CN110542493A - Method for measuring automobile exhaust temperature - Google Patents
Method for measuring automobile exhaust temperature Download PDFInfo
- Publication number
- CN110542493A CN110542493A CN201910790587.3A CN201910790587A CN110542493A CN 110542493 A CN110542493 A CN 110542493A CN 201910790587 A CN201910790587 A CN 201910790587A CN 110542493 A CN110542493 A CN 110542493A
- Authority
- CN
- China
- Prior art keywords
- thermocouple
- temperature
- exhaust
- exhaust pipe
- measuring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K1/00—Details of thermometers not specially adapted for particular types of thermometer
- G01K1/14—Supports; Fastening devices; Arrangements for mounting thermometers in particular locations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K13/00—Thermometers specially adapted for specific purposes
- G01K13/02—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow
- G01K13/024—Thermometers specially adapted for specific purposes for measuring temperature of moving fluids or granular materials capable of flow of moving gases
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
- G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
- G01K7/02—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using thermoelectric elements, e.g. thermocouples
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Sampling And Sample Adjustment (AREA)
- Measuring Temperature Or Quantity Of Heat (AREA)
Abstract
The invention discloses a method for measuring the exhaust temperature of an automobile, which is characterized by comprising the following steps: the end part of the thermocouple is fixedly connected to the outer surface of the exhaust pipe through a connecting sheet and used for detecting the temperature of the surface of the exhaust pipe; the exhaust pipe is provided with a mounting hole, the thermocouple seat is fixedly connected in the mounting hole, and the thermocouple is inserted into the exhaust pipe from the thermocouple seat and is used for detecting the exhaust gas temperature in the exhaust pipe. The method for measuring the exhaust temperature of the automobile has the advantages of low detection cost, convenience in installation and use, capability of accurately measuring the temperature of the exhaust system and good application prospect.
Description
Technical Field
The invention belongs to the technical field of automobiles, and particularly relates to a method for measuring the exhaust temperature of an automobile.
Background
The current method for testing the temperature distribution of the exhaust system has various and non-standard types and large error range of test data. The current testing method is inconvenient for secondary utilization of the thermocouple and high in testing cost. Because of the influence of objective factors, the temperature distribution of an automobile exhaust system cannot be accurately grasped, and the thermal protection measures of automobile parts are often over-designed or improperly designed, so that the cost of a single vehicle is additionally increased or potential safety hazards exist during the operation of the vehicle.
Disclosure of Invention
The invention aims to solve the problems in the prior art and provides a method for measuring the exhaust temperature of an automobile, which has low detection cost and can accurately measure the temperature of an exhaust system.
In order to achieve the purpose, the invention adopts the technical scheme that: the method for measuring the exhaust temperature of the automobile is characterized in that: the end part of the thermocouple is fixedly connected to the outer surface of the exhaust pipe through a connecting sheet and used for detecting the temperature of the surface of the exhaust pipe; the exhaust pipe is provided with a mounting hole, the thermocouple seat is fixedly connected in the mounting hole, and the thermocouple is inserted into the exhaust pipe from the thermocouple seat and is used for detecting the exhaust gas temperature in the exhaust pipe.
In order to make the technical scheme more detailed and concrete, the invention also provides the following further preferable technical scheme to obtain satisfactory practical effect:
And polishing the metal temperature measuring probe of the thermocouple on the outer surface of the exhaust pipe into a wedge shape.
The connecting piece is 20mm square cut by 1mm thin steel sheet.
And welding the connecting sheet to the exhaust pipe through a spot welder, and arranging a metal temperature measuring probe of the thermocouple between the connecting sheet and the outer surface of the exhaust pipe.
The thermocouple seat comprises a mounting seat connected in the mounting hole, and the mounting seat is connected to the exhaust pipe through sealing welding.
The mounting seat is provided with a connecting rod, and the connecting rod and the mounting seat are provided with through holes for penetrating the thermocouple.
One end of the connecting rod is connected to the mounting seat through threads, and the other end of the connecting rod is provided with a fastening nut.
Compared with the prior art, the invention has the following advantages: the method for measuring the exhaust temperature of the automobile has low detection cost, can accurately measure the temperature of the exhaust system, and has better application prospect.
Drawings
The contents of the drawings and the reference numerals in the drawings of the present specification will be briefly described as follows:
FIG. 1 is a schematic view of a thermocouple holder according to the present invention.
FIG. 2 is a schematic view of a thermocouple holder according to the present invention.
In the drawings, the reference numbers: 1. thermocouple seat, 11, mount pad, 12, connecting rod, 13, fastening nut.
Detailed Description
The following description of the embodiments of the present invention will be made in detail with reference to the accompanying drawings.
The method for measuring the exhaust temperature of the automobile, provided by the invention, is characterized in that the end part of the thermocouple is fixedly connected to the outer surface of the exhaust pipe through the connecting sheet and is used for detecting the temperature of the surface of the exhaust pipeline; the exhaust pipe is provided with a mounting hole, the thermocouple seat 1 is fixedly connected in the mounting hole, and a thermocouple is inserted into the exhaust pipe from the thermocouple seat and is used for detecting the exhaust gas temperature in the exhaust pipe. The temperature of the surface of the exhaust pipeline can be detected through a thermocouple tightly attached to the outer surface of the exhaust pipe, and the thermocouple is fixedly connected through a connecting sheet so as to isolate external influence and ensure the detection accuracy; the thermocouple is fixed through the thermocouple seat 1 and stretches into the interior of the exhaust pipe, so that the installation and the arrangement are convenient, the structure is simplified, and the cost is low.
According to the invention, the metal temperature measuring probe of the thermocouple on the outer surface of the exhaust pipe is polished into a wedge shape, the wedge shape is attached to the outer surface of the exhaust pipe, so that stable attachment is ensured, the contact area is increased, and accurate detection is ensured by welding and fixing through the connecting sheet.
In the embodiment of the invention, the connecting piece is used in cooperation with the thermocouple, and is a square with the thickness of 20mm by 20mm cut from a 1mm thin steel sheet, so that the stable and effective connection between the probe end of the thermocouple and the surface of the exhaust pipe can be ensured. And welding the connecting sheet to the exhaust pipe by a spot welding machine, and arranging a metal temperature measuring probe of the thermocouple between the connecting sheet and the outer surface of the exhaust pipe.
In the invention, the thermocouple seat 1 comprises a mounting seat 11 connected in a mounting hole, and the mounting seat 11 is connected on the exhaust pipe through sealing welding. The mounting base 11 is provided with a connecting rod 12, and the connecting rod 12 and the mounting base 11 are provided with through holes for penetrating the thermocouple. One end of the connecting rod 12 is connected to the mounting base 11 through a thread, and the other end is provided with a fastening nut 13. When the thermocouple probe is used, a thermocouple is inserted into the three-way catalyst of the exhaust pipe from the welded thermocouple seat 1, the thermocouple probe is ensured to be positioned at the center of the three-way catalyst and fastened by the fastening nut 13, and the thermocouple probe is used for measuring the exhaust gas temperature at the center of the exhaust pipe.
In the invention, the connecting rod 12 is connected to the mounting base 11 through threads, so that the installation and the connection are convenient, and meanwhile, the connecting rod can be properly used for adjusting and controlling the insertion position of a thermocouple to meet the measurement requirement.
The thermocouple can directly measure the temperature, converts the temperature signal into a thermal electromotive force signal, converts the thermal electromotive force signal into the temperature of a measured medium through an electric instrument, and can be usually matched with a display instrument and a recording instrument for displaying the measured temperature.
The invention relates to a method for measuring the exhaust temperature of an automobile, which is mainly used for detecting the surface temperature of an exhaust pipe and the temperature of exhaust gas in the exhaust pipe for subsequent analysis and debugging.
Testing the surface temperature of the exhaust system: and arranging the thermocouples in a spot welding and steel sheet mode. The connecting sheet is a square with the thickness of 1mm and cut into 20mm x 20mm, and the metal temperature measuring probe of the thermocouple is polished into a wedge shape. The thermocouple probe was fixed to the outer surface of the exhaust pipe using a spot welder and a square steel plate to measure the temperature of the surface of the exhaust pipe.
Testing the internal gas temperature of the exhaust system: and arranging the thermocouples in a perforation and sealing mode. Drilling a hole at a preset position of the exhaust pipeline by using a phi 10 drill bit, and welding a specially-made thermocouple seat at the position of the drilled hole. And a thermocouple is inserted into the three-way catalytic converter from the welded thermocouple seat 1, so that a thermocouple probe is ensured to be positioned at the center of the three-way catalytic converter and is fastened by a fastening nut, and the thermocouple probe is used for measuring the exhaust gas temperature at the center of an exhaust pipeline.
The method for measuring the exhaust temperature of the automobile has the advantages of low detection cost, convenience in installation and use, capability of accurately measuring the temperature of the exhaust system and good application prospect.
The invention has been described above with reference to the accompanying drawings, but the invention is not limited to the above-described embodiments, and it is within the scope of the invention to use various insubstantial modifications of the inventive concept and solutions or to apply them directly to other applications.
Claims (7)
1. A method of measuring the temperature of an automobile exhaust, comprising: the end part of the thermocouple is fixedly connected to the outer surface of the exhaust pipe through a connecting sheet and used for detecting the temperature of the surface of the exhaust pipe; the exhaust pipe is provided with a mounting hole, the thermocouple seat is fixedly connected in the mounting hole, and the thermocouple is inserted into the exhaust pipe from the thermocouple seat and is used for detecting the exhaust gas temperature in the exhaust pipe.
2. The method of measuring an exhaust temperature of a vehicle according to claim 1, wherein: and polishing the metal temperature measuring probe of the thermocouple on the outer surface of the exhaust pipe into a wedge shape.
3. The method of measuring an exhaust temperature of a vehicle according to claim 2, wherein: the connecting piece is 20mm square cut by 1mm thin steel sheet.
4. a method of measuring the temperature of an automobile exhaust gas according to claim 3, wherein: and welding the connecting sheet to the exhaust pipe through a spot welder, and arranging a metal temperature measuring probe of the thermocouple between the connecting sheet and the outer surface of the exhaust pipe.
5. The method of measuring an exhaust temperature of a vehicle according to claim 1, wherein: the thermocouple seat comprises a mounting seat connected in the mounting hole, and the mounting seat is connected to the exhaust pipe through sealing welding.
6. The method of measuring an exhaust temperature of a vehicle according to claim 5, wherein: the mounting seat is provided with a connecting rod, and the connecting rod and the mounting seat are provided with through holes for penetrating the thermocouple.
7. The method of measuring an exhaust temperature of a vehicle according to claim 6, wherein: one end of the connecting rod is connected to the mounting seat through threads, and the other end of the connecting rod is provided with a fastening nut.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790587.3A CN110542493A (en) | 2019-08-26 | 2019-08-26 | Method for measuring automobile exhaust temperature |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910790587.3A CN110542493A (en) | 2019-08-26 | 2019-08-26 | Method for measuring automobile exhaust temperature |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110542493A true CN110542493A (en) | 2019-12-06 |
Family
ID=68712060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910790587.3A Pending CN110542493A (en) | 2019-08-26 | 2019-08-26 | Method for measuring automobile exhaust temperature |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110542493A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240806A (en) * | 2020-09-10 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Surface temperature measuring device for automobile exhaust pipe |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607037U (en) * | 1983-06-27 | 1985-01-18 | 株式会社 日本気化器製作所 | temperature detector |
| CN1122447A (en) * | 1994-09-02 | 1996-05-15 | Abb管理有限公司 | High temperature detecting head |
| CN101657705A (en) * | 2007-04-16 | 2010-02-24 | 株式会社电装 | Temperature sensor |
| CN201688924U (en) * | 2009-06-03 | 2010-12-29 | 张伟 | PT 200 temperature sensor special for measuring automobile engine and tail gas |
| CN203350042U (en) * | 2013-05-13 | 2013-12-18 | 广州汽车集团股份有限公司 | Measuring device for temperature or pressure of exhaust system of engine |
| CN103726965A (en) * | 2013-11-19 | 2014-04-16 | 大连民族学院 | Novel device for visible-combustion experiment |
| CN205209649U (en) * | 2015-10-30 | 2016-05-04 | 上汽通用汽车有限公司 | Temperature sensor |
-
2019
- 2019-08-26 CN CN201910790587.3A patent/CN110542493A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS607037U (en) * | 1983-06-27 | 1985-01-18 | 株式会社 日本気化器製作所 | temperature detector |
| CN1122447A (en) * | 1994-09-02 | 1996-05-15 | Abb管理有限公司 | High temperature detecting head |
| CN101657705A (en) * | 2007-04-16 | 2010-02-24 | 株式会社电装 | Temperature sensor |
| CN201688924U (en) * | 2009-06-03 | 2010-12-29 | 张伟 | PT 200 temperature sensor special for measuring automobile engine and tail gas |
| CN203350042U (en) * | 2013-05-13 | 2013-12-18 | 广州汽车集团股份有限公司 | Measuring device for temperature or pressure of exhaust system of engine |
| CN103726965A (en) * | 2013-11-19 | 2014-04-16 | 大连民族学院 | Novel device for visible-combustion experiment |
| CN205209649U (en) * | 2015-10-30 | 2016-05-04 | 上汽通用汽车有限公司 | Temperature sensor |
Non-Patent Citations (1)
| Title |
|---|
| 《传感器与敏感元件标准选编》编委会: "《传感器与敏感元件标准选编》", 31 December 1989, 机械工业标准化技术服务部 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112240806A (en) * | 2020-09-10 | 2021-01-19 | 北京新能源汽车技术创新中心有限公司 | Surface temperature measuring device for automobile exhaust pipe |
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| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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Application publication date: 20191206 |