阅读说明：本技术 一种集成化空滤器 (A kind of integrated air filter ) 是由 王德成 金钊 刘俊杰 隋鹏超 于 2019-09-25 设计创作，主要内容包括：本发明实施例公开的集成化空滤器,包括：空滤器壳体；滤芯识别控制模块天线,设置于空滤器壳体内侧,用于与电子标签通信,电子标签为设置于滤芯上的电子标签；滤芯识别控制模块,设置于空滤器壳体内侧,用于读取电子标签内存储的滤芯基本信息以得到真伪识别结果,并将真伪识别结果和/或滤芯基本信息传递至发动机ECU或整车仪表盘。本发明在将滤芯安装于空滤器壳体内后,滤芯识别控制模块能够读取电子标签内存储的滤芯基本信息,并根据该基本信息得到真伪识别结果,可将真伪识别结果和/或滤芯基本信息传递至发动机ECU或整车仪表盘,提醒用户滤芯的真伪情况,防止由于使用了劣质滤芯,无法达到有效过滤作用而造成发动机磨损的问题。(Integrated air filter disclosed by the embodiments of the present invention, comprising: air filter shell；Filter core identifies control module antenna, is set to air filter case inside, and for communicating with electronic tag, electronic tag is the electronic tag being set on filter core；Filter core identifies control module, air filter case inside is set to, for reading the filter core essential information stored in electronic tag to obtain truth identification as a result, and truth identification result and/or filter core essential information are transferred to Engine ECU or carload instrument disk.Filter core after being installed in air filter shell by the present invention, filter core identification control module can read the filter core essential information stored in electronic tag, and truth identification result is obtained according to the essential information, truth identification result and/or filter core essential information can be transferred to Engine ECU or carload instrument disk, remind the true and false situation of user's filter core, it prevents due to the problem of having used filter core inferior, being unable to reach effective filtration and cause engine scuffing.)

1. a kind of integrated air filter characterized by comprising

Air filter shell；

Filter core identifies control module antenna (107), is set to the air filter case inside, and the filter core identifies control module day For line (107) for communicating with electronic tag (109), the electronic tag (109) is the electronic tag being set on filter core (108) (109), the electronic tag (109) is written with filter core essential information and is obtained according to confidential information to be added by preset algorithm Sequence number is verified, the confidential information to be added is one of described filter core essential information or a variety of；

Filter core identifies control module (106), is set to the air filter case inside, for passing through filter core identification control mould Block antenna (107) reads the filter core essential information stored in the electronic tag (109), and by truth identification result and/or institute It states filter core essential information and is sent to Engine ECU or carload instrument disk, the truth identification result is check code and the verifying Result that sequence number compares or for solution confidential information and the information comparison to be encrypted obtain as a result, the check code is According to the check code that the confidential information to be added is obtained by the preset algorithm, the solution confidential information is according to the verifying sequence Number check code obtained by the retrospectively calculate of the preset algorithm.

2. integrated air filter as described in claim 1, which is characterized in that the filter core identifies control module antenna (107) It is all set on the inside of the front cover (101) of the air filter shell with filter core identification control module (106), and the filter core is known Other control module antenna (107) is circumferentially positioned on the outside of the gas outlet of the front cover (101).

3. integrated air filter as claimed in claim 2, which is characterized in that be provided with vehicle on the outside of the front cover (101) Harness (104), the overall wire sheaves (104) are connected with filter core identification control module (106), by the truth identification knot Fruit and/or filter core essential information are transferred to Engine ECU or carload instrument disk.

4. integrated air filter as claimed in claim 3, which is characterized in that the overall wire sheaves (104) pass through fixing clamper (105) it is fixed on the lateral surface of the front cover (101).

5. integrated air filter as claimed in claim 3, which is characterized in that be provided with first on the outside of the front cover (101) Wiring harness interface, first wiring harness interface is for connecting the overall wire sheaves (104) and filter core identification control module (106)。

6. integrated air filter as described in claim 1, which is characterized in that the filter core essential information include electronic tag only One of one UID, producer, model, production batch and vendor code are a variety of.

7. integrated air filter as claimed in any one of claims 1 to 6, which is characterized in that further include being set to the front cover (101) B/P EGR Back Pressure Transducer EGR (102) on, the B/P EGR Back Pressure Transducer EGR (102) are used to detect the resistance at the gas outlet on front cover (101) Force value；

Filter core identification control module (106) by the Resistance Value and/or needs emm message to be sent to carload instrument disk, In In preset time, when the Resistance Value is continuously in preset alarm Resistance Value or more, filter core identification control module (106) is raw Emm message is needed at described；Or

The Resistance Value is sent to Engine ECU by filter core identification control module (106), within a preset time, the resistance When force value is continuously in preset alarm Resistance Value or more, the Engine ECU generate it is described need emm message, and by the need Emm message is wanted to be sent to carload instrument disk, alternatively, the filter core identifies control module (106) or Engine ECU by the resistance Force value is sent to carload instrument disk.

8. integrated air filter as claimed in claim 7, which is characterized in that be provided with second on the outside of the front cover (101) Wiring harness interface (103), second wiring harness interface (103) be used for connect the B/P EGR Back Pressure Transducer EGR (102) harness and the filter Core identifies control module (106).

9. integrated air filter as claimed in claim 7, which is characterized in that reach the preset alarm resistance in the Resistance Value When the presupposition multiple of force value, the Resistance Value is sent to carload instrument disk by filter core identification control module (106), described pre- If multiple is the numerical value less than 1.

10. integrated air filter as claimed in claim 7, which is characterized in that the filter core identifies control module (106) basis The filter core essential information stored in the electronic tag (109) obtains the corresponding preset alarm Resistance Value of the filter core.

Technical field

The present invention relates to technical field of engines, more specifically to a kind of integrated air filter.

Background technique

Air cleaner is mainly used in the fields such as pneumatic machinery, diesel machine, and effect is provided for these mechanical equipments Clean air sucks the air with impurity particle at work to prevent these mechanical equipments and increases the machine of abrasion and damage Rate.The chief component of air cleaner is filter core and air filter casing, and wherein filter core is main filtration fraction, is carry The filtration of gas, and air filter casing is that provide for filter core must external structure to be protected.The work of air cleaner is wanted Seeking Truth can undertake efficient air-filtering work, not increase excessive resistance for air flowing, and can long time continuous working.

Engine is to suck a large amount of air during the work time, if the dirt that air without filtering, suspends in air It angstrom is inhaled into cylinder, the abrasion of piston group and cylinder will be accelerated.Biggish particle enters between piston and cylinder, will cause Serious " scuffing of cylinder bore " phenomenon, this is particularly acute in the sandy working environment of drying.Air cleaner is mounted in carburetor or air inlet The front of pipe plays the role of filtering out dust in air, sand grains, guarantees to enter enough, clean air in cylinder.

In the actual use of automobile, air cleaner has significant effect the service life of engine.On the one hand, such as Fruit does not have the filtration of air cleaner, and engine will suck the largely air containing dust, particle, lead to engine air Cylinder serious wear.

Conventional air cleaner only has air filtering function, and consumer is due to that can not identify the excellent of air cleaner cartridge It is bad, it often buys personation filter core and can not identify, due to having used filter core inferior, be unable to reach effective filtration and cause to send out Motivation abrasion.

In addition, if in use, not giving maintenance for a long time, the filter core of air cleaner will stick air In dust, this not only declines filter capacity, but also can interfere the circulation of air, leads to gaseous mixture overrich and makes engine It works abnormal.Use parking lot scape, habit different due to user, so the period of replacement filter core is also different, so often appearance Filter core cannot replace or replace in time excessively frequent problem.

Therefore, how personation filter core is identified, becomes those skilled in the art's technical problem urgently to be resolved.

Summary of the invention

In view of this, the purpose of the present invention is to provide a kind of integrated air filter, to be identified to personation filter core.

To achieve the above object, the invention provides the following technical scheme:

A kind of integrated air filter, comprising:

Air filter shell；

Filter core identifies control module antenna, is set to the air filter case inside, and the filter core identifies control module day Line with electronic tag for communicating, and the electronic tag is the electronic tag being set on filter core, and the electronic tag is written with Filter core essential information and the verifying sequence number obtained according to confidential information to be added by preset algorithm, the confidential information to be added are institute State one of filter core essential information or a variety of；

Filter core identifies control module, is set to the air filter case inside, for passing through filter core identification control mould Block antenna reads the filter core essential information stored in the electronic tag, and truth identification result and/or the filter core is basic Information is sent to Engine ECU or carload instrument disk, and the truth identification result is that check code is compared with the verifying sequence number Obtained result or for solution confidential information and the information comparison to be encrypted obtain as a result, the check code be according to it is described to The check code that encryption information is obtained by the preset algorithm, the solution confidential information are described to be passed through according to the verifying sequence number The check code that the retrospectively calculate of preset algorithm obtains.

Preferably, in above-mentioned integrated air filter, the filter core identification control module antenna and filter core identification control Molding block is all set on the inside of the front cover of the air filter shell, and filter core identification control module antenna is circumferentially positioned at institute On the outside of the gas outlet for stating front cover.

Preferably, in above-mentioned integrated air filter, overall wire sheaves, the overall wire sheaves are provided on the outside of the front cover It is connected with filter core identification control module, the truth identification result and/or filter core essential information is transferred to engine ECU or carload instrument disk.

Preferably, in above-mentioned integrated air filter, the overall wire sheaves are fixed on the front cover by fixing clamper On lateral surface.

Preferably, in above-mentioned integrated air filter, it is provided with the first wiring harness interface on the outside of the front cover, described first Wiring harness interface is for connecting the overall wire sheaves and filter core identification control module.

Preferably, in above-mentioned integrated air filter, the filter core essential information include the unique UID of electronic tag, producer, One of model, production batch and vendor code are a variety of.

It preferably, further include the B/P EGR Back Pressure Transducer EGR being set on the front cover in above-mentioned integrated air filter, it is described negative Pressure sensor is used to detect the Resistance Value at the gas outlet on front cover；

The filter core identification control module by the Resistance Value and/or needs emm message to be sent to carload instrument disk, In In preset time, when the Resistance Value is continuously in preset alarm Resistance Value or more, the filter core identification control module generates institute It states and needs emm message；Or

The Resistance Value is sent to Engine ECU by the filter core identification control module, within a preset time, the resistance When value is continuously in preset alarm Resistance Value or more, the Engine ECU generate it is described need emm message, and by the needs Emm message is sent to carload instrument disk, alternatively, filter core identification control module or Engine ECU send the Resistance Value To carload instrument disk.

Preferably, in above-mentioned integrated air filter, it is provided with the second wiring harness interface on the outside of the front cover, described second Wiring harness interface is used to connect the harness and filter core identification control module of the B/P EGR Back Pressure Transducer EGR.

Preferably, in above-mentioned integrated air filter, reach the default of the preset alarm Resistance Value in the Resistance Value When multiple, the Resistance Value is sent to carload instrument disk by the filter core identification control module, and the presupposition multiple is less than 1 Numerical value.

Preferably, in above-mentioned integrated air filter, the filter core identification control module is according to the electronic tag memory The filter core essential information of storage obtains the corresponding preset alarm Resistance Value of the filter core.

It can be seen from the above technical scheme that integrated air filter provided by the invention, integrates in air filter shell Filter core identification control module antenna and filter core identify control module, and electronic tag is provided on filter core, install by filter core After in air filter shell, filter core identifies that control module antenna is communicated with electronic tag generation, so that filter core identification control Module can read the filter core essential information stored in electronic tag, and truth identification obtained according to the essential information as a result, from And truth identification result and/or filter core essential information can be sent to Engine ECU or carload instrument disk, to remind user newly more The true and false situation of the filter core changed, prevents due to having used filter core inferior, and is unable to reach effective filtration and causes engine The problem of abrasion.

In another technical solution of the present invention, the B/P EGR Back Pressure Transducer EGR of Resistance Value at detection front cover gas outlet is increased, this is negative Resistance Value is sent to filter core identification control module by pressure sensor, and carload instrument disk will receive Resistance Value or need to maintain letter Breath, to remind user to replace filter core in time, excessively frequent problem cannot be replaced or replace in time by avoiding the occurrence of filter core.

Detailed description of the invention

In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with It obtains other drawings based on these drawings.

Fig. 1 is the structural schematic diagram of air filter shell provided in an embodiment of the present invention；

Fig. 2 is the side view of air filter shell provided in an embodiment of the present invention；

Fig. 3 is the structural schematic diagram inside front cover provided in an embodiment of the present invention；

Fig. 4 is the front view inside the front cover that inventive embodiments provide；

Fig. 5 is the cross-sectional view of integrated air filter provided in an embodiment of the present invention.

Wherein, 101 be front cover, and 102 be B/P EGR Back Pressure Transducer EGR, and 103 be the second wiring harness interface, and 104 be overall wire sheaves, and 105 are Fixing clamper, 106 identify control module for filter core, and 107 identify control module antenna for filter core, and 108 be filter core, and 109 be electronics Label.

Specific embodiment

Core of the invention is to provide a kind of integrated air filter, to identify to personation filter core.

Hereinafter, being illustrated referring to attached drawing to embodiment.In addition, embodiments illustrated below is not to recorded in claim Summary of the invention rise any restriction effect.In addition, the full content of composition represented by following example is not limited to as right Necessary to the solution invented documented by it is required that.

It as shown in Figure 3-Figure 5, include air filter shell, filter core knowledge the embodiment of the invention discloses a kind of integrated air filter Other control module antenna 107 and filter core identify control module 106.

Wherein, air filter shell is the shell for installing filter core 108, is detachable structure, generally includes shell sheet The replacement of filter core 108 may be implemented by opening front cover 101 in body and the front cover 101 being removably mounted in enclosure body.

Filter core identification control module antenna 107 be set to air filter case inside so that can be mounted on air filter The intracorporal filter core 108 of shell is corresponding, and electronic tag 109 is equipped on filter core 108, and electronic tag 109 should be mounted on filter core 108 Close to one end (i.e. close to one end of front cover 101) of filter core identification control module antenna 107, so that electronic tag The distance between 109 and filter core identification control module antenna 107 meet the distance of reaction of the two inductive communication.

For filter core identification control module antenna 107 for communicating with electronic tag 109, electronic tag 109 is stored with filter core base This information, filter core essential information may include in the unique UID of electronic tag, producer, model, production batch and vendor code It is one or more.It should be noted that filter core essential information also may include other information other than above-named information, It can specifically be required and be set according to businessman, do not enumerated herein.

Filter core identification control module 106 is set to air filter case inside, for identifying control module antenna by filter core 107 read the filter core essential information stored in electronic tag 109 to obtain truth identification result.

Electronic tag 109 is also written with verifying sequence number other than being written with filter core essential information, verifies Serial No. The sequence number (i.e. ciphering process) obtained according to confidential information to be added by preset algorithm, wherein confidential information to be added is that filter core is believed substantially One of breath is a variety of, i.e., by one in the unique UID of electronic tag, producer, model, production batch and vendor code or Multiple (including wholes) are verified sequence number by preset algorithm, it can carry out at least one of filter core essential information Encryption is verified sequence number.Preset algorithm can there are many, can choose a kind of execution.

Truth identification result be check code and verifying sequence number compare as a result, check code is according to confidential information to be added The check code obtained by preset algorithm, i.e. filter core identification control module 106 treat encryption information progress using identical algorithm Cryptographic operation obtains check code.If filter core is true filter core, illustrate the verifying sequence number being written on the electronic tag 109 of filter core, It should be consistent with check code；If inconsistent, illustrate the verifying sequence number being written on the electronic tag 109 of filter core not using above-mentioned What algorithm for encryption obtained, then it is judged as false filter core.

The result that truth identification result can also obtain for solution confidential information with information comparison to be encrypted.It is tested according to solution confidential information The check code that card sequence number is obtained by the retrospectively calculate of preset algorithm.Preset algorithm refers to that confidential information to be added is encrypted to verifying sequence The process of row number；And the retrospectively calculate of preset algorithm is the process for being decrypted into confidential information to be added by verifying sequence number.Filter core is known Other control module 106 decrypts verifying sequence number using retrospectively calculate to obtain solution confidential information.If filter core is true filter core, illustrate to filter The confidential information to be added being written on the electronic tag 109 of core, should be consistent with solution confidential information；If inconsistent, illustrate the electronics of filter core The confidential information to be added being written on label 109 is not to be obtained using above-mentioned algorithm for encryption, then is judged as false filter core.

It will be appreciated by persons skilled in the art that electronic label technology is widely used to anti-counterfeit field (i.e. by adding Close mode is realized anti-fake), since the Application in Anti-counterfeiting of electronic tag belongs to routine techniques, herein not to specific anti-fake bottom Layer principle is described in detail, and introduces the truth identification field that the anti-counterfeiting technology of electronic tag is applied to filter core.

Truth identification result and/or filter core essential information can be transferred to Engine ECU by filter core identification control module 106 (Electronic Control Unit, electronic control unit) or carload instrument disk.Filter core identifies that control module 106 can be only The filter core essential information stored in electronic tag 109 is transferred to Engine ECU or carload instrument disk, by user according to filter core base This information voluntarily judges the true and false of filter core, such as can be by the filter core essential information that shows on carload instrument disk, with producer's core The real true and false.Filter core identification control module 106 can also judge the true and false of filter core according to filter core essential information and obtain truth identification knot The recognition result is sent to Engine ECU or carload instrument disk by fruit, for reference.Filter core identifies that control module 106 can also Truth identification result and filter core essential information are transferred to Engine ECU or carload instrument disk, it is for reference.

Integrated air filter provided by the invention is integrated with filter core identification control module antenna 107 in air filter shell Control module 106 is identified with filter core, and is provided with electronic tag 109 on filter core 108, and filter core 108 is being installed on air filter shell After in vivo, filter core identifies that control module antenna 107 is communicated with the generation of electronic tag 109, so that filter core identifies control module 106 can read the filter core essential information stored in electronic tag 109, and truth identification obtained according to the essential information as a result, So as to which truth identification result and/or filter core essential information are sent to Engine ECU or carload instrument disk, to remind user new The true and false situation of the filter core of replacement, prevents due to having used filter core inferior, and is unable to reach effective filtration and causes to start The problem of machine is worn.

As shown in Figure 3 and Figure 4, filter core identification control module antenna 107 and filter core identification control module 106 are all set in sky 101 inside of front cover of filter shell, and filter core identification control module antenna 107 is circumferentially positioned on the outside of the gas outlet of front cover 101, Since the gas outlet that the end of filter core 108 can be connected to front cover 101 goes out, so filter core identification control module antenna 107 is surround It is arranged on the outside of the gas outlet of front cover 101, filter core identification control module antenna 107 is enabled to more to lean on electronic tag 109 Closely, i.e., the end of filter core 108 is arranged in electronic tag 109.

Since filter core identification control module antenna 107 is circumferentially positioned on the outside of the gas outlet of front cover 101, even if so filter core 109 rotational angles, the electronic tag 109 of end still can identify that control module antenna 107 generates inductive signal with filter core, Facilitate the installation of filter core 108.Filter core identification control module 106 is arranged in 101 inside of front cover, relative to traditional structure, knot Structure variation is small, is easy to arrange and promote.And filter core identification control module 106 is arranged in 101 inside of front cover, it can be by starting Machine charge air flow cools down electric elements, improves the reliability of filter core identification control module 106, and reduces electric appliance member Part type selecting cost.

As depicted in figs. 1 and 2, the outside of front cover 101 is provided with overall wire sheaves 104, and overall wire sheaves 104 and filter core identification are controlled Molding block 106 is connected, and truth identification result and/or filter core essential information are transferred to Engine ECU or carload instrument disk.Into One step, overall wire sheaves 104 are fixed on the lateral surface of front cover 101 by fixing clamper 105, to play arrangement overall wire sheaves 104 and fixed 104 position of overall wire sheaves effect.The quantity of fixing clamper 105 and position, can be according to overall wire sheaves 104 Depending on route.

In a specific embodiment of the invention, the outside of front cover 101 is provided with the first wiring harness interface, and the first wiring harness interface is used Control module 106 is identified in connection overall wire sheaves 104 and filter core.First wiring harness interface plays connection overall wire sheaves 104 and filter core The effect for identifying control module 106, can facilitate the connection of filter core identification control module 106 and overall wire sheaves 104, and filter After core identifies that control module 106 is damaged, it is also more convenient replacement.

In a specific embodiment of the invention, integrated air filter may also include the negative pressure sensing being set on front cover 101 Device 102, B/P EGR Back Pressure Transducer EGR 102 are used to detect the Resistance Value at the gas outlet on front cover 101.

Filter core identification control module 106 by Resistance Value and/or needs emm message to be sent to carload instrument disk, when default In, when Resistance Value is continuously in preset alarm Resistance Value or more (above comprising preset alarm Resistance Value), filter core identification control The generation of module 106 needs emm message.Increase this condition of preset time, be in order to prevent Resistance Value beat suddenly bring mistake The case where alarm.It can be according to sets itself the case where filter core, usually by preset alarm Resistance Value in 6kpa- if alarming Resistance Value Value between 8kpa.Need emm message can on carload instrument disk body bright light or by way of directly displaying text It is existing, it certainly can also be other alerting patterns, the present embodiment is not limited to a certain or several ways, reminds user as long as can play Replace the effect of filter core.

Resistance Value can also be sent to Engine ECU by filter core identification control module 106, and within a preset time, Resistance Value is held When continuing more than preset alarm Resistance Value (above including preset alarm Resistance Value), Engine ECU generation needs emm message, And emm message will be needed to be sent to carload instrument disk, alternatively, filter core identifies control module 106 or Engine ECU by Resistance Value It is sent to carload instrument disk, i.e. carload instrument disk can also receive filter core identification control other than it can receive and need emm message The Resistance Value that molding block 106 or Engine ECU are sent, can also only receive certainly and need emm message.

In the present embodiment, the B/P EGR Back Pressure Transducer EGR of Resistance Value at detection front cover gas outlet is increased, which will Resistance Value is sent to filter core identification control module, and carload instrument disk will receive Resistance Value or need emm message, to remind use Filter core is replaced at family in time, and excessively frequent problem cannot be replaced or replace in time by avoiding the occurrence of filter core.

It should be noted that there is also differences for usual preset alarm Resistance Value due to the difference of filter core.General filter capacity Strong filter core, Resistance Value is also larger, is that cannot accurately react all filter cores to be so only setting a preset alarm Resistance Value What no needs maintained.For example, the stronger filter core of filter capacity is A filter core, and the relatively weak filter core of filter capacity is B filter core.

If preset alarm Resistance Value is set for B filter core, after user changes the outfit A filter core, although B/P EGR Back Pressure Transducer EGR 102 The Resistance Value detected has had reached the preset alarm Resistance Value of setting, but the filter capacity of A filter core does not drop to need The degree to be replaced, i.e. the A filter core can also play effective filtration, carry out replacement maintenance to A filter core at this time, be a kind of The waste of resource.

Correspondingly, if setting preset alarm Resistance Value for A filter core, after user changes the outfit B filter core, although negative pressure passes The preset alarm Resistance Value that the Resistance Value that sensor 102 detects also not up to is set, but the filter capacity of B filter core has declined To limiting value, effective filtering can not be provided for engine, need to carry out the B filter core replacement maintenance, and due to not up to setting Fixed preset alarm Resistance Value does not remind user to maintain filter core at this time, but since B filter element filtering ability declines, meeting The circulation for interfering air, leads to gaseous mixture overrich and keeps engine operation abnormal.

Based on the above reasons, it needs to have used a greater variety of filter cores according to a variety of preset alarm Resistance Values are set.Although Multiple preset alarm Resistance Values can be set, but how to accomplish that the correspondence of filter core and corresponding preset alarm Resistance Value is to be difficult 's.Inventor thinks to allow maintenance personnel, after replacing filter core, select in automobile ECU corresponding with the filter core by research and development Or closer preset alarm Resistance Value, but need professional that could operate.

Based on the above issues, inventor continues to tackle key problems to the technical problem, and discovery can be with filter core antiforge function knot Altogether.It is corresponding that filter core identification control module 106 can obtain the filter core according to the filter core essential information stored in electronic tag 109 Preset alarm Resistance Value.Preset alarm Resistance Value can write direct in electronic tag 109, can also be according in electronic tag 109 The filter core essential information of storage obtains the filter core of which kind of corresponding model, it is corresponding pre- then to obtain the corresponding filter core of this kind of model If alarming Resistance Value.

In the present embodiment, the original electronic tag 109 anti-fake as filter core is cleverly utilized, by preset alarm Resistance Value It is mapped with electronic tag 109, is then mapped with filter core, to can guarantee that different filter cores is corresponding with different preset Alarm Resistance Value, to guarantee the accuracy of emm message, and does not need maintenance personnel and manually selects preset alarm Resistance Value, It greatly ensure that ease for use.

The Resistance Value that B/P EGR Back Pressure Transducer EGR 102 detects only can be sent to carload instrument by filter core identification control module 106 Disk, voluntarily judged by user according to Resistance Value filter core whether the replacement.This point is similar to tire pressure monitoring, and instrument can be shown respectively The tire pressure of a tire voluntarily judges whether the supplement air pressure according to tire pressure value by user.

Whether filter core identification control module 106 can also judge filter core according to the Resistance Value that B/P EGR Back Pressure Transducer EGR 102 detects The replacement simultaneously obtains needing emm message, can also be generated by Engine ECU and need emm message, filter core identifies control module 106 Or Engine ECU will need emm message to issue carload instrument disk, it is for reference.Filter core identifies that control module 106 can also incite somebody to action Resistance Value and emm message is needed to be sent to carload instrument disk, it is for reference.Although Resistance Value has been more than to need replacing filter The limiting value of core provides need emm message at this time, and filter core also can not be changed in user, and after Resistance Value further increases, Voluntarily judgement replacement again, so by Resistance Value and emm message is needed to be sent to Engine ECU or carload instrument disk together, to user Directive significance it is bigger.

The Resistance Value that B/P EGR Back Pressure Transducer EGR 102 detects can be sent to Engine ECU or carload instrument disk in real time, can not also send out It send to Engine ECU or carload instrument disk, only sends and need emm message.In order to further remind the practical feelings of user's filter core Condition, when Resistance Value reaches the presupposition multiple of preset alarm Resistance Value, filter core identification control module 106 can be sent Resistance Value To carload instrument disk, presupposition multiple is the numerical value less than 1, usually should be less than 1, and close to 1 numerical value by presupposition multiple.Exist When the Resistance Value that B/P EGR Back Pressure Transducer EGR 102 detects is close to preset alarm Resistance Value, then Resistance Value is sent to carload instrument disk, with Reminding the service life of user's filter core will expire.Presupposition multiple usually may be set to the numerical value between 0.8-0.95.

As shown in Fig. 2, the outside of front cover 101 is provided with the second wiring harness interface 103 in a specific embodiment of the invention, Second wiring harness interface 103 is used to connect the harness and filter core identification control module 106 of B/P EGR Back Pressure Transducer EGR 102.Second wiring harness interface 103 play the role of connecting B/P EGR Back Pressure Transducer EGR 102 and filter core identification control module 106, can facilitate B/P EGR Back Pressure Transducer EGR 102 and filter Core identifies the connection of control module 106, and after the damage of B/P EGR Back Pressure Transducer EGR 102, is also more convenient replacement.B/P EGR Back Pressure Transducer EGR 102 It is generally arranged on the outer wall of the gas outlet of front cover 101.