CN111668517B - Intelligent reminding method for air filter replacement of hydrogen engine - Google Patents
Intelligent reminding method for air filter replacement of hydrogen engine Download PDFInfo
- Publication number
- CN111668517B CN111668517B CN202010329987.7A CN202010329987A CN111668517B CN 111668517 B CN111668517 B CN 111668517B CN 202010329987 A CN202010329987 A CN 202010329987A CN 111668517 B CN111668517 B CN 111668517B
- Authority
- CN
- China
- Prior art keywords
- air
- filter element
- control unit
- pressure drop
- replacement
- 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.)
- Active
Links
- 229910052739 hydrogen Inorganic materials 0.000 title claims abstract description 42
- 239000001257 hydrogen Substances 0.000 title claims abstract description 42
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 31
- 238000001179 sorption measurement Methods 0.000 claims abstract description 42
- 238000012512 characterization method Methods 0.000 claims abstract description 39
- 239000000446 fuel Substances 0.000 claims abstract description 39
- 239000007789 gas Substances 0.000 claims abstract description 34
- 238000001914 filtration Methods 0.000 claims abstract description 28
- 238000004364 calculation method Methods 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000012360 testing method Methods 0.000 claims description 8
- 238000010248 power generation Methods 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 6
- 238000012544 monitoring process Methods 0.000 claims description 6
- 238000009825 accumulation Methods 0.000 claims description 5
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000009434 installation Methods 0.000 claims description 3
- 230000008054 signal transmission Effects 0.000 claims description 3
- 230000001960 triggered effect Effects 0.000 claims description 3
- 230000007246 mechanism Effects 0.000 abstract description 2
- 239000002699 waste material Substances 0.000 abstract description 2
- 230000002028 premature Effects 0.000 abstract 1
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 239000000356 contaminant Substances 0.000 description 3
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000005984 hydrogenation reaction Methods 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003344 environmental pollutant Substances 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 231100000719 pollutant Toxicity 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000012855 volatile organic compound Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04223—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids during start-up or shut-down; Depolarisation or activation, e.g. purging; Means for short-circuiting defective fuel cells
- H01M8/04231—Purging of the reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04089—Arrangements for control of reactant parameters, e.g. pressure or concentration of gaseous reactants
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04082—Arrangements for control of reactant parameters, e.g. pressure or concentration
- H01M8/04201—Reactant storage and supply, e.g. means for feeding, pipes
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
- H01M8/00—Fuel cells; Manufacture thereof
- H01M8/04—Auxiliary arrangements, e.g. for control of pressure or for circulation of fluids
- H01M8/04298—Processes for controlling fuel cells or fuel cell systems
- H01M8/04313—Processes for controlling fuel cells or fuel cell systems characterised by the detection or assessment of variables; characterised by the detection or assessment of failure or abnormal function
- H01M8/04664—Failure or abnormal function
- H01M8/04686—Failure or abnormal function of auxiliary devices, e.g. batteries, capacitors
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/30—Hydrogen technology
- Y02E60/50—Fuel cells
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- General Chemical & Material Sciences (AREA)
- Fuel Cell (AREA)
Abstract
The application discloses an intelligent reminding method for air filtration replacement of a hydrogen engine, which comprises a device main body and a control system, wherein the device main body is connected with the control system; according to the method, an air filter element service life judging mechanism with three characterization quantities of adsorption capacity, pressure drop and air flow is established to accurately judge whether the filter element needs to be reminded of replacement. The application can monitor the filtration pressure drop and the air flow through the pressure sensor and the flow sensor; the total quantity of sucked air is recorded by a storage unit, and the total mass of the adsorbed harmful gas is calculated by a control unit; the control unit can acquire the flow and the corresponding filter pressure drop of the fuel cell at different working points; the control system may read the air flow at a certain power point and compare it to a set minimum allowable air flow at that power point. According to the application, the filter element of the air filter screen is replaced and reminded through the three characterization values, so that not only is the waste caused by premature filter screen replacement avoided, but also the influence of the too late filter screen replacement on the service life of the fuel cell engine is avoided.
Description
Technical Field
The application relates to the technical field of hydrogen engines, in particular to the technical field of an intelligent reminding method for air filter replacement of a hydrogen engine.
Background
The hydrogen fuel cell automobile adopts the electric energy generated by the vehicle-mounted hydrogen engine as power, which is an important direction for promoting the low-carbon transformation and sustainable development in the traffic field of China; compared with the traditional gasoline vehicle, the hydrogen fuel cell vehicle has the advantages of zero emission, long one-time hydrogenation driving range, short hydrogenation time, light weight, capability of filling the battery with fuel within 5 minutes, and obvious advantages compared with the pure electric vehicle in long charging time.
Automotive air filters are commonly used to filter particulate contaminants from air; for hydrogen fuel cell automobiles, gaseous contaminants can also affect the output power, efficiency, and even lead to fuel cell failure of the hydrogen engine. For example: gaseous contaminants can lead to poisoning of platinum catalysts (SO 2, NO2, VOCs, etc.), chemical attack on the MEA (e.g., SO2, etc.), conductivity decay (metal ions such as fe3+, ca2+, na+, etc.), hydrophobicity decay (NaCl, surfactants, toluene, etc.). Therefore, hydrogen fuel cell automobiles require special air filters that can adsorb gaseous pollutants.
At present, the filter screen of the air filter screen for the automobile is usually replaced every several months by experience, and the current intelligent replacement reminding generally sets the total use time of the filter screen. However, because the power of the hydrogen engine can be changed continuously along with the whole vehicle demand, the flow of the corresponding air filtration is also changed continuously, and therefore the service life of the filter screen obtained by the existing method can only be used as a simple reference; meanwhile, the service life of the filter screen is considered to be the saturation degree of physical filtration of particles and chemical adsorption of harmful gases. Too early replacement of the filter screen would be wasteful, while too late replacement of the filter screen would even affect the life of the hydrogen engine ≡!
Disclosure of Invention
The application aims to solve the problems in the prior art, and provides an intelligent reminding method for air filter replacement of a hydrogen engine, which can realize an air filter core service life judging mechanism of three characterization quantities of adsorption capacity, pressure drop and air flow so as to accurately judge whether the filter core needs to be reminded of replacement. The control unit can calculate the total mass of the adsorbed harmful gas according to the adsorption efficiency and the local harmful gas concentration, compare the total mass with the maximum allowable adsorption quantity and characterize the service life of the filter element from the adsorption capacity; the control system can acquire the flow and corresponding filter pressure drop of the fuel cell at different working points, and judges the maximum allowable pressure drop of the system by setting the pressure drop values of the different working points; the control system can read the air flow of a certain power point, compare the air flow with the minimum allowable air flow of the power point, send out a prompt when the measured air flow is smaller than a set value, and send out a prompt for replacing the filter element immediately after the blockage of the air inlet pipeline is eliminated.
In order to achieve the above purpose, the application provides an intelligent reminding method for air filtration replacement of a hydrogen engine, wherein the hydrogen engine comprises a device main body and a control system, the device main body comprises a fuel cell stack, a hydrogen supply system, a tail exhaust pipe, an air system and a cooling system, and the control system comprises a control unit, a storage unit and an instrument panel display; the fuel cell stack is sequentially connected with the air compressor and the air filter through air pipelines, the outlet pressure sensor and the flow sensor are arranged on an air pipeline between the air compressor and the air filter, and the inlet pressure sensor is arranged on an air pipeline at the inlet end of the air filter; the hydrogen supply system is connected with the fuel cell stack through a pipeline; the cooling system comprises a radiator which is connected with the fuel cell stack through a cooling pipeline; the fuel cell stack is connected into the tail calandria through the tail calandria pipeline; the control unit is electrically connected with the fuel cell stack, the inlet pressure sensor, the outlet pressure sensor, the flow sensor, the storage unit and the instrument panel display; the inlet pressure sensor and the outlet pressure sensor are used for monitoring filtration pressure drop, and the flow sensor is used for monitoring air flow;
the intelligent reminding method for the air filter replacement of the hydrogen engine comprises the following steps: .
Step one: the inlet pressure sensor and the outlet pressure sensor acquire pressure drop parameters generated by air filtration;
step two: the flow sensor acquires an air flow parameter, wherein the air flow parameter is q;
step three: the control unit obtains the working state and parameters of the fuel cell stack, wherein the parameters of the fuel cell stack comprise working power;
step four: the control unit sets a threshold value of a characteristic quantity, wherein the characteristic quantity comprises adsorption capacity, filtration pressure drop and air flow;
step five: the storage unit stores the parameters of the first step to the fourth step, and stores accumulated values input by the control unit, wherein the accumulated values comprise total air flow and total power generation;
step six: the control unit judges the service life of the filter element according to the acquired parameters and the characterization quantity;
step seven: comparing the measured and calculated characterization quantity with a set threshold value, judging whether to carry out a first-stage filter element replacement reminding or a second-stage filter element replacement reminding, and sending reminding contents to an instrument panel display.
Preferably, the adsorption capacity in the fourth step includes the total amount of harmful gas adsorption of the filter element, the mass of the harmful gas adsorbed, the total amount of harmful gas adsorption of the filter element is M, M is obtained through testing and calculation, M, a x M is used as a threshold value of the adsorption capacity and input into the control unit, a is a primary reminding coefficient of the adsorption capacity, a is 0,100% ], preferably, the coefficient a can take 90% as a preset value, and is corrected according to practical application conditions; the mass m=Mair×ρ×η of the adsorbed harmful gas, wherein Mair is the total air quantity passing through the filter element, ρ is the equivalent concentration of the harmful gas in the air of the environment, and η is the adsorption efficiency of the selected filter element on the harmful gas;
the Mair acquisition method comprises the following two steps of: the control unit performs accumulation calculation on the received air flow, stores the air flow into the storage unit and invokes the accumulated total value; method 2: the control unit converts the total power generation W stored in the storage unit and using the secondary filter element through a formula Mair=C×W, wherein C is a conversion constant; the p is obtained through calculation or inquiry and is input into a control unit, for example, the p is equivalent to the concentration of SO 2; the eta is obtained through testing and is input into a control unit, for example, the test shows that the SO2 adsorption efficiency is 80%;
in the seventh step, the mass M of the adsorbed harmful gas is compared with the total mass M of the harmful gas adsorbed by the filter element, and when M is more than M, a second-stage filter element replacement reminding is triggered; when M is more than or equal to M > a, triggering a first-stage filter element replacement reminding.
Preferably, the pressure drop parameters of the first step include an air filter inlet pressure p1, an air filter outlet pressure p2, and a pressure drop Δp, where the air filter inlet pressure p1 and the air filter outlet pressure p2 are obtained by an inlet pressure sensor and an outlet pressure sensor, respectively, and the pressure drop Δp=p2-p 1;
the control unit integrates the pressure drop parameter and the flow parameter to obtain a data set delta pi@qi, wherein qi is an ith air flow parameter, and delta pi is a pressure drop corresponding to qi;
the maximum allowable pressure drop delta pmax is used as a threshold value input control unit for filtering pressure drop, and the maximum allowable pressure drop delta pmax is used as a judging threshold value for reminding of second-stage filter element replacement; setting pressure drop thresholds DeltaPSeti under different air flow rates to judge the state of the filter element, and inputting DeltaPSeti into a control unit to serve as a judging threshold value for reminding of first-stage filter element replacement.
Preferably, the first-stage filter element replacement reminding adopts cooperative characterization of adsorption capacity and filtration pressure drop; typical characterization factors of the collaborative characterization are Y=m/M+ [ delta ] pi/[ delta ] pseti, wherein M is the mass of adsorbed harmful gas, M is the total amount of harmful gas adsorption of a filter element, deltapi is the pressure drop corresponding to qi, deltapseti is a pressure drop threshold, and qi is an ith air flow parameter; when the value Y of the typical characterization factor is greater than b, triggering a first-stage filter element replacement reminding, wherein b is a judgment threshold value of the first-stage filter element replacement reminding, b is 0,200%, and preferably, the coefficient b can take 160% as an initial value and is corrected according to the actual application condition; typical characterization factors of the collaborative characterization are Y=c× (M/M) + (2-c) ×Δpi/Δpseti, where c is the characterization quantity matching coefficient, c ε [0,2].
Preferably, the control means obtains the air flow Qi required to be achieved when the data sets Qi@ Pi, qi are the operating powers Pi, and the control means sets a minimum allowable air flow threshold Qi for each of the operating powers Pi of the engine; at operating power Pi, the real-time air flow parameter Qi is compared with an air flow threshold Qi, and when Qi < Qi, a "second stage cartridge change" alert is issued.
Preferably, the storage unit stores the total filter element replacement times N, and n=0 is stored in the storage unit initially; the filter element installation department in the air cleaner is equipped with shift knob, and trigger signal when the filter element in the air cleaner changes, above-mentioned signal transmission to the control unit, and the control unit sets up the total air quantity Mair that the filter element of this time of accumulation passed through in the memory cell to zero, makes filter element total change number of times N count simultaneously: n=n+1.
The application has the beneficial effects that:
1. according to the application, the replacement period is characterized by three groups of parameters including the adsorption capacity of the filter screen, the filtration pressure drop and the air flow, and the adsorption capacity characterization is particularly suitable for hydrogen engines; meanwhile, the error is reduced through the collaborative characterization of the adsorption capacity and the filtration pressure drop, so that the hydrogen engine is better protected;
2. the application adopts two-stage reminding setting, which not only reminds a user of timely replacement preparation, but also avoids damage caused by starting the fuel cell when the filter element is required to be replaced;
3. the application simultaneously characterizes the filtration pressure drop value under each power, so that the service life evaluation of the filter element is more accurate;
4. after the filter element is replaced, the accumulated data can be set to zero, and the total replacement times can be automatically updated.
The features and advantages of the present application will be described in detail by way of example with reference to the accompanying drawings.
Drawings
FIG. 1 is a block diagram of a hydrogen engine system of the intelligent reminding method for air filter replacement of a hydrogen engine of the present application;
FIG. 2 is a schematic diagram of the configuration of a control unit and input and output signals of an intelligent reminding method for air filtration replacement of a hydrogen engine;
FIG. 3 is a flow chart of an intelligent reminding method for air filter replacement of a hydrogen engine according to the application.
In the figure: 10-fuel cell stack, 20-air filter, 21-air compressor, 22-hydrogen supply system, 23-radiator, 24-tail pipe, 31-inlet pressure sensor, 32-outlet pressure sensor, 33-flow sensor, 40-air line, 41-cooling line, 42-tail pipe, 50-control unit, 51-storage unit, 52-instrument panel display.
Detailed Description
Referring to fig. 1, 2, 3, the hydrogen engine of the present application includes an apparatus main body including a fuel cell stack 10, a hydrogen supply system 22, a tail pipe 24, an air system, and a cooling system, and a control system including a control unit 50, a storage unit 51, and a dashboard display 52; the air system comprises an air filter 20, an air compressor 21, an inlet pressure sensor 31, an outlet pressure sensor 32 and a flow sensor 33, wherein the fuel cell stack 10 is sequentially connected with the air compressor 21 and the air filter 20 through an air pipeline 40, the outlet pressure sensor 32 and the flow sensor 33 are arranged on the air pipeline 40 between the air compressor 21 and the air filter 20, and the inlet pressure sensor 31 is arranged on the air pipeline 40 at the inlet end of the air filter 20; the hydrogen supply system 22 is connected with the fuel cell stack 10 through a pipeline; the cooling system comprises a radiator 23, and the radiator 23 is connected with the fuel cell stack 10 through a cooling pipeline 41; the fuel cell stack 10 is connected into the tail stack 24 through a tail stack pipe 42; the control unit 50 is electrically connected with the fuel cell stack 10, the inlet pressure sensor 31, the outlet pressure sensor 32, the flow sensor 33, the storage unit 51 and the instrument panel display 52; the inlet pressure sensor 31 and the outlet pressure sensor 32 are used for monitoring filtration pressure drop, and the flow sensor 33 is used for monitoring air flow.
The intelligent reminding method for the air filter replacement of the hydrogen engine comprises the following steps:
step one: the inlet pressure sensor 31 and the outlet pressure sensor 32 acquire pressure drop parameters generated by air filtration;
step two: the flow sensor 33 acquires an air flow parameter, and the air flow parameter is q;
step three: the control unit 50 acquires the operating state and parameters of the fuel cell stack 10, and the parameters of the fuel cell stack 10 include the operating power;
step four: the control unit 50 sets a threshold value for the characteristic quantity including the adsorption capacity, the filtration pressure drop, the air flow rate;
step five: the storage unit 51 stores the parameters of the first to fourth steps, and stores the accumulated values input by the control unit 50, including the total air flow rate, the total power generation amount;
step six: the control unit 50 judges the service life of the filter element according to the acquired parameters through the characterization quantity;
step seven: comparing the measured and calculated characterization quantity with a set threshold value, judging whether to carry out a first-stage filter element replacement reminding or a second-stage filter element replacement reminding, and sending reminding contents to an instrument panel display.
Specifically, the adsorption capacity in the fourth step includes the total amount of harmful gas adsorption of the filter element, and the mass of the adsorbed harmful gas, where the total amount of harmful gas adsorption of the filter element is M, M is obtained by testing and calculating, M, a ×m is used as a threshold value of the adsorption capacity and input into the control unit 50, a is a primary reminding coefficient of the adsorption capacity, a e [0,100% ], preferably, the coefficient a can take 90% as a preset value, and is corrected by practical application conditions; the mass m=Mair×ρ×η of the adsorbed harmful gas, wherein Mair is the total air quantity passing through the filter element, ρ is the equivalent concentration of the harmful gas in the air of the environment, and η is the adsorption efficiency of the selected filter element on the harmful gas;
the Mair acquisition method comprises the following two steps of: the control unit 50 performs accumulation calculation on the received air flow, stores the accumulated air flow into the storage unit 51, and retrieves the accumulated total value; method 2: the control unit 50 converts the total power generation amount W using the sub-cartridge stored in the storage unit 51 by the formula Mair=c×w, and C is a conversion constant; the p is obtained through calculation or inquiry and is input into the control unit 50, for example, p is equivalent to the SO2 concentration; the eta is obtained through testing and is input into the control unit 50, for example, the test is carried out, SO that the adsorption efficiency of SO2 is 80%;
in the seventh step, the mass M of the adsorbed harmful gas is compared with the total mass M of the harmful gas adsorbed by the filter element, and when M is more than M, a second-stage filter element replacement reminding is triggered; when M is more than or equal to M > a, triggering a first-stage filter element replacement reminding.
Specifically, the pressure drop parameters in the first step include an air filter inlet pressure p1, an air filter outlet pressure p2, and a pressure drop Δp, where the air filter inlet pressure p1 and the air filter outlet pressure p2 are respectively obtained by the inlet pressure sensor 31 and the outlet pressure sensor 32, and the pressure drop Δp=p2-p 1;
the control unit 50 integrates the pressure drop parameter and the flow parameter to obtain a data set Δpi@qi, wherein qi is an ith air flow parameter, and Δpi is a pressure drop corresponding to qi;
the maximum allowable pressure drop delta pmax is used as a threshold value input control unit 50 of the filtration pressure drop, and the maximum allowable pressure drop delta pmax is used as a judgment threshold value of the second-stage filter element replacement reminding; the pressure drop threshold Δpseti at different air flows is set to determine the filter element state, and Δpseti is input to the control unit 50 as the determination threshold for the "first stage filter element replacement" reminder.
Specifically, the first-stage filter element replacement reminding adopts cooperative characterization of adsorption capacity and filtration pressure drop; typical characterization factors of the collaborative characterization are Y=m/M+ [ delta ] pi/[ delta ] pseti, wherein M is the mass of adsorbed harmful gas, M is the total amount of harmful gas adsorption of a filter element, deltapi is the pressure drop corresponding to qi, deltapseti is a pressure drop threshold, and qi is an ith air flow parameter; when the value Y of the typical characterization factor is greater than b, triggering a first-stage filter element replacement reminding, wherein b is a judgment threshold value of the first-stage filter element replacement reminding, b is 0,200%, and preferably, the coefficient b can take 160% as an initial value and is corrected according to the actual application condition; typical characterization factors of the collaborative characterization are Y=c× (M/M) + (2-c) ×Δpi/Δpseti, where c is the characterization quantity matching coefficient, c ε [0,2].
Specifically, the control unit 50 obtains the air flow Qi required to be achieved when the data sets Qi@ Pi, qi are the operating powers Pi, and the control unit 50 sets a minimum allowable air flow threshold Qi for each of the operating powers Pi of the engine; at operating power Pi, the real-time air flow parameter Qi is compared with an air flow threshold Qi, and when Qi < Qi, a "second stage cartridge change" alert is issued.
Specifically, the storage unit 51 stores the total filter element replacement times N, and n=0 is initially stored in the storage unit; the filter element installation department in the air cleaner 20 is equipped with shift knob, and the trigger signal when the filter element in the air cleaner 20 changes, above-mentioned signal transmission to the control unit 50, and the control unit 50 sets zero the total air quantity Mair that the filter element passed this time of accumulating in the memory unit 51, makes filter element total change number of times N count simultaneously: n=n+1.
The working process of the application comprises the following steps:
the application relates to an intelligent reminding method for air filter replacement of a hydrogen engine, which is described with reference to the accompanying drawings in the working process.
According to the reminding method shown in fig. 3, the filter element is timely replaced and reminded. Acquiring pressure drop parameters generated by air filtration through an inlet pressure sensor 31 and an outlet pressure sensor 32; acquiring an air flow parameter by a flow sensor 33; acquiring the working state and parameters of the fuel cell stack 10 through the control unit 50, wherein the parameters of the fuel cell stack 10 comprise working power; setting, by the control unit 50, a threshold value of a characteristic quantity including adsorption capacity, filtration pressure drop, air flow rate; the above-mentioned parameters are stored by the storage unit 51, and the accumulated values input by the control unit 50 are stored, including the total air flow rate, the total power generation amount; the service life of the filter element is judged by the characterization quantity according to the acquired parameters through the control unit 50. In this time, the judgment and early warning can be performed according to the characterization quantity, wherein the characterization quantity has the adsorption capacity, the filtration pressure drop and the air flow mentioned above, and can also be a cooperative characterization consisting of the adsorption capacity and the filtration pressure drop, and the method is not limited to the cooperative mode; the calculated characterization quantity is compared with a set threshold value through realizing the threshold value obtained through calculation, measurement or experiments, whether the first-stage filter element replacement reminding or the second-stage filter element replacement reminding is carried out is judged, and reminding contents are sent to an instrument panel display. Through the acquisition and calculation comparison of the characterization quantity, the filter element judgment can be made more accurately. The first-stage filter element replacement reminding is slightly weaker, and means that the filter element is ready to be replaced, and the filter element is allowed to be replaced or not replaced first; the second-stage filter element replacement reminding is strong, and the filter element needs to be forcedly replaced in order to ensure that the hydrogen engine works well.
According to the application, the filter element replacement reminding of the air filter screen is carried out through three characterization values of adsorption capacity, pressure drop and air flow, so that the waste caused by early filter screen replacement is avoided, and the influence of the too late filter screen replacement on the service life of the fuel cell engine is avoided.
The above embodiments are illustrative of the present application, and not limiting, and any simple modifications of the present application fall within the scope of the present application.
Claims (6)
1. An intelligent reminding method for air filter replacement of a hydrogen engine is characterized by comprising the following steps of: the hydrogen engine comprises a device main body and a control system, wherein the device main body comprises a fuel cell stack (10), a hydrogen supply system (22), a tail exhaust pipe (24), an air system and a cooling system, the control system comprises a control unit (50), a storage unit (51) and an instrument panel display (52), and the working state and parameters of the fuel cell stack (10) are acquired through the control unit (50); the air system comprises an air filter (20), an air compressor (21), an inlet pressure sensor (31), an outlet pressure sensor (32) and a flow sensor (33), wherein the fuel cell stack (10) is sequentially connected with the air compressor (21) and the air filter (20) through an air pipeline (40), the outlet pressure sensor (32) and the flow sensor (33) are arranged on the air pipeline (40) between the air compressor (21) and the air filter (20), and the inlet pressure sensor (31) is arranged on the air pipeline (40) at the inlet end of the air filter (20); the hydrogen supply system (22) is connected with the fuel cell stack (10) through a pipeline; the cooling system comprises a radiator (23), and the radiator (23) is connected with the fuel cell stack (10) through a cooling pipeline (41); the fuel electric pile (10) is connected into the tail drain pipe (24) through the tail drain pipe (42); the control unit (50) is electrically connected with the fuel cell stack (10), the inlet pressure sensor (31), the outlet pressure sensor (32), the flow sensor (33), the storage unit (51) and the instrument panel display (52); the inlet pressure sensor (31) and the outlet pressure sensor (32) are used for monitoring filtration pressure drop, and the flow sensor (33) is used for monitoring air flow;
the intelligent reminding method for the air filter replacement of the hydrogen engine comprises the following steps:
step one: the inlet pressure sensor (31) and the outlet pressure sensor (32) acquire pressure drop parameters generated by air filtration;
step two: the flow sensor (33) acquires an air flow parameter, and the air flow parameter is q;
step three: the control unit (50) acquires the working state and parameters of the fuel cell stack (10), wherein the parameters of the fuel cell stack (10) comprise working power;
step four: a control unit (50) sets a threshold value of a characteristic quantity, wherein the characteristic quantity comprises adsorption capacity, filtration pressure drop and air flow;
step five: the storage unit (51) stores the parameters of the first to fourth steps and stores the accumulated values input by the control unit (50), wherein the accumulated values comprise total air flow and total power generation;
step six: the control unit (50) judges the service life of the filter element according to the acquired parameters through the characterization quantity;
step seven: comparing the measured and calculated characterization quantity with a set threshold value, judging whether to carry out a first-stage filter element replacement reminding or a second-stage filter element replacement reminding, and sending reminding contents to an instrument panel display.
2. The intelligent reminding method for air filter replacement of a hydrogen engine according to claim 1, wherein: the adsorption capacity in the fourth step comprises the total adsorption quantity of harmful gas of the filter element and the mass of the adsorbed harmful gas, wherein the total adsorption quantity of the harmful gas of the filter element is M, M is obtained through testing and calculation, M, a X M is used as a threshold value of the adsorption capacity and is input into a control unit (50), a is a primary reminding coefficient of the adsorption capacity, and a is E [0,100% ]; the mass m=Mair×ρ×η of the adsorbed harmful gas, wherein Mair is the total air quantity passing through the filter element, ρ is the equivalent concentration of the harmful gas in the air of the environment, and η is the adsorption efficiency of the selected filter element on the harmful gas;
the Mair acquisition method comprises the following two steps of: the control unit (50) performs accumulation calculation on the received air flow, stores the air flow into the storage unit (51) and invokes the accumulated total value; method 2: the control unit (50) converts the total power generation W stored in the storage unit (51) and using the secondary filter element through the formula Mair=C×W, wherein C is a conversion constant; the rho is obtained through calculation or inquiry and is input into a control unit (50); the eta is acquired through testing and is input into a control unit (50);
in the seventh step, the mass M of the adsorbed harmful gas is compared with the total mass M of the harmful gas adsorbed by the filter element, and when M is more than M, a second-stage filter element replacement reminding is triggered; when M is more than or equal to M > a, triggering a first-stage filter element replacement reminding.
3. The intelligent reminding method for air filter replacement of a hydrogen engine according to claim 1, wherein: the pressure drop parameters of the first step comprise an air filter inlet pressure p1, an air filter outlet pressure p2 and a pressure drop delta p, wherein the air filter inlet pressure p1 and the air filter outlet pressure p2 are respectively obtained by an inlet pressure sensor (31) and an outlet pressure sensor (32), and the pressure drop delta p=p2-p 1;
the control unit (50) integrates the pressure drop parameter and the flow parameter to obtain a data set delta pi@qi, wherein qi is an ith air flow parameter, and delta pi is a pressure drop corresponding to qi;
the maximum allowable pressure drop delta pmax is used as a threshold value input control unit (50) of the filtration pressure drop, and the maximum allowable pressure drop delta pmax is used as a judgment threshold value of the second-stage filter element replacement reminding; pressure drop thresholds DeltaPSeti under different air flow rates are set to judge the filter element state, and DeltaPSeti is input into a control unit (50) to be used as a judging threshold value of a first-stage filter element replacement reminding.
4. The intelligent reminding method for air filter replacement of a hydrogen engine according to claim 1, wherein: the first-stage filter element replacement reminding adopts cooperative characterization of adsorption capacity and filtration pressure drop; typical characterization factors of the collaborative characterization are Y=m/M+ [ delta ] pi/[ delta ] pseti, wherein M is the mass of adsorbed harmful gas, M is the total amount of harmful gas adsorption of a filter element, deltapi is the pressure drop corresponding to qi, deltapseti is a pressure drop threshold, and qi is an ith air flow parameter; triggering a first-stage filter element replacement reminding when the value Y of the typical characterization factor is more than b, wherein b is a judgment threshold value of the first-stage filter element replacement reminding, and b is [0,200% ]; typical characterization factors of the collaborative characterization are Y=c× (M/M) + (2-c) ×Δpi/Δpseti, where c is the characterization quantity matching coefficient, c ε [0,2].
5. The intelligent reminding method for air filter replacement of a hydrogen engine according to claim 1, wherein: the control unit (50) obtains the air flow Qi required to be achieved when the data sets Qi@ Pi and Qi are working powers Pi, and the control unit (50) sets a minimum allowable air flow threshold Qi of each working power Pi of the engine; at operating power Pi, the real-time air flow parameter Qi is compared with an air flow threshold Qi, and when Qi < Qi, a "second stage cartridge change" alert is issued.
6. The intelligent reminding method for air filter replacement of a hydrogen engine according to claim 1, wherein: the storage unit (51) stores the total filter element replacement times N, and N=0 is stored in the storage unit in the initial stage; the filter element installation department in air cleaner (20) is equipped with shift knob, and trigger signal when the filter element in air cleaner (20) is changed, above-mentioned signal transmission to control unit (50), and control unit (50) are with the total air quantity Mair that this filter element of accumulation in storage unit (51) passed through set to zero, make filter element total change number of times N count simultaneously: n=n+1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329987.7A CN111668517B (en) | 2020-04-24 | 2020-04-24 | Intelligent reminding method for air filter replacement of hydrogen engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010329987.7A CN111668517B (en) | 2020-04-24 | 2020-04-24 | Intelligent reminding method for air filter replacement of hydrogen engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111668517A CN111668517A (en) | 2020-09-15 |
| CN111668517B true CN111668517B (en) | 2023-11-10 |
Family
ID=72382847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010329987.7A Active CN111668517B (en) | 2020-04-24 | 2020-04-24 | Intelligent reminding method for air filter replacement of hydrogen engine |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111668517B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114976126A (en) * | 2021-02-22 | 2022-08-30 | 北京亿华通科技股份有限公司 | Air filter element pollution control method and system, fuel cell system and vehicle |
| CN113521935B (en) * | 2021-07-26 | 2024-09-27 | 三一汽车制造有限公司 | Air filtration system, fuel cell, vehicle, and control method |
| CN113740228A (en) * | 2021-08-30 | 2021-12-03 | 上海弗列加滤清器有限公司 | Empty filter element structure for realizing service life monitoring, service life monitoring method and application |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050723A (en) * | 2012-12-28 | 2013-04-17 | 清华大学 | Cathode exhaust recirculating system for proton exchange membrane fuel cell |
| CN110531270A (en) * | 2019-09-18 | 2019-12-03 | 上海重塑能源科技有限公司 | A kind of diagnostic method and its diagnostic system of fuel cell air supply system |
-
2020
- 2020-04-24 CN CN202010329987.7A patent/CN111668517B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103050723A (en) * | 2012-12-28 | 2013-04-17 | 清华大学 | Cathode exhaust recirculating system for proton exchange membrane fuel cell |
| CN110531270A (en) * | 2019-09-18 | 2019-12-03 | 上海重塑能源科技有限公司 | A kind of diagnostic method and its diagnostic system of fuel cell air supply system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111668517A (en) | 2020-09-15 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111668517B (en) | Intelligent reminding method for air filter replacement of hydrogen engine | |
| WO2010125636A1 (en) | Pm sensor, device for sensing amount of pm in exhaust gas, and abnormality sensing device for internal combustion engine | |
| US20130047841A1 (en) | Device for diagnosing a particle filter | |
| US7930876B2 (en) | Method and device for monitoring a particle filter in the exhaust line of an internal combustion engine | |
| CN107044948B (en) | Service life detection method for vehicle-mounted purifier filter screen | |
| US20100101302A1 (en) | Particulate sampling system and method of reducing oversampling during transients | |
| CN112798288B (en) | Portable vehicle-mounted remote emission energy consumption measuring system and method for heavy-duty diesel vehicle | |
| CN111813075B (en) | Engineering machinery on-line monitoring method, data management module and on-line monitoring system | |
| CN113314738A (en) | Method for evaluating running health state of hydrogen fuel cell engine system | |
| CN111412050B (en) | Automobile and error reporting method and system for simulating low DPF (diesel particulate filter) filtering efficiency of engine of automobile | |
| CN104115320A (en) | Hydrogen quality monitor | |
| CN212062590U (en) | Hydrogen engine | |
| CN111173655A (en) | Method and device for simulating failure of EGR (exhaust gas Recirculation) system of diesel engine | |
| CN113586214A (en) | Three-way catalyst monitoring method, vehicle exhaust system and vehicle | |
| CN210071607U (en) | Testing device for gas filtration of fuel cell air filter | |
| CN202832728U (en) | Long-distance automobile exhaust emission detecting device and automobile | |
| CN113713533A (en) | Control method and device of air filtering system, vehicle and storage medium | |
| CN115013131B (en) | DPF state monitoring method and device and vehicle | |
| CN114738097B (en) | DPF trapping efficiency monitoring method and device and vehicle | |
| CN111219235A (en) | Vehicle exhaust gas treatment method, device, storage medium and vehicle | |
| CN215939428U (en) | Air filtration system, fuel cell and vehicle | |
| CN102102565A (en) | Method and device for on-board error diagnosis in operation of internal combustion engine of motor vehicle | |
| KR101378560B1 (en) | Device for testing back pressure of diesel particulate filter and method for testing it using the same | |
| CN113740228A (en) | Empty filter element structure for realizing service life monitoring, service life monitoring method and application | |
| CN114109570A (en) | Fault monitoring method for single-membrane differential pressure sensor for GPF (general purpose function) |
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 |