Engine performance verification simulation device and method

Abstract

The present application relates to an engine performance verification simulation device and method, and to the field of vehicle test technology. Two spaced partition plates are provided in the simulation box of the device, one end of the partition plate is connected to the top of the simulation box, and the other end is detachably connected to the bottom of the simulation box, so as to divide the simulation box into a high temperature chamber, a buffer chamber and a low temperature chamber in sequence. The fixing unit is used to fix the engine compartment parts, and is also used to slide relative to the simulation box when all the partition plates are separated from the bottom of the simulation box, and drive the corresponding partition plates to rotate when they contact with the corresponding partition plates during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber and the low temperature chamber within a preset time. The device provided by the present application can reduce the transfer time of the engine compartment parts in high temperature and low temperature environments, so that the simulation scene is as close as possible to the actual driving environment, so as to accurately judge the performance changes of the parts and improve the accuracy and reliability of the simulation.

Description

Technical Field

[0001] The present application relates to the field of vehicle testing technology, and in particular to an engine performance verification simulation device and method. Background Art

[0002] At present, due to the complex road conditions on which cars travel, engine compartment parts may be affected by factors such as engine heat, chassis stone impact, rain splashing, high and low temperature climate, etc., and the operating conditions are very harsh. Therefore, when verifying the performance of parts, it is usually necessary to use high temperature resistance, low temperature resistance, stone impact, and climate cycle methods to verify and judge various performances. However, in actual driving, the whole vehicle often faces the situation where the above conditions occur at the same time, such as high temperature + stone impact (summer), low temperature + stone impact (winter), etc., or encounter rainy days, which makes the actual use environment more complicated and requires a comprehensive judgment of the parts' use conditions. Single test verification is an ideal environment, and actual use is far worse than a single test environment.

[0003] In the related technology, when conducting engine compartment parts tests, in order to restore the actual road conditions as much as possible, all situations that may be encountered in actual road conditions, such as chassis stone impact, rain splashing, high and low temperature climates and other factors are integrated to simulate the environment that may be encountered in the actual environment, so as to ensure the accuracy and reliability of the test.

[0004] However, in the current tests, the rapid changes in real-life high and low temperature environments, such as the rapid start-up of the engine in winter and the sudden shutdown of the engine after long-term idling in summer, cannot be simulated. During the current tests, it takes at least 10 minutes to switch from one simulation scene to another, mainly due to the time spent on disassembly, transfer and installation. This causes the engine compartment parts to cool down or heat up slowly, and it is impossible to simulate the impact of rapid changes in temperature / environment on part stress, resulting in inaccurate judgments. Summary of the invention

[0005] The embodiments of the present application provide an engine performance verification simulation device and method to solve the problem in the related art that when conducting an engine performance verification simulation test, the degree of restoration of the simulation environment is low, resulting in low accuracy and poor reliability.

[0006] In a first aspect, an engine performance verification simulation device is provided, comprising:

[0007] A simulation box, wherein two spaced-apart partitions are provided inside the simulation box, one end of the partition is connected to the top of the simulation box, and the other end is detachably connected to the bottom of the simulation box, so as to sequentially separate the simulation box into a high temperature chamber, a buffer chamber and a low temperature chamber arranged side by side;

[0008] A fixing unit is slidably disposed in the simulation box; wherein,

[0009] The fixing unit is used to fix the engine compartment parts, and is also used to slide relative to the simulation box when all the partition plates are separated from the bottom of the simulation box, and to drive the corresponding partition plates to rotate when they come into contact with the corresponding partition plates during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber and the low temperature chamber within a preset time.

[0010] In some embodiments, a connecting pin is provided at one end of each of the partition plates close to the bottom of the simulation box, and the connecting pin is used to connect the corresponding end of the partition plate to the bottom of the simulation box.

[0011] In some embodiments, the fixing unit includes a fixing trolley, and the fixing trolley includes four rollers arranged at intervals;

[0012] A slide rail is provided at the bottom of the simulation box along its length direction, and slide grooves are provided on both sides of the slide rail. Relatively extending extension parts are provided on both sides of each slide groove. The slide groove is used to accommodate two rollers located on the same side, and the extension part is used to keep the corresponding rollers in the slide groove. Two fixed grooves are provided at intervals along its length direction at the top of the slide groove, and each of the fixed grooves matches with one of the corresponding connecting pins.

[0013] In some embodiments, each of the partition plates is provided with an escape groove for evading the slide rail at one end close to the bottom of the simulation box, and a connecting pin is provided above the escape groove;

[0014] The inner wall of the avoidance groove is provided with a circle of heat-insulating plates distributed along its contour, and the height of the heat-insulating plates on each side of the inner wall of the avoidance groove is not less than the distance between the corresponding side of the avoidance groove and the slide rail.

[0015] In some embodiments, each of the partition plates includes a connecting section and a rotating section, one end of the connecting section is fixedly connected to the top of the simulation box, and the other end is rotatably connected to one end of the rotating section, and the height of the rotating section is not less than the minimum height allowing the fixed unit to which the fixed engine compartment parts are fixed to pass.

[0016] In some embodiments, both ends of the simulation box are provided with opening and closing doors, and the top or side of the opening and closing doors is hinged to the simulation box;

[0017] A driving groove is provided on one side of the simulation box.

[0018] In some embodiments, a driving unit is further included, and the driving unit includes at least one driving rod passing through the driving groove, and the end of the driving rod extending into the simulation box is connected to the fixed unit, and the end extending out of the simulation box is connected to a driving member, and the driving member is arranged on the outer wall of the simulation box and is used to drive the fixed unit to slide relative to the simulation box through the driving rod.

[0019] In some embodiments, a working condition simulation unit is further included, and the working condition simulation unit includes:

[0020] A plurality of water spraying assemblies and stone spraying assemblies are arranged at intervals, wherein the water spraying assemblies are used to spray water toward the high temperature chamber, the buffer chamber and the low temperature chamber, and the stone spraying assemblies are used to spray stone pellets of a preset size toward the high temperature chamber and the low temperature chamber;

[0021] The temperature control device comprises a heating component arranged in the high temperature chamber and a cooling component arranged in the low temperature chamber.

[0022] In some embodiments, the fixing unit includes a vibration table disposed on the top, and the vibration table is used to fix the engine compartment parts.

[0023] In a second aspect, an engine performance verification simulation method is provided, which is implemented using the above-mentioned engine performance verification simulation device, and the steps include:

[0024] Fixing the engine compartment parts on a fixing unit, and placing the fixing unit in a high temperature chamber or a low temperature chamber to perform corresponding working condition tests;

[0025] After the corresponding working condition test is completed, the bottom of each partition plate is separated from the bottom of the simulation box, and the fixing unit is driven to slide relative to the simulation box to the low-temperature chamber or high-temperature chamber on the opposite side, so that the engine compartment parts can be transferred between the high-temperature chamber and the low-temperature chamber within a preset time, and then the next corresponding working condition test is carried out.

[0026] The beneficial effects of the technical solution provided by this application include:

[0027] An embodiment of the present application provides an engine performance verification simulation device, wherein one end of a partition plate in a simulation box is connected to the top of the simulation box, and the other end is detachably connected to the bottom of the simulation box, and a fixing unit is slidably disposed in the simulation box and is used to fix engine compartment parts. Since the partition plate divides the simulation box into a high temperature chamber, a buffer chamber and a low temperature chamber in sequence, and the fixing unit can slide relative to the simulation box when the partition plate is separated from the bottom of the simulation box, and drives the corresponding partition plate to rotate when it contacts the corresponding partition plate during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber and the low temperature chamber within a preset time, therefore, the present engine performance verification simulation device can minimize the transfer time of the engine compartment parts in high temperature and low temperature environments, and effectively avoid excessive temperature changes of the engine compartment parts during the transfer process, so that the simulation scene is as close as possible to the actual driving environment, thereby accurately judging the performance changes of the parts and improving the accuracy and reliability of the simulation. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0029] Figure 1 A schematic diagram of the front structure of the engine performance verification simulation device provided in an embodiment of the present application;

[0030] Figure 2 A schematic diagram of the back structure of the engine performance verification simulation device provided in an embodiment of the present application;

[0031] Figure 3 A flow chart of an engine performance verification simulation method provided in an embodiment of the present application.

[0032] In the figure: 1-simulation box, 10-partition plate, 100-connecting pin, 101-avoidance groove, 102-connecting section, 103-rotation section, 11-high temperature chamber, 12-buffer chamber, 13-low temperature chamber, 14-slide rail, 15-fixed groove, 16-slide groove, 17-opening and closing door, 18-driving groove, 2-fixed unit, 20-fixed trolley, 21-roller, 3-working condition simulation unit, 30-water spray assembly, 31-stone spray assembly. DETAILED DESCRIPTION

[0033] In order to make the purpose, technical solution and advantages of the embodiments of the present application clearer, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of this application.

[0034] An embodiment of the present application provides an engine performance verification simulation device, which can solve the problem in the related art that when conducting an engine performance verification simulation test, the simulation environment has a low degree of restoration, resulting in low accuracy and poor reliability.

[0035] See also Figure 1 As shown, the engine performance verification simulation device includes a simulation box 1 and a fixing unit 2, wherein two partition plates 10 are arranged at intervals in the simulation box 1, one end of the partition plate 10 is connected to the top of the simulation box 1, and the other end is detachably connected to the bottom of the simulation box 1, so as to divide the simulation box 1 into a high temperature chamber 11, a buffer chamber 12 and a low temperature chamber 13 arranged side by side in sequence; the fixing unit 2 is slidably arranged in the simulation box 1, and the fixing unit 2 is used to fix the engine compartment parts, and is also used to slide relative to the simulation box 1 when all the partition plates 10 are separated from the bottom of the simulation box 1, and drive the corresponding partition plates 10 to rotate when contacting with the corresponding partition plates 10 during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber 11 and the low temperature chamber 13 within a preset time.

[0036] Specifically, in addition to being used to divide the simulation box 1 into a high temperature chamber 11, a buffer chamber 12, and a low temperature chamber 13, the partition plate 10 of the engine performance verification simulation device can rotate relative to the simulation box 1, so that the fixing unit 2 can slide relative to the simulation box 1 when the partition plate 10 is separated from the bottom of the simulation box 1, and drive the corresponding partition plate 10 to rotate when it contacts the corresponding partition plate 10 during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber 11 and the low temperature chamber 13 within a preset time. Therefore, the engine performance verification simulation device can minimize the transfer time of the engine compartment parts in high temperature and low temperature environments, and well avoid excessive temperature changes of the engine compartment parts during the transfer process, so that the simulation scene is as close as possible to the actual driving environment, so as to accurately judge the performance changes of the parts and improve the accuracy and reliability of the simulation.

[0037] Furthermore, since the simulated environment is mainly a switch between a high temperature environment and a low temperature environment, and the partition plate 10 itself mainly serves to isolate each chamber, when the transfer is not required, the partition plate 10 needs to have the best possible insulation function. Therefore, when the transfer is not required, the bottom of each partition plate 10 needs to be connected to the bottom of the simulation device to ensure that the temperature in the high temperature chamber 11 and the low temperature chamber 13 is not lost. And because the switch between the high temperature and low temperature environments is completed almost in an instant during the actual driving process, it is necessary to enable the engine compartment parts to be transferred and switched as quickly as possible in a very short time during the simulation process to ensure that the entire simulation process is close to the actual real environment. Therefore, each partition plate 10 is provided with a connecting pin 100 at one end close to the bottom of the simulation box 1, and the connecting pin 100 is used to connect the corresponding end of the partition plate 10 to the bottom of the simulation box 1.

[0038] Specifically, since the temperature difference between the high temperature chamber 11 and the low temperature chamber 13 is too large, in order to prevent the temperatures of the two from interfering with each other and affecting the actual temperature, a buffer chamber 12 is added between the high temperature chamber 11 and the low temperature chamber 13. In addition, since the environment in the high temperature chamber 11 and the low temperature chamber 13 is relatively extreme, if the components are set inside, the service life may be greatly reduced, which also affects the convenience of operation and even poses a safety hazard during operation. Therefore, the connecting pin 100 on each partition plate 10 is set on a side close to the buffer chamber 12. In addition, the connecting pin 100 can be electrically controlled or manually controlled. When manually controlled, the operator enters the buffer chamber 12 by hand and then turns the connecting pin 100 to achieve the connection and separation between the partition plate 10 and the bottom of the simulation box 1.

[0039] Furthermore, since the engine compartment parts need to be able to be transferred and switched in a very short time, the fixing unit 2 includes a fixing trolley 20, and the fixing trolley 20 includes four rollers 21 arranged at intervals, which can avoid rollover or jamming due to instability during the rapid transfer process, thereby affecting the simulation results. In addition, the bottom of the simulation box 1 is provided with a slide rail 14 arranged along its length direction, and both sides of the slide rail 14 are provided with slide grooves 16, and both sides of each slide groove 16 are provided with relatively extending extensions, and the slide groove 16 is used to accommodate two rollers 21 located on the same side, and the extension is used to keep the corresponding roller 21 in the slide groove 16, and the top of the slide groove 16 is provided with two fixing grooves 15 arranged at intervals along its length direction, and each fixing groove 15 is matched with one of the corresponding connecting pins 100.

[0040] Specifically, since the weight of the engine compartment parts is relatively heavy, and the fixed trolley 20 needs to carry the engine compartment parts and then hit the partition plate 10 at a faster speed to achieve transfer, the fixed trolley 20 is made of a relatively high hardness material, so the overall weight is very heavy. In order to ensure that the fixed trolley 20 can slide stably during the transfer and sliding process, compared to the conventional slide rail structure, the slide groove 16 of the slide rail 14 is arranged on both sides of the slide rail 14, and the roller 21 is accommodated in the slide groove 16 and is retained in the slide groove 16 by the extension portion, so that the roller 21 can slide horizontally along the slide groove 16, and is also limited in the left and right directions during the sliding process, thereby better ensuring the stability of the sliding process.

[0041] Furthermore, each partition plate 10 is provided with an avoidance groove 101 for avoiding the slide rail 14 at one end close to the bottom of the simulation box 1, and a connecting pin 100 is provided above the avoidance groove 101; the inner wall of the avoidance groove 101 is provided with a circle of insulation plates distributed along its contour, and the height of the insulation plates on each side of the inner wall of the avoidance groove 101 is not less than the distance between the corresponding side of the avoidance groove 101 and the slide rail 14.

[0042] Specifically, since the slide rail 14 itself protrudes from the bottom of the simulation box 1, each partition plate 10 is provided with an avoidance groove 101 at one end close to the bottom of the simulation box 1 for avoiding the slide rail 14. In order to ensure that there is no collision between the partition plate 10 and the slide rail 14 during rotation, the size of the avoidance groove 101 is larger than the size of the slide rail 14. Therefore, there will be a gap between the inner wall of the avoidance groove 101 and the slide rail 14. Since the high temperature chamber 11 and the low temperature chamber 13 are both at extreme temperatures of high or low temperatures, it is not easy to maintain and it is also easy to dissipate heat or cool. Therefore, the inner wall of the avoidance groove 101 is provided with a circle of insulation sheets distributed along its contour. The insulation sheets can be made of asbestos. Since the insulation sheets are flexible and can be easily deformed under the action of external force, the height of the insulation sheets on each side of the inner wall of the avoidance groove 101 is not less than the distance between the corresponding side of the avoidance groove 101 and the slide rail 14, which can avoid the temperature loss between the gaps as much as possible.

[0043] Furthermore, each partition plate 10 includes a connecting section 102 and a rotating section 103, one end of the connecting section 102 is fixedly connected to the top of the simulation box 1, and the other end is rotatably connected to one end of the rotating section 103, and the height of the rotating section 103 is not less than the minimum height allowing the fixed unit 2 with fixed engine compartment parts to pass through.

[0044] Specifically, since the partition plate 10 has to withstand the impact of the fixed trolley 20 with a relatively high speed for a long time, the partition plate 10 is a wearing part. In order to extend the life of the partition plate 10 as much as possible and reduce the damage thereon, the partition plate 10 includes two parts: a connecting section 102 and a rotating section 103. The connecting section 102 is fixed and mainly plays a connecting role, while the rotating section 103 can rotate under the impact of the fixed trolley 20, so that the fixed trolley 20 can be transferred between different chambers. Here, the structural setting of the two sections of the partition plate 10 reduces the weight of the partition plate 10 that needs to be rotated as much as possible. Therefore, the fixed trolley 20 can reduce the impact force, thereby reducing the impact force on the partition plate 10 to a certain extent, protecting the partition plate 10 as much as possible, extending its life, and making sliding easier to achieve for a certain period of time, thereby shortening the difficulty of transfer and the time of sliding.

[0045] For further information, see Figure 2 As shown, both ends of the simulation box 1 are provided with opening and closing doors 17, and the top or side of the opening and closing doors 17 are hinged to the simulation box 1; a driving groove 18 is provided on one side of the simulation box 1. Specifically, before the test begins, the engine compartment parts need to be installed and fixed on the fixed trolley 20, and then the fixed trolley 20 with the engine compartment parts fixed is sent into the simulation box. Therefore, both ends of the simulation box 1 are provided with opening and closing doors 17. The opening and closing doors 17 can be hinged to the top of the simulation box 1 like the partition plate 10, or can be hinged from the side like a normal cabinet door structure. Considering that it is difficult to fix from the top hinge, the side hinge method is preferably selected. In addition, from the perspective of structural design, the simulation box 1 is provided with four legs, and a platform is provided underneath to ensure the overall stability of the simulation box 1.

[0046] Furthermore, it also includes a driving unit, which includes at least one driving rod passing through the driving groove 18, the end of the driving rod extending into the simulation box 1 is connected to the fixed unit 2, and the end extending out of the simulation box 1 is connected to a driving member, which is arranged on the outer wall of the simulation box 1 and is used to drive the fixed unit 2 to slide relative to the simulation box 1 through the driving rod. Specifically, a driving groove 18 is provided on one side of the simulation box 1, and the driving rod passing through the driving groove 18 extends into the simulation box 1 and is connected to the fixed trolley 20, and the driving member on the other end is arranged on the side of the simulation box 1 where the driving groove 18 is provided, and can be directly arranged on the side wall of the simulation box 1, or can be placed on one side of the simulation box 1; in addition, the driving member can be directly a driving handle structure, in which case the fixed trolley 20 is manually driven to move by the operator, and the driving member can also be an electric member, such as a cylinder or other structure. From the perspective of time, it is preferred that the driving member is an electric member. In addition, if the driving member is an electric member, a driving slot 18 can also be opened at the bottom of the simulation box 1, and correspondingly, a driving unit is set at the bottom of the simulation box 1. In addition, the height dimension of the driving slot 18 is very small, and correspondingly, the driving rod has a flat structure.

[0047] Furthermore, it also includes a working condition simulation unit 3, which includes a plurality of spaced-apart water spraying components 30 and stone spraying components 31 and a temperature control device, wherein the water spraying component 30 is used to spray water into the high temperature chamber 11, the buffer chamber 12 and the low temperature chamber 13, the stone spraying component 31 is used to spray stone pellets of preset sizes into the high temperature chamber 11 and the low temperature chamber 13, and the temperature control device includes a heating component arranged in the high temperature chamber 11 and a cooling component arranged in the low temperature chamber 13.

[0048] Specifically, the temperature of the high temperature chamber 11 is independently controlled by the heating component, the temperature control range of the heating component is 40℃~300℃, the heating rate is 10℃ / min, the top of the high temperature chamber 11 is equipped with two symmetrically arranged water spray components 30, the water spray components 30 are connected to the water pipe outside the high temperature chamber 11, the liquid sprayed by the water spray components 30 includes water and chloride salt solution, the concentration of the chloride salt solution is not more than 10%, and the two sides of the high temperature chamber 11 are equipped with two symmetrically arranged stone spray components 31, which are used to spray stone balls with a diameter of 4 to 5mm, and the total weight of each stone ball sprayed is not less than 500g. Similarly, the temperature of the low temperature chamber 13 is independently controlled by the cooling component, the temperature control range of the cooling component is -70℃~150℃, and the cooling rate is 10℃ / min. In addition, the water spray component 30 and the stone spray component 31 can adjust the spray angle, and the partition plate 10 is made of aluminum alloy, and the surface is anodized.

[0049] Furthermore, since the vehicle vibrates during driving, and the vehicle will shake more violently when driving on a road with poor road conditions, the fixing unit 2 also includes a vibration table arranged on the top, and the vibration table is used to fix the engine compartment parts. The vibration table itself can vibrate to create a vibration environment for the engine compartment parts, so that the simulated environment is as close to the real environment as possible.

[0050] Specifically, the simulation scenarios generally include five scenarios: winter driving scenario, summer driving scenario, engine shutdown after climbing a hill scenario, coastal city driving scenario, and northern snowy weather driving scenario. Other scenarios can also be simulated according to actual simulation needs.

[0051] When simulating winter driving scenes, engine compartment parts are placed on the fixing unit 2 of the low temperature room 13, and the intake manifold is installed on the engine compartment parts. The parts are installed by pre-tightening multiple bolts, and the installation time is about 15 minutes. The engine compartment parts are fixed to the fixing unit 2 by bolts; then the connecting pins 100 on each partition plate 10 are locked, the fixing unit 2 is placed in the low temperature room 13, and the low temperature room 13 is cooled until it reaches -40℃ and maintained for 10 hours, completing the simulation of low temperature conditions. Then the connecting pins 100 on the partition plate 10 are unlocked, and the fixed trolley 20 is driven by the driving unit to drive the engine compartment parts through the buffer chamber 12 and then slide directly into the high temperature room 11. The high temperature room 11 is preheated to 120℃ and maintained for 0.5 hours. The sliding process takes about 3 seconds. Lock the connecting pins 100 on each partition plate 10 again, then raise the temperature in the high temperature chamber 11 to 120°C and maintain it for 2 hours, and at the same time, turn on the vibration, press the Z direction, 1.5G load, and hit it once every 15 minutes to complete the simulation of high temperature working conditions. After completion, unlock the connecting pins 100 on the partition plate 10, and drive the fixed trolley 20 through the drive unit to drive the engine compartment parts through the buffer chamber 12 and then return to the low temperature chamber 13. The low temperature chamber 13 is opened to -40°C in advance and maintained for 0.5 hours. The sliding process also takes about 3 seconds. After the above operation cycle is repeated 20 times, the fixing unit 2 is removed from the simulation box 1. It takes about 5 minutes to remove the bolts. The engine compartment parts are taken out to observe the appearance, and the parts are sampled to test the modulus.

[0052] When simulating the summer driving scene, the engine compartment parts are placed on the fixing unit 2 of the low temperature room 13, and the cylinder head cover is installed on the engine compartment parts. The parts are installed by pre-tightening with multiple bolts. The installation time is about 25 minutes. The engine compartment parts are fixed to the fixing unit 2 by bolts; then the connecting pins 100 on each partition plate 10 are locked, the fixing unit 2 is placed in the low temperature room 13, and the low temperature room 13 is cooled until it reaches 40°C and maintained for 10 hours, completing the simulation of low temperature conditions. Then the connecting pins 100 on the partition plate 10 are unlocked, and the fixed trolley 20 is driven by the driving unit to drive the engine compartment parts through the buffer chamber 12 and then slide directly into the high temperature room 11. The high temperature room 11 is preheated to 150°C and maintained for 0.5 hours. The sliding process takes about 3 seconds. Lock the connecting pins 100 on each partition plate 10 again, then raise the temperature in the high temperature chamber 11 to 150°C and maintain it for 2 hours, and at the same time, turn on the vibration, press the Z direction, 1.5G load, and hit it once every 15 minutes to complete the simulation of high temperature working conditions. After completion, unlock the connecting pins 100 on the partition plate 10, and drive the fixed trolley 20 through the drive unit to drive the engine compartment parts through the buffer chamber 12 and then return to the low temperature chamber 13. The low temperature chamber 13 is opened to 40°C in advance and maintained for 0.5 hours. The sliding process also takes about 3 seconds. After the above operation is cycled 20 times, remove the fixing unit 2 from the simulation box 1. It takes about 10 minutes to remove the bolts. Take out the engine compartment parts to observe the appearance, and take samples of the parts to test the modulus.

[0053] When simulating the scene of stalling after climbing, the engine compartment parts are placed on the fixed unit 2 of the low temperature room 13, and the engine decorative cover is installed on the engine compartment parts. The engine compartment parts are installed by pre-tightening through multiple bolts. The installation time is about 12 minutes. The engine compartment parts are fixed to the fixed unit 2 by bolts; then the connecting pins 100 on each partition plate 10 are locked, the fixed unit 2 is placed in the low temperature room 13, and the low temperature room 13 is cooled until it reaches 120℃ and maintained for 2 hours. At the same time, the vibration is turned on to complete the simulation of low temperature conditions. Then the connecting pins 100 on the partition plate 10 are unlocked, and the fixed trolley 20 is driven by the driving unit to drive the engine compartment parts through the buffer chamber 12 and then slide directly into the high temperature room 11. Before that, the high temperature room 11 is preheated to 200℃ and maintained for 0.5 hours. The sliding process takes about 3 seconds. Lock the connecting pins 100 on each partition plate 10 again, then raise the temperature in the high temperature chamber 11 to 200°C and maintain it for 0.25h to complete the simulation of high temperature working conditions. After completion, unlock the connecting pins 100 on the partition plate 10, and drive the fixed trolley 20 through the drive unit to drive the engine compartment parts through the buffer chamber 12 and then return to the low temperature chamber 13. The low temperature chamber 13 is opened to 120°C in advance and maintained for 0.5h. The sliding process also takes about 3s. After the above operation cycle is repeated 20 times, remove the fixing unit 2 from the simulation box 1. It takes about 4 minutes to remove the bolts. Take out the engine compartment parts to observe the appearance, and take samples of the parts to test the modulus.

[0054] When simulating the driving scene in a seaside city, the engine compartment parts are placed on the fixed unit 2 of the low temperature chamber 13, and the plastic oil pan is installed on the engine compartment parts. The parts are installed by pre-tightening through multiple bolts, and the installation time is about 25 minutes. The engine compartment parts are fixed to the fixed unit 2 by bolts; then the connecting pins 100 on each partition plate 10 are locked, the fixed unit 2 is placed in the low temperature chamber 13, and the low temperature chamber 13 is cooled until it reaches 40°C and maintained for 10 hours. At the same time, the sodium chloride solution with a concentration of 4.5% is sprayed to complete the simulation of low temperature conditions. Then the connecting pins 100 on the partition plate 10 are unlocked, and the fixed trolley 20 is driven by the driving unit to drive the engine compartment parts to slide directly into the high temperature chamber 11 after passing through the buffer chamber 12. The high temperature chamber 11 is preheated to 150°C and maintained for 0.5 hours. The sliding process takes about 3 seconds. Lock the connecting pins 100 on each partition plate 10 again, then raise the temperature in the high temperature chamber 11 to 150°C and maintain it for 2 hours, and at the same time, turn on the vibration, press the Z direction, 1.5G load, and hit it once every 15 minutes to complete the simulation of high temperature working conditions. After completion, unlock the connecting pins 100 on the partition plate 10, and drive the fixed trolley 20 through the drive unit to drive the engine compartment parts through the buffer chamber 12 and then return to the low temperature chamber 13. The low temperature chamber 13 is opened to 40°C in advance and maintained for 0.5 hours. The sliding process also takes about 3 seconds. After the above operation is cycled 20 times, remove the fixing unit 2 from the simulation box 1. It takes about 10 minutes to remove the bolts. Take out the engine compartment parts to observe the appearance, and take samples of the parts to test the modulus.

[0055] When simulating the driving scene in snowy weather in the north, the engine compartment parts are placed on the fixed unit 2 of the low temperature room 13, and the radiator water chamber is installed on the engine compartment parts. The parts are installed by pre-tightening through multiple bolts, and the installation time is about 12 minutes. The engine compartment parts are fixed to the fixed unit 2 by bolts; then the connecting pins 100 on each partition 10 are locked, the fixed unit 2 is placed in the low temperature room 13, and the low temperature room 13 is cooled until it reaches -20℃ and maintained for 10 hours, completing the simulation of low temperature conditions. Then the connecting pins 100 on the partition 10 are unlocked, and the fixed trolley 20 is driven by the driving unit to drive the engine compartment parts to slide directly into the high temperature room 11 after passing through the buffer room 12. The high temperature room 11 is preheated to 80℃ and maintained for 0.5 hours. The sliding process takes about 3 seconds. Lock the connecting pins 100 on each partition plate 10 again, then raise the temperature in the high temperature chamber 11 to 80°C and maintain it for 2 hours, and at the same time open it with vibration, press the Z direction, 1.5G load, and spray sodium chloride solution with a concentration of 10% to complete the simulation of high temperature working conditions. After completion, unlock the connecting pins 100 on the partition plate 10, and drive the fixed trolley 20 through the drive unit to drive the engine compartment parts through the buffer chamber 12 and then return to the low temperature chamber 13 again. The low temperature chamber 13 is opened to -20°C in advance and maintained for 0.5 hours. The sliding process also takes about 3 seconds. After the above operation is cycled 20 times, remove the fixing unit 2 from the simulation box 1. It takes about 4 minutes to remove the bolts. Take out the engine compartment parts to observe the appearance, and take samples of the parts to test the modulus.

[0056] Specifically, the tests of the above five scenarios are recorded as Examples 1-5, and each of the embodiments carried out in the above manner is compared with the comparative examples and effect examples, wherein the comparative examples are carried out in a simulated manner in different boxes using the low and high temperatures in the related technology, and the effect examples are actual tests carried out under the corresponding standard environment, such as Effect Example 1 is 10 days of durability on the road in Mohe, Effect Example 2 is 10 days of durability on the road in Turpan, Effect Example 3 is 2 days of durability on the road in a scenic area with a winding mountain road, Effect Example 4 is 10 days of durability on the road in Haikou, and Effect Example 5 is 10 days of durability on a snowy road in Qiqihar in winter. The results of conducting modulus tests on 5 different parts of the engine compartment parts in the comparative examples and embodiments and observing the appearance are shown in Table 1 below:

[0057] Table 1 Results of modulus tests on 5 different parts in the engine compartment in the comparative examples and embodiments

[0058]

[0059] It can be seen from the test results in Table 1 that, compared with the various effect examples of the actual test results of the whole vehicle, the performance test results of the embodiment are closer to the actual simulated working conditions of the whole vehicle than the comparative example.

[0060] This application also provides an engine performance verification simulation method, see Figure 3 As shown, the method is implemented using the above-mentioned engine performance verification simulation device, and the steps include:

[0061] Fix the engine compartment parts on the fixing unit 2, and place the fixing unit 2 in the high temperature chamber 11 or the low temperature chamber 13 to perform corresponding working condition tests;

[0062] After the corresponding working condition test is completed, the bottom of each partition plate 10 is separated from the bottom of the simulation box 1, and the fixing unit 2 is driven to slide relative to the simulation box 1 to the low-temperature chamber 13 or the high-temperature chamber 11 on the opposite side, so that the engine compartment parts can be transferred between the high-temperature chamber 11 and the low-temperature chamber 13 within a preset time, and then the next corresponding working condition test is carried out.

[0063] Among them, each step of the above-mentioned engine performance verification simulation method corresponds one by one to the specific structure of the above-mentioned engine performance verification simulation device, and its detailed steps and implementation process will not be repeated here one by one.

[0064] In the description of the present application, it should be noted that the terms "upper", "lower", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be a connection between the two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present application can be understood according to the specific circumstances.

[0065] It should be noted that, in this application, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the presence of other identical elements in the process, method, article or device including the elements.

[0066] The above description is only a specific implementation of the present application, so that those skilled in the art can understand or implement the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest range consistent with the principles and novel features applied for herein.

Claims

1. An engine performance verification simulation device, characterized in that: It includes: A simulation box (1) is provided with two partition plates (10) arranged at intervals therein, one end of the partition plate (10) is connected to the top of the simulation box (1), and the other end is detachably connected to the bottom of the simulation box (1), so as to sequentially divide the simulation box (1) into a high temperature chamber (11), a buffer chamber (12), and a low temperature chamber (13) arranged side by side; A fixing unit (2) is slidably disposed in the simulation box (1); wherein: The fixing unit (2) is used to fix the engine compartment parts, and is also used to slide relative to the simulation box (1) when all the partition plates (10) are separated from the bottom of the simulation box (1), and to drive the corresponding partition plate (10) to rotate when contacting the corresponding partition plate (10) during the sliding process, so that the engine compartment parts can be transferred between the high temperature chamber (11) and the low temperature chamber (13) within a preset time; Each of the partition plates (10) is provided with a connecting pin (100) at one end close to the bottom of the simulation box (1), and the connecting pin (100) is used to connect the corresponding end of the partition plate (10) to the bottom of the simulation box (1); The fixing unit (2) comprises a fixing trolley (20), and the fixing trolley (20) comprises four rollers (21) arranged at intervals; The bottom of the simulation box (1) is provided with a slide rail (14) arranged along its length direction, and both sides of the slide rail (14) are provided with slide grooves (16), and both sides of each slide groove (16) are provided with relatively extending parts, and the slide groove (16) is used to accommodate two rollers (21) located on the same side, and the extending part is used to keep the corresponding roller (21) in the slide groove (16), and the top of the slide groove (16) is provided with two fixed grooves (15) arranged at intervals along its length direction, and each of the fixed grooves (15) matches with one of the corresponding connecting pins (100); Each of the partition plates (10) is provided with an escape groove (101) at one end close to the bottom of the simulation box (1) for escaping the slide rail (14), and a connecting pin (100) is provided above the escape groove (101); The inner wall of the avoidance groove (101) is provided with a circle of heat-insulating sheets distributed along its contour, and the height of the heat-insulating sheets on each side of the inner wall of the avoidance groove (101) is not less than the distance between the corresponding side of the avoidance groove (101) and the slide rail (14); It also includes an operating condition simulation unit (3), wherein the operating condition simulation unit (3) includes: a plurality of water spraying assemblies (30) and stone spraying assemblies (31) arranged at intervals, wherein the water spraying assemblies (30) are used to spray water into the high temperature chamber (11), the buffer chamber (12) and the low temperature chamber (13), and the stone spraying assemblies (31) are used to spray stone pellets of a preset size into the high temperature chamber (11) and the low temperature chamber (13); The temperature control device comprises a heating component arranged in the high temperature chamber (11) and a cooling component arranged in the low temperature chamber (13).

2. An engine performance verification simulation device as claimed in claim 1, characterized in that: Each of the partition plates (10) comprises a connecting section (102) and a rotating section (103); one end of the connecting section (102) is fixedly connected to the top of the simulation box (1), and the other end is rotatably connected to one end of the rotating section (103); the height of the rotating section (103) is not less than the minimum height allowing the fixed unit (2) to which the fixed engine compartment parts are fixed to pass.

3. An engine performance verification simulation device as claimed in claim 1, characterized in that: Both ends of the simulation box (1) are provided with opening and closing doors (17), and the top or side of the opening and closing door (17) is hinged to the simulation box (1); A driving groove (18) is provided on one side of the simulation box (1).

4. An engine performance verification simulation device as claimed in claim 3, characterized in that: The driving unit further comprises a driving unit, wherein the driving unit comprises at least one driving rod penetrating the driving groove (18), wherein one end of the driving rod extending into the simulation box (1) is connected to the fixing unit (2), and the other end extending out of the simulation box (1) is connected to a driving member, wherein the driving member is arranged on the outer wall of the simulation box (1) and is used to drive the fixing unit (2) to slide relative to the simulation box (1) via the driving rod.

5. An engine performance verification simulation device as claimed in claim 1, characterized in that: The fixing unit (2) comprises a vibration table arranged on the top, and the vibration table is used to fix the engine compartment parts.

6. An engine performance verification simulation method, which is implemented using the engine performance verification simulation device as claimed in claim 1, characterized in that: The steps include: Fixing engine compartment parts on a fixing unit (2), and placing the fixing unit (2) in a high temperature chamber (11) or a low temperature chamber (13) to perform a corresponding operating condition test; After the corresponding working condition test is completed, the bottom of each partition plate (10) is separated from the bottom of the simulation box (1), and the fixing unit (2) is driven to slide relative to the simulation box (1) to the low-temperature chamber (13) or high-temperature chamber (11) on the opposite side, so that the engine compartment parts can be transferred between the high-temperature chamber (11) and the low-temperature chamber (13) within a preset time, and then the next corresponding working condition test is carried out.

Images