CN111894711B - Fake identification method and fake identification device for urea injection system - Google Patents
Fake identification method and fake identification device for urea injection system Download PDFInfo
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- CN111894711B CN111894711B CN201910371151.0A CN201910371151A CN111894711B CN 111894711 B CN111894711 B CN 111894711B CN 201910371151 A CN201910371151 A CN 201910371151A CN 111894711 B CN111894711 B CN 111894711B
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
- F01N—GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR MACHINES OR ENGINES IN GENERAL; GAS-FLOW SILENCERS OR EXHAUST APPARATUS FOR INTERNAL COMBUSTION ENGINES
- F01N11/00—Monitoring or diagnostic devices for exhaust-gas treatment apparatus, e.g. for catalytic activity
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/40—Engine management systems
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- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Gas After Treatment (AREA)
Abstract
The present application provides a verification unit and a verification method for distinguishing whether a target module or component of a urea injection system of a vehicle is an original module or component, wherein the urea injection system comprises a urea supply module and a urea injection module. The fake identifying unit comprises: a measuring device; a timer; a memory; and a controller communicatively coupled to the measurement device, the timer, and the memory, configured to: acquiring a real-time value of the pseudo-distinguishing parameter from the measuring device; acquiring the actual duration of the target module or component after the target module or component is electrified from the timer; acquiring the preset distinguishing duration and the corresponding preset value of the distinguishing parameter from the memory; and comparing the real-time value of the fake-distinguishing parameter with the preset value when the actual time length reaches the preset fake-distinguishing time length, and judging that the target module or component is at risk of being a non-original module or component when the real-time value of the fake-distinguishing parameter exceeds the preset value.
Description
Technical Field
The application relates to the field of vehicle exhaust aftertreatment, in particular to a fake identifying device and a fake identifying method for identifying a urea supply module and a urea injection module of a vehicle urea injection system.
Background
Urea injection systems have a remarkable role in improving environmental pollution due to exhaust emissions of vehicles, and are thus widely used in vehicles of various countries.
The urea injection system of a vehicle is typically used with a corresponding associated electronic control unit to function optimally. Suppliers often provide this complete electronic control unit or strategy at the same time as delivering the customer's high quality urea injection system components. However, in some cases, for reasons of price or other reasons, some manufacturers produce by themselves dummy components that are used to replace genuine components of urea injection systems or similar components that are used by themselves to replace different brands or functions, together with electronic control units that should be used in conjunction with the genuine components, to some extent reducing the performance and efficiency of the urea injection system or failing to function properly at all, even more so, causing accidents. Not only harms the honor of the genuine manufacturer, but also infringes the right of the genuine manufacturer and related intellectual property rights.
It is desirable to solve the above problems.
Disclosure of Invention
The invention aims to provide a fake identifying device and a fake identifying method for identifying authenticity of a target module or a part of a urea injection system.
In the present application, the term "target module or component" refers to the smallest unit of the urea injection system that is possible to be replaced individually, which may be a monolithic module or assembly of several parts that constitute the urea injection system, or may be a single component that constitutes the urea injection system.
To this end, according to one aspect of the present application, there is provided a dummy unit for discriminating whether a target module or a component of a urea injection system of a vehicle is an original module or a component, wherein the urea injection system comprises a urea supply module and a urea injection module, the dummy unit comprising:
measuring means for measuring a real-time value of a spurious parameter of the target module or component;
the timer is used for timing the duration of time which is sustained after the target module or the component is activated;
the memory is used for storing preset fake distinguishing duration for the target module or the component and preset values of fake distinguishing parameters corresponding to the preset fake distinguishing duration; and
a controller in communication with the measurement device, the timer, and the memory, the controller configured to: acquiring a real-time value of the pseudo-distinguishing parameter from the measuring device; acquiring the actual duration of the target module or component after the target module or component is electrified from the timer; acquiring the preset distinguishing duration and the corresponding preset value of the distinguishing parameter from the memory; and comparing the real-time value of the fake-distinguishing parameter with the preset value when the actual time length reaches the preset fake-distinguishing time length, and judging that the target module or component is at risk of being a non-original module or component when the real-time value of the fake-distinguishing parameter exceeds the preset value.
The spurious parameter is a real-time temperature of a heater of the urea supply module when the target module or component is the urea supply module, preferably the preset spurious duration is 200 seconds, 500 seconds or 900 seconds, and the preset value of the spurious parameter is-37, -36 or-30 degrees. The distinguishing parameter is the resistance of a winding coil of an electromagnetic injection valve of the urea injection module when the target module or component is the urea injection module, preferably the preset distinguishing duration is 5 minutes.
In an embodiment, the discrimination unit further comprises an alarm communicatively connected to the controller, the controller being configured to trigger the alarm when the real-time value of the discrimination parameter exceeds a preset value, preferably the alarm is a display alarm and/or an audible alarm. The discrimination unit of the present application may be provided separately or may be integrated within an engine electronic control unit of the vehicle.
According to another aspect of the present application, there is provided a method for discriminating whether a target module or component of a urea injection system of a vehicle is an original module or component, wherein the urea injection system comprises a urea supply module and a urea injection module, the method comprising:
energizing the target module or component;
measuring real-time values of the spurious parameters of the target module or component in real time;
the actual duration which is sustained after the target module or the component is electrified is counted;
and when the actual time length reaches the preset fake distinguishing time length for the target module or component, comparing the actual value of the fake distinguishing parameter with a preset value, and when the real-time value of the fake distinguishing parameter exceeds the preset value, judging that the target module or component is at risk of being a non-original module or component.
In one embodiment, the method of identifying a fake further comprises the step of triggering an alarm when the real-time value of the identifying parameter exceeds a preset value, preferably the alarm is a display alarm and/or an audible alarm. The present spurious identification method may be performed during a self-test performed at vehicle start-up or in response to the actual needs of the customer.
With the fake-identifying method and the fake-identifying unit of the application, a customer can identify important modules or components of the urea injection system periodically or aperiodically under any necessary condition considered by the customer every time the vehicle is started, and timely find unauthorized replacement conditions of the important modules or components. This is not only advantageous in ensuring proper and efficient operation or functioning of the important modules or components, the other components or modules associated therewith, and even the whole urea injection system, but also in ensuring their normal service life, thus minimizing pollution of the vehicle exhaust to the environment.
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The above and other features and advantages of the present application will be more fully appreciated and understood by those skilled in the art upon reading the detailed description of the embodiments of the application given with reference to the accompanying drawings. The drawings are for illustration and schematic purposes only and are not intended to limit the scope of the present application. Wherein:
FIG. 1 illustrates a temperature profile of an original urea supply module and a non-original urea supply module for a vehicle urea injection system over time after a heater of the original urea supply module is energized;
FIG. 2 is a simplified flow chart of a method of discriminating between according to the present application; and
fig. 3 is a simplified block diagram of a discrimination unit according to the present application.
Detailed Description
As previously mentioned, the present application provides a verification device and a verification method that are intended to be used to verify the authenticity of a target module or component in a urea injection system. The method can be set as a part of self-checking performed when the vehicle starts, and can also be used for responding to the actual requirement of a user to identify whether a target module or a component of the urea injection system in the vehicle is an original module or a component.
According to the principles of the present application, the method and unit for identifying a false in the present application are based on at least one operating parameter of a target (to be identified) module or component of a urea injection system, and preset identifying duration of an original module or component for the target module or component and a preset value of the operating parameter corresponding to the preset identifying duration are preset and stored. The target module or component is then powered on or activated while the duration of the power on or activation is timed and the real-time value of the operating parameter is measured. When the actual duration of the power-on or activation obtained by timing reaches the preset pseudo-distinguishing duration, comparing the real-time value of the operation parameter with a preset value, if the real-time value exceeds the preset value, judging that the target module or the part has the risk of being a non-original module or part, reminding a worker to check or check in time, and if necessary, combining other conditions to judge; and otherwise, judging the target module or the component to be the original module or the component.
Typically, urea injection systems mainly include a urea supply module, a urea injection module, and other constituent components such as piping. The urea supply module is configured to withdraw urea solution in the urea reservoir, heat and pressurize the withdrawn urea solution, and then deliver the urea solution having a specific pressure and a temperature to the urea injection module. The urea injection module is configured to inject urea solution from the urea supply module into exhaust within the vehicle exhaust conduit at a particular pressure and/or rate. And then, the urea and the oxynitride in the tail gas of the vehicle are subjected to chemical reaction to generate nitrogen and water which have no pollution to the environment, so that the aim of purifying the tail gas of the vehicle is fulfilled. The present application will take the urea supply module and the urea injection module as examples to describe the fake-identifying method and the fake-identifying unit of the present application in detail.
The urea supply module includes a heater for heating the urea solution extracted from the urea reservoir. Curves L1 and L2 shown in fig. 1 represent the temperature variations over time of the heaters themselves of the raw urea supply module and of the non-raw urea supply module, respectively. It can be seen from fig. 1 that for a heater of the as-built urea supply module, the temperature rises slowly from about-40 to about-30 degrees over a heating time of about 1000 seconds, whereas for a heater of the non-as-built urea supply module, the temperature rises relatively quickly from about-40 to about-10 degrees over a heating time of about 1000 seconds, with a large temperature change, especially during the initial about 200 seconds, the rate of rise of temperature is large, and the temperature rises quickly to about-25 degrees.
Based on the study curve of fig. 1, the temperature of the heater itself when it is energized can be used as an operating parameter in a pseudo-discriminating method of the urea supply module, which is measured during the execution of the method.
As shown in fig. 2, the identifying method for the urea supply module includes: step S1 of powering on a heater of the urea supply module to start heating urea solution in the urea supply module; step S2, measuring the temperature of the heater in real time while the heater starts heating; step S3 of starting timing and recording the energizing duration of the heater while the heater starts heating; and a step S4 of comparing the real-time temperature of the heater with the corresponding preset temperature when the actual time length calculated in the step S3 reaches the preset pseudo-distinguishing time length. In the comparing step of step S4, when the real-time temperature exceeds the preset temperature, it is determined that the current urea supply module is at risk of being a non-original urea supply module, and when the real-time temperature does not exceed the preset temperature, it is determined that the current urea supply module is an original urea supply module. Wherein steps S1, S2 and S3 are performed simultaneously.
In other embodiments, the steps S1, S2, S3 may not be performed simultaneously, for example, the step S2 is restarted at a fixed interval after the step S1 is started, and/or the step S3 is restarted at a fixed interval after the step S2 is started.
In some other embodiments, the method further includes a step S5 of triggering an alarm when the real-time temperature exceeds the preset temperature. The alarm may be a display alarm and/or an audible alarm, or may be any other known form of alarm.
In some other embodiments, the method for identifying a fault in an electronic device further includes a step of presetting and storing a preset identifying duration for an original module of the target module and a temperature preset value corresponding to the preset identifying duration, which may be performed before the step S1.
Accordingly, as shown in fig. 3, the pseudo identifying unit of the present application includes: a temperature sensor 10 for measuring the real-time temperature of the heater itself of the urea supply module, which can be any type of temperature sensor known in the art; a timer 20 for counting the duration of the energization of the heater, which may be any type of timer known in the art; a memory 30 for storing the above-mentioned preset pseudo-distinguishing time period and the above-mentioned preset temperature for the original urea supply module; and a controller 40 for communicative connection with the temperature sensor, the timer and the memory. The controller is configured to obtain from the temperature sensor 10 the real-time temperature of the heater itself of the urea supply module; acquiring the duration of the heater energization from the timer 20; obtaining the preset pseudo-distinguishing duration and the preset temperature from the memory 20; when the time length obtained from the timer 20 reaches the preset pseudo-time length, the real-time temperature obtained from the temperature sensor 10 is compared with the preset temperature, and when the real-time temperature exceeds the preset temperature, the risk of the current urea supply module being a non-original urea supply module is judged, otherwise, the current urea supply module is determined to be the original urea supply module.
As can be seen from the graph of fig. 1, the preset identification time period for the urea supply module may be less than 1000 seconds, for example, 100 seconds, 200 seconds, 300 seconds, 400 seconds … … seconds. For example, when the preset pseudo-discrimination time period is 200 seconds, the corresponding predetermined temperature may be-37 degrees; when the preset pseudo-distinguishing duration is 500 seconds, the corresponding preset temperature can be-36 degrees; when the preset time length for distinguishing the false is 900 seconds, the corresponding preset temperature can be-30 degrees.
In other embodiments, the counterfeit discrimination unit of the present application includes an alarm 50, which may be an audible alarm and/or a visual alarm, or any other type of alarm. The controller may be configured to be communicatively coupled to the alarm and to trigger the alarm when the real-time temperature exceeds the preset temperature.
As mentioned above, the identification process for the urea supply module of the urea injection system of the vehicle can be performed on the basis of the real-time temperature of its heater itself at power-on, and accordingly the identification unit of the present application comprises a sensor 10 for measuring the real-time parameter value of this operating parameter. However, it will be appreciated by those skilled in the art that the operating parameters used to perform the pseudo-functionality of the urea supply module may be any other parameters than the real-time temperature of the heater that are capable of distinguishing between an off-the-shelf urea supply module and an off-the-shelf urea supply module, and the operating parameters used for the pseudo-process are not particularly limited herein.
It will also be appreciated by those skilled in the art that the discrimination may be performed using a method similar to the previously described discrimination method for different target modules or components using different operating parameters. For example, for the urea injection module of the urea injection system mentioned above, the resistance of the winding coil of the electromagnetic injection valve of the urea injection module can be used as a spurious parameter.
Thus, the method for identifying the urea injection module comprises the following steps: energizing a winding coil of an electromagnetic injection valve of the urea injection module; measuring the resistance of the winding coil in real time while energizing the winding coil; a step of counting a duration of energization of the winding coil while energizing the winding coil; and comparing the measured real-time resistance with the corresponding preset resistance when the actual power-on duration obtained by timing reaches the preset pseudo-distinguishing duration for the urea injection module. In the comparing step, when the real-time resistance exceeds the preset resistance, judging that the current urea injection module is at risk of being an unfinished urea injection module, and when the real-time resistance does not exceed the preset resistance, determining that the current urea injection module is the unfinished urea injection module.
In some other embodiments, the preset identification period for the urea injection module may be 5 minutes.
In correspondence with the present method, the identification unit for the urea injection module may comprise a resistor instead of a temperature sensor as described above in relation to the urea supply module, the other constituent parts of the identification unit being substantially identical to the identification unit for the urea supply module and will not be described in detail here.
The method and unit for identifying a false from the present application are described in detail above taking the urea supply module and the urea injection module of the urea injection system as examples, it should be understood that the target modules applicable to the method and unit for identifying a false from the present application are not limited to the urea injection module and the urea supply module listed above, but may include any other component or module other than both; the operating parameters of the discrimination methods and units suitable for use in the present application are also not limited to the temperatures or resistances listed above, but may include any parameter or combination of parameters that are capable of distinguishing between an original module or component and a non-original module or component.
The identification unit according to the present application may be a unit provided separately for this purpose or may be integrated into the engine electronic control unit of the vehicle. The constituent components of the measurement sensor (e.g., temperature or resistance sensor), memory, timer, etc. included in the discrimination unit may be provided separately for this purpose or may be shared with other functional systems of the vehicle.
With the inventive method and unit for identifying false positives, a customer is able to perform false identification of important modules or components of the urea injection system periodically, or aperiodically in any case where the customer deems necessary, at every routine safety check of the vehicle at the time of starting the vehicle, and to discover timely an unauthorized replacement situation of the important modules or components. For this important module or component, other components or modules associated therewith, and even the entire urea injection system, not only is normal, efficient operation or functioning ensured, but also their normal service life is ensured, minimizing pollution of the vehicle exhaust to the environment.
The present application is illustrated and described based on particularly preferred embodiments, but is not limited to the details shown and described. Rather, various modifications or changes may be made without departing from the spirit and scope as defined by the appended claims.
Claims (12)
1. A verification unit for distinguishing whether a target module or component of a urea injection system of a vehicle is an original module or component, wherein the urea injection system comprises a urea supply module and a urea injection module, the verification unit comprising:
measuring means for measuring a real-time value of a spurious parameter of the target module or component;
the timer is used for timing the duration of time which is sustained after the target module or the component is activated;
the memory is used for storing preset fake distinguishing duration for the target module or the component and preset values of fake distinguishing parameters corresponding to the preset fake distinguishing duration; and
a controller in communication with the measurement device, the timer, and the memory, the controller configured to: acquiring a real-time value of the pseudo-distinguishing parameter from the measuring device; acquiring the actual duration of the target module or component after the target module or component is electrified from the timer; acquiring the preset distinguishing duration and the corresponding preset value of the distinguishing parameter from the memory; and comparing the real-time value of the fake-distinguishing parameter with the preset value when the actual time length reaches the preset fake-distinguishing time length, and judging that the target module or component is at risk of being a non-original module or component when the real-time value of the fake-distinguishing parameter exceeds the preset value.
2. The discrimination unit of claim 1, wherein the target module or component is a urea supply module and the discrimination parameter is a real-time temperature of a heater of the urea supply module; or the target module or component is a urea injection module and the spurious-identifying parameter is the resistance of a winding coil of an electromagnetic injection valve of the urea injection module.
3. The discrimination unit of claim 1, wherein the target module or component is a urea supply module, the preset discrimination duration is 200 seconds, 500 seconds, or 900 seconds, and the preset value of the discrimination parameter is-37 degrees, -36 degrees, or-30 degrees; or the target module or component is a urea injection module, and the preset pseudo-distinguishing duration is 5 minutes.
4. A pseudo-discrimination unit according to any one of claims 1 to 3, further comprising an alarm communicatively connected to the controller, the controller being configured to trigger the alarm when the real-time value of the pseudo-discrimination parameter exceeds a preset value.
5. The discrimination unit of claim 4, wherein the alarm is a display alarm and/or an audible alarm.
6. A false-proof unit according to any one of claims 1-3, wherein the false-proof unit is integrated within an engine electronic control unit of a vehicle.
7. A method for discriminating whether a target module or component of a urea injection system of a vehicle is an original module or component, wherein the urea injection system comprises a urea supply module and a urea injection module, the method comprising:
energizing the target module or component;
measuring real-time values of the spurious parameters of the target module or component in real time;
the actual duration which is sustained after the target module or the component is electrified is counted;
and when the actual time length reaches the preset fake distinguishing time length for the target module or component, comparing the actual value of the fake distinguishing parameter with a preset value, and when the real-time value of the fake distinguishing parameter exceeds the preset value, judging that the target module or component is at risk of being a non-original module or component.
8. The method of claim 7, wherein the target module or component is a urea supply module and the spurious parameter is a real-time temperature of a heater of the urea supply module; or the target module or component is a urea injection module and the spurious-identifying parameter is the resistance of a winding coil of an electromagnetic injection valve of the urea injection module.
9. The method of claim 8, wherein the target module or component is a urea supply module, the preset time period of discrimination is 200 seconds, 500 seconds or 900 seconds, and the preset value of the discrimination parameter is-37, -36 or-30 degrees; or the target module or component is a urea injection module, and the preset pseudo-distinguishing duration is 5 minutes.
10. A method of discriminating as defined in claim 8 or 9, further comprising the step of triggering an alarm when the real time value of the discriminating parameter exceeds a preset value.
11. The method of claim 10, wherein the alarm is a display alarm and/or an audible alarm.
12. The discrimination method of claim 8 or 9, wherein the discrimination method is performed during a self-test performed at vehicle start-up or in response to a customer's actual need.
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| JPH1069139A (en) * | 1996-08-29 | 1998-03-10 | Omron Corp | Genuine renewal part identification device |
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| CN107341425A (en) * | 2017-07-13 | 2017-11-10 | 重庆炬野科技发展有限公司 | Portable automobile part special anti-counterfeiting equipment |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2012142745A1 (en) * | 2011-04-19 | 2012-10-26 | 潍柴动力股份有限公司 | Device and method for controlling urea injection system of diesel engine |
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Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| JPH1069139A (en) * | 1996-08-29 | 1998-03-10 | Omron Corp | Genuine renewal part identification device |
| CN102869972A (en) * | 2010-03-09 | 2013-01-09 | 康明斯过滤Ip公司 | Apparatus, system and method for detecting the presence of genuine serviceable product components |
| CN107341425A (en) * | 2017-07-13 | 2017-11-10 | 重庆炬野科技发展有限公司 | Portable automobile part special anti-counterfeiting equipment |
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