CN115371974A - Test method suitable for heat resistance of engine room part - Google Patents
Test method suitable for heat resistance of engine room part Download PDFInfo
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- CN115371974A CN115371974A CN202210992884.8A CN202210992884A CN115371974A CN 115371974 A CN115371974 A CN 115371974A CN 202210992884 A CN202210992884 A CN 202210992884A CN 115371974 A CN115371974 A CN 115371974A
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- 238000010998 test method Methods 0.000 title claims abstract description 23
- 238000012360 testing method Methods 0.000 claims abstract description 59
- 238000000034 method Methods 0.000 claims abstract description 13
- 230000005855 radiation Effects 0.000 claims abstract description 13
- 238000010438 heat treatment Methods 0.000 claims abstract description 7
- 238000013461 design Methods 0.000 claims description 3
- 238000005259 measurement Methods 0.000 claims description 2
- 238000004088 simulation Methods 0.000 claims 1
- 239000004831 Hot glue Substances 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000011521 glass Substances 0.000 description 4
- 229910000831 Steel Inorganic materials 0.000 description 3
- 239000010959 steel Substances 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
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- Testing Resistance To Weather, Investigating Materials By Mechanical Methods (AREA)
Abstract
The invention relates to a test method suitable for heat resistance of parts in a cabin. The method provided by the invention simulates the actual heating state of the cabin, simulates the heat radiation in a single direction, and the test result can reflect the actual state of the part.
Description
Technical Field
The invention relates to a part heat resistance test technology, in particular to a test method suitable for the heat resistance of cabin parts.
Background
The test method of the part environment test is generally to place the part in a test chamber with a specific temperature for testing, but the temperature is uniform around the part of the test chamber, and the heated state of the cabin part such as a cabin decorative plate is a heat source in a single direction emitted from an engine. The heated state was not consistent with the state in the test chamber. The experimental method simulates the actual heating state of the engine room, simulates heat radiation in a single direction, and the test result can reflect the actual state of the part.
The phenomenon of thermal deformation appears after a certain motorcycle type cabin decorative board road test, so when placing new part in the test box and testing, part fault phenomenon does not reappear, and through the test box and the environment that the part is located and compare the discovery, the temperature is even unanimous around the part in the test box, and the cabin part heat receiving state of camera cabin decorative board etc. is the heat source of the single direction that sends from the engine. The heated state was not consistent with the state in the test chamber. The experimental method simulates the actual heating state of the engine room, simulates heat radiation in a single direction, and the test result can reflect the actual state of the part.
Patent document 1 (CN 101825546A) discloses a method for testing heat resistance of a glass tabletop, which uses a thermal coincidence block to simulate high-temperature food placed on a dining table, can simply and quickly test the heat resistance of the tabletop or turntable glass under high-temperature conditions that may be met, and can better distinguish high-quality glass from low-quality glass. The test subjects and test methods are completely different from those of the present invention.
Patent document 2 (CN 111982554A) relates to the technical field of heat exchange equipment, and particularly relates to intercooler heat resistance test equipment and an intercooler heat resistance test method, wherein the intercooler heat resistance test equipment comprises an air inlet pipeline assembly and an air outlet pipeline, the air inlet pipeline assembly is used for being connected with an inlet of a core body, and the air outlet pipeline is used for being connected with an outlet of the core body; still include the heat sink, the heat sink is used for with coolant action the surface of core. The application aims to solve the problem that a conventional intercooler heat-resisting test method is long in test period, and provides intercooler heat-resisting test equipment and an intercooler heat-resisting test method. The test subjects and the test methods are completely different from those of the present invention.
Patent document 3 (CN 104111199B) discloses a method and a device for testing the heat resistance of a hot melt adhesive, and belongs to the technical field of hot melt adhesive performance testing. The steel wire is embedded into corresponding grooves respectively, one end of a connecting piece of the rubber block fixing clamp is fixed on a lower clamp holder of a tensile testing machine, the steel wire at the other end is connected to an upper clamp holder of the tensile testing machine, the force for pulling out the rubber block from the steel wire is tested at different temperatures respectively at the same tensile speed, and the heat resistance of the rubber block is judged according to the change degree of the force. The method is scientific and accurate, has high feasibility, is simple and easy to operate, can objectively and vividly show the resistance performance of the hot melt adhesive, fills a gap in a domestic hot melt adhesive heat resistance evaluation system, adds a very valuable test method, and is suitable for popularization and application. The test subjects and the test methods are completely different from those of the present invention.
Disclosure of Invention
The invention aims to solve the technical problem of overcoming the problems in the prior art and provides a test method suitable for the heat resistance of cabin parts.
It is noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
In order to solve the technical problems, the invention is realized by adopting the following technical scheme:
a test method suitable for heat resistance of engine room parts is used for simulating heat radiation from a real vehicle in a single direction to perform a test and reflecting the actual use state of the parts.
Furthermore, the actual use environment of the part is simulated, and the heat radiation from the single direction of the back surface of the part is set.
Further, when the cabin part is subjected to a heat resistance test, the heating device is placed at the bottom of the part for the test.
Further, the only heat source of the parts in the engine room subjected to heat radiation is the heat of the engine, which is emitted from the bottom to the top.
Further, the part is placed at room temperature in a state of simulating the loading of the vehicle, and a heat source is placed on the back of the part to simulate the heat source in the engine direction.
Further, the temperature of the surface of the part was set based on the temperature measured in the real vehicle, and when the temperature of the surface of the part was made constant by adjusting the temperature of the heat source, the temperature reached 105 °, and then the test was performed.
Furthermore, the deformation of the surface of the part is detected after the test, and the maximum deformation is measured to be 6.3mm.
Furthermore, the actual use temperature of the part is simulated, and CAE analysis is carried out at the early stage of design.
Compared with the prior art, the invention has the beneficial effects that:
the method provided by the invention simulates the actual heating state of the cabin, simulates the heat radiation in a single direction, and the test result can reflect the actual state of the part.
Drawings
The invention is further described with reference to the accompanying drawings in which:
FIG. 1 is a schematic view of an assembly state of a simulated real vehicle;
FIG. 2 is a schematic illustration of the test method;
FIG. 3 is a schematic of the test temperature and method;
FIG. 4 is a schematic view of the state of the parts after the test.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are illustrative of some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. Embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be taken as limiting the scope of the present invention.
The invention is described in detail below with reference to the attached drawing figures:
referring to fig. 2, the only heat source of the parts in the engine room subjected to heat radiation is the heat of the engine, which is emitted from bottom to top, so that the heat resistance test of the parts in the engine room should be performed according to the characteristic, and the heating equipment is placed at the bottom of the parts for the test.
The specific test scheme is as follows:
placing the part in a room temperature in a simulated loading state;
fig. 1 schematically shows that only the mounting points around the area are assembled because the deformation state between the two mounting points a and B is detected and tooling resources are lacked.
The heat source is placed on the back of the part, the heat source in the direction of an engine is simulated, the temperature of the surface of the part is set according to the temperature of the area measured by a real vehicle or analyzed by CAE, the highest temperature of the real vehicle is about 105 ℃ when the real vehicle measures the idle speed, so that the temperature reaches 105 ℃ when the temperature of the surface of the part is constant by adjusting the temperature of the heat source, and then the test is carried out according to the figure 3.
Referring to fig. 4, after the test, the deformation of the surface of the part is detected, and the maximum deformation of a certain vehicle actually measured is 6.3mm.
Because the part deformation occurs after the road test of the real vehicle, before the test, the part is placed in a test box for three times of tests, the first test temperature is 105 ℃ (simulating the real vehicle measurement temperature), the test is carried out according to the test cycle of figure 3, the second test temperature is 120 ℃, the test is carried out according to the test cycle of figure 3, the third test temperature is 120 ℃, the part is placed in the test box for 12 hours, and the part is not deformed. The test method verifies that the part is thermally deformed at the set temperature, and the deformation is large.
Therefore, the actual use state of the part can be reflected only when the test is carried out by simulating the heat radiation from the real vehicle in a single direction.
The invention simulates the actual use temperature of the part, and the design early stage can be analyzed by CAE.
The invention simulates the actual use environment of the part and the heat radiation from the single direction of the back of the part.
The above description is only for the purpose of illustrating the present invention and the appended claims are not to be construed as limiting the scope of the invention, which is intended to cover all modifications, equivalents and improvements that are within the spirit and scope of the invention as defined by the appended claims. And those not described in detail in this specification are well within the skill of those in the art.
Claims (8)
1. A test method suitable for heat resistance of cabin parts is characterized by comprising the following steps: the heat radiation from the single direction of the real vehicle is simulated for testing, and the actual using state of the part is reflected.
2. The test method for the heat resistance of the cabin part, according to claim 1, is characterized in that:
simulating the actual use environment of the part and setting the heat radiation from the single direction of the back surface of the part.
3. The test method for the heat resistance of the cabin part, according to claim 2, is characterized in that:
when the cabin part is subjected to a heat resistance test, the heating equipment is placed at the bottom of the part for testing.
4. The test method for the heat resistance of the cabin part according to claim 3, wherein the test method comprises the following steps:
the only heat source of the parts in the engine room subjected to heat radiation is the heat of the engine, and the heat of the engine is radiated from bottom to top.
5. The method for testing the heat resistance of the cabin part according to claim 4, wherein the method comprises the following steps:
the part is placed in a room temperature in a loading simulation state, and a heat source is placed on the back of the part to simulate the heat source in the direction of an engine.
6. The test method for the heat resistance of the cabin part, according to claim 5, is characterized in that:
the temperature of the surface of the part is set according to the temperature measured by the real vehicle, and when the temperature of the surface of the part is constant by adjusting the temperature of the heat source, the temperature reaches 105 degrees, and then the test is carried out.
7. The test method for the heat resistance of the cabin part, according to claim 6, is characterized in that:
and detecting the deformation of the surface of the part after the test, wherein the maximum deformation is 6.3mm in actual measurement.
8. The method for testing the heat resistance of the cabin part according to any one of claims 1 to 7, wherein:
and simulating the actual use temperature of the part, and analyzing by CAE at the early stage of design.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210992884.8A CN115371974A (en) | 2022-08-18 | 2022-08-18 | Test method suitable for heat resistance of engine room part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210992884.8A CN115371974A (en) | 2022-08-18 | 2022-08-18 | Test method suitable for heat resistance of engine room part |
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| CN115371974A true CN115371974A (en) | 2022-11-22 |
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| CN202210992884.8A Pending CN115371974A (en) | 2022-08-18 | 2022-08-18 | Test method suitable for heat resistance of engine room part |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980046292A (en) * | 1996-12-12 | 1998-09-15 | 박병재 | Deformation test apparatus for plastic parts by radiant heat transfer |
| JP2003315253A (en) * | 2002-04-26 | 2003-11-06 | Toshiba Corp | Durability testing method of coating member and test device therefor |
| CN104568464A (en) * | 2014-12-29 | 2015-04-29 | 广电计量检测（天津）有限公司 | Thermal radiation test bench for engine armor and controlling method thereof |
| CN113325251A (en) * | 2021-05-11 | 2021-08-31 | 一汽奔腾轿车有限公司 | Method and system for testing matching degree of fuse and wire for automobile wire harness |
| CN113686587A (en) * | 2021-07-08 | 2021-11-23 | 中汽研新能源汽车检验中心(天津)有限公司 | Be used for pure electronic passenger car heat management coupling capability test system |
-
2022
- 2022-08-18 CN CN202210992884.8A patent/CN115371974A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR19980046292A (en) * | 1996-12-12 | 1998-09-15 | 박병재 | Deformation test apparatus for plastic parts by radiant heat transfer |
| JP2003315253A (en) * | 2002-04-26 | 2003-11-06 | Toshiba Corp | Durability testing method of coating member and test device therefor |
| CN104568464A (en) * | 2014-12-29 | 2015-04-29 | 广电计量检测（天津）有限公司 | Thermal radiation test bench for engine armor and controlling method thereof |
| CN113325251A (en) * | 2021-05-11 | 2021-08-31 | 一汽奔腾轿车有限公司 | Method and system for testing matching degree of fuse and wire for automobile wire harness |
| CN113686587A (en) * | 2021-07-08 | 2021-11-23 | 中汽研新能源汽车检验中心(天津)有限公司 | Be used for pure electronic passenger car heat management coupling capability test system |
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