of the diesel engine exhaust system according to claim 2, characterized in that: the basalt fibers are tightly arranged on the outer surfaces of the exhaust pipe (1) to the tail pipe (6) in a winding or sleeving mode.
4. The integrated heat preservation device of the diesel engine exhaust system according to claim 1, characterized in that: the packaging material of the shell (8) is hollow stainless steel, and the shell (8) comprises an inner wall, a vacuum layer and an outer wall.
5. The integrated heat preservation device of the diesel engine exhaust system according to claim 3, characterized in that: and the basalt fibers are wound in a seamless butt joint mode between belts at an alpha inclination angle.
6. The integrated heat preservation device of the diesel engine exhaust system according to claim 3, characterized in that: the basalt fibers are sleeved in a woven mesh form.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071546.8A CN112145271A (en) | 2020-10-09 | 2020-10-09 | Integrated heat preservation device for diesel engine exhaust system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011071546.8A CN112145271A (en) | 2020-10-09 | 2020-10-09 | Integrated heat preservation device for diesel engine exhaust system |
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| CN112145271A true CN112145271A (en) | 2020-12-29 |
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| CN202011071546.8A Pending CN112145271A (en) | 2020-10-09 | 2020-10-09 | Integrated heat preservation device for diesel engine exhaust system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217151A (en) * | 2021-06-21 | 2021-08-06 | 南昌智能新能源汽车研究院 | Device for improving mixing performance of SDPF urea and control method |
| CN113356989A (en) * | 2021-06-28 | 2021-09-07 | 同济大学 | Automatically-adjustable heat preservation device for diesel engine exhaust system |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419876A (en) * | 1991-09-03 | 1995-05-30 | Usui Kokusai Sangyo Kaisha Limited | Device for the catalytic purification of automotive exhaust gas |
| CN2351561Y (en) * | 1998-09-23 | 1999-12-01 | 江阴市汽车净化器厂 | Vehicle tail-gas catalytic purifier |
| US20050271562A1 (en) * | 1999-01-22 | 2005-12-08 | Biel John P Jr | Vacuum-insulated exhaust treatment devices, such as catalytic converters, with passive controls |
| FR2959275A1 (en) * | 2010-04-22 | 2011-10-28 | Peugeot Citroen Automobiles Sa | Exhaust line for internal combustion engine of e.g. car, has heating element arranged between thermal insulation layer and external periphery of channel, and controlled by control unit based on measurement of temperature at exterior of line |
| CN104302879A (en) * | 2011-10-07 | 2015-01-21 | 田纳科汽车营运公司 | Exhaust treatment device with integral mount |
| CN204511589U (en) * | 2014-12-18 | 2015-07-29 | 同济大学 | A kind of device accelerating stroke-increasing electric automobile tail gas catalyzing unit ignition |
| CN204572125U (en) * | 2015-05-08 | 2015-08-19 | 中国重汽集团济南动力有限公司 | A kind of diesel engine vent gas cleaning system |
| CN105531110A (en) * | 2013-08-26 | 2016-04-27 | 费德罗-莫格尔动力***有限公司 | Wrappable multi-layer heat shield |
| CN106437982A (en) * | 2016-09-22 | 2017-02-22 | 无锡威孚力达催化净化器有限责任公司 | Shaft-inlet and shaft-outlet barrel type aftertreatment assembly |
| CN211116252U (en) * | 2019-11-22 | 2020-07-28 | 宁波科森净化器制造有限公司 | Exhaust manifold for two-stage turbocharger system |
-
2020
- 2020-10-09 CN CN202011071546.8A patent/CN112145271A/en active Pending
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5419876A (en) * | 1991-09-03 | 1995-05-30 | Usui Kokusai Sangyo Kaisha Limited | Device for the catalytic purification of automotive exhaust gas |
| CN2351561Y (en) * | 1998-09-23 | 1999-12-01 | 江阴市汽车净化器厂 | Vehicle tail-gas catalytic purifier |
| US20050271562A1 (en) * | 1999-01-22 | 2005-12-08 | Biel John P Jr | Vacuum-insulated exhaust treatment devices, such as catalytic converters, with passive controls |
| FR2959275A1 (en) * | 2010-04-22 | 2011-10-28 | Peugeot Citroen Automobiles Sa | Exhaust line for internal combustion engine of e.g. car, has heating element arranged between thermal insulation layer and external periphery of channel, and controlled by control unit based on measurement of temperature at exterior of line |
| CN104302879A (en) * | 2011-10-07 | 2015-01-21 | 田纳科汽车营运公司 | Exhaust treatment device with integral mount |
| CN105531110A (en) * | 2013-08-26 | 2016-04-27 | 费德罗-莫格尔动力***有限公司 | Wrappable multi-layer heat shield |
| CN204511589U (en) * | 2014-12-18 | 2015-07-29 | 同济大学 | A kind of device accelerating stroke-increasing electric automobile tail gas catalyzing unit ignition |
| CN204572125U (en) * | 2015-05-08 | 2015-08-19 | 中国重汽集团济南动力有限公司 | A kind of diesel engine vent gas cleaning system |
| CN106437982A (en) * | 2016-09-22 | 2017-02-22 | 无锡威孚力达催化净化器有限责任公司 | Shaft-inlet and shaft-outlet barrel type aftertreatment assembly |
| CN211116252U (en) * | 2019-11-22 | 2020-07-28 | 宁波科森净化器制造有限公司 | Exhaust manifold for two-stage turbocharger system |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113217151A (en) * | 2021-06-21 | 2021-08-06 | 南昌智能新能源汽车研究院 | Device for improving mixing performance of SDPF urea and control method |
| CN113356989A (en) * | 2021-06-28 | 2021-09-07 | 同济大学 | Automatically-adjustable heat preservation device for diesel engine exhaust system |
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Application publication date: 20201229 |
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