Filter element application life test method and system

Abstract

The invention discloses a filter element application life test method and system, and belongs to the technical field of automobile air inlet systems. The method comprises the following steps: simulating an actual environment by adopting a step-by-step activity mode; the step-by-step moving mode comprises the steps that firstly, dust is added into the air inlet system through a dust sprayer, and then water is added through a water sprayer; or water is added through the water sprayer, and then dust is added through the dust sprayer; the dust holding capacity of the filter element in different environments is measured, and the comprehensive dust holding capacity is calculated; calculating the service life of the filter element according to the comprehensive dust holding capacity and the environment dust concentration. According to the invention, the dust and water removal capability of the air inlet system under the condition of comprehensive application can be simulated, the guidance of the test result is strong, the development of the air inlet system can be accurately guided, and the combination of test and application is realized.

Description

Technical Field

[0001] The invention relates to the technical field of automobile air intake systems, and in particular to a filter element application life testing method and system. Background Art

[0002] In the automobile air intake system, the service life of the air filter is an important parameter. At present, the service life of the filter is mainly tested by the conventional dust holding capacity test. This test uses dry test ash for testing, but in actual applications, the impurities collected on the filter are usually a mixture of water and dust. Therefore, there is a big difference between the actual service life of the filter and the service life of the laboratory simulation test.

[0003] Dust holding capacity, also known as maintenance life, is the total amount of dust that the air filter assembly can hold when the air filter resistance rises to the termination resistance.

[0004] The existing filter element service life test mainly has the following problems:

[0005] 1. Intake system flow resistance efficiency and dust holding capacity test. This test uses standard dry dust to test the dust holding capacity of the intake system at rated flow. However, this method only measures the dust holding capacity of the intake system under ideal conditions, and cannot take into account various conditions such as air humidity differences and rainy days in actual applications. The test results do not match the actual situation. In addition, the measured dust holding capacity cannot be directly equated to the service life of the filter element.

[0006] 2. Intake system water separation test. This test simulates different amounts of rain by adjusting the water pressure to test the system's ability to separate water. However, this method only measures the intake system's ability to remove water under ideal conditions, ignoring the fact that the actual air contains impurities such as dust, so the test results are also inconsistent with the actual situation.

[0007] In summary, the existing test methods cannot fully simulate the actual application environment, resulting in a large difference between the test results and the actual use, making it difficult to provide accurate guidance for the development and optimization of the intake system. Therefore, there is an urgent need for a filter element life test system and method that can simulate the actual application environment and comprehensively consider the effects of dust and moisture. Summary of the invention

[0008] The purpose of the present invention is to provide a filter element service life test method and system to solve the problem in the prior art that there is a large difference between the filter element service life test result and the actual service life.

[0009] To achieve the above object, in a first aspect, the present invention provides a filter element application life test method, comprising the following steps:

[0010] A step-by-step activity method is used to simulate the actual environment; the step-by-step activity method includes: first adding dust to the air intake system through an ash sprayer, and then adding water through a water sprayer; or first adding water through a water sprayer, and then adding dust through an ash sprayer;

[0011] Measure the dust holding capacity of the filter element under different environments and calculate the comprehensive dust holding capacity;

[0012] The service life of the filter element is calculated based on the comprehensive dust holding capacity and factors simulating the actual environment.

[0013] Preferably, the pollution degree is divided into different levels according to the dust concentration in the environment, so that the actual environment can be simulated by adding dust of different degrees in the test.

[0014] Further preferably, the dust concentration in each cubic foot of air is divided into light pollution, moderate pollution and heavy pollution.

[0015] Further preferably, when the environmental dust concentration is 0.1-0.5 mg / cu ft, it is defined as moderate pollution; when the environmental dust concentration is less than 0.1 mg / cu ft, it is defined as light pollution; when the environmental dust concentration is greater than 0.5 mg / cu ft, it is defined as heavy pollution.

[0016] Preferably, the size of the rain is divided into different levels according to the rainfall, so that the actual environment can be simulated by adding different levels of moisture in the test.

[0017] Further preferably, the rainfall is divided into light rain, moderate rain and heavy rain according to the amount of rainfall per square meter of surface within 24 hours.

[0018] Further preferably, when the rainfall is 10 to 25 L / m 2 / 24h, defined as moderate rain; when the rainfall is less than 10L / m 2 / 24h, defined as light rain; when the rainfall is greater than 25L / m 2 / 24h, defined as heavy rain.

[0019] Further preferably, measuring the dust holding capacity of the filter element under different environments includes: measuring the dust holding capacity when no sprinkler is loaded, and measuring the dust holding capacity under different levels of rainwater environments;

[0020] When calculating the comprehensive dust holding capacity, weighted sum calculation is performed based on the measured dust holding capacity and the proportion of different weather types; the different weather types include no rain and different levels of precipitation.

[0021] Further preferably, when calculating the service life of the filter element, the elements simulating the actual environment include: the method for calculating the service life of the filter element includes first calculating the service life of the filter element under various environmental dust concentrations based on the comprehensive dust holding capacity, and then weighting and calculating the service life of the filter element based on the calculated filter element life and the proportion of different environmental dust concentrations.

[0022] Still further preferably, the dust holding capacity c is measured when no water spraying equipment is loaded; the dust holding capacity c1 is measured in a light rain environment; the dust holding capacity c2 is measured in a moderate rain environment; and the dust holding capacity c3 is measured in a heavy rain environment.

[0023] The comprehensive dust holding capacity C is calculated according to the weather proportion. The calculation formula is:

[0024] C=(c×n+c1×n1+c2×n2+c3×n3) / (n+n1+n2+n3)

[0025] Among them, C is the comprehensive dust holding capacity, n is the proportion of non-rainy days, n1 is the proportion of light rain, n2 is the proportion of moderate rain, and n3 is the proportion of heavy rain.

[0026] Further preferably, the calculation formula for the filter element life under a certain pollution degree is:

[0027] M = C × S × 1000 / (a ​​× Q), where: M is the filter life calculated under ambient dust concentration a, C is the comprehensive dust holding capacity under ambient dust concentration a, S is the driving speed, a is the ambient dust concentration, and Q is the rated intake flow. The driving speed is based on the speed collected at a fixed time period, such as the average speed for 30 days, and the rated intake flow is the calibrated value of the engine.

[0028] More preferably, the calculation formula of the filter element service life, that is, the maintenance mileage M0 is:

[0029] Among them, M k is the ambient dust concentration a k The filter life calculated below, m k is the ambient dust concentration a k Proportion.

[0030] In a second aspect, the present invention provides a filter element application life test system, comprising:

[0031] The actual environment simulation module is used to simulate different test environments; it includes: an ash sprayer, used to simulate dust environments of different concentrations; a water sprayer, used to simulate rain environments of different intensities; an air intake pipe, used to connect the ash sprayer and the water sprayer; the ash sprayer and the water sprayer are respectively provided to realize step-by-step loading of dust and water;

[0032] The plate filter chamber is used to install the filter element to be tested and is located at the rear end of the actual environment simulation module;

[0033] Air flow meter, used to measure the rated intake air flow;

[0034] The vacuum pump provides power for the entire system;

[0035] A measuring unit, used to measure the dust holding capacity of the filter element under different environments simulated by the actual environment simulation module;

[0036] The calculation unit calculates the comprehensive dust holding capacity according to the data of the measuring unit, and calculates the service life of the filter element according to the comprehensive dust holding capacity, environmental dust concentration, driving speed and rated intake air flow.

[0037] Preferably, the pollution degree is divided into different levels according to the environmental dust concentration, and the dust sprayer in the test adds different levels of dust according to the test requirements to simulate the actual environment; the rain size is divided into different levels according to the rainfall, and the water sprayer in the test simulates the actual environment by adding different levels of water.

[0038] Further preferably, the data of the measuring unit include: the dust holding capacity when the sprinkler is not loaded and the dust holding capacity in different levels of rainwater environment.

[0039] Still further preferably, when calculating the comprehensive dust holding capacity, the calculation unit performs weighted calculation according to the measured dust holding capacity and the proportion of different weather types.

[0040] The beneficial effects of the present invention include:

[0041] It can simulate the comprehensive dust holding capacity and drainage capacity of the air intake system in different dust concentration environments and different rain environments, which is closer to the actual application environment. By combining the effects of dust and moisture on the filter element, it can more accurately simulate the actual application environment and improve the accuracy and reliability of the test results.

[0042] The test was conducted in a step-by-step manner, which avoided the problem of water and dust mixing to form mud and affecting the test.

[0043] A filter element application life verification model has been established, which can deduce the filter element service life according to actual working conditions, or reversely infer the filter element dust holding capacity requirements based on maintenance mileage requirements, providing accurate guidance for the development and optimization of the intake system.

[0044] By monitoring the rainfall and wind data in the test area, collecting the driving methods of typical models, and using the test data of the intake air flow, we can determine the vehicle driving distance as the standard and the average flow as the basis for classification. The test data and algorithm can realize the calculation of the concentration value of the pollutant discharged by the filter element. Based on this life data, a reasonable dust removal strategy can be formulated, and the filter element emission capacity of the intake system can be reasonably allocated to reduce the impact of bad weather on the service life of the filter element, reduce the frequency of customer maintenance of the filter element, increase the service life of the filter element, reduce the actual driving air resistance value, and use advanced arithmetic means to use the route of the vehicle and the air state parameters of the regional location to achieve dust removal in different life segments, achieve scientific dust removal, and improve the performance of the whole vehicle and the service life of the filter. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] In order to more clearly illustrate the technical solutions of the embodiments disclosed in the present invention, the drawings of the embodiments will be briefly introduced below. These drawings are only used for illustrative purposes and are not intended to limit the protection scope of the present invention.

[0046] Figure 1 It is a structural schematic diagram of a filter element application life test system provided by an embodiment of the present invention;

[0047] Figure 2 It is a schematic diagram of the steps of a filter element application life test method provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0048] The technical solution of the present invention (including the preferred technical solution) is further described in detail below by means of the accompanying drawings and by listing some optional embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] Example 1

[0050] like Figure 2 As shown, the filter element application life test method provided in this embodiment includes the following steps:

[0051] A step-by-step activity method is used to simulate the actual environment; the step-by-step activity method includes: first adding dust to the intake system through the soot sprayer 1, and then adding water through the water sprayer 2; or first adding water through the water sprayer 2, and then adding dust through the soot sprayer 1.

[0052] Preferably, the simulating the actual environment includes: dividing the pollution degree into different levels according to the environmental dust concentration, so as to simulate the actual environment by adding dust of different degrees in the test.

[0053] Preferably, the simulation of the actual environment includes: dividing the size of rain into different levels according to the rainfall, so as to simulate the actual environment by adding different degrees of moisture in the test.

[0054] In some optional embodiments of the present invention, the dust concentration in each cubic foot of air is divided into light pollution, medium pollution and heavy pollution.

[0055] In some optional embodiments of the present invention, when the environmental dust concentration is 0.1-0.5 mg / cu ft, it is defined as moderate pollution; when the environmental dust concentration is less than 0.1 mg / cu ft, it is defined as light pollution; when the environmental dust concentration is greater than 0.5 mg / cu ft, it is defined as heavy pollution.

[0056] Preferably, light pollution: 0.01 mg / cu ft; moderate pollution: 0.1-0.5 mg / cu ft; severe pollution: 1.0-10 mg / cu ft.

[0057] In some optional embodiments of the present invention, rainfall per square meter of surface within 24 hours is divided into light rain, moderate rain and heavy rain.

[0058] In some optional embodiments of the present invention, when the rainfall is 10-25 L / m 2 / 24h, defined as moderate rain; when the rainfall is less than 10L / m 2 / 24h, defined as light rain; when the rainfall is greater than 25L / m 2 / 24h, defined as heavy rain.

[0059] Preferably, light rain: 10L / m 2 / 24h; moderate rain: 10~25L / m 2 / 24h; Heavy rain: >25L / m 2 / 24h.

[0060] Measure the dust holding capacity of the filter element under different environments and calculate the comprehensive dust holding capacity.

[0061] In some optional embodiments of the present invention, measuring the dust holding capacity of the filter element under different environments includes: measuring the dust holding capacity c when the sprinkler is not loaded, and measuring the dust holding capacity under different levels of rainwater environments.

[0062] Preferably, the dust holding capacity c1 is measured in a light rain environment; the dust holding capacity c2 is measured in a moderate rain environment; and the dust holding capacity c3 is measured in a heavy rain environment.

[0063] In some optional embodiments of the present invention, when calculating the comprehensive dust holding capacity, a weighted sum calculation is performed based on the measured dust holding capacity and the proportion of different weather types.

[0064] In each test, by monitoring the reading of the pressure measuring device 6, when the pressure difference on both sides of the filter element reaches the preset end pressure, the dust holding capacity at this time is recorded.

[0065] Preferably, according to the weather statistical data of the actual application area, the proportion of various weather in a year is determined: no rain accounts for n, light rain accounts for n1, moderate rain accounts for n2, and heavy rain accounts for n3, wherein n+n1+n2+n3=100%; the bench simulation duration simulates the real environment according to the proportion of the weather proportion;

[0066] Calculate the comprehensive dust holding capacity C:

[0067] C=(c×n+c1×n1+c2×n2+c3×n3) / (n+n1+n2+n3).

[0068] The service life of the filter element is calculated based on the comprehensive dust holding capacity and factors simulating the actual environment.

[0069] The method for calculating the service life of the filter element includes first calculating the filter element life under various environmental dust concentrations based on the comprehensive dust holding capacity, and then weighting and calculating the calculated filter element life and the proportion of different environmental dust concentrations to obtain the service life of the filter element.

[0070] The calculation formula for the filter element life under a certain pollution situation is:

[0071] M = C × S × 1000 / (a ​​× Q)

[0072] Among them, M is the filter life calculated under the ambient dust concentration a, C is the comprehensive dust holding capacity under the ambient dust concentration a, S is the driving speed, a is the ambient dust concentration, and Q is the rated intake flow rate. The driving speed is based on the speed collected during a fixed period of time, such as the average speed for 30 days, or it can be the average speed within the simulated actual environmental time range, such as the average speed in a year based on the proportion of various weather conditions in a year as mentioned above. The rated intake flow rate is the calibrated value of the engine.

[0073] The calculation formula for the service life of the filter element, that is, the maintenance mileage M0, is:

[0074] Among them, M k is the ambient dust concentration a k The filter life calculated below, m k is the ambient dust concentration a k Proportion.

[0075] Example 2

[0076] This embodiment provides a filter element application life test system, including:

[0077] The actual environment simulation module is used to simulate different test environments; it includes: an ash sprayer 1, used to simulate dust environments of different concentrations; a water sprayer 2, used to simulate rain environments of different intensities; an air intake pipe 3, used to connect the ash sprayer 1 and the water sprayer 2; the ash sprayer 1 and the water sprayer 2 are respectively set to realize step-by-step loading of dust and water;

[0078] The plate filter chamber 4 is used to install the filter element to be tested and is located at the rear end of the actual environment simulation module;

[0079] An air flow meter 8, used for measuring a rated intake air flow;

[0080] The air pump 10 provides power for the whole system;

[0081] A measuring unit, used to measure the dust holding capacity of the filter element under different environments simulated by the actual environment simulation module;

[0082] The calculation unit calculates the comprehensive dust holding capacity according to the data of the measuring unit, and calculates the service life of the filter element according to the comprehensive dust holding capacity, environmental dust concentration, driving speed and rated intake air flow.

[0083] Preferably, the pollution degree is divided into different levels according to the environmental dust concentration, and the dust sprayer in the test adds different levels of dust according to the test requirements to simulate the actual environment; the rain size is divided into different levels according to the rainfall, and the water sprayer in the test simulates the actual environment by adding different levels of water.

[0084] Further preferably, the data of the measuring unit include: the dust holding capacity when the sprinkler is not loaded and the dust holding capacity in different levels of rainwater environment.

[0085] Still further preferably, when calculating the comprehensive dust holding capacity, the calculation unit performs weighted calculation according to the measured dust holding capacity and the proportion of different weather types.

[0086] Example 3

[0087] like Figure 1 As shown, the filter element application life test system provided in this embodiment includes: an ash sprayer 1, a water sprayer 2, an air inlet pipe 3, a plate filter chamber 4, an air outlet 5, a pressure measuring device 6, an absolute filter 7, an air flow meter 8, an air flow meter control device 9 and an exhaust fan 10.

[0088] The dust sprayer 1 is used to simulate dust environments of different concentrations. The dust concentration can be adjusted to simulate different environments such as light pollution: 0.01 mg / cu ft, medium pollution: 0.1-0.5 mg / cu ft and heavy pollution: 1.0-10 mg / cu ft.

[0089] Sprinkler 2 is used to simulate rain environments of different intensities. The water volume can be adjusted to simulate light rain: 10L / m 2 / 24h, moderate rain: 10~25L / m 2 / 24h and heavy rain:>25L / m 2 / 24h and other different situations.

[0090] The air inlet pipe 3 is connected to the dust sprayer 1 and the water sprayer 2, and is used to transport the simulated dust and water mixture to the filter element to be tested.

[0091] The plate filter chamber 4 is used to install the filter element to be tested, and is the core component of the test.

[0092] The gas outlet 5 is located at the outlet of the plate filter chamber 4 and is used to discharge the gas filtered by the filter element.

[0093] The pressure measuring device 6 is installed on the plate filter chamber 4 and is used to monitor the pressure difference on both sides of the filter element to determine the blockage degree of the filter element.

[0094] The absolute filter 7 is installed after the gas outlet 5 to further filter the gas and ensure the cleanliness of the exhaust gas.

[0095] The air flow meter 8 is used to measure the rated intake air flow.

[0096] The air flow meter control device 9 is used to adjust and control the gas flow to ensure the stability of the air flow during the test and the consistency of the test conditions.

[0097] The vacuum pump 10 provides power for the entire system and can be set to different flow values ​​according to actual needs to generate the airflow required for the test.

[0098] In this embodiment, the ash sprayer 1 and the water sprayer 2 are set separately, so that dust and water can be loaded step by step. This design avoids the problem that water and dust are directly mixed to form mud and cannot be tested. During the test, dust can be loaded through the ash sprayer 1 first, and then water can be loaded through the water sprayer 2, or vice versa, water can be loaded first and then dust can be loaded, so as to simulate different actual environmental conditions.

[0099] The filter element application life test method and system of the present invention provide a more accurate and reliable filter element life test method by simulating the dust and moisture conditions in the actual application environment. This method can not only be used to evaluate the performance of existing filter elements, but also guide the development and optimization process of new filter elements. By accurately predicting the actual service life of the filter element, it can help vehicle manufacturers and users to formulate more reasonable maintenance plans and improve the efficiency and economy of vehicle use.

[0100] Example 4

[0101] In this embodiment, the service life of the filter element under different pollution levels and rainfall conditions is tested, and the service life of the filter element is obtained through weighted calculation.

[0102] 1. Experimental equipment and settings:

[0103] The dust blower was used to set different dust contamination levels: light contamination (0.01 mg / cu ft), medium contamination (0.1 mg / cu ft) and heavy contamination (1.0 mg / cu ft).

[0104] The sprinklers are used to simulate different rainfall intensities: light rain (10L / m 2 / 24h), moderate rain (15L / m 2 / 24h) and heavy rain (30L / m 2 / 24h).

[0105] The percentage of weather under each pollution level simulated by the bench:

[0106] Light rain: 25%, moderate rain: 15%, heavy rain: 10%, no rain: 50%.

[0107] 2. Test steps:

[0108] Step 1: Test in a lightly polluted environment (0.01 mg / cu ft).

[0109] Simulate different rainfall conditions in turn:

[0110] Operate in rainless conditions and record the dust holding capacity c of the filter element.

[0111] Simulate light rain conditions and measure the dust holding capacity c1.

[0112] Simulate moderate rain conditions and measure the dust holding capacity c2.

[0113] Simulate heavy rain conditions and measure the dust holding capacity c3.

[0114] The measured dust holding capacity data are: c=3.0g, c1=2.0g, c2=1.5g, c3=1.0g.

[0115] According to the weather proportion, use the formula:

[0116] C=(c×n+c1×n1+c2×n2+c3×n3) / (n+n1+n2+n3)

[0117] Calculate the comprehensive dust holding capacity under mild pollution:

[0118] C1=2.325g

[0119] Step 2: Based on the comprehensive dust holding capacity C1 = 2.325g, use the formula:

[0120] M = C × S × 1000 / (a ​​× Q)

[0121] Calculate filter life under light contamination:

[0122] Wherein, vehicle speed S = 60 km / h, dust concentration a1 = 0.01 mg / cu ft, rated air flow Q = 200 m 3 / h.

[0123] M1=2.325×60×1000 / (0.01×200)=69750km

[0124] Step 3: Testing in moderate and severe pollution environments

[0125] Repeat the above steps to test the filter life under moderate pollution (0.1mg / cu ft) and heavy pollution (1.0mg / cu ft).

[0126] The measured dust holding capacity data in moderately polluted and heavily polluted environments are as follows:

[0127] Moderate pollution: c=2.5g, c1=1.8g, c2=1.2g, c3=0.9g.

[0128] Severe pollution: c=1.5g, c1=1.0g, c2=0.6g, c3=0.4g.

[0129] The calculation results are:

[0130] The comprehensive dust holding capacity in a moderately polluted environment is C2 = 1.97g;

[0131] The comprehensive dust holding capacity in a heavily polluted environment is C3 = 1.13g;

[0132] The filter life under moderate pollution is M2 = 1.97 × 60 × 1000 / (0.01 × 200) = 59100 km;

[0133] The filter element life under severe pollution is M3=1.13×60×1000 / (0.01×200)=33900km.

[0134] Weighted calculation of filter element application life:

[0135] According to the proportion of each polluted environment: light pollution accounts for m1=70%, moderate pollution accounts for m2=20%, and severe pollution accounts for m3=10%.

[0136] According to the formula Calculate the service life of the filter element, that is, the maintenance mileage M0, M0 = (M1×m1+M2×m2+M3×m3) / (m1+m2+m3)

[0137] M0=(69750×70%+59100×20%+33900×10%) / (70%+20%+10%)=64035km

[0138] Therefore, the comprehensive service life of the filter element is 64035 kilometers.

[0139] Those skilled in the art will readily appreciate that the above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, combinations, replacements, improvements, etc. made within the spirit and principles of the present invention are included within the protection scope of the present invention.

Claims

1. A filter element application life test method, characterized in that: include: Use a step-by-step activity approach to simulate the actual environment; The step-by-step activity method includes: first adding dust to the air intake system through a dust sprayer, and then adding water through a water sprayer; Or add water first through a water sprayer, then add dust through an ash sprayer; Measure the dust holding capacity of the filter element under different environments and calculate the comprehensive dust holding capacity; Calculate the service life of the filter element based on the comprehensive dust holding capacity and ambient dust concentration.

2. The filter element application life test method according to claim 1, characterized in that: The simulating the actual environment includes: dividing the pollution degree into different levels according to the environmental dust concentration, so as to simulate the actual environment by adding dust of different degrees in the test.

3. The filter element application life test method according to claim 1 or 2, characterized in that: The simulation of the actual environment includes: dividing the size of rain into different levels according to the rainfall, so as to simulate the actual environment by adding different levels of moisture in the test.

4. The filter element service life test method according to claim 3, characterized in that: Measuring the dust holding capacity of the filter element under different environments includes: measuring the dust holding capacity without loading the sprinkler, and measuring the dust holding capacity under different levels of rainwater environment; The method for calculating the comprehensive dust holding capacity includes weighting and calculating according to the measured dust holding capacity and the proportion of different weather types; the different weather types include no rain and different levels of rainfall.

5. The filter element application life test method according to claim 1, 2 or 4, characterized in that: The method for calculating the service life of the filter element includes first calculating the filter element life under various environmental dust concentrations based on the comprehensive dust holding capacity, and then weighting and calculating the calculated filter element life and the proportion of different environmental dust concentrations to obtain the service life of the filter element.

6. The filter element service life test method according to claim 5, characterized in that: The filter element life calculation formula is: M = C × S × 1000 / (a ​​× Q), where: C is the comprehensive dust holding capacity, S is the vehicle speed, a is the ambient dust concentration, and Q is the rated intake air flow.

7. A filter element application life test system using the filter element application life test method according to any one of claims 1 to 6, characterized in that: include: The actual environment simulation module is used to simulate different test environments; it includes: an ash sprayer, used to simulate dust environments of different concentrations; a water sprayer, used to simulate rain environments of different intensities; an air intake pipe, used to connect the ash sprayer and the water sprayer; the ash sprayer and the water sprayer are respectively provided to realize step-by-step loading of dust and water; The plate filter chamber is used to install the filter element to be tested and is located at the rear end of the actual environment simulation module; An air flow meter, used to measure the rated intake air flow, is located at the rear end of the plate filter chamber; The vacuum pump provides power for the entire system; A measuring unit, used to measure the dust holding capacity of the filter element under different environments simulated by the actual environment simulation module; The calculation unit calculates the comprehensive dust holding capacity according to the data of the measuring unit, and calculates the service life of the filter element according to the comprehensive dust holding capacity, environmental dust concentration, driving speed and rated intake air flow.

8. The filter element application life test system according to claim 7, characterized in that: The pollution degree is divided into different levels according to the dust concentration in the environment. The dust sprayer described in the test adds different levels of dust according to the test requirements to simulate the actual environment; the rain size is divided into different levels according to the rainfall. The water sprayer described in the test simulates the actual environment by adding different levels of water.

9. The filter element application life test system according to claim 8, characterized in that: The data of the measuring unit include: the dust holding capacity when the sprinkler is not loaded and the dust holding capacity in different levels of rain environment.

10. The filter element application life test system according to claim 9, characterized in that: When calculating the comprehensive dust holding capacity, the calculation unit performs weighted calculation according to the measured dust holding capacity and the proportion of different weather types.

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