CN111852626A - Exhaust aftertreatment subassembly and natural gas engine's system - Google Patents
Exhaust aftertreatment subassembly and natural gas engine's system Download PDFInfo
- Publication number
- CN111852626A CN111852626A CN202010836063.6A CN202010836063A CN111852626A CN 111852626 A CN111852626 A CN 111852626A CN 202010836063 A CN202010836063 A CN 202010836063A CN 111852626 A CN111852626 A CN 111852626A
- Authority
- CN
- China
- Prior art keywords
- natural gas
- pipeline
- aftertreatment
- temperature sensor
- air
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Images
Classifications
-
- 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
- F01N3/34—Arrangements for supply of additional air using air conduits or jet air pumps, e.g. near the engine exhaust port
-
- 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
- F01N9/00—Electrical control of exhaust gas treating apparatus
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/10—Air intakes; Induction systems
- F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
-
- 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
- F01N2240/14—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 fuel burner
-
- 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
An exhaust aftertreatment component for treating exhaust gas of a natural gas engine includes an exhaust aftertreatment package. The exhaust aftertreatment package includes a housing and a catalyst carrier encapsulated in the housing. The exhaust aftertreatment assembly further includes a natural gas burner mounted upstream of the exhaust aftertreatment package. 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. 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 tail gas of the natural gas engine is heated by arranging the natural gas burner, so that the catalyst carrier can be rapidly heated and heated in the cold starting stage of the engine, and the tail gas conversion efficiency 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 subassembly is still including installing the natural gas burner in the upper reaches of tail gas aftertreatment encapsulation, the natural gas burner is used for heating the tail gas of natural gas engine to improve and flow through when the catalyst carrier the temperature of tail gas.
As a further improved technical solution of the present invention, the tail gas aftertreatment component includes a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are both connected to an input end of the natural gas burner, the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air.
As a further improved technical scheme of the invention, a first metering valve is arranged in the first pipeline to regulate the flow of the natural gas; and a second metering valve is arranged in the second pipeline 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 natural gas burner mounted on the upstream of the tail gas aftertreatment package, wherein the natural gas burner is used for heating the 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 solution of the present invention, the tail gas aftertreatment system includes a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are both connected to an input end of the natural gas burner, the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air.
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 scheme of the invention, a first metering valve is arranged in the first pipeline to regulate the flow of the natural gas; a second metering valve is arranged in the second pipeline 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 solution of the present invention, the exhaust gas aftertreatment system is further provided with a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the first temperature sensor is located downstream of the turbocharger, the second temperature sensor is located upstream of the natural gas burner, the third temperature sensor is located between the natural gas burner and the catalyst carrier, the fourth temperature sensor is located downstream of the catalyst carrier, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor are all in communication with the controller.
Compared with the prior art, the tail gas aftertreatment component and the natural gas engine system are provided with the natural gas burner which is arranged at the upstream of the tail gas aftertreatment package and 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, and a controller 33 to control the exhaust gas aftertreatment package 31. The tail gas aftertreatment package 31 and the natural gas burner 32 are collectively referred to as a tail 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 system 3 includes a first pipeline 321 and a second pipeline 322, wherein the first pipeline 321 and the second pipeline 322 are both connected to an input end of the natural gas burner 32. 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.
In addition, a first metering valve 3211 is provided in the first pipeline 321 to regulate the flow rate of natural gas; a second metering valve 3221 is disposed in the second pipeline 322 to regulate the flow of air. The first metering valve 3211 and the second metering valve 3221 are each in communication with the controller 33. 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.
The exhaust gas aftertreatment system 3 is further provided with a first temperature sensor 331, a second temperature sensor 332, a third temperature sensor 333, and a fourth temperature sensor 334, wherein the first temperature sensor 331 is located downstream of the turbocharger 21, the second temperature sensor 332 is located upstream of the natural gas burner 32, the third temperature sensor 333 is located between the natural gas burner 32 and the catalyst carrier 312, the fourth temperature sensor 334 is located downstream of the catalyst carrier 312, and the first temperature sensor 331, the second temperature sensor 332, the third temperature sensor 333, and the fourth temperature sensor 334 are all in communication with the controller 33. Therein, a first temperature sensor 331 located upstream of the charge air cooler 22 sends a signal to the controller 33 for causing the controller 33 to control the first metering valve 3211 for accurate metering control of air. In addition, the second temperature sensor 332, the third temperature sensor 333 and the fourth temperature sensor 334 send signals to the controller 33, and the controller 33 controls whether the natural gas burner 32 is started or stopped, when the natural gas burner is started or stopped, and controls the supply amount of the natural gas to accurately control the combustion temperature.
Compared with the prior art, the tail gas aftertreatment component and the natural gas engine system are low in cost, 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 (11)
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 subassembly is still including installing the natural gas burner in the upper reaches of tail gas aftertreatment encapsulation, the natural gas burner is used for heating the tail gas of natural gas engine to improve and flow through when the catalyst carrier the temperature of tail gas.
2. The exhaust aftertreatment assembly of claim 1, wherein: the tail gas aftertreatment subassembly includes first pipeline and second pipeline, wherein first pipeline with the second pipeline all with the input of natural gas combustor links to each other, first pipeline is used for introducing the natural gas, the second pipeline is used for introducing the air.
3. The exhaust aftertreatment assembly of claim 2, wherein: a first metering valve is arranged in the first pipeline to regulate the flow of the natural gas; and a second metering valve is arranged in the second pipeline 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 natural gas burner mounted on the upstream of the tail gas aftertreatment package, wherein the natural gas burner is used for heating the 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 6, wherein: the tail gas aftertreatment system comprises a first pipeline and a second pipeline, wherein the first pipeline and the second pipeline are connected with the input end of the natural gas combustor, the first pipeline is used for introducing natural gas, and the second pipeline is used for introducing air.
8. The natural gas engine system of claim 7, 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.
9. The natural gas engine system of claim 7, wherein: the compressed air is high-temperature and high-pressure air led from the supercharged intercooler.
10. The natural gas engine system of claim 7, wherein: a first metering valve is arranged in the first pipeline to regulate the flow of the natural gas; a second metering valve is arranged in the second pipeline 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.
11. The natural gas engine system of claim 10, wherein: the exhaust gas aftertreatment system is further provided with a first temperature sensor, a second temperature sensor, a third temperature sensor and a fourth temperature sensor, wherein the first temperature sensor is located at the downstream of the turbocharger, the second temperature sensor is located at the upstream of the natural gas combustor, the third temperature sensor is located at the natural gas combustor and between catalyst carriers, the fourth temperature sensor is located at the downstream of the catalyst carriers, and the first temperature sensor, the second temperature sensor, the third temperature sensor and the fourth temperature sensor are communicated with the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010836063.6A CN111852626A (en) | 2020-08-19 | 2020-08-19 | Exhaust aftertreatment subassembly and natural gas engine's system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010836063.6A CN111852626A (en) | 2020-08-19 | 2020-08-19 | Exhaust aftertreatment subassembly and natural gas engine's system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111852626A true CN111852626A (en) | 2020-10-30 |
Family
ID=72969289
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010836063.6A Pending CN111852626A (en) | 2020-08-19 | 2020-08-19 | Exhaust aftertreatment subassembly and natural gas engine's system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111852626A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664303A (en) * | 2020-12-25 | 2021-04-16 | 潍柴动力股份有限公司 | Engine aftertreatment protection method, device, equipment and storage medium |
| CN114644101A (en) * | 2022-03-01 | 2022-06-21 | 武汉理工大学 | Ship gas-electric hybrid power system with electrolytic cell |
-
2020
- 2020-08-19 CN CN202010836063.6A patent/CN111852626A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112664303A (en) * | 2020-12-25 | 2021-04-16 | 潍柴动力股份有限公司 | Engine aftertreatment protection method, device, equipment and storage medium |
| CN114644101A (en) * | 2022-03-01 | 2022-06-21 | 武汉理工大学 | Ship gas-electric hybrid power system with electrolytic cell |
| CN114644101B (en) * | 2022-03-01 | 2023-08-08 | 武汉理工大学 | Ship gas-electricity hybrid power system with electrolytic tank |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101578438B (en) | Secondary air system for a combustion engine breathing system | |
| US11143075B2 (en) | Exhaust gas aftertreatment system and method for exhaust gas aftertreatment in an internal combustion engine | |
| US7980061B2 (en) | Charged air bypass for aftertreatment combustion air supply | |
| CN104487668B (en) | Close-coupled exhaust-gas treatment system and the method for operating the system | |
| EP1929143B1 (en) | Method for internal combustion engine with exhaust recirculation | |
| CN212563398U (en) | Exhaust aftertreatment subassembly and natural gas engine's system | |
| CN101553648A (en) | Large supercharged diesel engine with scr reactor | |
| WO2009142989A2 (en) | Exhaust driven auxiliary air pump and products and methods of using the same | |
| CN101725437A (en) | Explosive motor with turbocharging and low pressure exhaust recirculation | |
| CN111852626A (en) | Exhaust aftertreatment subassembly and natural gas engine's system | |
| US20130061579A1 (en) | Exhaust Gas Aftertreatment System For Engines Equipped With Exhaust Gas Recirculation | |
| CN205154382U (en) | Diesel engine controlling means that admits air | |
| CN204493018U (en) | A kind of gas recirculation system and automobile | |
| US20100064667A1 (en) | Apparatus and method for exhaust gas posttreatment | |
| US20130227934A1 (en) | Aftertreatment burner air supply system | |
| CN209783916U (en) | Single-cylinder diesel engine bench test system based on integral cylinder cover multi-cylinder diesel engine | |
| KR101071873B1 (en) | Recirculating exhaust gas system using vortex tube | |
| CN212563412U (en) | Exhaust aftertreatment subassembly and natural gas engine's system | |
| KR101071874B1 (en) | Engine system using vortex tube | |
| CN115750043A (en) | Vehicle-mounted ammonia cracking hydrogen production system for ammonia fuel compression ignition internal combustion engine and control method | |
| CN215890140U (en) | Post-processing system for meeting ultralow emission of heavy-duty vehicle | |
| CN105863792A (en) | Turbocharged combustion engine with an externally ignited combustion motor and method for operating such a combustion engine | |
| CN111946436A (en) | Exhaust aftertreatment subassembly and natural gas engine's system | |
| CN115217589A (en) | Temperature compensation system and method for SCR system of marine ammonia engine | |
| CN110873012A (en) | Methanol diesel engine injection method and methanol diesel engine injection system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |