Rain test method for water inflow of external circulation port of vehicle air conditioner

Abstract

The invention, which relates to the technical field of vehicle testing, discloses a rain test method for water inflow of an external circulation port of a vehicle air conditioner, and the method comprises the steps: judging whether a tested vehicle meets a preset test requirement or not; if yes, the first weight of the air conditioner filter element of the test vehicle is obtained, and the test vehicle is driven into the rain room; controlling the test vehicle to enter an idling working condition; the rain room is controlled to start raining, a windscreen wiper and an air conditioner blower of the tested vehicle are controlled to be started, and the air conditioner blower is controlled to switch high and low gears; obtaining the second weight of the air conditioner filter element; according to the difference value of the first weight and the second weight, whether water enters the air conditioner filter element or not and whether the water inflow amount is larger than a preset water inflow threshold value or not are judged; and if yes, judging that the water inflow condition exists in the vehicle air conditioner external circulation port. The simple and scientific rain test method provided by the invention is used for rapidly detecting whether water enters the external circulation port area of the vehicle air conditioner so as to evaluate whether the rainwater management design of the front wall cabin is reasonable.

Description

Technical Field

[0001] The invention relates to the technical field of vehicle testing, and in particular to a rain test method for water inlet into an external circulation port of a vehicle air conditioner. Background Art

[0002] As a number of national standards have been introduced to further strengthen vehicle waterproofing and other related requirements to improve vehicle safety, vehicle water management performance has become increasingly important as one of the most perceptible performances for users, and is one of the key performance indicators in vehicle development. When users encounter actual water management scenarios such as heavy rain and car washing, they are mainly concerned about issues such as A-pillar overflow, water gutter overflow, water inlet to air conditioners, rain leakage from doors and windows, and water accumulation.

[0003] If the design of the front sheet metal and the air-conditioning external circulation port is unreasonable during the vehicle development process, the overflow water from the A-pillar and the ventilation cover will be drained into the air-conditioning external circulation port through the sheet metal. On this basis, if the user happens to set the air-conditioning for external circulation during heavy rain or car washing, the speed and amount of water inflow into the vehicle will be increased, causing rainwater to enter the car or drip onto electrical components, resulting in poor customer experience and even safety risks. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a rain test method for water inlet into the external circulation port of a vehicle air conditioner, aiming to provide a simple and scientific rain test method for effectively detecting whether rainwater will enter from the fresh air port of the air conditioner, so as to determine whether the rainwater management design of the front cabin of the whole vehicle is reasonable, and finally to evaluate whether the relevant performance indicators of the whole vehicle are achieved, and support design changes, etc.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions:

[0006] A rain test method for water inflow into an external circulation port of a vehicle air conditioner, the method comprising:

[0007] Obtaining the vehicle status of the test vehicle, identifying the vehicle status, and determining whether the test vehicle meets the preset test requirements;

[0008] If the test vehicle meets the preset test requirements, a first weight of the air conditioning filter element of the test vehicle is obtained, and the test vehicle is driven into a shower room;

[0009] Controlling the test vehicle to enter an idling condition, and respectively performing initial settings of the rain test on the rain room and the test vehicle;

[0010] Controlling the rain shower room to start raining, controlling the wipers and air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears;

[0011] Using a hygrometer to detect the humidity in the test vehicle, and obtaining a second weight of the air conditioning filter element;

[0012] According to the difference between the first weight and the second weight, determining whether water has entered the air conditioning filter element, and whether the amount of water entering the air conditioning filter element is greater than a preset water inlet threshold;

[0013] If the water inflow of the air conditioning filter element is greater than the water inflow threshold, it is determined that water is inflowing into the vehicle air conditioning external circulation port.

[0014] According to one aspect of the above technical solution, the steps of controlling the test vehicle to enter an idling condition and performing initial settings of the rain test on the rain room and the test vehicle respectively include:

[0015] In the shower room, the test vehicle is placed in an idling condition in a target shower area of ​​the shower room;

[0016] The duration, range and intensity of the shower room are set, and the wiper position and air-conditioning blower position of the test vehicle are set.

[0017] According to one aspect of the above technical solution, the duration of the rain is 15-25 minutes, the wiper gear is the highest gear of the automatic gear, and the air-conditioning blower gear is the highest gear.

[0018] According to one aspect of the above technical solution, the steps of controlling the shower room to start showering, controlling the wipers and air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears include:

[0019] Controlling the shower room to shower the test vehicle according to the initially set shower duration, shower range and shower intensity;

[0020] According to the initially set wiper gear and air conditioner blower gear, the wiper and air conditioner blower of the test vehicle are controlled to work respectively;

[0021] The air conditioning blower is switched between high and low gears.

[0022] According to one aspect of the above technical solution, the step of switching the air conditioner blower to a high or low gear specifically includes:

[0023] When the air-conditioning blower is in the first gear, controlling the air-conditioning blower to switch to the second gear after a first preset time;

[0024] When the air-conditioning blower is in the second gear, controlling the air-conditioning blower to switch to the first gear after a second preset time;

[0025] Among them, the gear position of the first gear is higher than the gear position of the second gear.

[0026] According to one aspect of the above technical solution, the high and low gear switching of the air-conditioning blower includes at least two cycle switchings.

[0027] According to one aspect of the above technical solution, the first preset time and the second preset time are both 3-8 minutes.

[0028] According to one aspect of the above technical solution, the water inlet threshold of the air conditioning filter is determined according to the rain duration.

[0029] According to one aspect of the above technical solution, when the initial setting of the water spraying time is 20 minutes, the air conditioning blower runs for 5 minutes at each gear, and the high and low gears are cycled for 2 cycles, the water inlet threshold of the air conditioning filter is set to 5g.

[0030] According to one aspect of the above technical solution, the first weight and the second weight of the air conditioning filter element are both obtained by weighing.

[0031] Compared with the prior art, the rain test method for water inlet into the external circulation port of the vehicle air conditioner shown in the present invention has the following beneficial effects:

[0032] By adopting the method shown in this embodiment, when conducting a rain test on a test vehicle, it is determined whether the rain test is allowed by obtaining the vehicle status of the test vehicle, and then the first weight and the second weight of the air-conditioning filter element before and after the rain test of the test vehicle are obtained respectively, and based on the weight difference between the two, it is determined whether there is water ingress in the area at the air-conditioning external circulation port of the test vehicle. This embodiment can effectively detect whether rainwater will enter from the air-conditioning fresh air port by providing a simple and scientific test method, so as to determine whether the rainwater management design of the front engine compartment of the whole vehicle is reasonable, and finally it can be evaluated whether the relevant performance indicators of the whole vehicle are achieved, and support design changes, etc. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0034] Figure 1 The present invention is a schematic flow chart of a method for rain test of water inlet into the external circulation port of a vehicle air conditioner according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the purpose, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings. Several embodiments of the present invention are shown in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present invention more thorough and comprehensive.

[0036] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used herein in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more related listed items.

[0037] Embodiment 1

[0038] See also Figure 1 The first embodiment of the present invention provides a method for rain test of water inflow into the external circulation port of a vehicle air conditioner, the method comprising steps S10 to S70:

[0039] Step S10, obtaining the vehicle status of the test vehicle, identifying the vehicle status, and determining whether the test vehicle meets the preset test requirements.

[0040] In this embodiment, the test vehicle is a vehicle to be subjected to a water spray test, which may be a fuel vehicle or a new energy vehicle. Then, before conducting the formal rain spray test, the vehicle status of the test vehicle will be obtained and identified, based on which it is determined whether the test vehicle meets the preset test requirements.

[0041] Specifically, the vehicle status of the test vehicle is obtained by using a test terminal to access the OBD port to obtain data to obtain the vehicle status of the test vehicle, and then based on the vehicle status, it is determined whether the electronic devices of the test vehicle related to the rainy scene can operate normally, such as wipers, air-conditioning equipment, etc., where the air-conditioning equipment mainly includes air-conditioning blowers.

[0042] If it is determined that the test vehicle meets the preset test requirements, the method shown in this embodiment enters step S20.

[0043] Step S20, obtaining a first weight of the air conditioning filter element of the test vehicle, and driving the test vehicle into a shower room.

[0044] In this embodiment, after determining that the test vehicle meets the test requirements, the first weight of the air-conditioning filter in the test vehicle will be obtained first, usually by using precision weighing equipment to weigh it, so as to obtain the first weight of the air-conditioning filter, that is, the initial weight of the air-conditioning filter before the rain test. The air-conditioning filter is usually located inside the co-pilot's armrest box and can be disassembled for weighing.

[0045] Among them, after the air conditioning filter is weighed to obtain the first weight, the tester will drive the test vehicle into the rain room to prepare for the rain test.

[0046] It should also be noted that after the tester drives the test vehicle into the rain shower room, the test vehicle must not be turned off and the tester must not get off the vehicle. This is to prevent the test vehicle from inhaling a large amount of high-humidity air in the rain shower room when it is started again, which will affect the accurate judgment of whether the vehicle should enter later.

[0047] Step S30, controlling the test vehicle to enter an idle state, and performing initial settings of a rain test on the rain room and the test vehicle respectively.

[0048] In this embodiment, the steps of controlling the test vehicle to enter an idling condition and performing initial settings of the rain test on the rain room and the test vehicle respectively include:

[0049] In the shower room, the test vehicle is placed in an idling condition in a target shower area of ​​the shower room;

[0050] The duration, range and intensity of the shower room are set, and the wiper position and air-conditioning blower position of the test vehicle are set.

[0051] In this embodiment, after the test vehicle is driven into the shower room, the test vehicle is parked in the target water spraying area in the shower room, and then parked, the test vehicle enters the idle condition, and the initial settings of the field test are performed on the shower room and the test vehicle, including, for example, setting the shower parameters of the shower room and setting the working mode of the test vehicle.

[0052] Specifically, the shower parameters of the shower room are set, including the shower duration, shower intensity and shower range. The shower duration is equivalent to the test time, the shower intensity is used to simulate the precipitation intensity, and the shower range can be selected separately to conduct a shower test on a certain area of ​​the test vehicle, or to conduct a shower test on the entire vehicle.

[0053] Among them, the working mode of the test vehicle is initially set, including the setting of the wiper gear and the air-conditioning blower gear. When conducting rain tests, the wiper gear and the air-conditioning blower gear are usually set to the maximum gear to better suit the actual vehicle usage scenario.

[0054] Specifically, the duration of the rain is 15-25 minutes, the wiper gear is the highest gear of the automatic gear, and the air conditioner blower gear is the highest gear.

[0055] Step S40, controlling the shower room to start showering, controlling the wipers and the air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears.

[0056] In this embodiment, the steps of controlling the shower room to start showering, controlling the wipers and the air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears include:

[0057] Controlling the shower room to shower the test vehicle according to the initially set shower duration, shower range and shower intensity;

[0058] According to the initially set wiper gear and air conditioner blower gear, the wiper and air conditioner blower of the test vehicle are controlled to work respectively;

[0059] The air conditioning blower is switched between high and low gears.

[0060] The step of switching the air conditioner blower to high or low gears specifically includes:

[0061] When the air-conditioning blower is in the first gear, controlling the air-conditioning blower to switch to the second gear after a first preset time;

[0062] When the air-conditioning blower is in the second gear, controlling the air-conditioning blower to switch to the first gear after a second preset time;

[0063] The first gear is higher than the second gear. The air conditioner blower switches between high and low gears for at least two cycles. The first preset time and the second preset time are both 3-8 minutes.

[0064] In this embodiment, after all the preparations are completed, the shower room will be controlled to shower the test vehicle. The shower room is usually controlled to start showering based on a control instruction issued by a tester.

[0065] When the rain starts, the wipers and air-conditioning blower of the test vehicle are controlled to turn on, specifically, they work according to the initially set wiper gear and air-conditioning blower gear. Then during the rain test, the air-conditioning blower gear is not fixed, but changes dynamically. Specifically, the air-conditioning blower is controlled to switch between high and low gears, and the gear switching can be multiple cycles.

[0066] For example, if the highest gear of the air-conditioning blower is 5 and the lowest gear is 1, then during the rain test, the adjustment process of the air-conditioning blower gear can be 5-1-5-1, or 5-1-5-1-5-1-1 and so on.

[0067] Step S50, using a hygrometer to detect the humidity in the test vehicle, and obtaining the second weight of the air conditioning filter element.

[0068] In this embodiment, during the rain test, the humidity inside the test vehicle will be detected by hygrometers preset in various key locations in the vehicle, including the vehicle roof, carpet, air-conditioning vents and other locations that are prone to water ingress or seepage.

[0069] And after the rain test, for example, the water test is set to 20 minutes, the air conditioning filter element is weighed again after 20 minutes to obtain a second weight.

[0070] The second weight includes the initial weight of the air conditioning filter element and the weight of water that may have entered the air conditioning filter element.

[0071] Step S60: judging whether water has entered the air conditioning filter element and whether the amount of water entering the air conditioning filter element is greater than a preset water entry threshold value according to the difference between the first weight and the second weight.

[0072] In this embodiment, before and after the test vehicle is subjected to the rain test, the first weight and the second weight of the air conditioning filter element are respectively obtained, so as to determine whether water has entered the area at the air conditioning external circulation port in the test vehicle based on the comparison between the two.

[0073] The setting of the water inlet threshold is dynamically determined according to the test standard, specifically according to the strictness of the test. For example, when the test standard is higher, the setting of the water inlet threshold can be higher, otherwise it can be lower.

[0074] Step S70: If the water inflow into the air conditioning filter element is greater than the water inflow threshold, it is determined that water is inflowing into the vehicle air conditioning external circulation port.

[0075] In this embodiment, after the actual water inflow of the air-conditioning filter is calculated based on the first weight and the second weight of the air-conditioning filter, it will be determined whether the water inflow is greater than a predetermined water inflow threshold. If so, it means that water has entered the area at the vehicle's air-conditioning external circulation port, affecting the user's normal use of the vehicle. Otherwise, it is determined that it does not affect the user's normal use of the vehicle.

[0076] Among them, in this embodiment, when the water spraying time is 20 minutes and the wiper gear and the air-conditioning blower gear are in the highest gear, the corresponding set water inlet threshold is 5g. For example, the first weight of the air-conditioning filter is 200g. If the second weight is 220g, it means that the water inflow into the air-conditioning filter reaches 20g, which can reflect the existence of water inflow in the test vehicle.

[0077] Compared with the prior art, the rain test method for water inlet into the external circulation port of the vehicle air conditioner shown in the present invention has the following beneficial effects:

[0078] By adopting the method shown in this embodiment, when conducting a rain test on a test vehicle, it is determined whether the rain test is allowed by obtaining the vehicle status of the test vehicle, and then the first weight and the second weight of the air-conditioning filter element before and after the rain test of the test vehicle are obtained respectively, and based on the weight difference between the two, it is determined whether there is water ingress in the area at the air-conditioning external circulation port of the test vehicle. This embodiment can effectively detect whether rainwater will enter from the air-conditioning fresh air port by providing a simple and scientific test method, so as to determine whether the rainwater management design of the front engine compartment of the whole vehicle is reasonable, and finally it can be evaluated whether the relevant performance indicators of the whole vehicle are achieved, and support design changes, etc.

[0079] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0080] The above-mentioned embodiments only express several implementation methods of the present invention, and the descriptions thereof are relatively specific and detailed, but they cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for those of ordinary skill in the art, several variations and improvements can be made without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A rain test method for water inlet into the external circulation port of a vehicle air conditioner, characterized in that: The method comprises: Obtaining the vehicle status of the test vehicle, identifying the vehicle status, and determining whether the test vehicle meets the preset test requirements; If the test vehicle meets the preset test requirements, a first weight of the air conditioning filter element of the test vehicle is obtained, and the test vehicle is driven into a shower room; Controlling the test vehicle to enter an idling condition, and respectively performing initial settings of the rain test on the rain room and the test vehicle; Controlling the rain shower room to start raining, controlling the wipers and air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears; Using a hygrometer to detect the humidity in the test vehicle, and obtaining a second weight of the air conditioning filter element; According to the difference between the first weight and the second weight, determining whether water has entered the air conditioning filter element, and whether the amount of water entering the air conditioning filter element is greater than a preset water inlet threshold; If the water inflow of the air conditioning filter element is greater than the water inflow threshold, it is determined that water is inflowing into the vehicle air conditioning external circulation port.

2. The rain test method for water inlet into the external circulation port of a vehicle air conditioner according to claim 1, characterized in that: The steps of controlling the test vehicle to enter an idling condition and performing initial settings of the rain test on the rain room and the test vehicle respectively include: In the shower room, the test vehicle is placed in an idling condition in a target shower area of ​​the shower room; The duration, range and intensity of the shower room are set, and the wiper position and air-conditioning blower position of the test vehicle are set.

3. The rain test method for water inlet into the vehicle air conditioning external circulation port according to claim 2, characterized in that: The rain duration is 15-25 minutes, the wiper gear is the highest gear of the automatic gear, and the air-conditioning blower gear is the highest gear.

4. The rain test method for water inflow into the external circulation port of a vehicle air conditioner according to claim 3, characterized in that: The steps of controlling the shower room to start showering, controlling the wipers and air-conditioning blower of the test vehicle to turn on, and controlling the air-conditioning blower to switch between high and low gears include: Controlling the shower room to shower the test vehicle according to the initially set shower duration, shower range and shower intensity; According to the initially set wiper gear and air conditioner blower gear, the wiper and air conditioner blower of the test vehicle are controlled to work respectively; The air conditioning blower is switched between high and low gears.

5. The method for rain test of water inlet into the external circulation port of vehicle air conditioner according to claim 4, characterized in that: The step of switching the air conditioner blower to a high or low gear specifically includes: When the air-conditioning blower is in the first gear, controlling the air-conditioning blower to switch to the second gear after a first preset time; When the air-conditioning blower is in the second gear, controlling the air-conditioning blower to switch to the first gear after a second preset time; Among them, the gear position of the first gear is higher than the gear position of the second gear.

6. The method for rain test of water inlet into the external circulation port of vehicle air conditioner according to claim 4, characterized in that: The high and low gear switching of the air conditioning blower includes at least two cycle switchings.

7. The method for rain test of water inlet into the external circulation port of vehicle air conditioner according to claim 5, characterized in that: The first preset time and the second preset time are both 3-8 minutes.

8. The method for rain test of water inlet into the external circulation port of vehicle air conditioner according to claims 1-7, characterized in that: The water inlet threshold of the air conditioning filter is determined according to the rain duration.

9. The method for rain test of water inflow into the external circulation port of vehicle air conditioner according to claim 8, characterized in that: When the water spraying time is initially set to 20 minutes, the air-conditioning blower runs for 5 minutes at each gear, and the high and low gears are cycled for 2 cycles, the water inlet threshold of the air-conditioning filter is set to 5g.

10. The method for rain test of water inflow into the external circulation port of vehicle air conditioner according to claim 1, characterized in that: The first weight and the second weight of the air conditioning filter element are both obtained by weighing.

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