CN112730191A - Vehicle air filter blockage degree detection method and system and vehicle-mounted terminal - Google Patents
Vehicle air filter blockage degree detection method and system and vehicle-mounted terminal Download PDFInfo
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- CN112730191A CN112730191A CN202011516843.9A CN202011516843A CN112730191A CN 112730191 A CN112730191 A CN 112730191A CN 202011516843 A CN202011516843 A CN 202011516843A CN 112730191 A CN112730191 A CN 112730191A
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- 238000001514 detection method Methods 0.000 title claims description 12
- 238000000034 method Methods 0.000 claims abstract description 9
- 239000002245 particle Substances 0.000 claims description 22
- 239000004071 soot Substances 0.000 claims description 18
- 230000008021 deposition Effects 0.000 claims description 4
- 230000000903 blocking effect Effects 0.000 abstract description 2
- 239000000428 dust Substances 0.000 description 10
- 238000001914 filtration Methods 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 101100518501 Mus musculus Spp1 gene Proteins 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 239000011162 core material Substances 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000001627 detrimental effect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003203 everyday effect Effects 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 210000004072 lung Anatomy 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 239000002699 waste material Substances 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
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M15/00—Testing of engines
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
- G01N15/08—Investigating permeability, pore-volume, or surface area of porous materials
- G01N2015/084—Testing filters
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
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- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
The invention provides a method and a system for detecting the blocking degree of an air filter of a vehicle and a vehicle-mounted terminal.
Description
Technical Field
The invention belongs to the technical field of detection of the blockage degree of an air filter, and particularly relates to a method and a system for detecting the blockage degree of the air filter and a vehicle-mounted terminal.
Background
The life of an automobile is largely dependent on the life of the engine, and the most detrimental to engine performance and life would be dust and pollution. Air filters (Air filters) are the only way to protect the engine from dust and pollution, and are therefore called "engine lungs". The main components of an air cleaner are a filter element, which is the main filtering part, which undertakes the filtering of the gas, and a housing, which is the external structure that provides the necessary protection for the filter element.
When the engine is in operation, a large amount of air needs to be sucked, and if the air is not filtered, dust and particles in the air are sucked into the cylinder, so that the abrasion of the piston group and the cylinder is accelerated. Larger particles enter between the piston and the cylinder to cause serious cylinder pulling, and are particularly serious in a heavy dust environment (the dust content reaches 1.0-10mg/Cu. ft, namely the environment belongs to the heavy dust environment). The air filter is used as a main component of an air intake system and is used for filtering dust and impurities in air and providing pure air for internal combustion of an engine. In addition, if the air cleaner is used and maintained for a long time, the filter element of the air cleaner is stuck with dust in the air, which not only reduces the filtering capacity, but also hinders the circulation of the air, and causes the mixed gas to be too rich, so that the engine works abnormally. Therefore, on-schedule maintenance cleaning or replacement of the air cleaner is critical.
Generally, a vehicle is replaced every 1.5 kilometers in a general environment, and if the vehicle frequently works in a severe environment (such as an environment with more dust and particles), the vehicle should be replaced no more than 1 kilometer. The air cleaner should be periodically inspected and service cleaned or replaced during use. Some engineering vehicles working in desert need cleaning the air filter every day. Because the running environment of the vehicle cannot be determined, and the PM values contained in the air passing through different regions are different, the blockage degree of the air filter is judged to be inaccurate only according to the running time or the running mileage of the vehicle, the air filter is cleaned and maintained or replaced too early or too late, negative effects are brought, manpower and material resources are wasted too early, and the air filter cannot be cleaned and maintained or replaced too late, so that the normal work of an engine is influenced.
Disclosure of Invention
In view of the above, the invention provides a method and a system for detecting the clogging degree of an air filter, and an on-vehicle terminal.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, a method for detecting a degree of clogging of an air cleaner of a vehicle includes:
acquiring the intake air flow Qi of a vehicle engine and the PM concentration Ri of an area where a vehicle is located according to a preset period;
and accumulating the products of Qi, Ri and eta i by the following Soot deposition model to obtain the particle number Soot on the air filter:
Soot＝∑Qi Riηi，
wherein η i is the efficiency of the air cleaner;
the clogging degree of the air cleaner is determined by the particle number Soot.
In another aspect, a vehicle air filter restriction detection system is provided that includes a memory module containing instructions loaded and executed by a processor, which when executed, cause the processor to perform a DPF regeneration control method as described above.
In still another aspect, an in-vehicle terminal having a vehicle air filter clogging degree detection system as described above is provided.
According to the invention, the particle number on the air filter is calculated according to the air inlet flow of the engine, the PM concentration of the area where the vehicle is located, the efficiency of the air filter and the dust deposition model, the blocking degree of the air filter is determined according to the particle number, the detection result is accurate, and further, whether the air filter needs to be maintained, cleaned or continuously used or replaced at present can be judged, so that the waste of manpower and material resources is not caused, and the normal work of the engine is not influenced.
Drawings
The invention is described in detail below with reference to the following figures and detailed description:
FIG. 1 is a flow chart of the present invention.
Detailed Description
As shown in fig. 1, an embodiment of the present disclosure provides a method for detecting a degree of clogging of an air cleaner of a vehicle, including:
s101, obtaining air inflow Qi (m) of a vehicle engine according to a preset period3H) obtaining the PM concentration Ri (g/m) of the area where the vehicle is located3)。
Wherein the intake air flow Qi is acquired from a vehicle engine controller ECU.
The PM concentration Ri can be obtained by the following procedure:
and acquiring vehicle position information in a GPS mode, and inquiring the PM concentration Ri of the area where the vehicle is located from the air quality server through the vehicle position information.
S102, accumulating the product of Qi, Ri and eta i through the following Soot deposition model to obtain the particle number Soot on the air filter:
Soot＝∑Qi Riηi，
wherein, eta i is air cleaner efficiency (%), and air cleaner's filtration efficiency is influenced by factors such as empty filter core material, empty molding of straining, and empty design is stereotyped back, and efficiency has just been confirmed, generally provides by air cleaner's producer.
Since the particle flow rate is the intake air flow rate QixPM concentration Ri and the particle increase amount attached to the filter is the particle flow rate x the air cleaner efficiency η i, the particle count Soot on the filter can be obtained by adding up the particle increase amounts. From the very beginning of the air cleaner to the present, n sets of data were obtained: q1xR1x eta 1, Q2xR2x eta 2, Q3xR3x eta 3 … QnxRnx eta n, the current particle number on the air filter is the accumulated value of the data.
S103, determining the blockage degree of the air filter through the particle number Soot, so that an optimal maintenance or replacement strategy can be further given to a user.
The particle number Soot and the corresponding relation between the preset particle number Soot and the blockage degree can be matched to determine the blockage degree of the air filter, and the corresponding relation can be provided by an air filter manufacturer.
Based on the same inventive concept, the present specification also provides a vehicle air filter clogging degree detection system, which comprises a storage module, wherein the storage module comprises instructions loaded and executed by a processor, and the instructions when executed enable the processor to execute the steps according to the various exemplary embodiments of the present invention described in the vehicle air filter clogging degree detection method section.
The memory module may include a readable medium in the form of a volatile memory unit, such as a random access memory unit (RAM) and/or a cache memory unit, and may further include a read only memory unit (ROM).
Program code for carrying out operations for aspects of the present invention may be written in any combination of one or more programming languages, including an object oriented programming language such as Java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The program code may execute entirely on the user's computing device, partly on the user's device, as a stand-alone software package, partly on the user's computing device and partly on a remote computing device, or entirely on the remote computing device or server. In the case of a remote computing device, the remote computing device may be connected to the user computing device through any kind of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or may be connected to an external computing device (e.g., through the internet using an internet service provider).
Based on the same inventive concept, the embodiment of the present specification further provides a vehicle-mounted terminal, such as a TBOX, and may also be other vehicle-mounted terminals having a GPS function and a function of communicating with a vehicle ECU, where the vehicle-mounted terminal has the above-mentioned system for detecting a degree of blockage of a vehicle air filter, and details thereof are not repeated herein.
However, those skilled in the art should realize that the above embodiments are illustrative only and not limiting to the present invention, and that changes and modifications to the above described embodiments are intended to fall within the scope of the appended claims, provided they fall within the true spirit of the present invention.
Claims (6)
1. A method of detecting a degree of clogging of an air cleaner for a vehicle, comprising:
acquiring the intake air flow Qi of a vehicle engine and the PM concentration Ri of an area where a vehicle is located according to a preset period;
and accumulating the products of Qi, Ri and eta i by the following Soot deposition model to obtain the particle number Soot on the air filter:
Soot＝∑QiRiηi，
wherein η i is the efficiency of the air cleaner;
the clogging degree of the air cleaner is determined by the particle number Soot.
2. The vehicle air filter clogging degree detecting method according to claim 1, wherein the intake air flow rate Qi is acquired from a vehicle engine controller ECU.
3. The vehicle air filter clogging degree detection method according to claim 1 or 2, wherein the acquiring the PM concentration Ri of the zone where the vehicle is located, further includes:
acquiring vehicle position information;
and inquiring the PM concentration Ri of the area where the vehicle is located from the air quality server through the vehicle position information.
4. The vehicle air filter clogging degree detection method according to claim 3, wherein the determining the clogging degree of the air filter by the particle number Soot, further comprises:
and matching the particle number Soot with a preset corresponding relation between the particle number Soot and the blockage degree, and determining the blockage degree of the air filter.
5. A vehicle air filter clogging degree detection system, characterized by comprising a storage module including instructions loaded and executed by a processor, the instructions, when executed, causing the processor to perform a vehicle air filter clogging degree detection method according to any one of claims 1 to 4.
6. An in-vehicle terminal characterized by having a vehicular air cleaner clogging degree detecting system according to claim 5.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011516843.9A CN112730191A (en) | 2020-12-21 | 2020-12-21 | Vehicle air filter blockage degree detection method and system and vehicle-mounted terminal |
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| CN202011516843.9A CN112730191A (en) | 2020-12-21 | 2020-12-21 | Vehicle air filter blockage degree detection method and system and vehicle-mounted terminal |
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| CN112730191A true CN112730191A (en) | 2021-04-30 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013174170A (en) * | 2012-02-24 | 2013-09-05 | Mitsubishi Motors Corp | Exhaust emission control device |
| JP2016037899A (en) * | 2014-08-07 | 2016-03-22 | 株式会社デンソー | Filter failure detection device |
| CN107014733A (en) * | 2017-04-26 | 2017-08-04 | 苏州达菲特过滤技术股份有限公司 | A kind of test system and method for the cleaner filter efficiency for simulating vehicle-mounted operating mode |
| DE102019102880A1 (en) * | 2018-02-21 | 2019-08-22 | Mann+Hummel Gmbh | Method for determining the loading state of a filter element of a filter system, filter system and fuel cell system |
| CN110344970A (en) * | 2018-04-08 | 2019-10-18 | 罗伯特·博世有限公司 | Air cleaner monitoring system and method |
-
2020
- 2020-12-21 CN CN202011516843.9A patent/CN112730191A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2013174170A (en) * | 2012-02-24 | 2013-09-05 | Mitsubishi Motors Corp | Exhaust emission control device |
| JP2016037899A (en) * | 2014-08-07 | 2016-03-22 | 株式会社デンソー | Filter failure detection device |
| CN107014733A (en) * | 2017-04-26 | 2017-08-04 | 苏州达菲特过滤技术股份有限公司 | A kind of test system and method for the cleaner filter efficiency for simulating vehicle-mounted operating mode |
| DE102019102880A1 (en) * | 2018-02-21 | 2019-08-22 | Mann+Hummel Gmbh | Method for determining the loading state of a filter element of a filter system, filter system and fuel cell system |
| CN110344970A (en) * | 2018-04-08 | 2019-10-18 | 罗伯特·博世有限公司 | Air cleaner monitoring system and method |
Non-Patent Citations (1)
| Title |
|---|
| 中华人民共和国机械行业标准: "《JB-T 9755.5-2013 内燃机 空气滤清器 第5部分 性能试验方法》", vol. 1, 吉林科学技术出版社, pages: 185 - 196 * |
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