CN112729490A - Vehicle urea tank liquid level calibration method and system and vehicle ECU - Google Patents
Vehicle urea tank liquid level calibration method and system and vehicle ECU Download PDFInfo
- Publication number
- CN112729490A CN112729490A CN202110040256.5A CN202110040256A CN112729490A CN 112729490 A CN112729490 A CN 112729490A CN 202110040256 A CN202110040256 A CN 202110040256A CN 112729490 A CN112729490 A CN 112729490A
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- China
- Prior art keywords
- vehicle
- urea tank
- liquid level
- urea
- corresponding relation
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- 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.)
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- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000004202 carbamide Substances 0.000 title claims abstract description 57
- 239000007788 liquid Substances 0.000 title claims abstract description 33
- 238000000034 method Methods 0.000 title claims abstract description 16
- 230000004044 response Effects 0.000 claims description 2
- 238000005259 measurement Methods 0.000 abstract description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 9
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000003054 catalyst Substances 0.000 description 1
- 238000010531 catalytic reduction reaction Methods 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000004134 energy conservation Methods 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 230000007062 hydrolysis Effects 0.000 description 1
- 238000006460 hydrolysis reaction Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 238000006722 reduction reaction Methods 0.000 description 1
Images
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Exhaust Gas After Treatment (AREA)
- Measurement Of Levels Of Liquids Or Fluent Solid Materials (AREA)
Abstract
The invention provides a method and a system for calibrating the liquid level of a vehicle urea tank and a vehicle ECU (electronic control Unit), which can determine the corresponding relation between the output value of a liquid level sensor of the vehicle urea tank and the actual liquid level value according to the urea tank information input by a user, further calibrate the urea tank through the corresponding relation, avoid the problems of time consumption and easy error caused by manual measurement, and improve the efficiency.
Description
Technical Field
The invention belongs to the technical field of vehicle diagnosis, and particularly relates to a method and a system for calibrating a liquid level of a vehicle urea tank and a vehicle ECU (electronic control unit).
Background
The urea box is used for carrying out catalytic reduction treatment on nitrogen oxides in the tail gas emission of the diesel vehicle, so that the nitrogen oxides meet the emission standard, and the purposes of energy conservation and emission reduction are achieved. The currently adopted method is an SCR strategy, in which urea aqueous solution is used as a reducing agent to produce ammonia by hydrolysis, and nitrogen oxides are converted into clean nitrogen and oxygen under the action of a catalyst.
At present, the output value of the existing urea box liquid level sensor in the market has a one-to-one correspondence relation with the actual height of the liquid level in the urea box, for example, a dry spring tube structure is connected with a plurality of resistors in parallel, and the actual height of the liquid level can be converted through the output resistance value of the resistors. The matching relations between the output values of the liquid level sensors of the urea tanks with different models and the actual heights of the liquid levels are different, however, the matching relations stored in the vehicle ECU are always in one-to-one correspondence with the vehicle models, and when the vehicles are replaced by the urea tanks with other models, the matching relations need to be re-calibrated in a manual measurement mode, so that the mode is time-consuming and is easy to cause errors.
Disclosure of Invention
Based on the technical problem, a vehicle urea tank liquid level calibration method and system and a vehicle ECU are provided.
In order to solve the technical problems, the invention adopts the following technical scheme:
in one aspect, a method for calibrating the liquid level of a vehicle urea tank is provided, which comprises the following steps:
determining a first corresponding relation between a liquid level sensor output value and an actual liquid level value of a vehicle urea tank in response to urea tank information input by a user;
and calibrating the vehicle urea box according to the first corresponding relation.
In another aspect, a vehicle urea tank level calibration system is provided, comprising a storage module including instructions loaded and executed by a processor, the instructions, when executed, causing the processor to perform a vehicle urea tank level calibration method as described above.
In still another aspect, a vehicle ECU is provided having a vehicle urea tank level calibration system as described above.
According to the invention, the corresponding relation between the output value of the liquid level sensor of the vehicle urea tank and the actual liquid level value can be determined according to the urea tank information input by a user, and then the urea tank is calibrated through the corresponding relation, so that the problems of time consumption and error easily caused by manual measurement are avoided, and the efficiency is improved.
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 specification provides a vehicle urea tank liquid level calibration method, including:
s101, responding to urea tank information input by a user, determining a first corresponding relation between an output value of a liquid level sensor of a vehicle urea tank and an actual liquid level value, specifically, matching the urea tank information with a second corresponding relation between preset urea tank information and the first corresponding relation, and determining the corresponding first corresponding relation.
Preferably, before step S101, the present embodiment further includes:
and responding to the calibration request of the user, and providing an interface for the user to input the information of the urea box.
Specifically, the interface may be in the form of a list of options for the user to enter urea tank information, although other forms are possible.
S102, calibrating the vehicle urea box according to the first corresponding relation, so that a correct actual liquid level value can be obtained according to the output value of the liquid level sensor.
In this embodiment, the urea tank information is a urea tank model.
In an actual application scene, after a user inputs a calibration request, the interface is provided for the user, the user selects the model of the urea box in the interface, the corresponding first corresponding relation can be automatically matched according to the model of the urea box, and then the vehicle urea box is automatically calibrated according to the first corresponding relation.
Based on the same inventive concept, embodiments of the present specification further provide a vehicle urea tank liquid level calibration system, which includes a storage module including instructions loaded and executed by a processor, wherein the instructions, when executed, cause the processor to execute the steps according to various exemplary embodiments of the present invention described in the above section of the vehicle urea tank liquid level calibration method.
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 ECU, and the vehicle ECU has the vehicle urea tank liquid level calibration system, which is not described in detail 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 (7)
1. A vehicle urea tank liquid level calibration method is characterized by comprising the following steps:
determining a first corresponding relation between a liquid level sensor output value and an actual liquid level value of a vehicle urea tank in response to urea tank information input by a user;
and calibrating the vehicle urea box according to the first corresponding relation.
2. The method for calibrating the liquid level of the urea tank of the vehicle as claimed in claim 1, further comprising:
and responding to the calibration request of the user, and providing an interface for the user to input the information of the urea box.
3. The method for calibrating a liquid level in a urea tank of a vehicle as claimed in claim 2, wherein said interface is used for a user to input urea tank information in the form of an option list.
4. A method as claimed in claim 1 or 3, wherein said determining a first corresponding relationship between an output value of a liquid level sensor of a vehicle urea tank and an actual liquid level value further comprises:
and matching the urea box information with a second corresponding relation of the preset urea box information and the first corresponding relation, and determining the corresponding first corresponding relation.
5. The vehicle urea tank liquid level calibration method according to claim 4, wherein the urea tank information is a urea tank model.
6. A vehicle urea tank level calibration system, comprising a memory module including instructions loaded and executed by a processor, the instructions when executed cause the processor to perform a vehicle urea tank level calibration method according to any one of claims 1-5.
7. A vehicle ECU characterized by having a vehicle urea tank level calibration system according to claim 6.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110040256.5A CN112729490A (en) | 2021-01-13 | 2021-01-13 | Vehicle urea tank liquid level calibration method and system and vehicle ECU |
| PCT/CN2021/101452 WO2022151656A1 (en) | 2021-01-13 | 2021-06-22 | Vehicle urea tank liquid level calibration method and system, and vehicle ecu |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110040256.5A CN112729490A (en) | 2021-01-13 | 2021-01-13 | Vehicle urea tank liquid level calibration method and system and vehicle ECU |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112729490A true CN112729490A (en) | 2021-04-30 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110040256.5A Pending CN112729490A (en) | 2021-01-13 | 2021-01-13 | Vehicle urea tank liquid level calibration method and system and vehicle ECU |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN112729490A (en) |
| WO (1) | WO2022151656A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151656A1 (en) * | 2021-01-13 | 2022-07-21 | 上海星融汽车科技有限公司 | Vehicle urea tank liquid level calibration method and system, and vehicle ecu |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727991A (en) * | 2014-01-17 | 2014-04-16 | 北京航空航天大学 | System and method for calibrating oil mass of vehicle oil tank |
| CN106908115A (en) * | 2017-02-24 | 2017-06-30 | 北京中位科技有限公司 | Vehicle fuel tank fuel quantity scaling method and system |
| CN109470338A (en) * | 2018-12-28 | 2019-03-15 | 潍柴动力股份有限公司 | A kind of urea box liquid level scaling method and device |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102011013687B4 (en) * | 2011-03-11 | 2014-10-09 | Continental Automotive Gmbh | Method for calibrating a level sensor |
| CN103527293B (en) * | 2013-10-08 | 2016-07-13 | 潍柴动力股份有限公司 | A kind of method for urea injection control and control unit |
| CN106567767B (en) * | 2016-10-21 | 2019-05-28 | 潍柴动力股份有限公司 | Urea liquid level sensor Failure Control system and method, SCR system and engine |
| CN107525563B (en) * | 2017-06-16 | 2019-10-25 | 常州易控汽车电子股份有限公司 | A kind of resistance-type level transducer measuring circuit and the measuring circuit self-adapting measuring method |
| CN111177691B (en) * | 2019-11-29 | 2022-04-26 | 潍柴动力股份有限公司 | Method and device for setting ECU (electronic control Unit) whole vehicle function permission |
| CN112729490A (en) * | 2021-01-13 | 2021-04-30 | 上海星融汽车科技有限公司 | Vehicle urea tank liquid level calibration method and system and vehicle ECU |
-
2021
- 2021-01-13 CN CN202110040256.5A patent/CN112729490A/en active Pending
- 2021-06-22 WO PCT/CN2021/101452 patent/WO2022151656A1/en active Application Filing
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103727991A (en) * | 2014-01-17 | 2014-04-16 | 北京航空航天大学 | System and method for calibrating oil mass of vehicle oil tank |
| CN106908115A (en) * | 2017-02-24 | 2017-06-30 | 北京中位科技有限公司 | Vehicle fuel tank fuel quantity scaling method and system |
| CN109470338A (en) * | 2018-12-28 | 2019-03-15 | 潍柴动力股份有限公司 | A kind of urea box liquid level scaling method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2022151656A1 (en) * | 2021-01-13 | 2022-07-21 | 上海星融汽车科技有限公司 | Vehicle urea tank liquid level calibration method and system, and vehicle ecu |
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| Publication number | Publication date |
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| WO2022151656A1 (en) | 2022-07-21 |
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Application publication date: 20210430 |
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