CN113804596A - Soot loading system and loading method thereof - Google Patents
Soot loading system and loading method thereof Download PDFInfo
- Publication number
- CN113804596A CN113804596A CN202111114863.8A CN202111114863A CN113804596A CN 113804596 A CN113804596 A CN 113804596A CN 202111114863 A CN202111114863 A CN 202111114863A CN 113804596 A CN113804596 A CN 113804596A
- Authority
- CN
- China
- Prior art keywords
- soot
- loading
- engine
- control system
- gpf
- 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.)
- Granted
Links
- 239000004071 soot Substances 0.000 title claims abstract description 186
- 238000011068 loading method Methods 0.000 title claims abstract description 137
- 239000003054 catalyst Substances 0.000 claims abstract description 32
- 238000009825 accumulation Methods 0.000 claims abstract description 27
- 238000004891 communication Methods 0.000 claims abstract description 16
- 239000000446 fuel Substances 0.000 claims description 32
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 28
- 229910052760 oxygen Inorganic materials 0.000 claims description 28
- 239000001301 oxygen Substances 0.000 claims description 28
- 238000002347 injection Methods 0.000 claims description 22
- 239000007924 injection Substances 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 20
- 238000011144 upstream manufacturing Methods 0.000 claims description 6
- 239000010705 motor oil Substances 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000011161 development Methods 0.000 description 9
- 230000018109 developmental process Effects 0.000 description 9
- 238000000034 method Methods 0.000 description 9
- 230000008929 regeneration Effects 0.000 description 5
- 238000011069 regeneration method Methods 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 238000009529 body temperature measurement Methods 0.000 description 3
- 229910052799 carbon Inorganic materials 0.000 description 3
- 230000003197 catalytic effect Effects 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 239000013618 particulate matter Substances 0.000 description 3
- 238000007664 blowing Methods 0.000 description 2
- 238000006555 catalytic reaction Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000000779 smoke Substances 0.000 description 2
- 238000003915 air pollution Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/06—Investigating concentration of particle suspensions
-
- 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
- Chemical & Material Sciences (AREA)
- Dispersion Chemistry (AREA)
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The invention relates to the technical field of engines, in particular to a soot loading system and a soot loading method thereof. Each soot loading unit comprises a catalyst, a GPF (general purpose filter) and a first soot measuring device, the catalyst is arranged on one of two exhaust pipelines of the V-shaped engine, the GPF is arranged on the exhaust pipeline and located at the downstream of the catalyst, and the first soot measuring device is used for measuring the first real-time soot concentration between the catalyst and the GPF and is in communication connection with the bench control system, so that the bench control system calculates the first soot accumulation value and judges the next-step operation parameters of the V-shaped engine.
Description
Technical Field
The invention relates to the technical field of engines, in particular to a soot loading system and a loading method thereof.
Background
Gasoline engine Particulate matter emissions are one of the sources of air pollution, and Gasoline engine Particulate traps (Gasoline Particulate Filter GPF) are an important means of treating Gasoline engine Particulate matter emissions. GPF is used as a wall-flow soot filtering device, soot needs to be intercepted and periodically regenerated, otherwise, the long-term effective GPF soot intercepting function cannot be met. In the development process of a passenger car carrying a GPF, a GPF control system needs to be developed. The GPF control system has the problems of long development period, complicated calibration process and the like in the development process, and GPFs with different carbon capacities need to be repeatedly subjected to regeneration tests in the calibration process, namely a large number of loading and regeneration tests are required. The loading test on the vehicle is limited by working conditions, high temperature and dismounting conditions, and the loading efficiency is low.
Therefore, a soot loading system and a loading method thereof are needed to solve the above problems.
Disclosure of Invention
The invention aims to provide a soot loading system which can improve soot loading efficiency and shorten the development period of a GPF control system.
In order to achieve the purpose, the invention adopts the following technical scheme:
a soot loading system comprising:
a V-type engine;
the engine control unit is in communication connection with the V-shaped engine so as to control the running parameters of the V-shaped engine;
the dynamometer is used for measuring the power of the V-shaped engine;
the stand control system is in communication connection with the engine control unit and the dynamometer respectively;
two soot loading units, each of the soot loading units comprising:
a catalyst provided on one of two exhaust lines of the V-type engine;
a GPF disposed on the exhaust conduit downstream of the catalyst;
the first soot measuring device is used for measuring a first real-time soot concentration of the exhaust pipeline between the catalytic converter and the GPF, and the first soot measuring device is in communication connection with the bench control system, so that the bench control system calculates a first soot accumulation value according to the first real-time soot concentration, judges the next operation parameter of the V-shaped engine and transmits the first soot accumulation value to the engine control unit.
Optionally, each soot loading unit further comprises a first oxygen sensor and a second oxygen sensor both communicatively connected to the gantry control system, the first oxygen sensor for measuring an oxygen concentration in the exhaust conduit upstream of the catalyst, the second oxygen sensor for measuring an oxygen concentration in the exhaust conduit downstream of the GPF or between the catalyst and the GPF.
Optionally, each soot loading unit further comprises a first temperature measuring element and a second temperature measuring element both communicatively coupled to the gantry control system, the first temperature measuring element for measuring a temperature within the GPF, the second temperature measuring element for measuring a temperature within the exhaust line upstream of the catalyst.
Optionally, the soot loading system further includes a variable frequency fan, the variable frequency fan is in communication connection with the rack control system, so that the rack control system transmits the power of the V-type engine to the variable frequency fan, and the variable frequency fan adjusts the wind speed of blowing to the V-type engine according to the power.
Optionally, each soot loading unit further includes a second soot measurement device for measuring a second real-time soot concentration in the exhaust line downstream of the GPF, and the second soot measurement device is communicatively connected to the gantry control system, so that the gantry control system calculates the first soot accumulation value according to the first real-time soot concentration and the second real-time soot concentration.
Optionally, the soot loading system further comprises a fuel supply system, and the fuel supply system is in communication with the engine control unit, so that the fuel supply system supplies fuel to the V-type engine according to the operating parameters of the V-type engine.
Another object of the present invention is to provide a soot loading method, which can improve soot loading efficiency and shorten development cycle of a GPF control system.
In order to achieve the purpose, the invention adopts the following technical scheme:
the soot loading method of the soot loading system comprises the following steps:
and (3) accelerating stage: the engine control unit controls the V-type engine to adjust the rotating speed to a loading rotating speed N1, adjust the load to a loading load RL1 and adjust the air-fuel ratio to a loading air-fuel ratio lambda 1, after the operation parameters are stabilized, the injection pressure of the V-type engine is adjusted to a loading injection pressure P1, and the injection time is gradually adjusted to a loading injection time A1;
a loading stage: the V-shaped engine continuously operates under the working condition, the GPF loads soot, the bench control system calculates a first soot accumulation value according to the first real-time soot concentration, and when the first soot accumulation value is larger than or equal to a target soot loading value M0, the V-shaped engine enters a cooling stage.
Optionally, the method further comprises the following steps:
a heat engine stage: before the speed-up stage, the engine control unit controls the V-type engine to adjust the rotating speed to a preheating rotating speed N0 and keep the rotating speed until the water temperature and the engine oil temperature of the V-type engine are both greater than or equal to a first preset temperature T1, and the speed-up stage is started.
Optionally, the method further comprises the following steps:
and (3) cooling: after the loading stage, the engine control unit controls the V-type engine to gradually adjust the rotating speed to a cooling rotating speed N2, adjust the load to a cooling load RL2, adjust the air-fuel ratio not to be higher than the cooling air-fuel ratio lambda 2, keep running under the working condition until the temperature of the GPF is lower than a second preset temperature T2, and close the V-type engine.
Alternatively, the load speed N1, the load RL1, the load air-fuel ratio λ 1, the load injection pressure P1, and the load injection timing a1 satisfy the following conditions:
2800rpm≤N1≤3000rpm；
80％≤RL1≤110％；
0.75≤λ1≤0.9；
10MPa≤P1≤20MPa；
10°CABTDC≤A1≤40°CABTDC。
the invention has the beneficial effects that:
the invention provides a soot loading system, which uses a V-shaped engine, and because the V-shaped engine is provided with two exhaust pipelines, and each exhaust pipeline is provided with a set of soot loading unit, soot loading can be simultaneously carried out on two GPFs, thus the loading efficiency is improved, and the loading period of the GPFs is shortened. The soot loading system is provided with an engine control unit, a dynamometer and a bench control system, and each soot loading unit is provided with a catalyst and a first soot measuring device. The engine control unit controls the operation parameters of the V-shaped engine, so that the V-shaped engine can be operated under the working condition that a large amount of soot can be generated, and simultaneously, the exhaust gas of the V-shaped engine flows through the GPF after passing through the catalyst, so that a large amount of soot can be loaded in the GPF. First real-time soot concentration in the exhaust pipe between catalyst converter and the GPF is measured to first soot measuring device, and first real-time soot concentration is transmitted to rack control system to first soot measuring device. Assuming that all soot is loaded into the GPF, the rack control system can calculate a first soot accumulation value at each moment according to the first real-time soot concentration. When the first soot accumulation value reaches the target soot accumulation value, soot loading may be stopped. The invention also provides a soot loading method, which comprises a speed-up stage and a loading stage. First, the engine control unit controls the V-type engine to adjust the rotation speed to the load rotation speed N1, adjust the load to the load RL1, and adjust the air-fuel ratio to the load air-fuel ratio λ 1. When the V-type engine keeps the working condition, the engine control unit controls the injection pressure of the V-type engine to be adjusted to a loading injection pressure P1, and the injection time is gradually adjusted to a loading injection time A1, namely the soot loading working condition of the V-type engine. The V-type engine remains running at this condition and the GPF continues to be loaded with soot. The bench control system calculates a first soot accumulation value according to the first real-time soot concentration, and when the first soot accumulation value is larger than or equal to a target soot loading value M0, the GPF loading soot is completed. At the moment, the bench control system transmits the electric signal of soot loading to the engine control unit, the engine control unit controls the V-shaped engine to enter a cooling stage, the soot loading amount of the stage is negligible, and therefore the GPF can be considered to stop the soot loading. The soot loading system and the loading method thereof can improve soot loading efficiency and effectively shorten the development period of the GPF control system.
Drawings
FIG. 1 is a schematic structural diagram of a soot loading system provided by an embodiment of the present invention;
fig. 2 is a schematic flow chart of a soot loading method of the soot loading system according to the embodiment of the present invention.
In the figure:
1. a V-type engine; 2. an engine control unit; 3. a dynamometer; 4. a gantry control system; 5. a catalyst; 6. GPF; 7. a first soot measuring device; 8. a variable frequency fan; 9. a first oxygen sensor; 10. a second oxygen sensor; 11. a first temperature measuring element; 12. a second temperature measuring element; 13. a fuel supply system.
Detailed Description
The technical scheme of the invention is further explained by combining the attached drawings and the embodiment. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some but not all of the elements associated with the present invention are shown in the drawings.
In the description of the present invention, it should be noted that unless otherwise explicitly stated or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection or a removable connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present invention, unless otherwise expressly stated or limited, "above" or "below" a first feature means that the first and second features are in direct contact, or that the first and second features are not in direct contact but are in contact with each other via another feature therebetween. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
GPF6 is an important means for treating particulate matter emission of gasoline engines, GPF6 as a wall-flow soot filtering device needs periodic regeneration treatment while intercepting soot, otherwise, the long-term effective GPF6 soot intercepting function cannot be met. In the development process of a passenger car equipped with GPF6, a control system for GPF6 needs to be developed. During the development process of the GPF6 control system, a large number of GPF6 loading and regeneration tests are required. The loading test on the vehicle is limited by working conditions, high temperature and dismounting conditions, and the loading efficiency is low. Accordingly, the present embodiment provides a soot loading system and a loading method thereof to solve the above problems.
Specifically, as shown in fig. 1, the soot loading system includes a V-type engine 1, an engine control unit 2, a dynamometer 3, a bench control system 4, and two soot loading units. Wherein, engine control unit 2 is connected with V type engine 1 communication, and engine control unit 2 can control the operating parameter of V type engine 1. The dynamometer 3 is used for measuring the power of the V-engine 1. The bench control system 4 is in communication connection with the engine control unit 2 and the dynamometer 3 respectively, and the bench control system 4 acquires the power of the V-shaped engine 1 from the dynamometer 3 and transmits the power to the engine control unit 2, so that the engine control unit 2 controls the operation parameters of the V-shaped engine 1 according to the feedback power.
Each soot loading unit comprises a catalyst 5, a GPF6 and a first soot measuring device 7. The catalyst 5 is arranged on one of two exhaust pipelines of the V-shaped engine 1, the GPF6 is arranged on the exhaust pipeline and is positioned at the downstream of the catalyst 5, namely, the exhaust of the V-shaped engine 1 firstly passes through the catalyst 5 to react, and the generated substances flow through the GPF 6. First soot measuring device 7 is used for measuring the first real-time soot concentration of the exhaust pipe between catalyst 5 and GPF6, and first soot measuring device 7 is connected with rack control system 4 communication, can transmit first real-time soot concentration to rack control system 4. Assuming that all soot is loaded into the GPF6, the gantry control system 4 can integrate and calculate a first soot accumulation value at each time according to the first real-time soot concentration. When the first soot accumulation value reaches the target soot accumulation value, soot loading may be stopped. The gantry control system 4 can determine the next operation parameters of the V-type engine 1 and transmit the parameters to the engine control unit 2.
In order to ensure a suitable oxygen concentration inside the catalyst 5 to ensure the efficiency of the catalytic reaction, each soot loading unit optionally further comprises a first oxygen sensor 9, each communicatively connected to the gantry control system 4. Specifically, the first oxygen sensor 9 is used to measure the oxygen concentration in the exhaust line upstream of the catalyst 5. At the same time, the first oxygen sensor 9 can also monitor the oxygen concentration to prevent the soot from burning at high temperatures when the oxygen concentration is too high. Optionally, each soot loading unit further comprises a second oxygen sensor 10 communicatively connected to the gantry control system 4, wherein the second oxygen sensor 10 is configured to measure the oxygen concentration in the exhaust line downstream of the GPF6 or between the catalyst 5 and the GPF6, so as to monitor the catalytic effect of the catalyst 5, and further prevent the oxygen concentration in the GPF6 from being too high, and thus soot is burned in a high temperature state. Optionally, the first oxygen sensor 9 and/or the second oxygen sensor 10 is a linear oxygen sensor.
In order to monitor the temperature in the GPF6, each soot loading unit optionally further comprises a first temperature measuring element 11, each communicatively connected to the gantry control system 4, the first temperature measuring element 11 being adapted to measure the temperature in the GPF 6. Optionally, in order to ensure the accuracy of the temperature measurement data, the first temperature measurement element 11 is provided in plurality and distributed at different positions within the GPF 6. Alternatively, the present embodiment is provided with three first temperature measurement elements 11 arranged at the upper, middle, and downstream positions within the GPF6, respectively.
In order to ensure that the temperature in the catalytic converter 5 is suitable for the catalytic reaction, each soot loading unit optionally further comprises a second temperature measuring element 12, which are both in communication with the gantry control system 4. The second temperature measuring element 12 is used to measure the temperature in the exhaust line upstream of the catalyst 5.
In order to avoid the damage to the V-type engine 1 caused by the excessively high temperature of the V-type engine 1 under the operation condition, optionally, the soot loading system further includes a variable frequency fan 8. The variable frequency fan 8 is used for blowing air to the V-shaped engine 1 to cool, and in order to adjust the air speed of the variable frequency fan 8 according to the operation condition of the V-shaped engine 1, optionally, the variable frequency fan 8 is in communication connection with the rack control system 4, the rack control system 4 transmits the power of the V-shaped engine 1 to the variable frequency fan 8, and the variable frequency fan 8 adjusts the air speed according to the power of the V-shaped engine 1.
To ensure a more accurate first soot accumulation value for GPF6, each soot loading unit optionally further comprises a second soot measuring device (not shown in the figure). The second soot measurement device is used to measure a second real-time soot concentration in the exhaust line downstream of the GPF6, i.e., to measure the concentration of soot that is not trapped by the GPF 6. Second soot measuring device is connected with the communication of rack control system 4, and rack control system 4 can be according to first real-time soot concentration and the real-time soot concentration of second, and the first soot accumulation value of comprehensive calculation.
Optionally, the soot loading system further comprises a fuel supply system 13, which fuel supply system 13 is used for supplying fuel to the V-engine 1. The fuel supply system 13 is in communication with the engine control unit 2 such that the fuel supply system 13 adjusts the amount of real-time fuel supplied to the V-engine 1 in accordance with the operating parameters of the V-engine 1.
This soot loading system uses V type engine 1, because V type engine 1 has two exhaust pipes, sets up one set of soot loading unit on every exhaust pipe, can carry out soot loading to two GPF6 simultaneously, improves loading efficiency, shortens GPF 6's loading cycle. The soot loading system is provided with an engine control unit 2, a dynamometer 3 and a bench control system 4, each soot loading unit being provided with a catalyst 5 and a first soot measuring device 7. The engine control unit 2 controls the operation parameters of the V-type engine 1 so that the V-type engine 1 is kept operating under a condition where a large amount of soot is generated, and simultaneously, exhaust gas of the V-type engine 1 passes through the GPF6 after passing through the catalyst 5, so that a large amount of soot can be loaded in the GPF 6. A first soot measuring device 7 measures a first real-time soot concentration in the exhaust line between the catalyst 5 and the GPF6, the first soot measuring device 7 transmitting the first real-time soot concentration to the bench control system 4. Assuming that all soot is loaded into the GPF6, the gantry control system 4 can calculate a first soot accumulation value at each time based on the first real-time soot concentration. When the first soot accumulation value reaches the target soot accumulation value, soot loading may be stopped.
The embodiment also provides a soot loading method of the soot loading system. As shown in fig. 2, the soot loading method includes the steps of:
a heat engine stage: in order to ensure that the V-type engine 1 operates stably in the subsequent soot loading phase, it is first necessary to go through a warm-up phase, i.e. the engine control unit 2 controls the V-type engine 1 to adjust the rotational speed to the preheating rotational speed N0 and maintain the rotational speed. And entering a speed increasing stage until the water temperature and the engine oil temperature of the V-shaped engine 1 are both greater than or equal to a first preset temperature T1, namely the heat engine of the V-shaped engine 1 is completed. Alternatively, the preheating rotation speed N0 satisfies: n0 is more than or equal to 1500rpm and less than or equal to 2000rpm, and the heat engine is carried out in the rotating speed range, so that the heat engine efficiency is high, and the energy utilization rate is high. The first preset temperature T1 satisfies: t1 is more than or equal to 75 ℃ and less than or equal to 85 ℃, and the water temperature and the engine oil temperature of the V-shaped engine 1 reach the temperature range, so that the V-shaped engine 1 can be considered to run more stably in the subsequent soot loading stage.
And (3) accelerating stage: the engine control unit 2 controls the V-shaped engine 1 to adjust the operation condition to a loading condition, and the carbon smoke concentration in the exhaust gas of the V-shaped engine 1 is the highest under the loading condition. Specifically, the adjustment from the heat engine operating condition to the loaded operating condition includes the adjustment of the rotation speed from the preheating rotation speed N0 to the loading rotation speed N1, the load adjustment to the loading load RL1, and the air-fuel ratio adjustment to the loading air-fuel ratio λ 1. After the above-described operating parameters are stabilized, the engine control unit 2 controls the injection pressure of the V-type engine 1 to be adjusted to the load injection pressure P1, and the injection timing is gradually adjusted to the load injection timing a 1. Alternatively, the load speed N1, the load RL1, the load air-fuel ratio λ 1, the load injection pressure P1, and the load injection timing a1 satisfy the following conditions: 2800rpm is less than or equal to N1 is less than or equal to 3000 rpm; RL1 is more than or equal to 80 percent and less than or equal to 110 percent; lambda 1 is more than or equal to 0.75 and less than or equal to 0.9; p1 is more than or equal to 10MPa and less than or equal to 20 MPa; a1 is less than or equal to 10 degrees CABTDC and less than or equal to 40 degrees CABTDC.
A loading stage: the V-shaped engine 1 is kept running under the loading working condition, the GPF6 continuously loads soot, and the bench control system 4 calculates a first soot accumulation value according to the first real-time soot concentration or calculates the first soot accumulation value according to the first real-time soot concentration and the second real-time soot concentration. When the first soot accumulation value is larger than or equal to the target soot loading value M0, the V-shaped engine 1 enters a cooling stage. It is appreciated that the target soot loading value M0 may be set according to the requirements of the present GPF6 loading regeneration experiment.
And (3) cooling: to cool the GPF6 after the loading phase, the engine control unit 2 controls the V-engine 1 to adjust from the loading condition to the cooling condition. Namely, the rotation speed is gradually adjusted to the temperature-lowering rotation speed N2, the load is adjusted to the temperature-lowering load RL2, and the air-fuel ratio is adjusted to be not higher than the temperature-lowering air-fuel ratio λ 2. And (3) the V-shaped engine 1 is kept running under the cooling working condition until the temperature of the GPF6 is lower than a second preset temperature T2, cooling is completed, and the V-shaped engine 1 is closed. It is known that the first temperature measuring element 11 is capable of monitoring the temperature within the GPF6 in real time and transmitting a temperature signal to the gantry control system 4 in real time. When the temperature of GPF6 is lower than the second preset temperature T2, the gantry control system 4 can transmit a stop signal to the engine control unit 2 to control the V-engine 1 to be turned off.
Optionally, the specific operating parameters of the cooling condition may be set as: the engine speed N2 is between 1200rpm and not more than N2 and not more than 1800rpm, RL2 and not more than 20 percent and not more than 50 percent, and lambda 2 and not more than 0.9. The V-shaped engine 1 operates under the cooling working condition, the cooling speed can be guaranteed to be high, and the energy utilization rate is high. The second preset temperature T2 satisfies: t2 is more than or equal to 400 ℃ and less than or equal to 500 ℃, and the carbon smoke can be prevented from burning when air leaks into the GPF6 at the temperature.
According to the soot loading method, the thermal engine stage is arranged, the stability of the loading process can be effectively guaranteed, and the soot loading rate of the GPF6 can be effectively guaranteed by adjusting the V-shaped engine 1 to the optimum loading working condition for generating high-concentration soot. After soot loading is completed, the V-shaped engine 1 is adjusted to a cooling working condition to cool GPF6, and subsequent operation safety is guaranteed. The soot loading method can improve the soot loading efficiency in a limited way and shorten the development period of the GPF6 control system.
It should be understood that the above-described embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (10)
1. A soot loading system, comprising:
a V-type engine (1);
the engine control unit (2) is in communication connection with the V-shaped engine (1) to control the operation parameters of the V-shaped engine (1);
a dynamometer (3) for measuring the power of the V-type engine (1);
the stand control system (4) is in communication connection with the engine control unit (2) and the dynamometer (3) respectively;
two soot loading units, each of the soot loading units comprising:
a catalyst (5) provided on one of two exhaust lines of the V-type engine (1);
a GPF (6) arranged on the exhaust pipeline and located downstream of the catalyst (5);
the first soot measuring device (7) is used for measuring a first real-time soot concentration of the exhaust pipeline between the catalyst (5) and the GPF (6), and the first soot measuring device (7) is in communication connection with the bench control system (4) so that the bench control system (4) can calculate a first soot accumulation value according to the first real-time soot concentration, judge the next operation parameter of the V-shaped engine (1) and transmit the first soot accumulation value to the engine control unit (2).
2. A soot loading system as claimed in claim 1, wherein each soot loading unit further includes a first oxygen sensor (9) and a second oxygen sensor (10) both communicatively connected to the gantry control system (4), the first oxygen sensor (9) for measuring oxygen concentration in the exhaust line upstream of the catalyst (5), the second oxygen sensor (10) for measuring oxygen concentration in the exhaust line downstream of the GPF (6) or between the catalyst (5) and the GPF (6).
3. A soot loading system as claimed in claim 1, wherein each soot loading unit further comprises a first temperature measuring element (11) and a second temperature measuring element (12) both communicatively connected to the gantry control system (4), the first temperature measuring element (11) being configured to measure the temperature within the GPF (6), the second temperature measuring element (12) being configured to measure the temperature within the exhaust line upstream of the catalyst (5).
4. A soot loading system as claimed in claim 1, further comprising a variable frequency fan (8), wherein the variable frequency fan (8) is communicatively connected to the gantry control system (4) such that the gantry control system (4) transmits the power of the V-type engine (1) to the variable frequency fan (8), and the variable frequency fan (8) adjusts the speed of the air blown to the V-type engine (1) according to the power.
5. A soot loading system as claimed in claim 1, wherein each soot loading unit further includes a second soot measuring device for measuring a second real-time soot concentration in the exhaust line downstream of the GPF (6), the second soot measuring device being communicatively connected to the gantry control system (4) such that the gantry control system (4) calculates the first soot accumulation value based on the first and second real-time soot concentrations.
6. A soot loading system as claimed in claim 1, further comprising a fuel supply system (13), the fuel supply system (13) being communicatively connected to the engine control unit (2) such that the fuel supply system (13) supplies fuel to the V-engine (1) in accordance with the operating parameters of the V-engine (1).
7. A soot loading method of a soot loading system as claimed in any one of claims 1 to 6, comprising the steps of:
and (3) accelerating stage: the engine control unit (2) controls the V-type engine (1) to adjust the rotating speed to a loading rotating speed N1, adjust the load to a loading load RL1 and adjust the air-fuel ratio to a loading air-fuel ratio lambda 1, after the operation parameters are stabilized, the injection pressure of the V-type engine (1) is adjusted to a loading injection pressure P1, and the injection time is gradually adjusted to a loading injection time A1;
a loading stage: the V-shaped engine (1) continuously operates under the working condition, the GPF (6) loads soot, the bench control system (4) calculates a first soot accumulation value according to the first real-time soot concentration, and when the first soot accumulation value is larger than or equal to a target soot loading value M0, the V-shaped engine (1) enters a cooling stage.
8. A soot loading method as claimed in claim 7, further comprising the steps of:
a heat engine stage: before the speed-up stage, the engine control unit (2) controls the V-shaped engine (1) to adjust the rotating speed to the preheating rotating speed N0 and keep the rotating speed until the water temperature and the engine oil temperature of the V-shaped engine (1) are both greater than or equal to a first preset temperature T1, and the speed-up stage is started.
9. A soot loading method as claimed in claim 7, further comprising the steps of:
and (3) cooling: after the loading stage, the engine control unit (2) controls the V-type engine (1) to gradually adjust the rotating speed to a cooling rotating speed N2, adjust the load to a cooling load RL2, adjust the air-fuel ratio to be not higher than a cooling air-fuel ratio lambda 2, keep running under the working condition until the temperature of the GPF (6) is lower than a second preset temperature T2, and close the V-type engine (1).
10. A soot loading method as claimed in claim 7, wherein the loading rotation speed N1, the loading load RL1, the loading air-fuel ratio λ 1, the loading injection pressure P1, and the loading injection timing A1 satisfy the following conditions:
2800rpm≤N1≤3000rpm；
80％≤RL1≤110％；
0.75≤λ1≤0.9；
10MPa≤P1≤20MPa；
10°CABTDC≤A1≤40°CABTDC。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111114863.8A CN113804596B (en) | 2021-09-23 | 2021-09-23 | Soot loading system and loading method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111114863.8A CN113804596B (en) | 2021-09-23 | 2021-09-23 | Soot loading system and loading method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN113804596A true CN113804596A (en) | 2021-12-17 |
| CN113804596B CN113804596B (en) | 2024-05-03 |
Family
ID=78940319
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111114863.8A Active CN113804596B (en) | 2021-09-23 | 2021-09-23 | Soot loading system and loading method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113804596B (en) |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685291A (en) * | 1985-06-28 | 1987-08-11 | Ontario Research Foundation | Diesel particulate traps |
| US20090019839A1 (en) * | 2007-06-05 | 2009-01-22 | Gray Jr Charles L | Diesel particulate filter regeneration system |
| DE102008006417A1 (en) * | 2008-01-28 | 2009-07-30 | Volkswagen Ag | Soot sensor i.e. Lambda probe, for concentration determination of soot in exhaust gas of carbon-containing fuel of diesel internal-combustion engine of commercial vehicle, has chambers with electrodes for determining oxygen |
| US20090249770A1 (en) * | 2005-03-09 | 2009-10-08 | Makoto Ogiso | Exhaust Gas Purifying Apparatus for Internal Combustion Engine |
| CN101571067A (en) * | 2008-04-02 | 2009-11-04 | 福特环球技术公司 | Method and apparatus for controlling operation of exhaust gas post-treatment device |
| CN101631934A (en) * | 2007-01-31 | 2010-01-20 | 尤米科尔股份公司及两合公司 | Method for regenerating soot filters in the exhaust gas system of a lean mix engine, and exhaust gas system therefor |
| US20110047973A1 (en) * | 2009-08-24 | 2011-03-03 | Cummins Ip, Inc | Apparatus, system, and method for controlling multiple diesel particulate filters |
| US20120204542A1 (en) * | 2010-10-13 | 2012-08-16 | Cummins Intellectual Property, Inc. | Multi-leg exhaust aftertreatment system and method |
| CN107620618A (en) * | 2016-07-15 | 2018-01-23 | 福特环球技术公司 | Method and system for gasoline particles filter operation |
| CN110131016A (en) * | 2019-04-30 | 2019-08-16 | 第一拖拉机股份有限公司 | A kind of quick loading device of DPF soot stable state and loading method |
| CN110273772A (en) * | 2018-03-16 | 2019-09-24 | Fev欧洲有限责任公司 | To method, controller and the combustion engine of the particulate filter load of combustion engine |
| CN110905631A (en) * | 2019-12-04 | 2020-03-24 | 宁波楷世环保科技有限公司 | Low-energy-consumption diesel engine tail gas treatment system suitable for high exhaust flow |
| CN111749803A (en) * | 2020-05-20 | 2020-10-09 | 中国第一汽车股份有限公司 | Regeneration control method for gasoline engine particle catcher |
-
2021
- 2021-09-23 CN CN202111114863.8A patent/CN113804596B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4685291A (en) * | 1985-06-28 | 1987-08-11 | Ontario Research Foundation | Diesel particulate traps |
| US20090249770A1 (en) * | 2005-03-09 | 2009-10-08 | Makoto Ogiso | Exhaust Gas Purifying Apparatus for Internal Combustion Engine |
| CN101631934A (en) * | 2007-01-31 | 2010-01-20 | 尤米科尔股份公司及两合公司 | Method for regenerating soot filters in the exhaust gas system of a lean mix engine, and exhaust gas system therefor |
| US20090019839A1 (en) * | 2007-06-05 | 2009-01-22 | Gray Jr Charles L | Diesel particulate filter regeneration system |
| DE102008006417A1 (en) * | 2008-01-28 | 2009-07-30 | Volkswagen Ag | Soot sensor i.e. Lambda probe, for concentration determination of soot in exhaust gas of carbon-containing fuel of diesel internal-combustion engine of commercial vehicle, has chambers with electrodes for determining oxygen |
| CN101571067A (en) * | 2008-04-02 | 2009-11-04 | 福特环球技术公司 | Method and apparatus for controlling operation of exhaust gas post-treatment device |
| US20110047973A1 (en) * | 2009-08-24 | 2011-03-03 | Cummins Ip, Inc | Apparatus, system, and method for controlling multiple diesel particulate filters |
| US20120204542A1 (en) * | 2010-10-13 | 2012-08-16 | Cummins Intellectual Property, Inc. | Multi-leg exhaust aftertreatment system and method |
| CN107620618A (en) * | 2016-07-15 | 2018-01-23 | 福特环球技术公司 | Method and system for gasoline particles filter operation |
| CN110273772A (en) * | 2018-03-16 | 2019-09-24 | Fev欧洲有限责任公司 | To method, controller and the combustion engine of the particulate filter load of combustion engine |
| CN110131016A (en) * | 2019-04-30 | 2019-08-16 | 第一拖拉机股份有限公司 | A kind of quick loading device of DPF soot stable state and loading method |
| CN110905631A (en) * | 2019-12-04 | 2020-03-24 | 宁波楷世环保科技有限公司 | Low-energy-consumption diesel engine tail gas treatment system suitable for high exhaust flow |
| CN111749803A (en) * | 2020-05-20 | 2020-10-09 | 中国第一汽车股份有限公司 | Regeneration control method for gasoline engine particle catcher |
Non-Patent Citations (3)
| Title |
|---|
| 李祥等: "柴油机运行参数对碳烟排放的影响", 《云南农业大学学报》, vol. 2008, no. 03, pages 414 - 417 * |
| 衣丰艳等: "基于柴油机技术参数变化对碳烟排放影响的试验研究", 《小型内燃机与摩托车》, vol. 2009, no. 04, pages 23 - 25 * |
| 贾美枝等: "改善单缸柴油机加速工况烟度排放的研究", 《农村牧区机械化》, vol. 2008, no. 03, pages 20 - 22 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN113804596B (en) | 2024-05-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP3821391B2 (en) | Internal combustion engine with exhaust gas turbocharger and secondary air injection device | |
| US20110183274A1 (en) | Producing ageing gas for exhaust gas after-treatment systems | |
| US7281369B2 (en) | Deterioration diagnosis of diesel particulate filter | |
| US9109544B2 (en) | Device and method for compressor and charge air cooler protection in an internal combustion engine | |
| JP6072761B2 (en) | Method for supplying thermal energy to an exhaust gas control unit connected to an exhaust gas system of an internal combustion engine | |
| US10100764B2 (en) | Method and device for raising and/or lowering an exhaust gas temperature of a combustion engine having an exhaust gas aftertreatment device arranged in an exhaust line | |
| US20150068195A1 (en) | Exhaust gas retreatment system of an internal combustion engine and method for operating the same | |
| KR101720863B1 (en) | A method of operating an internal combustion engine | |
| JP2009528476A (en) | Exhaust mechanism with a soot filter with catalytic action | |
| GB2356826A (en) | Method and apparatus for ageing a catalyst | |
| CN208845254U (en) | System of degradation post-processor | |
| EP2143919A1 (en) | Particulate filter regeneration system | |
| CN113804596B (en) | Soot loading system and loading method thereof | |
| KR101937000B1 (en) | Method for operating an internal combustion engine | |
| JP2008157228A (en) | Engine system and exhaust gas treatment device regenerating method under restrained combustion in this system | |
| US9803565B1 (en) | System and method for measuring quality of fuel | |
| US20150143802A1 (en) | System and method of controlling exhaust temperature | |
| KR20080108495A (en) | Method and device for operating an internal combustion engine | |
| KR20180110623A (en) | Method and control unit for operating a particle filter | |
| FR2964147A1 (en) | METHOD FOR DETERMINING THE PHYSICAL STATE OF A PARTICLE FILTER | |
| CN104729837A (en) | Performance testing method and system for diesel oxidation catalyst (DOC) | |
| KR101986275B1 (en) | An internal combustion engine with fuel gas property measurement system | |
| FR2876148A1 (en) | METHOD AND DEVICE FOR MANAGING A PARTICLE FILTER INSTALLED IN THE EXHAUST GAS AREA OF AN INTERNAL COMBUSTION ENGINE | |
| BR102013021577A2 (en) | method and system | |
| EP2992193B1 (en) | Device and method for monitoring a treatment component for gaseous emissions of an exhaust system of an internal combustion engine |
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 | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |