A system and method for handling virtual development bench hardware-in-the-loop heat dissipation

Abstract

The application discloses a system and method for processing virtual development bench hardware-in-the-loop heat dissipation, and is used for improving a hardware-in-the-loop running environment. The system comprises a flat plate heat exchange module, a fan module, an oil inlet pipeline, a fan control module, a hardware-in-the-loop cabinet, an oil outlet pipeline, an oil quantity measurement unit, an oil sprayer, a cooling oil tank, a temperature sensor, a cooling tank connecting pipeline and an oil circulation pump. The flat plate heat exchange module is connected with the oil inlet pipeline, the cooling tank connecting pipeline, the cooling oil tank and the oil outlet pipeline in sequence. The flat plate heat exchange module is provided with the fan module on one side, the fan module is connected with the fan control module, the hardware-in-the-loop cabinet is connected with the fan control module, the temperature sensor and the oil circulation pump, the temperature sensor is arranged on the cooling tank connecting pipeline and the sensing head of the temperature sensor is immersed in the oil medium, the oil circulation pump is installed at the connecting port of the cooling tank connecting pipeline and the oil inlet pipeline, and the oil quantity measurement unit and the oil sprayer are both installed on the cooling oil tank and the heads of the oil quantity measurement unit and the oil sprayer are both immersed in the oil medium to a preset depth.

Description

Technical Field

[0001] This application relates to the field of mechatronics technology, and in particular to a system and method for handling in-loop heat dissipation of virtual development bench hardware. Background Technology

[0002] Virtual engine development benches are an emerging technology in the field of engine research and development. This technology integrates hardware-in-the-loop (HIL) technology with high-precision controlled object modeling and simulation technology capable of real-time operation, providing a working platform that traditional engine benches cannot provide for many tasks in the engine development process. Specifically, the HIL technology involves placing the controller and key actuators within a HIL system. Signals from the controller first pass through the HIL system's boards before connecting to the corresponding actuators, including EGR valves, throttle valves, fuel injectors, and fuel metering units.

[0003] Unlike real-world systems, in a virtual development bench, actuators are detached from their actual operating environment during testing. This means that these actuators, driven by controller signals in a traditional hardware-in-the-loop system, operate outside the real-world operating environment. For example, fuel injectors and fuel metering units do not operate under the specific temperature, pressure, and injection conditions required by a high-pressure fuel pump, high-pressure fuel lines, and common rail connection; they lack the high-pressure and low-pressure diesel fuel environment of a real engine. Furthermore, in hardware-in-the-loop testing, multiple injectors typically operate simultaneously; for example, a six-cylinder engine might have six injectors.

[0004] However, when multiple injectors are working or being tested for a long time, they are prone to generating a lot of heat. If the heat cannot be dissipated quickly and effectively, it will affect the service life of the injectors and the overall hardware-in-the-loop operating environment. Summary of the Invention

[0005] To address the aforementioned issues, this application provides a system and method for handling hardware-in-the-loop heat dissipation in a virtual development bench, which improves the lifespan of fuel injectors in the hardware-in-the-loop and enhances the overall operating environment of the hardware-in-the-loop.

[0006] The first aspect of this application provides a system for handling hardware-in-the-loop heat dissipation of a virtual development bench, comprising:

[0007] Flat plate heat exchange module, fan module, oil inlet pipeline, fan control module, hardware-in-the-loop cabinet, oil outlet pipeline, oil metering unit, injector, cooling oil tank, temperature sensor, cooling tank connecting pipeline and oil circulation pump;

[0008] The flat plate heat exchange module is sequentially connected to the oil inlet pipe, the cooling tank connecting pipe, the cooling oil tank, and the oil outlet pipe to form a circulation path for the oil medium, and the oil medium is contained in the cooling oil tank.

[0009] The fan module is provided on one side of the flat plate heat exchange module, and the fan module is connected to the fan control module, which is connected to the hardware-in-the-loop cabinet.

[0010] The hardware-in-the-loop cabinet is also connected to the temperature sensor and the oil circulation pump. The temperature sensor is installed on the cooling tank connecting pipe, and its sensing head is immersed in the oil medium in the pipe.

[0011] The oil circulation pump is installed at the connection port between the cooling tank connecting pipe and the oil inlet pipe, so as to realize the on-off control of the cooling tank connecting pipe and the oil inlet pipe and the circulation and pumping control of the oil medium through the oil circulation pump.

[0012] Both the oil metering unit and the injector are mounted on the cooling oil tank, and the heads of both the oil metering unit and the injector are immersed in the oil medium to a preset depth.

[0013] Optionally, the system further includes:

[0014] First clamping sleeve, first fastener, second clamping sleeve, and second fastener;

[0015] The cooling oil tank includes a top cover plate. The top cover plate is provided with a first sliding groove, a first through hole, a second sliding groove, and a second through hole. The first sliding groove is symmetrically arranged on both sides of the first through hole and connected to the first through hole. The second sliding groove is symmetrically arranged on both sides of the second through hole and connected to the second through hole.

[0016] The first clamping sleeve has a first sleeve through hole and a first mounting hole. The head of the oil metering unit passes through the first sleeve through hole and the first through hole and is built into the cooling oil tank and immersed in the oil medium to a preset depth. The tail of the oil metering unit is mounted on the top cover plate of the oil tank through the first clamping sleeve, and the first fastener passes through the first slide groove and the first mounting hole to fix the first clamping sleeve, so as to fix the oil metering unit.

[0017] The second clamping sleeve has a second clamping sleeve through hole and a second mounting hole. The head of the injector passes through the second clamping sleeve through hole and the second through hole and is embedded in the cooling oil tank and immersed in the oil medium to a preset depth. The tail of the injector is mounted on the top cover plate of the oil tank through the second clamping sleeve. The second fastener passes through the second sliding groove and the second mounting hole to fix the second clamping sleeve, so as to fix the injector.

[0018] Optionally, the system further includes:

[0019] The first shock-absorbing pad is disposed between the oil metering unit and the top cover plate of the oil tank.

[0020] Optionally, the first clamping sleeve is two semi-circular clamping sleeves, and the inner surface of the semi-circular clamping sleeves is bonded with shock-absorbing pads. The semi-circular clamping sleeves are made by cutting a one-piece circular clamping sleeve symmetrically at the center.

[0021] The oil metering unit is installed on the top cover plate of the oil tank by the clamping fit of the two semi-circular clamping sleeves and is fixedly connected by the first fastener.

[0022] Optionally, both the oil metering unit and the injector head are immersed in the oil medium to a depth of at least 7 mm, so that the valve switching assembly of the oil metering unit and the precision assembly of the injector are immersed in the oil medium.

[0023] Optionally, the system further includes:

[0024] At least two hoses and at least two clamps;

[0025] The first end of the flat plate heat exchange module is connected to the oil inlet pipe through the hose and the clamp, and the second end is connected to the oil outlet pipe through the hose and the clamp.

[0026] Optionally, the system further includes:

[0027] Sensor mount and locking nut;

[0028] The sensor base is welded to the cooling tank connecting pipe, and the temperature sensor is fixedly installed on the cooling tank connecting pipe by the sensor base and the locking nut.

[0029] Optionally, the temperature sensor is inserted into the cooling tank connecting pipe to a depth greater than two-thirds of the pipe diameter, and the sensor head is immersed in the oil medium.

[0030] Optionally, the first drive power supply GND and the second drive power supply VCC of the fan control module are respectively connected to the programmable power supply 12V output BN0 interface of the hardware-in-the-loop cabinet;

[0031] The first input port VCC and the second input port GND of the oil circulation pump are serially connected to the programmable power supply BN1 interface of the hardware-in-the-loop cabinet.

[0032] A second aspect of this application provides a method for handling hardware-in-the-loop heat dissipation of a virtual development bench, the method being applied to the system described in the first aspect above, the method comprising:

[0033] After the hardware-in-the-loop enters the test state, the oil medium in the cooling oil tank absorbs the heat conducted by the injector and oil metering unit during operation, and the oil circulation pump controlled by the hardware-in-the-loop cabinet drives the oil medium to circulate along the circulation path from the oil inlet pipe to the oil outlet pipe.

[0034] The temperature of the oil medium in the cooling tank connection pipe is measured by a temperature sensor to obtain temperature information, and the temperature information is sent to the hardware loop cabinet.

[0035] After the hardware-in-the-loop cabinet determines the pulse width modulation (PWM) signal based on the temperature information, it sends the PWM signal to the fan control module.

[0036] Based on the PWM signal, the fan control module controls the fan speed, so that the fan module rotates according to the fan speed to form a negative pressure in the area, thereby causing the airflow at the front end of the flat plate heat exchange module to flow through the flat plate heat exchange module to the fan module, so that the airflow absorbs heat from the oil medium when it flows through the flat plate heat exchange module.

[0037] As can be seen from the above technical solutions, this application has the following advantages:

[0038] The system in this application includes a flat plate heat exchange module, a fan module, an oil inlet pipeline, a fan control module, a hardware-in-the-loop cabinet, an oil outlet pipeline, an oil metering unit, an injector, a cooling oil tank, a temperature sensor, a cooling tank connecting pipeline, and an oil circulation pump.

[0039] During operation, the oil medium absorbs the heat generated by the injectors and oil metering unit, and the oil medium is driven by the oil circulation pump to circulate along the oil inlet and outlet pipelines. The temperature sensor measures the temperature of the oil medium in the cooling tank connection pipeline, obtains the temperature information, and sends it to the hardware-in-the-loop cabinet. The hardware-in-the-loop cabinet determines the PWM signal based on the temperature information and sends it to the fan control module. The fan control module controls the fan speed according to the PWM signal, so that the fan module rotates according to the airflow speed to dissipate heat from the oil medium flowing through the flat plate heat exchange module, absorbs the heat in the oil medium, improves the service life of the injectors, and enhances the operating environment of the hardware-in-the-loop.

[0040] In addition, while the oil medium carries away heat, the oil metering unit and the injector are immersed in the oil medium to a preset depth, which can lubricate the working parts immersed in the oil medium, reduce friction and wear during dry spraying, and further extend their service life. Attached Figure Description

[0041] Figure 1 A schematic diagram of an embodiment of the system for handling hardware-in-the-loop heat dissipation of a virtual development bench provided in this application;

[0042] Figure 2 A top view of the top cover plate of the cooling oil tank in the system for processing virtual development bench hardware-in-the-loop heat dissipation provided in this application.

[0043] Figure 3 A schematic diagram of a single-sided positive structure of a clamping sleeve in a system for processing virtual development bench hardware with on-loop heat dissipation provided in this application;

[0044] Figure 4 The diagram shows the top and front views of the first shock-absorbing pad in the system for processing virtual development bench hardware in the loop heat dissipation provided in this application. Detailed Implementation

[0045] This application provides a system and method for handling hardware-in-the-loop heat dissipation in a virtual development bench, which is used to improve the service life of the injectors in the hardware-in-the-loop and enhance the overall operating environment of the hardware-in-the-loop.

[0046] In this application, the terms "upper", "lower", "left", "right", "front", "rear", "top", "bottom", "inner", "outer", "middle", "vertical", "horizontal", "lateral", "longitudinal" and other terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only used to describe the relative positional relationship between the components or parts and do not specifically limit the specific installation orientation of each component or part.

[0047] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0048] Furthermore, the terms "installation," "setup," "equipped with," "connection," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0049] Furthermore, the structures, proportions, sizes, etc., drawn in the accompanying drawings of this application are only used to complement the content disclosed in the specification for those skilled in the art to understand and read, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modification to the structure, change in the proportional relationship, or adjustment of the size, without affecting the effects and purposes that this application can produce, should still fall within the scope of the technical content disclosed in this application.

[0050] Furthermore, the terms “first,” “second,” “third,” etc., as used in this application (if applicable), are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such terms can be used interchangeably where appropriate so that the embodiments described in this application can be implemented in a sequence other than that illustrated or described herein.

[0051] The technical solutions of this application will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0052] Please see Figures 1 to 4 The system for handling hardware-in-the-loop heat dissipation of virtual development benches provided in this application includes:

[0053] The system comprises a flat plate heat exchange module 1, a fan module 2, an oil inlet pipe 3, a fan control module 4, a hardware-in-the-loop cabinet 5, an oil outlet pipe 6, an oil metering unit 7, an injector 11, a cooling oil tank 14, a temperature sensor 15, a cooling tank connecting pipe 16, and an oil circulation pump 17. The flat plate heat exchange module 1 is sequentially connected to the oil inlet pipe 3, the cooling tank connecting pipe 16, the cooling oil tank 14, and the oil outlet pipe 6 to form a circulation path for the oil medium, which is contained in the cooling oil tank 14. A fan module 2 is located on one side of the flat plate heat exchange module 1, and the fan module 2 is connected to the fan control module 4. The fan control module 4 is connected to the hardware-in-the-loop cabinet 5, an oil outlet pipe 6, an oil metering unit 7, an injector 11, a cooling oil tank 14, a temperature sensor 15, a cooling tank connecting pipe 16, and an oil circulation pump 17. The hardware in the ring cabinet 5 is also connected to a temperature sensor 15 and an oil circulation pump 17. The temperature sensor 15 is installed on the cooling tank connecting pipe 16, and its sensing head is immersed in the oil medium in the pipe. The oil circulation pump 17 is installed at the connection port between the cooling tank connecting pipe 16 and the oil inlet pipe 3, so as to realize the on-off control of the cooling tank connecting pipe 16 and the oil inlet pipe 3 and the circulation and pumping control of the oil medium through the oil circulation pump 17. The oil metering unit 7 and the injector 11 are both installed on the cooling oil tank 14, and the heads of the oil metering unit 7 and the injector 11 are immersed in the oil medium to a preset depth.

[0054] The plate heat exchange module 1 can be a plate heat exchanger, with heat exchange pipes installed inside. One end of the heat exchange pipes is connected to the oil inlet pipe 3, and the other end is connected to the oil outlet pipe 6. The fan module 2 is mainly a fan, which can be a PWM fan with PWM speed control. The fan is located on one side of the plate heat exchange module 1, specifically on the right side of the plate heat exchange module 1, with its air outlet facing the plate heat exchange module 1. It should be noted that the fan can also be located on the left side or other sides of the plate heat exchange module 1; this is not limited here. The plate heat exchange module 1 and the fan module 2 are collectively referred to as the cooling module. The cooling module specifically uses the fan to accelerate the airflow in the area where the plate heat exchange module 1 is located, thereby achieving the heat dissipation function. Specifically, the hardware-in-the-loop cabinet 5 acts as the controller of the entire hardware-in-the-loop system. It is connected to the fan control module 4, and then the fan control module 4 is connected to the fan module 2. The fan power of the fan module 2 can be controlled by the fan control module 4, thereby controlling the rotation speed of the fan module 2 through the hardware-in-the-loop cabinet 5 and the fan control module 4 to achieve fan heat dissipation.

[0055] Furthermore, the fuel metering unit 7 and the injector 11 are mounted on the cooling oil tank 14. The cooling oil tank 14 contains an oil medium, which can be engine oil or other oil media. The heads of both the fuel metering unit 7 and the injector 11 are immersed to a predetermined depth in the oil medium within the cooling oil tank 14 to ensure that the working end components of both the fuel metering unit 7 and the injector 11 are submerged in the oil medium. For example, the heads of the oil metering unit 7 and the injector 11 can be immersed in the oil medium to a depth of at least 7 mm. That is, at least 7 mm from the front end of the oil metering unit 7 and the injector 11 head needs to be immersed in the oil medium. This ensures that the valve switching assembly at the working end of the oil metering unit 7 and the precision assembly at the working end of the injector 11 are both immersed in the oil medium. In this way, the oil medium lubricates the valve switching assembly at the working end of the oil metering unit 7 and the precision assembly in the injector 11, reducing friction and wear when the oil metering unit 7 and the injector 11 are dry-spraying during actual operation, and extending the service life of the hardware-in-the-loop components.

[0056] It should be noted that the fuel metering unit 7, the fuel injector 11, and the hardware-in-the-loop cabinet 5 are part of the virtual development bench hardware-in-the-loop, that is, the fuel metering unit 7 and the fuel injector 11 are the actuators in the hardware-in-the-loop, and the hardware-in-the-loop cabinet 5 is the controller in the hardware-in-the-loop. Their specific structure and connection relationship are existing technologies and will not be described in detail here.

[0057] Optionally, the system further includes a first clamping sleeve 9, a first fastener 10, a second clamping sleeve 12, and a second fastener 13; the cooling oil tank 14 includes a top cover plate, which has a first sliding groove, a first through hole, a second sliding groove, and a second through hole. The first sliding groove is symmetrically arranged on both sides of the first through hole and connected to it, and the second sliding groove is symmetrically arranged on both sides of the second through hole and connected to it; the first clamping sleeve 9 has a first sleeve through hole and a first mounting hole, and the head of the oil metering unit 7 passes through the first sleeve through hole and the first through hole and is built into the cooling oil tank 14 and immersed in the oil medium to a preset depth; the oil metering unit 7 The tail end is mounted on the top cover plate of the oil tank through the first clamping sleeve 9, and the first fastener 10 passes through the first sliding groove and the first mounting hole to fix the first clamping sleeve 9, so as to fix the oil metering unit 7; the second clamping sleeve 12 is provided with a second sleeve through hole and a second mounting hole. The head of the injector 11 passes through the second sleeve through hole and the second through hole and is built into the cooling oil tank 14 and immersed in the oil medium to a preset depth. The tail end of the injector 11 is mounted on the top cover plate of the oil tank through the second clamping sleeve 12, and the second fastener 13 passes through the second sliding groove and the second mounting hole to fix the second clamping sleeve 12, so as to fix the injector 11.

[0058] In this embodiment, the top cover plate of the cooling oil tank 14 is designed as follows: Figure 2As shown. The first through hole of the top cover plate of the oil tank is a circular hole, the diameter of which is greater than or equal to the outer diameter of the head of the oil metering unit 7. The width of the first groove on both sides of the first through hole matches the size of the first fastener 10. Specifically, the diameter L of the first through hole can be set to 4cm, the width a of the first groove on both sides can be 0.6mm, and the total length of the first groove can be 6cm. Similarly, the diameter of the second through hole is greater than or equal to the size of the injector 11, and the width of the second groove matches the size of the second fastener 13. The first fastener 10 and the second fastener 13 can specifically be bolt and nut assemblies. When installing the oil metering unit 7, the head of the oil metering unit 7 faces the inside of the cooling oil tank 14 and is immersed in the oil medium from 7mm above the head. The first sliding groove is aligned with the first mounting hole on the first clamping sleeve 9, and the bolt in the first fastener 10 passes through the first sliding groove and the first mounting hole. After clamping the oil metering unit 7 through the first sleeve through hole of the first clamping sleeve 9, the bolt and nut are tightened to achieve the fixed installation of the oil metering unit 7 on the cooling oil tank 14. It should be noted that the installation method of the injector 11 on the cooling oil tank 14 is similar to that of the oil metering unit 7, and will not be described in detail here.

[0059] In this embodiment, by designing through holes in the top cover plate of the cooling oil tank 14 and strip-shaped slides that are easy to adapt to different sizes, the oil metering unit 7 and injector 11 of different radial sizes can be installed on the top cover plate of the cooling oil tank 14, thus achieving diverse installation of ring components of different sizes.

[0060] Optionally, the first clamping sleeve 9 consists of two semi-circular clamping sleeves, with shock-absorbing pads bonded to the inner surface of the semi-circular clamping sleeves. The semi-circular clamping sleeves are made by centrally symmetrically cutting an integrally formed circular clamping sleeve. The oil metering unit 7 is installed on the top cover plate of the oil tank through the clamping fit of the aforementioned two semi-circular clamping sleeves and is fixedly connected by the first fastener 10.

[0061] In this embodiment, to facilitate processing and reduce processing costs, the first clamping sleeve 9 is processed as a single unit during the outer shape and through-hole processing. After processing, it is cut into two centrally symmetrical parts, thus forming two independent semi-circular clamping sleeves. The front view of one side is shown below. Figure 3 As shown. It should be noted that when cutting the first clamping sleeve into two centrally symmetrical parts, specifically the first sleeve through hole of the first clamping sleeve is cut into two centrally symmetrical semi-circular sleeve through holes, while maintaining the integrity of its first mounting hole.

[0062] When installing the oil metering unit 7, first, with the bolt head of the first fastener 10 facing down and the stud facing up on the top cover plate of the oil tank, slightly clamp the top cover plate of the oil tank between the bolt head and the nut, and insert the bolt into the first sliding groove through the first through hole. Then, insert the oil metering unit 7 head-down into the first through hole. Finally, align the first mounting hole on the first clamping sleeve 9 with the sliding groove, and pass the pre-installed bolt stud through the first mounting hole. After installing the bolt, nut, and first clamping sleeve 9 on both sides using the above method, push the sleeves on both sides to clamp the oil metering unit 7, and tighten the nut to complete the installation of the oil metering unit 7.

[0063] In this embodiment, the design of the first clamping sleeve 9, the first sliding groove, and the first through hole can accommodate oil metering units 7 with different radial dimensions or be installed in ring components, thereby increasing versatility.

[0064] Furthermore, a 1mm thick shock-absorbing pad can be adhered to the inner surface of the semi-circular hole of the first clamping sleeve 9 using adhesive to absorb the vibration generated during the operation of the oil metering unit 7, thereby achieving a vibration reduction effect.

[0065] Optionally, the second clamping sleeve 12 is also configured as two semi-circular clamping sleeves. These semi-circular clamping sleeves are manufactured by symmetrically cutting a one-piece circular clamping sleeve at its center. The manufacturing method is similar to that of the first clamping sleeve 9, and will not be described in detail here. The injector 11 is fixedly mounted on the top cover plate of the oil tank through the clamping engagement of the two semi-circular clamping sleeves cut from the second clamping sleeve 12 and the second fastener 13. Its installation method is similar to that of the aforementioned oil metering unit 7, and will not be described in detail here.

[0066] Optionally, the system also includes a first shock-absorbing pad 8, which is disposed between the oil metering unit 7 and the top cover plate of the oil tank.

[0067] Among them, the first shock-absorbing pad 8 is an annular shock-absorbing rubber pad, such as Figure 4 As shown. The outer diameter of the annular damping pad matches the tail size of the oil metering unit 7, and the inner diameter matches the head size of the oil metering unit 7. The annular damping pad has a preset thickness to improve its damping performance. For example, the thickness b of the annular damping pad is 2mm, or it can be other thicknesses, which are not limited here.

[0068] In this embodiment, before installing the oil metering unit 7 onto the top cover plate of the oil tank, the first shock-absorbing pad 8 is first installed into the head of the oil metering unit 7. The annular surface of the first shock-absorbing pad 8 is then fitted with the stepped surface between the head and tail of the oil metering unit 7. The oil metering unit 7 is then installed into the first through hole of the top cover plate of the oil tank with the head facing down, so that the first shock-absorbing pad 8 is installed between the oil metering unit 7 and the top cover plate of the oil tank, absorbing the vibration generated when the oil metering unit 7 is working, and achieving a vibration reduction effect.

[0069] Optionally, the system also includes a sensor mount and a locking nut; the sensor mount is welded to the cooling tank connecting pipe 16, and the temperature sensor 15 is fixedly mounted on the cooling tank connecting pipe 16 by the sensor mount and the locking nut. Further, the insertion depth of the temperature sensor 15 into the cooling tank connecting pipe 16 is greater than two-thirds of the pipe diameter, ensuring that the sensor head of the temperature sensor 15 is immersed in the oil medium within the cooling tank connecting pipe 16, thereby improving the temperature detection effect of the temperature sensor 15 on the oil medium.

[0070] Optionally, the system also includes at least two hoses and at least two clamps; the first end of the flat plate heat exchange module 1 is connected to the oil inlet pipe 3 via hoses and clamps, and the second end is connected to the oil outlet pipe 6 via hoses and clamps. In this embodiment, the hose connection not only facilitates the connection but also improves the sealing performance of the connection between the flat plate heat exchange module 1 and the oil inlet pipe 3 and the oil outlet pipe 6. Furthermore, the clamp fixation not only facilitates operation and disassembly but also allows for easy replacement of damaged clamps or hoses.

[0071] Optionally, the positive and negative output terminals of the fan control module 4 are connected to the positive and negative input terminals of the fan module 2. The first drive power supply GND and the second drive power supply VCC of the fan control module 4 are respectively connected to the programmable power supply 12V output BN0 interface of the hardware-in-the-loop cabinet 5. The first input port VCC and the second input port GND of the oil circulation pump 17 are serially connected to the programmable power supply BN1 interface of the hardware-in-the-loop cabinet 5, so that the hardware-in-the-loop cabinet 5 can control the fan control module 4 and the oil circulation pump 17.

[0072] The system provided in this application has been described above. Based on the system described above, the heat dissipation principle or method implemented for the hardware-in-the-loop of the virtual development bench is as follows:

[0073] After the hardware-in-the-loop enters the test state, the oil medium in the cooling oil tank 14 absorbs the heat conducted by the injector 11 and the oil metering unit 7 during operation. That is, the injector 11 and the oil metering unit 7 conduct the heat dissipated during operation to the oil medium, and then the oil medium that has absorbed the heat flows in the circulation path. When it flows through the flat plate heat exchange module 1, the heat is dissipated by the rotation of the fan on one side.

[0074] Specifically, firstly, the control switch of the oil circulation pump 17 is connected in series with the switch of the hardware-in-the-loop cabinet 5. Then, after the system is powered on and the hardware-in-the-loop is powered on, and the hardware-in-the-loop enters the test state, the oil circulation pump 17 drives the oil medium to circulate counterclockwise, that is, drives the oil medium to circulate along the circulation pipeline between the cooling oil tank 14, the cooling tank connecting pipe 16, the oil inlet pipe 3, the flat plate heat exchanger, and the oil outlet pipe 6. The temperature sensor 15 measures the oil temperature at the cooling tank connecting pipe 16, determines the temperature information, and transmits the temperature information to the hardware-in-the-loop cabinet 5 to determine and output a pulse width modulation (PWM) signal. In one possible embodiment, the temperature sensor 15 transmits the temperature information to the analog input board channel in the hardware-in-the-loop cabinet 5. After receiving the temperature information, the board channel, in conjunction with the internal SIMULINK interface model, queries the duty cycle value of the board's PWM channel according to the pre-calibrated characteristic curve, and outputs a PWM signal with an amplitude of 5V and a target frequency on the corresponding channel based on this value. Then, the output PWM signal is transmitted to the fan control module 4. The fan control module 4 controls the terminal voltage of the fan module 2 according to the PWM signal, thereby controlling the controlled speed of the fan output by the fan module 2, accelerating the airflow circulation in the area where the flat plate heat exchange module 1 is located, and removing the heat of the oil medium in the flat plate heat exchange module 1. In one possible embodiment, the fan control module 4 controls the controlled speed output by the fan module 2, so that the fan module 2 rotates to form a negative pressure in the area, thereby causing the airflow at the front end of the flat plate heat exchange module 1 to flow through the flat plate heat exchange module 1 to the low-pressure area behind the fan module 2. When the airflow flows through the flat plate heat exchange module 1, it removes the heat from the cooling oil. The cooled oil medium re-enters the cooling oil tank 14 to absorb the heat generated by the oil metering unit 7 and the injector 11 during operation, thereby improving the service life of the injector in the hardware-in-the-loop and improving the overall hardware-in-the-loop operating environment.

[0075] It should be noted that the above description of the disclosed embodiments enables those skilled in the art to implement or use this application. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the scope of this application. Therefore, this application is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A system for handling hardware-in-the-loop heat dissipation of a virtual development bench, characterized in that, The system includes: Flat plate heat exchange module, fan module, oil inlet pipeline, fan control module, hardware-in-the-loop cabinet, oil outlet pipeline, oil metering unit, injector, cooling oil tank, temperature sensor, cooling tank connecting pipeline and oil circulation pump; The flat plate heat exchange module is sequentially connected to the oil inlet pipe, the cooling tank connecting pipe, the cooling oil tank, and the oil outlet pipe to form a circulation path for the oil medium, and the oil medium is contained in the cooling oil tank. The fan module is provided on one side of the flat plate heat exchange module, and the fan module is connected to the fan control module, which is connected to the hardware-in-the-loop cabinet. The hardware-in-the-loop cabinet is also connected to the temperature sensor and the oil circulation pump. The temperature sensor is installed on the cooling tank connecting pipe, and its sensing head is immersed in the oil medium in the pipe. The oil circulation pump is installed at the connection port between the cooling tank connecting pipe and the oil inlet pipe, so as to realize the on-off control of the cooling tank connecting pipe and the oil inlet pipe and the circulation and pumping control of the oil medium through the oil circulation pump. Both the oil metering unit and the injector are mounted on the cooling oil tank, and the heads of both the oil metering unit and the injector are immersed in the oil medium to a preset depth.

2. The system according to claim 1, characterized in that, The system also includes: First clamping sleeve, first fastener, second clamping sleeve, and second fastener; The cooling oil tank includes a top cover plate. The top cover plate is provided with a first sliding groove, a first through hole, a second sliding groove, and a second through hole. The first sliding groove is symmetrically arranged on both sides of the first through hole and connected to the first through hole. The second sliding groove is symmetrically arranged on both sides of the second through hole and connected to the second through hole. The first clamping sleeve has a first sleeve through hole and a first mounting hole. The head of the oil metering unit passes through the first sleeve through hole and the first through hole and is built into the cooling oil tank and immersed in the oil medium to a preset depth. The tail of the oil metering unit is mounted on the top cover plate of the oil tank through the first clamping sleeve, and the first fastener passes through the first slide groove and the first mounting hole to fix the first clamping sleeve, so as to fix the oil metering unit. The second clamping sleeve has a second clamping sleeve through hole and a second mounting hole. The head of the injector passes through the second clamping sleeve through hole and the second through hole and is embedded in the cooling oil tank and immersed in the oil medium to a preset depth. The tail of the injector is mounted on the top cover plate of the oil tank through the second clamping sleeve. The second fastener passes through the second sliding groove and the second mounting hole to fix the second clamping sleeve, so as to fix the injector.

3. The system according to claim 2, characterized in that, The system also includes: The first shock-absorbing pad is disposed between the oil metering unit and the top cover plate of the oil tank.

4. The system according to claim 2, characterized in that, The first clamping sleeve consists of two semi-circular clamping sleeves. The inner surface of the semi-circular clamping sleeves is bonded with shock-absorbing pads. The semi-circular clamping sleeves are made by cutting a one-piece circular clamping sleeve symmetrically at the center. The oil metering unit is installed on the top cover plate of the oil tank by the clamping fit of the two semi-circular clamping sleeves and is fixedly connected by the first fastener.

5. The system according to claim 1, characterized in that, Both the oil metering unit and the injector head are immersed in the oil medium to a depth of at least 7 mm, so that the valve switching assembly of the oil metering unit and the precision assembly of the injector are immersed in the oil medium.

6. The system according to any one of claims 1 to 5, characterized in that, The system also includes: At least two hoses and at least two clamps; The first end of the flat plate heat exchange module is connected to the oil inlet pipe through the hose and the clamp, and the second end is connected to the oil outlet pipe through the hose and the clamp.

7. The system according to any one of claims 1 to 5, characterized in that, The system also includes: Sensor mount and locking nut; The sensor base is welded to the cooling tank connecting pipe, and the temperature sensor is fixedly installed on the cooling tank connecting pipe by the sensor base and the locking nut.

8. The system according to claim 7, characterized in that, The temperature sensor is inserted into the cooling tank connecting pipe to a depth greater than two-thirds of the pipe diameter, and the sensor head is immersed in the oil medium.

9. The system according to any one of claims 1 to 5, characterized in that, The first drive power supply GND and the second drive power supply VCC of the fan control module are respectively connected to the programmable power supply 12V output BN0 interface of the hardware-in-the-loop cabinet. The first input port VCC and the second input port GND of the oil circulation pump are serially connected to the programmable power supply BN1 interface of the hardware-in-the-loop cabinet.

10. A method for handling hardware-in-the-loop heat dissipation of a virtual development bench, characterized in that, The method is applied to the system according to any one of claims 1 to 9, and the method includes: After the hardware-in-the-loop enters the test state, the oil medium in the cooling oil tank absorbs the heat conducted by the injector and oil metering unit during operation, and the oil circulation pump controlled by the hardware-in-the-loop cabinet drives the oil medium to circulate along the circulation path from the oil inlet pipe to the oil outlet pipe. The temperature of the oil medium in the cooling tank connection pipe is measured by a temperature sensor to obtain temperature information, and the temperature information is sent to the hardware loop cabinet. After the hardware-in-the-loop cabinet determines the pulse width modulation (PWM) signal based on the temperature information, it sends the PWM signal to the fan control module. Based on the PWM signal, the fan control module controls the fan speed, so that the fan module rotates according to the fan speed to form a negative pressure in the area, thereby causing the airflow at the front end of the flat plate heat exchange module to flow through the flat plate heat exchange module to the fan module, so that the airflow absorbs heat from the oil medium when it flows through the flat plate heat exchange module.

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