CN111412039B - Diesel engine discrete DPF thermal management regeneration device for service station - Google Patents
Diesel engine discrete DPF thermal management regeneration device for service station Download PDFInfo
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- CN111412039B CN111412039B CN202010241188.4A CN202010241188A CN111412039B CN 111412039 B CN111412039 B CN 111412039B CN 202010241188 A CN202010241188 A CN 202010241188A CN 111412039 B CN111412039 B CN 111412039B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N3/00—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust
- F01N3/02—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust
- F01N3/021—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters
- F01N3/023—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles
- F01N3/0237—Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles for regenerating ex situ
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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
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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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
- F01N9/00—Electrical control of exhaust gas treating apparatus
- F01N9/002—Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Processes For Solid Components From Exhaust (AREA)
Abstract
The invention discloses a diesel engine discrete DPF thermal management regeneration device for a service station, which is in butt joint with a vehicle-mounted DPF disassembled from a whole vehicle to automatically realize regeneration of a DPF system. The diesel engine discrete DPF thermal management regeneration device for the service station comprises a blowing device, a mixed gas injection device, a burner, a DOC device, a DPF device and an electric control unit. The invention does not need to carry out a large amount of internal thermal management calibration of the diesel engine, has independent post-treatment thermal management calibration, simple installation and arrangement and convenient maintenance, and is suitable for the post-treatment after-sale service requirements of the refitting of various diesel engines in China by using vehicles.
Description
Technical Field
The invention relates to the technical field of diesel engine aftertreatment maintenance, in particular to a diesel engine discrete DPF thermal management regeneration device for a service station.
Background
When a diesel vehicle is operating, its pollutants are soot particles PM and nitrogen oxides NOx, wherein the PM emissions are several tens of times that of gasoline engines. Diesel Particulate Filter (DPF) technology is considered to be the closest to the practical and industrial Diesel vehicle Particulate aftertreatment technology, and the key technology is Filter material and Filter regeneration. Since the limit of the ability of DPF to trap carbon particles requires periodic burning of carbon particles in DPF at high temperature, the regeneration method is a technical difficulty in regeneration of filter. With the implementation of national IV standards of non-road fuel vehicles, enterprises such as ports, docks, mines, power plants and the like have a large number of non-road vehicles which need to be added with DPF systems. Since these customers are all group users and the vehicle use place is relatively fixed, it is very costly if the DPF system is installed per road vehicle. Besides, the original PM emission of the non-road fuel vehicle is high, the operation condition is severe, the exhaust temperature is low, the passive regeneration independently relying on the DPF cannot effectively remove particulate matters, and the DPF can be directly blocked.
Disclosure of Invention
The object of the present invention is to solve the problems mentioned in the background section above by means of a diesel engine discrete DPF thermal management regeneration device for a service station.
In order to achieve the purpose, the invention adopts the following technical scheme:
a diesel engine discrete DPF thermal management regeneration device for a service station is in butt joint with a vehicle-mounted DPF disassembled from a whole vehicle, and regeneration of a DPF system is automatically realized.
Particularly, a monitor is additionally arranged on the whole vehicle and used for monitoring whether the vehicle-mounted DPF needs to be regenerated or not.
Particularly, the diesel engine discrete DPF thermal management regeneration device for the service station comprises a blowing device, a mixed gas injection device, a burner, a DOC device, a DPF device and an electric control unit; one side of the burner is connected with an air outlet of the air blowing device; the mixed gas injection device comprises a gas pump, an oil-gas mixer and a mixed gas pressure sensor; one side of the mixed gas injection device is connected with one side of an inlet of the combustor; the combustor comprises a fuel nozzle, an ignition plug and a multi-stage combustion cavity; one side of the combustor is connected with one side of an inlet of the DOC catalyst; and the electric control unit is connected with the blowing device, the mixed gas injection device, the burner, the DOC device, the DPF device, the fuel electromagnetic pump, the air plunger pump and the ignition preheating plug.
In particular, a flame temperature sensor is mounted on the burner; a DPF front temperature sensor is arranged at the outlet of the DOC device; one side of the DOC device is connected with one side of an inlet of the DPF catalyst through a flange.
Particularly, a pre-DPF temperature sensor and a post-DPF temperature sensor are respectively arranged at the inlet and the outlet of the DPF device; and DPF differential pressure sensors are arranged in the front and at the back of the DPF device.
In particular, the diesel engine discrete DPF thermal management regeneration device for the service station further comprises a liquid crystal display; the liquid crystal display is connected with the electric control unit.
In particular, the liquid crystal display is provided with a regeneration request button, a regeneration stop torque, a fault display lamp and a regeneration process display lamp which are connected with the electronic control unit.
In particular, the diesel engine discrete DPF thermal management regeneration device for the service station further comprises but is not limited to a burner fixing support, a DOC and DPF fixing support, a movable cart and a power supply system.
The diesel engine discrete DPF thermal management regeneration device for the service station is in butt joint with a vehicle-mounted DPF disassembled from a whole vehicle, and regeneration of a DPF system is automatically realized. The invention has the following advantages: firstly, separating a regeneration device from a DPF assembly unit to form a discrete DPF regeneration system; secondly, the regeneration device is manually accessed during regeneration (the regeneration process is still an automatic process), and multiple machines can share one regeneration device through limited manual intervention, so that the modification cost of the DPF system is reduced; thirdly, the regeneration device does not need to be installed on a vehicle, so that no special requirements are required on the vibration resistance, the sealing performance and the extreme temperature change resistance of the regeneration device, and the cost of the regeneration device can be further reduced. And fourthly, compared with a regeneration mode that the DPF is placed in a heating furnace for baking, the regeneration method has short regeneration time, and the regeneration time is about 30 minutes each time.
Drawings
Fig. 1 is a schematic diagram of a diesel engine discrete DPF thermal management regeneration device for a service station according to an embodiment of the present invention.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete. It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
Referring to fig. 1, fig. 1 is a schematic diagram illustrating a principle of a discrete DPF thermal management regeneration apparatus for a service station according to an embodiment of the present invention.
In this embodiment, the diesel engine discrete DPF heat management regeneration device for the service station is in butt joint with the vehicle-mounted DPF disassembled from the whole vehicle, so that regeneration of the DPF system is automatically realized. Specifically, in this embodiment, a monitor is additionally mounted on the whole vehicle, and the monitor is used for monitoring whether the vehicle-mounted DPF needs to be regenerated.
Specifically, in the present embodiment, the diesel engine discrete DPF thermal management regeneration device for a service station includes a blower device, a mixture injection device, a burner, a DOC device, a DPF device, and an electronic control unit. Wherein, one side of combustor with the air outlet of air-blast device links to each other, and the function of air-blower mainly realizes sufficient oxygen and provides, guarantees that the fuel gas mixture fully burns. The mixed gas injection device comprises a gas pump, an oil-gas mixer and a mixed gas pressure sensor. The gas mixing device is mainly used for providing a mixture of fuel oil and air, has good atomization uniformity and can be fully ignited by the glow plug. One side of the mixed gas injection device is connected with one side of the inlet of the combustor through an injection hose. The burner comprises a fuel nozzle, an ignition plug and a multi-stage combustion chamber, and after the mixed gas of fuel and air is ignited in the primary combustion chamber, the mixed gas is combusted. Through the continuous burning with the fuel gas mixture through multistage burning chamber of carminative oxygen, flame is broken, guarantees that the combustion uniformity is good, and combustion efficiency provides. A flame temperature sensor is arranged on the burner; one side of the combustor is connected with one side of an inlet of the DOC catalyst through a flange. A temperature sensor in front of the DPF is arranged at the outlet of the DOC device; one side of the DOC device is connected with one side of an inlet of the DPF catalyst through a flange. The DOC device has the main function that unburned hydrocarbon in the combustor is further subjected to secondary oxidation heat release on the DOC catalyst, and the generated heat provides DPF regeneration temperature to realize combustion of particulate matters. The inlet and the outlet of the DPF device are respectively provided with a DPF front temperature sensor and a DPF rear temperature sensor; and DPF differential pressure sensors are arranged in the front and at the back of the DPF device. One side of the DPF device is connected with one side of the exhaust pipe through a flange. The main function of the DPF device is to realize the trapping function of particulate matters and ensure that the particulate matters are subjected to temperature regeneration on a DPF carrier. The main functions of the electric control unit are to control the fuel electromagnetic pump, the air plunger pump and the ignition preheating plug through testing the temperature of the burner, the DOC catalyst and the DPF catalyst and the differential pressure sensor signal, to realize the sufficient ignition of the mixed gas and to ensure that the front exhaust temperature of the DPF reaches the target regeneration temperature.
Specifically, in this embodiment, the diesel engine discrete DPF thermal management regeneration apparatus for a service station further includes a liquid crystal display; the liquid crystal display is connected with the electric control unit. The main function of the liquid crystal display is that the electric control unit sends the temperature, the differential pressure signal and the fault diagnosis signal of the burner, the DOC catalyst and the DPF catalyst to the liquid crystal display through the bus CAN, so that a user CAN clearly see the working state of the burner DPF system. The liquid crystal display can display various temperature, pressure difference, fault codes and other information sent by the electric control unit. In this embodiment, the lcd is provided with a regeneration request button, a regeneration stop torque, a failure indicator, and a regeneration process indicator, which are connected to the electronic control unit. Specifically, the diesel engine discrete DPF thermal management regeneration device for the service station in this embodiment further includes, but is not limited to, a burner fixing support, a DOC and a DPF fixing support, a movable cart, and a power supply system.
When a vehicle needs to maintain and regenerate the DPF after-treatment of the diesel engine, firstly, the DOC and the DPF carrier are disassembled from the whole vehicle, and the invention is arranged on a fixed bracket of an adjustable regeneration device and fixed, thereby ensuring that the after-treatment can not slide and fall off. The regenerating apparatus was connected to a 220V power supply and prepared for regeneration. The working principle of the invention is as follows:
firstly, a power supply of a fan is started, sufficient air is provided for a post-processing carrier, a regeneration request button on a screen of a liquid crystal display is pressed for more than 5 seconds, a burner system starts to work in a dry mode, and a burner electronic control unit controls a fuel oil metering electromagnetic valve, an air plunger pump and a high-temperature preheating plug. The high-temperature glow plug needs to be heated for more than 2 minutes firstly, and then fuel and air are supplied, so that the mixed gas is fully heated and quickly ignited. The heat generated by combustion is subjected to heat convection by the air of the blower, so that the temperature of the DPF is further increased to about 550-700 ℃. The actual temperature value of the DPF carrier front temperature is measured and input into an after-treatment electronic control unit, and the electronic control unit comprises an initialization mode, a heating mode, a DPF regeneration mode, a regeneration end purging mode and a manual regeneration mode. The electric control unit performs closed-loop control on the regeneration temperature to ensure that the temperature of the DPF carrier is in a proper regeneration temperature interval. If the temperature before the DPF carrier exceeds 550 ℃, the electronic control unit stops the work of the fuel oil metering electromagnetic valve, and if the temperature before the DPF carrier is lower than 500 ℃, the electronic control unit restores the work of the fuel oil metering electromagnetic valve. The carbon particulate matter in the DPF carrier is burnt by the high-temperature gas, a large amount of heat can be emitted in the process, and when the temperature is higher than 700 ℃ in front of the DPF carrier, the electric control unit stops the work of the fuel electromagnetic valve to protect the carrier. The pressure difference across the DPF decreases as the amount of carbon loaded in the DPF device gradually decreases, and when the particulate matter in the DPF carrier is completely burned, the pressure difference across the DPF is generally 0.2kPa to 0.6kPa, and it is determined that the regeneration process is completed. Thus, when the regeneration end button of the liquid crystal display is pressed, the electronic control unit stops fuel injection, the plunger fan works for 2 minutes further, and ignition of residual fuel is carried out until the fuel is completely combusted. Then the blower is stopped and the system regeneration process is finished.
The invention does not need to carry out a large amount of internal thermal management calibration of the diesel engine, has independent post-treatment thermal management calibration, simple system installation and arrangement and convenient maintenance, and is suitable for the post-treatment after-sale service requirements of the refitting of various diesel engines in China by using vehicles. The technical scheme provided by the invention ensures that the particulate matters of the diesel engine are reliably regenerated and controlled, and the fuel oil is directly taken from the independent oil tank.
According to the invention, the vehicle is only provided with the DPF and the DPF monitor, and the regeneration device is not additionally provided. When the monitor monitors that the DPF needs to be regenerated, the vehicle is driven to a specified service station, and after the discrete DPF regeneration service system and the vehicle-mounted DPF are manually butted, equipment is started to automatically realize the regeneration of the DPF system, and the invention has the advantages that: firstly, separating a regeneration device from a DPF assembly unit to form a discrete DPF regeneration system; secondly, the regeneration device is manually accessed during regeneration (the regeneration process is still an automatic process), and multiple machines can share one regeneration device through limited manual intervention, so that the modification cost of the DPF system is reduced; thirdly, the regeneration device does not need to be installed on a vehicle, so that no special requirements are required on the vibration resistance, the sealing performance and the extreme temperature change resistance of the regeneration device, and the cost of the regeneration device can be further reduced. And fourthly, compared with a regeneration mode that the DPF is placed in a heating furnace for baking, the regeneration time of the invention is short, and each regeneration time is about 30 minutes.
It will be understood by those skilled in the art that all or part of the above embodiments may be implemented by the computer program to instruct the relevant hardware, and the program may be stored in a computer readable storage medium, and when executed, may include the procedures of the embodiments of the methods as described above. The storage medium may be a magnetic disk, an optical disk, a read-only memory or a random access memory.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (4)
1. A diesel engine discrete DPF thermal management regeneration device for a service station is characterized in that the device is in butt joint with a vehicle-mounted DPF disassembled from a whole vehicle, and regeneration of a DPF system is automatically realized; a monitor is additionally arranged on the whole vehicle and used for monitoring whether the vehicle-mounted DPF needs to be regenerated or not; the device comprises a blowing device, a mixed gas injection device, a burner, a DOC device, a DPF device and an electric control unit; one side of the burner is connected with an air outlet of the air blowing device; the mixed gas injection device comprises a gas pump, an oil-gas mixer and a mixed gas pressure sensor; one side of the mixed gas injection device is connected with one side of an inlet of the combustor; the combustor comprises a fuel nozzle, an ignition plug and a multi-stage combustion cavity; one side of the combustor is connected with one side of an inlet of the DOC catalyst; the electric control unit is connected with the air blowing device, the mixed gas injection device, the burner, the DOC device, the DPF device, the fuel electromagnetic pump, the air plunger pump and the ignition preheating plug; a flame temperature sensor is arranged on the burner; the outlets of the DOC devices are respectively provided with a DPF front temperature sensor; one side of the DOC device is connected with one side of an inlet of the DPF catalyst through a flange; the inlet and the outlet of the DPF device are respectively provided with a DPF front temperature sensor and a DPF rear temperature sensor; and DPF differential pressure sensors are arranged in the front and at the back of the DPF device.
2. The diesel discrete DPF thermal management regeneration device for a service station of claim 1, further comprising a liquid crystal display; the liquid crystal display is connected with the electric control unit.
3. The diesel-engine discrete DPF thermal management regeneration device for a service station as set forth in claim 2, wherein a regeneration request button, a regeneration stop torque, a malfunction indication lamp, a regeneration process indication lamp connected to said electronic control unit are provided on said liquid crystal display.
4. The diesel discrete DPF thermal management regeneration device for service stations of claim 3, further comprising but not limited to burner mount, DOC and DPF mount, mobile cart, power system.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010241188.4A CN111412039B (en) | 2020-03-31 | 2020-03-31 | Diesel engine discrete DPF thermal management regeneration device for service station |
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| CN202010241188.4A CN111412039B (en) | 2020-03-31 | 2020-03-31 | Diesel engine discrete DPF thermal management regeneration device for service station |
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| CN111412039B true CN111412039B (en) | 2021-12-31 |
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Citations (7)
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| CN104481646A (en) * | 2014-10-29 | 2015-04-01 | 凯龙高科技股份有限公司 | Regeneration control system and method for diesel particulate filter (DPF) diesel particle filtering system |
| JP2015068237A (en) * | 2013-09-27 | 2015-04-13 | 株式会社クボタ | Exhaust treatment device for diesel engine |
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| EP3517749A1 (en) * | 2018-01-29 | 2019-07-31 | Guizhou Huangdi Technology Co., Ltd. | Exhaust gas processing system for diesel engine |
| CN209704674U (en) * | 2019-02-15 | 2019-11-29 | 一汽解放汽车有限公司 | A kind of dpf regeneration device for service station |
| CN110735690A (en) * | 2019-10-24 | 2020-01-31 | 凯龙高科技股份有限公司 | high-temperature maintenance device for electrically heated particle catcher |
-
2020
- 2020-03-31 CN CN202010241188.4A patent/CN111412039B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2015068237A (en) * | 2013-09-27 | 2015-04-13 | 株式会社クボタ | Exhaust treatment device for diesel engine |
| CN104454085A (en) * | 2014-10-29 | 2015-03-25 | 凯龙高科技股份有限公司 | Oil injection combustion-supporting regeneration temperature control method for DPF diesel engine particle filter system |
| CN104481646A (en) * | 2014-10-29 | 2015-04-01 | 凯龙高科技股份有限公司 | Regeneration control system and method for diesel particulate filter (DPF) diesel particle filtering system |
| CN107013292A (en) * | 2017-05-26 | 2017-08-04 | 凯龙高科技股份有限公司 | DPF initiative regeneration control systems based on heat management in machine and blast pipe oil spout |
| EP3517749A1 (en) * | 2018-01-29 | 2019-07-31 | Guizhou Huangdi Technology Co., Ltd. | Exhaust gas processing system for diesel engine |
| CN209704674U (en) * | 2019-02-15 | 2019-11-29 | 一汽解放汽车有限公司 | A kind of dpf regeneration device for service station |
| CN110735690A (en) * | 2019-10-24 | 2020-01-31 | 凯龙高科技股份有限公司 | high-temperature maintenance device for electrically heated particle catcher |
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