CN111946436A - Exhaust aftertreatment subassembly and natural gas engine's system - Google Patents
Exhaust aftertreatment subassembly and natural gas engine's system Download PDFInfo
- Publication number
- CN111946436A CN111946436A CN202010932686.3A CN202010932686A CN111946436A CN 111946436 A CN111946436 A CN 111946436A CN 202010932686 A CN202010932686 A CN 202010932686A CN 111946436 A CN111946436 A CN 111946436A
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- Prior art keywords
- natural gas
- pipeline
- air
- storage device
- heat storage
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- VNWKTOKETHGBQD-UHFFFAOYSA-N methane Chemical compound C VNWKTOKETHGBQD-UHFFFAOYSA-N 0.000 title claims abstract description 210
- 239000003345 natural gas Substances 0.000 title claims abstract description 105
- 239000007789 gas Substances 0.000 claims abstract description 79
- 238000005338 heat storage Methods 0.000 claims abstract description 40
- 239000003054 catalyst Substances 0.000 claims abstract description 22
- 238000002485 combustion reaction Methods 0.000 claims abstract description 8
- 238000011144 upstream manufacturing Methods 0.000 claims description 19
- 238000011084 recovery Methods 0.000 claims description 6
- 239000002918 waste heat Substances 0.000 claims description 6
- 239000000446 fuel Substances 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000005485 electric heating Methods 0.000 claims description 3
- 238000004891 communication Methods 0.000 claims description 2
- 238000000034 method Methods 0.000 claims 2
- 238000006243 chemical reaction Methods 0.000 abstract description 5
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
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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
-
- 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
- F01N3/2033—Periodically heating or cooling catalytic reactors, e.g. at cold starting or overheating using a fuel burner or introducing fuel into exhaust duct
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/30—Arrangements for supply of additional air
- F01N3/306—Preheating additional air
-
- 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
- F01N3/24—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 constructional aspects of converting apparatus
- F01N3/36—Arrangements for supply of additional fuel
-
- 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 by exhaust energy
- F01N5/02—Exhaust or silencing apparatus combined or associated with devices profiting by exhaust energy the devices using heat
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/10—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being a heat accumulator
-
- 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
- F01N2240/00—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being
- F01N2240/16—Combination or association of two or more different exhaust treating devices, or of at least one such device with an auxiliary device, not covered by indexing codes F01N2230/00 or F01N2250/00, one of the devices being an electric heater, i.e. a resistance heater
-
- 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
-
- 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
- Y02T10/40—Engine management systems
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Toxicology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
A tail gas aftertreatment component comprises a tail gas aftertreatment package, a first pipeline, a second pipeline, a heat storage device and a natural gas burner. The first pipeline and/or the second pipeline are/is connected with the input end of the natural gas burner through the heat storage device. The first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air. The invention also relates to a system of a natural gas engine, comprising a natural gas engine and the exhaust gas aftertreatment component. Compared with the prior art, the natural gas and/or air in the first pipeline and/or the second pipeline can be heated by the heat storage device to optimize combustion of the natural gas combustor, so that the temperature of the tail gas flowing through the catalyst carrier is increased in the cold start stage of the engine, and the conversion efficiency of the catalyst carrier is improved.
Description
Technical Field
The invention relates to a tail gas aftertreatment component and a system of a natural gas engine, and belongs to the technical field of engine tail gas aftertreatment.
Background
A natural gas engine is an engine using natural gas as a fuel, and has been widely used in the field of commercial vehicles and the like. Systems for natural gas engines typically include an air intake system and an exhaust aftertreatment system. The exhaust gas aftertreatment system comprises an exhaust gas aftertreatment package, wherein the exhaust gas aftertreatment package comprises a shell and a catalyst carrier packaged in the shell. It is known that the conversion efficiency of the catalyst carrier to the exhaust gas is closely related to the temperature of the exhaust gas. When the engine is in the cold start stage, the temperature of the exhaust gas is low, and the temperature required for the catalyst carrier to work at high conversion efficiency cannot be met.
Disclosure of Invention
The invention aims to provide an exhaust gas aftertreatment component capable of effectively improving the temperature of exhaust gas in a cold start stage and a system of a natural gas engine.
In order to achieve the purpose, the invention adopts the following technical scheme: an exhaust aftertreatment component for treating exhaust gas of a natural gas engine, the exhaust aftertreatment component comprising an exhaust aftertreatment package comprising a housing and a catalyst carrier encapsulated therein; the tail gas aftertreatment component further comprises a first pipeline, a second pipeline and a natural gas burner arranged at the upstream of the tail gas aftertreatment package; the tail gas aftertreatment component also comprises a heat storage device; the first pipeline and/or the second pipeline are/is connected with the input end of the natural gas burner through the heat storage device, wherein the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air; the natural gas burner is used for heating tail gas of the natural gas engine so as to improve the temperature of the tail gas when the tail gas flows through the catalyst carrier.
As a further improved technical solution of the present invention, the heat storage device is a waste heat recovery device or an electric heating device, and the heat storage device is provided with a heat exchanger for transferring heat into the natural gas and/or the air.
As a further improved technical solution of the present invention, a first metering valve is disposed in the first pipeline upstream of the heat storage device to regulate the flow rate of natural gas; and a second metering valve positioned at the upstream of the heat storage device is arranged in the second pipeline so as to regulate the flow of air.
As a further improved technical scheme of the invention, the exhaust gas aftertreatment component is further provided with a controller, and the first metering valve and the second metering valve are both communicated with the controller.
The invention also relates to a system of the natural gas engine, which comprises the natural gas engine, an air inlet system connected with the air inlet end of the natural gas engine and a tail gas aftertreatment system connected with the air outlet end of the natural gas engine; the air intake system includes a turbocharger; the exhaust gas aftertreatment system comprises an exhaust gas aftertreatment package, wherein the exhaust gas aftertreatment package comprises a shell and a catalyst carrier packaged in the shell; the tail gas aftertreatment system further comprises a first pipeline, a second pipeline, a natural gas burner arranged at the upstream of the tail gas aftertreatment package and a heat storage device arranged at the downstream of the tail gas aftertreatment package, wherein the first pipeline and/or the second pipeline are/is connected with the input end of the natural gas burner through the heat storage device, the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air; the natural gas burner is used for heating tail gas of the natural gas engine so as to improve the temperature of the tail gas when the tail gas flows through the catalyst carrier.
As a further improved technical solution of the present invention, the intake system includes an air cleaner connected upstream of the turbocharger, a charge air cooler connected downstream of the turbocharger, and an electronic throttle valve connected downstream of the charge air cooler, and the electronic throttle valve is connected to an intake end of the natural gas engine.
As a further improved technical scheme of the invention, the natural gas introduced into the first pipeline and the natural gas required by the combustion of the natural gas engine come from the same vehicle-mounted fuel storage tank, and the air introduced into the second pipeline is compressed air pressurized by the turbocharger.
As a further improved technical scheme of the invention, the compressed air is high-temperature and high-pressure air led from the charge air cooler.
As a further improved technical solution of the present invention, a first metering valve is disposed in the first pipeline upstream of the heat storage device to regulate the flow rate of natural gas; a second metering valve is arranged in the second pipeline and is positioned at the upstream of the heat storage device so as to regulate the flow of air; the tail gas aftertreatment system is further provided with a controller, and the first metering valve and the second metering valve are communicated with the controller.
As a further improved technical scheme of the invention, the heat storage device is a waste heat recovery device and is used for recovering the heat of the tail gas flowing out of the tail gas aftertreatment package; the heat storage device is provided with a heat exchanger for transferring heat into the natural gas and/or the air.
Compared with the prior art, the system of the tail gas aftertreatment component and the natural gas engine is provided with the natural gas burner arranged at the upstream of the tail gas aftertreatment package, and the first pipeline and/or the second pipeline are connected with the input end of the natural gas burner through the heat storage device, so that natural gas and/or air in the first pipeline and/or the second pipeline can be heated by the heat storage device, and combustion of the natural gas burner is optimized; the natural gas burner is used for heating the tail gas of the natural gas engine, so that the temperature of the tail gas flowing through the catalyst carrier is increased in the cold start stage of the engine, and the conversion efficiency of the catalyst carrier is improved.
Drawings
Fig. 1 is a schematic diagram of the present invention.
Detailed Description
Referring to fig. 1, the present invention discloses a natural gas engine system, which includes a natural gas engine 1, an air intake system 2 connected to an air intake end of the natural gas engine 1, and an exhaust gas aftertreatment system 3 connected to an air outlet end of the natural gas engine 1.
The intake system 2 includes a turbocharger 21, an air cleaner 22 connected upstream of the turbocharger 21, a charge air cooler 22 connected downstream of the turbocharger 21, and an electronic throttle valve 23 connected downstream of the charge air cooler 22. The electronic throttle valve 23 is connected to an intake end of the natural gas engine 1. In the illustrated embodiment of the invention, the intake system 2 further includes a mixer 24 connected between the charge air cooler 22 and the electronic throttle valve 23. The mixer 24 is used to mix the air exiting the charge air cooler 22 with natural gas from an on-board fuel storage tank.
The exhaust gas aftertreatment system 3 includes an exhaust gas aftertreatment package 31, a natural gas burner 32 installed upstream of the exhaust gas aftertreatment package 31, a heat storage device 34 installed downstream of the exhaust gas aftertreatment package 31, and a controller 33 for controlling the exhaust gas aftertreatment package 31. The exhaust gas aftertreatment package 31, the natural gas burner 32 and the heat storage device 34 are collectively referred to as an exhaust gas aftertreatment component. The exhaust gas aftertreatment package 31 includes a housing 311 and a catalyst carrier 312 enclosed in the housing 311. The natural gas burner 32 is used to heat the exhaust gas of the natural gas engine 1 to increase the temperature of the exhaust gas when flowing through the catalyst support 312.
Specifically, the tail gas aftertreatment component further includes a first pipeline 321 and a second pipeline 322, wherein the first pipeline 321 and/or the second pipeline 322 are connected to the input end of the natural gas combustor 32 via the heat storage device 34. Preferably, the first pipeline 321 and the second pipeline 322 are both connected with the input end of the natural gas burner 32 via the heat storage device 34. The first pipeline 321 is used for introducing natural gas, and the second pipeline 322 is used for introducing air. Preferably, the natural gas introduced in the first line 321 comes from the same on-board fuel storage tank as the natural gas required for combustion by the natural gas engine 1. Preferably, the first pipeline 321 introduces natural gas from the rear of a gas thermostat of the natural gas engine 1 and in front of a gas metering valve. The air introduced into the second pipe 322 is compressed air pressurized by the turbocharger 21. With this arrangement, the combustion of the natural gas combustor 32 can be assisted with air downstream of the turbocharger 21, thereby improving combustion efficiency. Preferably, the compressed air is high temperature and high pressure air that is led from the charge air cooler 22. The introduction of the air can reduce the cost of additional air source components, so that the system is simple and practical. The heat storage device 34 is a waste heat recovery device or an electric heating device. Preferably, the heat storage device 34 is a waste heat recovery device for recovering heat of the exhaust gas flowing out of the exhaust gas aftertreatment package 31. Before the natural gas in the first pipeline 321 and/or the air in the second pipeline 322 is combusted in the natural gas combustor 32, the natural gas and/or the air is heated by the heat storage device 34 to increase the temperature of the natural gas and/or the air, so as to optimize the combustion of the natural gas combustor. Preferably, the heat storage device 34 is provided with a heat exchanger, and the heat in the heat storage device 34 is transferred into the natural gas and/or the air by the heat exchanger, so as to heat the natural gas and the air.
Furthermore, a first metering valve 3211 is provided in the first line 321 upstream of the heat storage device 34 in order to regulate the flow of natural gas. A second metering valve 3221 is disposed in the second pipeline 322 upstream of the heat storage device 34 to regulate the flow of air. The first metering valve 3211 and the second metering valve 3221 are both in communication with the controller 33, thereby achieving precise metering control of natural gas and air. After being combusted by the natural gas combustor 32, natural gas and air are introduced into the exhaust pipe to heat the catalyst carrier 312, so that the catalyst carrier 312 is rapidly heated and heated at the cold start stage of the engine, and the catalyst carrier 312 achieves excellent tail gas conversion efficiency.
Compared with the prior art, the tail gas aftertreatment component and the natural gas engine system are high in efficiency and convenient to control, and the body of the natural gas engine 1 does not need to be changed. By providing the natural gas burner 32, the catalyst carrier 312 is heated up rapidly during the cold start phase of the engine, and the requirement of the catalyst carrier 312 on exhaust gas treatment under low temperature conditions is also reduced, thereby reducing the cost.
The above embodiments are only for illustrating the invention and not for limiting the technical solutions described in the invention, and the understanding of the present specification should be based on the technical personnel in the field, and although the present specification has described the invention in detail with reference to the above embodiments, the technical personnel in the field should understand that the technical personnel in the field can still make modifications or equivalent substitutions to the present invention, and all the technical solutions and modifications thereof without departing from the spirit and scope of the present invention should be covered in the claims of the present invention.
Claims (10)
1. An exhaust aftertreatment component for treating exhaust gas of a natural gas engine, the exhaust aftertreatment component comprising an exhaust aftertreatment package comprising a housing and a catalyst carrier encapsulated therein; the method is characterized in that: the tail gas aftertreatment component further comprises a first pipeline, a second pipeline and a natural gas burner arranged at the upstream of the tail gas aftertreatment package; the tail gas aftertreatment component also comprises a heat storage device; the first pipeline and/or the second pipeline are/is connected with the input end of the natural gas burner through the heat storage device, wherein the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air; the natural gas burner is used for heating tail gas of the natural gas engine so as to improve the temperature of the tail gas when the tail gas flows through the catalyst carrier.
2. The exhaust aftertreatment assembly of claim 1, wherein: the heat storage device is a waste heat recovery device or an electric heating device, and the heat storage device is provided with a heat exchanger for transferring heat into the natural gas and/or the air.
3. The exhaust aftertreatment assembly of claim 1, wherein: a first metering valve is arranged in the first pipeline and is positioned at the upstream of the heat storage device so as to regulate the flow of natural gas; and a second metering valve positioned at the upstream of the heat storage device is arranged in the second pipeline so as to regulate the flow of air.
4. The exhaust aftertreatment assembly of claim 3, wherein: the tail gas aftertreatment subassembly still is equipped with the controller, first metering valve with the second metering valve all with the controller communication.
5. A system of a natural gas engine comprises the natural gas engine, an air inlet system connected with an air inlet end of the natural gas engine and a tail gas aftertreatment system connected with an air outlet end of the natural gas engine; the air intake system includes a turbocharger; the exhaust gas aftertreatment system comprises an exhaust gas aftertreatment package, wherein the exhaust gas aftertreatment package comprises a shell and a catalyst carrier packaged in the shell; the method is characterized in that: the tail gas aftertreatment system further comprises a first pipeline, a second pipeline, a natural gas burner arranged at the upstream of the tail gas aftertreatment package and a heat storage device arranged at the downstream of the tail gas aftertreatment package, wherein the first pipeline and/or the second pipeline are/is connected with the input end of the natural gas burner through the heat storage device, the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air; the natural gas burner is used for heating tail gas of the natural gas engine so as to improve the temperature of the tail gas when the tail gas flows through the catalyst carrier.
6. The natural gas engine system of claim 5, wherein: the air intake system comprises an air filter connected to the upstream of the turbocharger, a charge air cooler connected to the downstream of the turbocharger, and an electronic throttle valve connected to the downstream of the charge air cooler, wherein the electronic throttle valve is connected with the air intake end of the natural gas engine.
7. The natural gas engine system of claim 5, wherein: the natural gas introduced into the first pipeline and the natural gas required by combustion of the natural gas engine come from the same vehicle-mounted fuel storage tank, and the air introduced into the second pipeline is compressed air pressurized by the turbocharger.
8. The natural gas engine system of claim 7, wherein: the compressed air is high-temperature and high-pressure air led from the supercharged intercooler.
9. The natural gas engine system of claim 5, wherein: a first metering valve is arranged in the first pipeline and is positioned at the upstream of the heat storage device so as to regulate the flow of natural gas; a second metering valve is arranged in the second pipeline and is positioned at the upstream of the heat storage device so as to regulate the flow of air; the tail gas aftertreatment system is further provided with a controller, and the first metering valve and the second metering valve are communicated with the controller.
10. The natural gas engine system of claim 5, wherein: the heat storage device is a waste heat recovery device and is used for recovering the heat of the tail gas flowing out of the tail gas aftertreatment package; the heat storage device is provided with a heat exchanger for transferring heat into the natural gas and/or the air.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010932686.3A CN111946436A (en) | 2020-09-08 | 2020-09-08 | Exhaust aftertreatment subassembly and natural gas engine's system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010932686.3A CN111946436A (en) | 2020-09-08 | 2020-09-08 | Exhaust aftertreatment subassembly and natural gas engine's system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111946436A true CN111946436A (en) | 2020-11-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010932686.3A Pending CN111946436A (en) | 2020-09-08 | 2020-09-08 | Exhaust aftertreatment subassembly and natural gas engine's system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023000324A1 (en) | 2023-02-03 | 2024-08-08 | Mercedes-Benz Group AG | Burner for an exhaust system of an internal combustion engine, in particular of a motor vehicle, method for operating such a burner and internal combustion engine for a motor vehicle |
-
2020
- 2020-09-08 CN CN202010932686.3A patent/CN111946436A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102023000324A1 (en) | 2023-02-03 | 2024-08-08 | Mercedes-Benz Group AG | Burner for an exhaust system of an internal combustion engine, in particular of a motor vehicle, method for operating such a burner and internal combustion engine for a motor vehicle |
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