CN116337480A - Method for acquiring related data of heat insulation performance of driving cabin - Google Patents

Method for acquiring related data of heat insulation performance of driving cabin Download PDF

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Publication number
CN116337480A
CN116337480A CN202310403142.1A CN202310403142A CN116337480A CN 116337480 A CN116337480 A CN 116337480A CN 202310403142 A CN202310403142 A CN 202310403142A CN 116337480 A CN116337480 A CN 116337480A
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temperature
test
test vehicle
insulation performance
vehicle
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王洋
李伟
王卓
孙晓玲
余达淇
李保权
徐阳
郝小琼
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FAW Group Corp
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FAW Group Corp
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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
    • G01M17/00—Testing of vehicles
    • G01M17/007—Wheeled or endless-tracked vehicles
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M99/00—Subject matter not provided for in other groups of this subclass
    • G01M99/002—Thermal testing
    • 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
    • G01N25/20—Investigating or analyzing materials by the use of thermal means by investigating the development of heat, i.e. calorimetry, e.g. by measuring specific heat, by measuring thermal conductivity

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Abstract

The method for collecting the related data of the heat insulation performance of the driving cabin. Belongs to the field of automobile performance analysis, and in particular relates to the field of automobile heat insulation performance analysis. The method solves the problem of lacking a test method for collecting the related data of the heat insulation performance of the driving cabin by performing a test on the whole vehicle. The acquisition method comprises the following steps: adjusting the test vehicle and equipment thereof to meet the technical condition requirements; carrying out the same-temperature treatment of the test vehicle; adjusting and setting a high-temperature environment cabin of the test vehicle; performing a test vehicle driving cabin heat insulation performance test, and performing pretreatment and then performing a high-temperature environment cabin test; and (5) collecting related data of the heat insulation performance of the driving cabin of the test vehicle, and drawing a temperature-time change curve of each temperature measuring point. The acquisition method can be applied to the fields of automobile performance analysis, automobile heat insulation performance analysis, driving cabin heat insulation performance test and automobile heat insulation component development and manufacturing.

Description

Method for acquiring related data of heat insulation performance of driving cabin
Technical Field
The invention belongs to the field of automobile performance analysis, and particularly relates to the field of automobile heat insulation performance analysis.
Background
Along with the progress of automobile technology and the continuous improvement of the material culture demands of people, the requirements of people on the comfort in the automobile are correspondingly improved. In some high-temperature wet heat strong illumination environments, an automobile with good heat insulation performance materials is used, so that the difficulty in transferring external heat loads such as strong light, high-temperature gas and the like into a cab can be increased, and the comfort of passengers in the automobile can be improved, and meanwhile, the energy consumption of an air conditioning system in the automobile can be effectively reduced. The quality of the heat insulation performance of the cockpit generally directly influences the speed of entering the cockpit from the high temperature outside the automobile through heat exchange. The automobile with good heat insulation performance has the advantages that when the air conditioner is started in summer for refrigeration, the energy consumption occupied by the air conditioning system during operation is smaller, the comfort of the members in the automobile is ensured, and meanwhile, the oil consumption of the whole automobile during the air conditioner is reduced. The method is corresponding to new energy vehicles such as pure electric vehicles, hybrid electric vehicles and the like, and can bring higher driving range for the vehicles. Therefore, the heat insulation performance is particularly important for the automobile cockpit, and has positive effects of improving the comfort of passengers in the automobile, improving the oil consumption of the whole fuel oil automobile and prolonging the driving range of the new energy automobile.
An automobile is a complex system of electromechanical hybrid composed of a large number of components. The test device is different from the part test, and through the whole vehicle test, a host factory can know which aspects of the vehicle have defects after all parts are assembled. And further judging whether the overall performance of the vehicle can reach the expected design target, and checking the specific effect of the parts in the whole vehicle state, so that the direction of optimizing the performance of the vehicle can be controlled and improved, and the quality of products is ensured.
In the whole automobile performance test, the test of the heat insulation performance of the cockpit is very important. The heat insulating performance of an automobile cab refers to the ability of the driver and passengers of the automobile to insulate the outside environment from the temperature effects of the environment while riding in the automobile every day. Obtaining key data is critical to the insulation performance testing of the vehicle cabin because the data can reflect the insulation capacity of the cabin for improvement and optimization by the vehicle manufacturer.
When the heat insulation performance test is carried out, key data to be measured comprise the temperature change condition in the vehicle under the influence of factors such as the temperature inside and outside the vehicle, the wind speed, the relative humidity, the solar radiation illuminance and the like. Through laboratory simulation test and real scene test on the key data, the adaptability of the vehicle driving cabin to external different temperature environments can be judged, and data support is provided to optimize the design and configuration of the vehicle heat insulation performance.
In addition, the effective heat insulation performance test needs to accurately measure and monitor the data inside and outside the driving cabin, so that the accuracy and reliability of the test data are ensured, and the scientificity and operability of the test result are ensured. Therefore, the acquisition of the cabin heat insulation performance related data is not negligible for the importance of the automobile cabin heat insulation performance test.
At present, although related design patents related to improvement of the heat insulation performance of an automobile cab and design schemes and test methods of the heat insulation performance of part of components exist, a test method for acquiring related data of the heat insulation performance of a driving cabin by performing a test on the whole automobile is lacking.
Disclosure of Invention
In order to solve the problem of lacking a test method for collecting the related data of the heat insulation performance of the driving cabin by performing a test on the whole vehicle, the invention provides a method for collecting the related data of the heat insulation performance of the driving cabin, which comprises the following steps:
s101, checking and servicing test vehicles, and adjusting the test vehicles and equipment thereof to meet technical condition requirements;
s102, performing test vehicle isothermal treatment;
s103, adjusting and setting a high-temperature environmental chamber of the test vehicle;
s104, performing a test vehicle driving cabin heat insulation performance test, and performing a pretreatment and then a high-temperature environment cabin test;
s105, collecting related data of the heat insulation performance of the driving cabin of the test vehicle, and drawing a temperature-time change curve of each temperature measuring point.
Further, the technical requirements include:
the parts of the air conditioning system of the test vehicle are complete, no leakage exists, the work is effective, and the filling amount of the refrigerant is qualified;
the air supply pipeline of the test vehicle is airtight, the air outlet valve is flexible to operate, and the air outlet grille of the blowing surface faces to the upper side of the shoulder of a driver;
the test vehicle finishes automatic air conditioner calibration and the air tightness is qualified;
the gear calibration strategy of the engine and the gearbox of the test vehicle reaches a final development state;
the test vehicle shade apparatus was acceptable.
Further, the method is characterized in that the test vehicle is subjected to the same temperature treatment by adopting the following steps:
s301, placing a test vehicle in a constant-temperature vehicle soaking area, and opening an engine compartment cover, a vehicle door and a trunk door to the maximum opening;
s302, after the temperature in the constant-temperature vehicle soaking area reaches (25+/-2) DEG C, starting to perform the whole vehicle constant-temperature treatment of the test vehicle;
s303, the whole test vehicle is subjected to the same-temperature treatment for more than or equal to 12 hours.
Further, when the test vehicle is subjected to the same-temperature treatment, if the test vehicle is provided with the auxiliary heat insulation device, the auxiliary heat insulation device is ensured to be in a normal working state.
Further, the adjustment and the setting of the high-temperature environmental chamber of the test vehicle are specifically performed as follows: the temperature of the high-temperature environmental chamber of the test vehicle is set to 38 ℃, the relative humidity is 50 percent Rh, and the illumination is 1000W/m 2 。
Further, the pretreatment is carried out by the following steps:
s601, closing a door and a window of a test vehicle;
s602, starting an engine of the test vehicle, and adjusting the gear to be P gear or neutral gear;
s603, setting an air conditioner as an automatic gear and setting the temperature as the recommended set temperature of the automobile;
s604, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz;
s605, when the temperature acquisition device acquires that the average temperature of the head position of the personnel in the cockpit reaches 20+/-1 ℃, the pretreatment is finished.
Further, the high-temperature environmental chamber test is performed by the following steps:
s701, pushing a test vehicle into a test area of a high-temperature environmental chamber, and starting a test;
s702, keeping the doors and windows of the test vehicle closed;
s703, turning off the test vehicle engine;
s704, turning off the test vehicle air conditioner.
Further, the test vehicle cab heat insulation performance related data acquisition comprises the following steps:
s801, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz, and the acquisition time is 180min;
s802, the temperature measuring points are the head position of the driver, the head position of the copilot and the head position of the passenger;
s803, recording the temperature of each acquired temperature measuring point into a table, wherein the interval between every two recordings is 10min;
s804, drawing a temperature-time change curve of each temperature measuring point according to the table.
The acquisition method has the beneficial effects that:
(1) The method for collecting the related data of the heat insulation performance of the driving cabin is provided, experiments are carried out on the whole vehicle, the collected data is more realistic, in the method for collecting the related variables of the vehicle and the environment can be adjusted in real time according to specific needs, the driving in a real road environment is not needed, and the resources and time consumed by data collection can be saved.
(2) The related data acquisition is realized by a sensor and other devices, and the devices can monitor and record key data of temperature change in the cockpit along with time in real time. By analyzing the collected data, the real situation of the heat insulation performance of the automobile can be reflected more directly, the automobile manufacturer is helped to better optimize the design and the material selection in the automobile, and the heat insulation performance of the automobile is improved. Thereby promote car user experience and feel, promote the quality of car.
The acquisition method can be applied to the fields of automobile performance analysis, automobile heat insulation performance analysis, driving cabin heat insulation performance test and automobile heat insulation component development and manufacturing.
Drawings
FIG. 1 is a flow chart of the test method according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to fall within the scope of the invention.
Example 1.
The embodiment provides a method for collecting related data of heat insulation performance of a driving cabin, as shown in fig. 1, the method comprises the following steps:
s101, checking and servicing test vehicles, and adjusting the test vehicles and equipment thereof to meet technical condition requirements;
s102, performing test vehicle isothermal treatment;
s103, adjusting and setting a high-temperature environmental chamber of the test vehicle;
s104, performing a test vehicle driving cabin heat insulation performance test, and performing a pretreatment and then a high-temperature environment cabin test;
s105, collecting related data of the heat insulation performance of the driving cabin of the test vehicle, and drawing a temperature-time change curve of each temperature measuring point.
Example 2.
The embodiment is further defined in embodiment 1, wherein the step of checking and servicing the test vehicle, and the step of adjusting the whole vehicle and the equipment thereof to meet the technical condition requirements is specifically as follows:
the test vehicle should meet the following technical requirements in addition to GB/T12534:
a) The air conditioning system components are confirmed to be complete, no leakage exists, and the work is effective;
b) Confirming that the filling quantity of the refrigerant in the air conditioning system meets the technical condition requirement of the vehicle;
c) Confirming that each interface of the air supply pipeline is airtight, and each air outlet valve is flexible to operate;
d) Confirming that the temperature control switch, the air quantity control switch, the air direction selection switch and the internal and external circulation control switch are normal in operation;
e) The direction of the air outlet grille of the blowing face is adjusted to be slightly upward and faces to the upper part of the shoulder of a driver;
f) The whole vehicle finishes automatic air conditioner calibration;
g) The air tightness of the whole vehicle meets the technical condition requirement of the whole vehicle;
h) Confirming that the gear calibration strategy of the engine and the gearbox should reach a final development state;
i) The fan state and control logic of the radiator meet the design requirements;
j) Ensuring that the vehicle shading equipment (door and window heat insulation films, sun shades and the like) meets the design requirements;
k) If no special requirements exist, the test vehicle should be painted in a dark color (such as black).
Example 3.
This example is a further limitation of example 1, and the test vehicle isothermal treatment is performed by the following steps:
s301, placing a test vehicle in a constant-temperature vehicle soaking area, and opening an engine compartment cover, a vehicle door and a trunk door to the maximum opening;
s302, after the temperature in the constant-temperature vehicle soaking area reaches (25+/-2) DEG C, starting to perform the whole vehicle constant-temperature treatment of the test vehicle;
s303, the whole test vehicle is subjected to the same-temperature treatment for more than or equal to 12 hours.
Example 4.
This embodiment is a further limitation of embodiment 3, wherein if the vehicle is equipped with an auxiliary heat shield during the test vehicle temperature control, the auxiliary heat shield is ensured to be in a normal operation state.
Example 5.
This example is a further limitation of example 1, and the adjustment and setting of the high-temperature environmental chamber of the test vehicle are specifically performed by: the temperature of the high-temperature environmental chamber of the test vehicle is set to 38 ℃, the relative humidity is 50 percent Rh, and the illumination is 1000W/m 2 。
Example 6.
This example is a further definition of example 1, the pretreatment being carried out by the following steps:
s601, closing a door and a window of a test vehicle;
s602, starting an engine of the test vehicle, and adjusting the gear to be P gear or neutral gear;
s603, setting an air conditioner as an automatic gear and setting the temperature as the recommended set temperature of the automobile;
s604, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz;
s605, when the temperature acquisition device acquires that the average temperature of the head position of the personnel in the cockpit reaches 20+/-1 ℃, the pretreatment is finished.
The automatic gear is as follows: after the user sets the expected temperature in the driving cabin, the influence caused by the change of the temperature outside the automobile, the illumination intensity, the speed of the automobile and the like can be automatically corrected by automatically adjusting the air outlet temperature, the air outlet quantity, the air outlet mode, the air inlet mode and the like, so that the temperature in the driving cabin of the automobile can be automatically adjusted, and the comfort requirement of the driving personnel can be met.
And after the recommended set temperature is the default comfortable temperature set by a user after the automatic air conditioner finishes system calibration.
Example 7.
7. This example is a further limitation of example 1, and the high temperature environmental chamber test is performed by the following steps:
s701, pushing the test vehicle into a test area of the high-temperature environmental chamber, and starting a test;
s702, keeping the doors and windows of the test vehicle closed;
s703, turning off the test vehicle engine;
s704, turning off the test vehicle air conditioner.
Example 8.
This example is a further definition of example 1, and the test data acquisition and processing is performed using the following steps:
s801, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz, and the acquisition time is 180min;
s802, the temperature measuring points are the head position of the driver, the head position of the copilot and the head position of the passenger;
s803, recording the temperature of each acquired temperature measuring point into a table, wherein the interval between every two recordings is 10min;
s804, drawing a temperature-time change curve of each temperature measuring point according to the table.
Wherein, the temperature measuring points can be increased according to specific needs, and the table is shown in table 1:
table 1:
Figure BDA0004180405780000081
Figure BDA0004180405780000091

Claims (8)

1. the method for collecting the related data of the heat insulation performance of the driving cabin is characterized by comprising the following steps of:
s101, checking and servicing test vehicles, and adjusting the test vehicles and equipment thereof to meet technical condition requirements;
s102, performing test vehicle isothermal treatment;
s103, adjusting and setting a high-temperature environmental chamber of the test vehicle;
s104, performing a test vehicle driving cabin heat insulation performance test, and performing a pretreatment and then a high-temperature environment cabin test;
s105, collecting related data of the heat insulation performance of the driving cabin of the test vehicle, and drawing a temperature-time change curve of each temperature measuring point.
2. The method for collecting cabin insulation performance related data according to claim 1, wherein the technical condition requirements include:
the parts of the air conditioning system of the test vehicle are complete, no leakage exists, the work is effective, and the filling amount of the refrigerant is qualified;
the air supply pipeline of the test vehicle is airtight, the air outlet valve is flexible to operate, and the air outlet grille of the blowing surface faces to the upper side of the shoulder of a driver;
the test vehicle finishes automatic air conditioner calibration and the air tightness is qualified;
the gear calibration strategy of the engine and the gearbox of the test vehicle reaches a final development state;
the test vehicle shade apparatus was acceptable.
3. The method for collecting the related data of the heat insulation performance of the driving cabin according to claim 1, wherein the test vehicle is subjected to the same temperature treatment by the following steps:
s301, placing a test vehicle in a constant-temperature vehicle soaking area, and opening an engine compartment cover, a vehicle door and a trunk door to the maximum opening;
s302, after the temperature in the constant-temperature vehicle soaking area reaches (25+/-2) DEG C, starting to perform the whole vehicle constant-temperature treatment of the test vehicle;
s303, the whole test vehicle is subjected to the same-temperature treatment for more than or equal to 12 hours.
4. A method of collecting cabin insulation performance related data according to claim 3, wherein if the test vehicle is equipped with an auxiliary insulation device during the test vehicle's co-temperature processing, the auxiliary insulation device is ensured to be in a normal operation state.
5. The method for collecting the related data of the heat insulation performance of the driving cabin according to claim 1, wherein the adjusting and setting of the high-temperature environmental cabin of the test vehicle is specifically performed by: the temperature of the high-temperature environmental chamber of the test vehicle is set to 38 ℃, the relative humidity is 50 percent Rh, and the illumination is 1000W/m 2 。
6. The method for collecting the cabin heat insulation performance related data according to claim 1, wherein the preprocessing is performed by the following steps:
s601, closing a door and a window of a test vehicle;
s602, starting an engine of the test vehicle, and adjusting the gear to be P gear or neutral gear;
s603, setting an air conditioner as an automatic gear and setting the temperature as the recommended set temperature of the automobile;
s604, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz;
s605, when the temperature acquisition device acquires that the average temperature of the head position of the personnel in the cockpit reaches 20+/-1 ℃, the pretreatment is finished.
7. The method for collecting the related data of the heat insulation performance of the driving cabin according to claim 1, wherein the high-temperature environmental cabin test is performed by the following steps:
s701, pushing a test vehicle into a test area of a high-temperature environmental chamber, and starting a test;
s702, keeping the doors and windows of the test vehicle closed;
s703, turning off the test vehicle engine;
s704, turning off the test vehicle air conditioner.
8. The method for acquiring the cabin insulation performance related data according to claim 1, wherein the test vehicle cabin insulation performance related data acquisition comprises the steps of:
s801, starting a temperature acquisition device, wherein the acquisition frequency is 1Hz, and the acquisition time is 180min;
s802, the temperature measuring points are the head position of the driver, the head position of the copilot and the head position of the passenger;
s803, recording the temperature of each acquired temperature measuring point into a table, wherein the interval between every two recordings is 10min;
s804, drawing a temperature-time change curve of each temperature measuring point according to the table.
CN202310403142.1A 2023-04-14 2023-04-14 Method for acquiring related data of heat insulation performance of driving cabin Pending CN116337480A (en)

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