CN113720722B - Particle catcher carbon accumulating device and particle catcher rapid and accurate carbon accumulating method - Google Patents
Particle catcher carbon accumulating device and particle catcher rapid and accurate carbon accumulating method Download PDFInfo
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- CN113720722B CN113720722B CN202110979436.XA CN202110979436A CN113720722B CN 113720722 B CN113720722 B CN 113720722B CN 202110979436 A CN202110979436 A CN 202110979436A CN 113720722 B CN113720722 B CN 113720722B
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- 239000002245 particle Substances 0.000 title claims abstract description 184
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 163
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 163
- 238000000034 method Methods 0.000 title claims abstract description 27
- 238000011068 loading method Methods 0.000 claims description 63
- 238000002347 injection Methods 0.000 claims description 41
- 239000007924 injection Substances 0.000 claims description 41
- 239000000446 fuel Substances 0.000 claims description 31
- 239000004071 soot Substances 0.000 claims description 18
- 238000009825 accumulation Methods 0.000 claims description 5
- 230000005540 biological transmission Effects 0.000 claims description 3
- 238000005303 weighing Methods 0.000 claims description 3
- 230000008021 deposition Effects 0.000 claims 1
- 239000000779 smoke Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 2
- 239000003344 environmental pollutant Substances 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 231100000719 pollutant Toxicity 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
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Abstract
The invention belongs to the technical field of vehicle engineering, and discloses a particle catcher carbon accumulating device and a rapid and accurate carbon accumulating method of the particle catcher. The carbon accumulating device of the particle catcher can rapidly accumulate carbon for the particle catcher, and can accurately control the quality of carbon smoke particles accumulated in the particle catcher.
Description
Technical Field
The invention relates to the technical field of vehicle engineering, in particular to a particle catcher carbon accumulating device and a rapid and accurate carbon accumulating method of the particle catcher.
Background
With the improvement of the living standard of people, the use amount of automobiles is increased, and a large amount of automobile pollutants are discharged, so that the automobile pollutants can cause environmental deterioration. The installation of the particle catcher (GPF Gasoline Particle Filter) on the automobile is an effective means for reducing the emission of the automobile exhaust particles. Particulate traps are typically installed in the exhaust line of an automobile, and when exhaust gas with a large amount of soot passes through the particulate trap, the particulate trap's unique internal structure continuously traps soot, thereby reducing the soot content in the exhaust gas.
The influence of the soot particles on the particle catcher can be researched and tested by automobile companies, whole factories, GPF suppliers and the like so as to improve and optimize the particle catcher and enable the particle catcher to operate more effectively, stably and for a long time. The carbon accumulation of the particle catcher is needed during the test, however, the existing carbon accumulation device of the particle catcher is characterized in that an engine is connected with the particle catcher through an exhaust pipe, the engine can only accumulate carbon for one particle catcher at a time, the speed is low, the efficiency is low, and the mass of the carbon particles accumulated in the particle catcher can not be accurately controlled due to the fact that the mass of the particles measured by a particle measuring instrument is in error with the actual carbon load in the particle catcher, so that the particle catcher needs to be repeatedly disassembled and assembled, the carbon particles in the particle catcher are collected and weighed, the mass of the carbon particles in the particle catcher can be obtained, and the time and the labor are wasted.
Accordingly, there is a need for a particle trap carbon accumulating apparatus or method that can rapidly accumulate carbon in a particle trap and accurately control the mass of soot particles accumulated by the particle trap.
Disclosure of Invention
The invention aims to provide a carbon accumulating device of a particle catcher and a rapid and accurate carbon accumulating method of the particle catcher, which can rapidly accumulate carbon in the particle catcher and accurately control the quality of carbon smoke particles accumulated in the particle catcher.
To achieve the purpose, the invention adopts the following technical scheme:
the invention provides a particle catcher carbon accumulating device, comprising:
an engine;
the two exhaust pipes are communicated with one part of cylinders of the engine, the other exhaust pipe is communicated with the other part of cylinders of the engine, and the number of the cylinders communicated by the two exhaust pipes is the same;
the two particle traps are respectively connected with the two exhaust pipes;
the two particle measuring instruments are respectively connected to the two exhaust pipes, and the particle measuring instruments are positioned between the engine and the particle catcher.
As an optimized scheme of the particle catcher carbon accumulating device, the particle catcher carbon accumulating device further comprises an electric power dynamometer, and the electric power dynamometer is in transmission connection with an engine.
As a preferable scheme of the particle catcher carbon accumulating device, the particle catcher carbon accumulating device further comprises a controller, wherein the controller is electrically connected with the electric dynamometer.
As an optimized scheme of the particle catcher carbon accumulating device, the particle catcher carbon accumulating device further comprises a fuel injection controller, wherein the fuel injection controller is electrically connected with a fuel injector of the engine.
As a preferable scheme of the particle catcher carbon accumulating device, the engine adopts a V-shaped 6-cylinder direct injection gasoline engine.
The invention also provides a rapid and accurate carbon accumulating method of the particle catcher, which adopts the carbon accumulating device of the particle catcher and comprises the following steps:
s1: the engine runs for a set time under a first working condition of a first rotating speed and 100% load;
s2: disassembling the particle catcher, and collecting and weighing soot particles in the particle catcher to obtain an actual carbon loading; the mass of the carbon smoke particles measured by the particle measuring instrument is measured as carbon loading;
s3: the engine runs for a set time under a second working condition of a second rotating speed and 100% load, and S2 is carried out;
s4: the engine runs for a set time under a third working condition of a third rotating speed and 100% load, and S2 is carried out;
s5: establishing an actual carbon loading-measured carbon loading coordinate system, and drawing a first point, a second point and a third point on the actual carbon loading-measured carbon loading coordinate system according to the actual carbon loading and the measured carbon loading obtained under the first working condition, the second working condition and the third working condition;
s6: fitting a straight line according to the first point, the second point and the third point;
s7: the correction coefficient MSS is the reciprocal of the slope of the straight line multiplied by M exh X T/ρ, a correction system is obtained from the straight lineCounting MSS;
s8: calculating a target time T required for loading a target carbon load M1 in the particle trap according to the formulas t=m1×mss/0.001+Δt and Δt=m1/0.05+100;
wherein: m1 is the target carbon loading; t is the target time; MSS is correction coefficient; delta T is the load compensation time;
s9: and when the engine runs for the target time T under the working condition of 3000r/min rotating speed and 100% load, the carbon loading capacity in the two particle traps is the target carbon loading capacity M1.
As a preferable scheme of the rapid and accurate carbon accumulating method of the particle catcher, in S9, the engine operates for a certain time under the working condition of 3000r/min rotating speed and 100% load, and after the particle mass measured by the particle measuring instrument reaches more than 1000ug/S, the particle catcher is installed on the exhaust pipe and the engine is driven to operate for a target time T.
As a preferable scheme of the rapid and accurate carbon accumulating method of the particle catcher, the engine ensures that the internal stability of the particle catcher is not more than 800 ℃ when the engine runs under the first working condition, the second working condition and the third working condition.
As a preferable scheme of the rapid and accurate carbon accumulating method of the particle catcher, the carbon accumulating device of the particle catcher further comprises an oil injection controller, and the oil injection controller controls the oil injection quantity, the oil injection time and the oil injection pressure of an oil injector of the engine.
As a preferable scheme of the rapid and accurate carbon accumulating method of the particle catcher, the first rotating speed is 1500r/min, the second rotating speed is 3000r/min, and the third rotating speed is 4500r/min.
The invention has the beneficial effects that: the invention provides a particle catcher carbon accumulating device and a rapid and accurate particle catcher carbon accumulating method. In the carbon accumulating device of the particle catcher, one engine is connected with two particle catchers through two exhaust pipes, and the carbon accumulating can be carried out on the two particle catchers once by running the engine, so that the carbon accumulating efficiency is high. In the rapid and accurate carbon accumulating method of the particle catcher, according to the actual carbon loading of the particle catcher obtained by the carbon accumulating device of the particle catcher under the first working condition, the second working condition and the third working condition and the measured carbon loading measured by the particle measuring instrument, a correction coefficient is obtained, the target time required for loading the target carbon loading is calculated according to the correction coefficient, and finally the mass of the carbon soot particles accumulated in the particle catcher can be accurately controlled by loading the target time to the particle catcher in the carbon accumulating device of the particle catcher.
Drawings
FIG. 1 is a schematic diagram of a carbon accumulating device of a particle catcher according to an embodiment of the present invention;
fig. 2 is a schematic diagram of an actual carbon loading-measured carbon loading coordinate system in a rapid and accurate carbon loading method of a particle catcher according to an embodiment of the present invention.
In the figure:
1. an engine; 2. an exhaust pipe; 3. a particle catcher; 4. a particle measuring instrument; 5. an electric dynamometer; 6. a controller; 7. a fuel injection controller; 11. and an oil injector.
Detailed Description
The invention is described in further detail below with reference to the drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting thereof. It should be further noted that, for convenience of description, only some, but not all of the structures related to the present invention are shown in the drawings.
In the description of the present invention, unless explicitly stated and limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
In the present invention, unless expressly stated or limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, as well as the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", and the like are based on the orientation or positional relationship shown in the drawings, and are merely for convenience of description and simplicity of operation, and do not indicate or imply that the apparatus or element in question must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the invention. Furthermore, the terms "first," "second," and the like, are used merely for distinguishing between descriptions and not for distinguishing between them.
The existing particle catcher carbon accumulating device is characterized in that an engine is connected with a particle catcher through an exhaust pipe, the engine can only accumulate carbon for the particle catcher at one time, the speed is low, the efficiency is low, and the mass of carbon particles accumulated in the particle catcher can not be accurately controlled due to the fact that the mass of particles measured by a particle measuring instrument is in error with the actual carbon loading amount in the particle catcher, so that the particle catcher needs to be repeatedly disassembled and assembled, the carbon particles in the particle catcher are collected and weighed, the mass of the carbon particles in the particle catcher can be obtained, and time and labor are wasted.
The invention provides a particle catcher carbon accumulating device and a rapid and accurate carbon accumulating method of the particle catcher, wherein an engine in the particle catcher carbon accumulating device is connected with two particle catchers through two exhaust pipes, and the two particle catchers can be accumulated carbon once operated by the engine, so that the carbon accumulating efficiency is high; according to the rapid and accurate carbon accumulating method of the particle catcher, a correction coefficient is obtained according to the actual carbon loading of the particle catcher, which is obtained by the carbon accumulating device of the particle catcher under the first working condition, the second working condition and the third working condition, and the measured carbon loading measured by the particle measuring instrument, the target time required for loading the target carbon loading is calculated according to the correction coefficient, and finally the mass of the soot particles accumulated in the particle catcher can be accurately controlled by loading the target time to the particle catcher in the carbon accumulating device of the particle catcher.
Example 1
The embodiment provides a particulate trap carbon accumulating device, as shown in fig. 1, the particulate trap carbon accumulating device includes an engine 1, two exhaust pipes 2, two particulate traps 3 and two particulate measuring instruments 4, one exhaust pipe is communicated with a part of cylinders of the engine, the other exhaust pipe is communicated with another part of cylinders of the engine, the two particulate traps 3 are respectively connected with the two exhaust pipes 2, the number of the cylinders communicated with the two exhaust pipes 2 is the same, the two particulate measuring instruments 4 are respectively connected with the two exhaust pipes 2, and the particulate measuring instruments 4 are positioned between the engine 1 and the particulate traps 3. The engine 1 can simultaneously accumulate carbon for two particle traps 3 when running, can accelerate the carbon accumulation speed, and has high efficiency. The particle meter 4 is able to measure the mass of soot passing through the exhaust pipe 2, but the mass of soot measured by the particle meter 4 has some error with the actual carbon loading in the particle trap 3. According to the actual carbon loading in the particle catcher 3 obtained by running the particle catcher carbon accumulating device under the first working condition, the second working condition and the third working condition and the measured carbon loading measured by the particle measuring instrument 4, a correction coefficient is obtained by fitting, after the correction coefficient is obtained, the target time required by the particle catcher carbon accumulating device for loading the target carbon loading in the particle catcher 3 can be calculated, and the target carbon loading amount can be accurately loaded in the particle catcher 3 when the particle catcher carbon accumulating device loads the target carbon loading in the particle catcher 3.
Alternatively, the engine 1 in the present embodiment employs a V-type 6-cylinder direct injection gasoline engine. One exhaust pipe 2 is communicated with 3 cylinders positioned on one side of the engine 1, and the exhaust pipe 2 is conveniently connected with the engine 1.
Optionally, the electric dynamometer 5 is further included, and the electric dynamometer 5 is in transmission connection with the engine 1. The electric dynamometer 5 is connected with an output shaft of the engine 1 to assist the output shaft of the engine 1 to rotate, and the response speed of the electric dynamometer 5 is high, so that the carbon accumulating speed of the particle catcher 3 is improved. Optionally, the carbon accumulating device of the particle catcher 3 further comprises a controller 6, and the controller 6 is electrically connected with the electric dynamometer 5. The controller 6 controls the rotational speed of the engine 1 by controlling the rotational speed of the electric dynamometer 5 so that the engine 1 can be operated at different rotational speeds.
Optionally, an injection controller 7 is further included, the injection controller 7 being electrically connected to an injector 11 of the engine 1. The fuel injection controller 7 can control the fuel injection quantity, the fuel injection time and the fuel injection pressure of the fuel injector 11 of the engine 1, and the fuel injection controller 7 controls the fuel injection quantity to be larger, the fuel injection time to be longer and the fuel injection pressure to be smaller, so that the soot generated by the engine 1 is more, and the carbon accumulating speed of the particle catcher 3 is further improved.
Example 2
The embodiment provides a quick and accurate carbon accumulating method of a particle catcher, which adopts the above-mentioned carbon accumulating device of the particle catcher and comprises the following steps:
s1: the engine 1 is operated for a set time under a first condition of a first rotational speed and a 100% load.
S2: disassembling the particle catcher 3 and collecting and weighing soot particles in the particle catcher 3 to obtain an actual carbon loading; the mass of soot particles measured by the particle meter 4 is a measure of the carbon loading.
S3: the engine 1 is operated at the second rotation speed for a set time under the second working condition of 100% load, and S2 is performed.
S4: the engine 1 is operated at a third rotation speed and 100% load for a set time under a third condition, and S2 is performed.
S5: establishing an actual carbon loading-measured carbon loading coordinate system, and drawing a first point, a second point and a third point on the actual carbon loading-measured carbon loading coordinate system according to the actual carbon loading and the measured carbon loading obtained under the first working condition, the second working condition and the third working condition.
S6: a straight line is fitted according to the first point, the second point and the third point.
S7: the correction coefficient MSS is the reciprocal of the slope of the straight line multiplied by M exh X T/ρ, obtaining a correction coefficient MSS by the straight line;
s8: the target time T required to load the particle trap 3 with a target carbon loading may be calculated according to the following formulas t=m1×mss/0.001+Δt and Δt=m1/0.05+100;
wherein: m1 is the target carbon loading; t is the target time; MSS is correction coefficient; Δt is the load compensation time.
S9: and the engine 1 runs for a target time T under the working condition of 3000r/min and 100% load, and then the carbon loads in the two particle traps 3 are the target carbon load M1.
The first speed is a low speed, the second speed is a medium speed, the third speed is a high speed, preferably the first speed is 1500r/min, the second speed is 3000r/min, and the third speed is 4500r/min. The correction coefficient obtained by the actual carbon loading obtained by operation under three working conditions and the measured carbon loading is more accurate.
As shown in fig. 2, an actual carbon loading-measured carbon loading coordinate system is established, and a first point, a second point and a third point are respectively depicted on the actual carbon loading-measured carbon loading coordinate system according to the actual carbon loading and the measured carbon loading obtained under the first working condition, the second working condition and the third working condition; fitting a straight line according to the first point, the second point and the third point; the following relationships exist for actual carbon loading, measured carbon loading, target time, engine exhaust density, and engine exhaust mass flow:
wherein: m is the particle catch obtained by weighingThe actual carbon loading of the collector 3; c is the measured carbon loading measured by the particle measuring instrument 4; m is M exh Mass flow for engine exhaust; t is the target time; ρ is the engine exhaust density; MSS is a correction factor.
For fixed working condition and fixed time loading, M exh T and ρ are constants. From this, the correction coefficient MSS is the inverse of the slope of the straight line. From this line, the correction coefficient MSS can be obtained.
After the MSS is obtained, the target time required to load the target carbon loading can be calculated according to the following formula.
T＝M1×MSS/0.001+△T
△T＝M1/0.05+100
Wherein: m1 is the target carbon loading; t is the target time; MSS is correction coefficient; Δt is the load compensation time.
After the target time T required by loading the target carbon load M1 is obtained, the engine 1 runs for the target time T under the working conditions of 3000r/min rotating speed and 100% load, and then the carbon loads in the two particle traps 3 are both the target carbon load M1. The rapid and accurate carbon accumulating method of the particle catcher 3 can accurately control the carbon carrying amount of the particle catcher 3.
The specific steps of running the particle catcher carbon accumulating device in S1, S3, S4 and S9 are as follows: firstly, engine 1 warms up, then the DPF carbon cleaning working condition is operated, then loading time is calculated, after the engine 1 is operated for a required time, the engine 1 is operated to cool, finally, the engine 1 is stopped, and the DPF is dismantled to weigh soot particles.
Optionally, in S9, the engine 1 is operated for a certain time under the working condition of 3000r/min and 100% load, and after the particle mass measured by the particle measuring instrument 4 reaches more than 1000ug/S, the particle catcher 3 is installed on the exhaust pipe 2, and the engine 1 is driven to operate for a target time T. After the particle mass measured by the particle measuring instrument 4 reaches more than 1000ug/s, the engine 1 runs stably, and the carbon loading of the particle catcher 3 can be ensured to be more accurate.
Optionally, when the engine 1 is operated under the first working condition, the second working condition and the third working condition, the internal stability of the particle catcher 3 is ensured not to exceed 800 ℃, so that the obtained correction coefficient is ensured to be more accurate.
Optionally, the carbon accumulating device of the particle catcher 3 further comprises an oil injection controller 7, and the oil injection controller 7 controls the oil injection quantity, the oil injection time and the oil injection pressure of the oil injector 11 of the engine 1. The fuel injection controller 7 controls the larger the fuel injection amount, the longer the fuel injection time and the smaller the fuel injection pressure, the more soot is generated by the engine 1, thereby further accelerating the carbon accumulation speed of the particle catcher 3. In S1, S3, S4 and S9, the fuel injection controller 7 controls the fuel injection amount, the fuel injection timing and the fuel injection pressure of the fuel injector 11 of the engine 1 to be the same so as to ensure that an accurate carbon-carrying amount is obtained.
It is to be understood that the above examples of the present invention are provided for clarity of illustration only and are not limiting of the embodiments of the present invention. Various obvious changes, rearrangements and substitutions can be made by those skilled in the art without departing from the scope of the invention. It is not necessary here nor is it exhaustive of all embodiments. Any modification, equivalent replacement, improvement, etc. which come within the spirit and principles of the invention are desired to be protected by the following claims.
Claims (9)
1. A rapid and accurate carbon accumulating method of a particle catcher is applied to a carbon accumulating device of the particle catcher, and is characterized in that:
the particulate trap carbon accumulating device comprises:
an engine (1);
two exhaust pipes (2), wherein one exhaust pipe (2) is communicated with one part of cylinders of the engine (1), the other exhaust pipe (2) is communicated with the other part of cylinders of the engine (1), and the number of the cylinders communicated by the two exhaust pipes (2) is the same;
two particle traps (3), wherein the two particle traps (3) are respectively connected with the two exhaust pipes (2);
two particle measuring devices (4), wherein the two particle measuring devices (4) are respectively connected to the two exhaust pipes (2), and the particle measuring devices (4) are positioned between the engine (1) and the particle catcher (3);
the rapid and accurate carbon accumulating method of the particle catcher comprises the following steps:
s1: the engine (1) operates for a set time under a first working condition of a first rotating speed and 100% load;
s2: disassembling the particle catcher (3) and collecting and weighing soot particles in the particle catcher (3) to obtain an actual carbon loading; the mass of the soot particles measured by the particle measuring instrument (4) is measured carbon loading;
s3: the engine (1) operates for a set time under a second working condition of a second rotating speed and 100% load, and S2 is carried out;
s4: the engine (1) operates for a set time under a third working condition of a third rotating speed and 100% load, and S2 is carried out;
s5: establishing an actual carbon loading-measured carbon loading coordinate system, and drawing a first point, a second point and a third point on the actual carbon loading-measured carbon loading coordinate system according to the actual carbon loading and the measured carbon loading obtained under the first working condition, the second working condition and the third working condition;
s6: fitting a straight line according to the first point, the second point and the third point;
s7: the correction coefficient MSS is the reciprocal of the slope of the straight line multiplied by M exh X T/ρ, obtaining a correction coefficient MSS by the straight line;
wherein: m is M exh Mass flow for engine exhaust; t is the target time; ρ is the engine exhaust density;
s8: calculating a target time T required to load a target carbon load M1 in the particle trap (3) according to the formulas t=m1×mss/0.001+Δt and Δt=m1/0.05+100;
wherein: m1 is the target carbon loading; t is the target time; MSS is correction coefficient; delta T is the load compensation time;
s9: and when the engine (1) runs for the target time T under the working condition of 3000r/min and 100% load, the carbon loading in the two particle traps (3) is the target carbon loading M1.
2. The rapid and accurate carbon accumulating method of a particle catcher according to claim 1, further comprising an electric dynamometer (5), wherein the electric dynamometer (5) is in transmission connection with the engine (1).
3. The rapid accurate carbon accumulating method of a particle catcher according to claim 2, further comprising a controller (6), wherein the controller (6) is electrically connected with the electric dynamometer (5).
4. The rapid and accurate soot accumulation method of a particle catcher as claimed in claim 1, further comprising a fuel injection controller (7), said fuel injection controller (7) being electrically connected with a fuel injector (11) of said engine (1).
5. The rapid and accurate carbon accumulating method of the particle catcher according to claim 1, wherein the engine (1) adopts a V-shaped 6-cylinder direct injection gasoline engine.
6. The rapid and accurate carbon accumulating method of the particle catcher according to claim 1, characterized in that in S9, the engine (1) is operated for a certain time under the working condition of 3000r/min and 100% load, and after the particle mass measured by the particle measuring instrument (4) reaches more than 1000ug/S, the particle catcher (3) is installed on the exhaust pipe (2), and the engine (1) is driven to operate for a target time T.
7. The rapid accurate carbon accumulating method of a particle trap according to claim 1, characterized in that the internal stability of the particle trap (3) is ensured not to exceed 800 ℃ when the engine (1) is operated under the first, the second and the third working conditions.
8. The rapid and accurate carbon accumulating method of the particle catcher according to claim 1, wherein the carbon accumulating device of the particle catcher (3) further comprises a fuel injection controller (7), and the fuel injection controller (7) controls the fuel injection quantity, the fuel injection time and the fuel injection pressure of a fuel injector (11) of the engine (1).
9. The method for rapid and accurate carbon deposition of a particle trap according to claim 1, wherein the first rotational speed is 1500r/min, the second rotational speed is 3000r/min, and the third rotational speed is 4500r/min.
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