Method and device for regulating the pressure of compressed air in a vehicle

Abstract

The application discloses a kind of pressure adjustment method and device of compressed air in vehicle.The method comprises: in response to engine in the vehicle is in power-on state, obtain the first pressure information of pressure stabilizing device in the vehicle, in response to first pressure information is less than first pressure information threshold, to pressure stabilizing device is filled with gas operation;In response to first pressure information is greater than or equal to first pressure information threshold, control air pressure pump enters idle state;In response to air pressure pump successfully enters idle state, obtain the second pressure information of urea tank in the vehicle, based on second pressure information, determine the switch state of the air inlet valve and exhaust valve of urea tank, according to switch state, carry out air charging adjustment operation or exhaust adjustment operation to urea tank, obtain operation result;Or, using pressure regulating valve, adjust the third pressure information of compressed air output by pressure stabilizing device, obtain target pressure information.The application solves the technical problem that compressed air in vehicle cannot be effectively adjusted.

Description

Technical Field

[0001] This invention relates to the field of engine and aftertreatment technology, and more specifically, to a method and apparatus for adjusting the pressure of compressed air in a vehicle. Background Technology

[0002] Currently, in the fields of engine and aftertreatment system technology in vehicles, such as engine bench testing, there are stringent requirements for a stable pressurized gas source. These requirements cover multiple aspects, including engine boost pressure control, selective catalytic reduction (SCR) urea injection pressure control in the aftertreatment system, and gas supply control for testing equipment.

[0003] In related technologies, the provision of additional air sources in vehicles, the use of air tanks in vehicle urea injection systems directly connected to the air compressor in the vehicle's engine, and the independent configuration of air supply for testing equipment in vehicles all lead to increased testing costs, more complex piping layouts, higher energy consumption, and potential safety hazards. Therefore, the technical problem of effectively adjusting the output pressure of pressure stabilization equipment remains.

[0004] There is currently no effective solution to the aforementioned technical problems. Summary of the Invention

[0005] This invention provides a method and apparatus for adjusting the pressure of compressed air in a vehicle, thereby at least solving the technical problem of the inability to effectively adjust the pressure of compressed air in a vehicle.

[0006] According to one aspect of the present invention, a method for adjusting the pressure of compressed air in a vehicle is provided. The method may include: in response to the engine being powered on in the vehicle, acquiring first pressure information of a pressure regulating device in the vehicle; in response to the first pressure information being less than a first pressure information threshold, controlling a solenoid valve in the vehicle to be in a closed state; and controlling an air pump in the engine to perform a charging operation to the pressure regulating device, wherein the solenoid valve is connected between the pressure regulating device and the air pump in the engine, the charging operation indicates the charging of compressed air, and the first pressure information indicates the pressure magnitude inside the pressure regulating device; in response to the first pressure information being greater than or equal to the first pressure information threshold, changing the state of the solenoid valve from a closed state to an open state to control the air pump to enter an unloaded state, wherein in the unloaded state, the pressure regulating device stops receiving new compressed air; in response to the air pump… Once the pump successfully enters an unloaded state, it acquires the second pressure information of the urea tank in the vehicle. Based on this second pressure information, it determines the on / off status of the urea tank's intake valve and exhaust valve. Then, according to these on / off statuses, it performs either an inflation or deflation adjustment operation on the urea tank to obtain the operation result. The second pressure information represents the pressure level of the urea tank. Alternatively, in response to the air compressor successfully entering an unloaded state, it uses a pressure regulating valve to adjust the third pressure information of the compressed air output by the pressure stabilizing device to obtain the target pressure information. The third pressure information is directly proportional to the first pressure information, and the target pressure information represents the pressure requirement of different devices in the vehicle for the third pressure information.

[0007] Optionally, a pressure sensor is deployed in the urea tank to determine the on / off state of the intake valve and the exhaust valve of the urea tank based on the second pressure information. This includes: acquiring the second pressure information using the pressure sensor and sending the second pressure information to the engine; comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve.

[0008] Optionally, comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve includes: controlling the intake valve to be in an open state and the exhaust valve to be in a closed state in response to the second pressure information being less than the second pressure information threshold; controlling the intake valve to be in a closed state and the exhaust valve to be in a closed state in response to the second pressure information being equal to the second pressure information threshold; and controlling the intake valve to be in a closed state and the exhaust valve to be in an open state in response to the second pressure information being greater than the second pressure information threshold.

[0009] Optionally, the pressure regulating valve includes a first pressure regulating valve and a second pressure regulating valve, and the target pressure information includes first target pressure information and second target pressure information. In response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating valve is adjusted to obtain the target pressure information, including: in response to the air compressor successfully entering the no-load state, adjusting the third pressure information using the first pressure regulating valve to obtain first initial pressure information; adjusting the first initial pressure information to obtain first target pressure information, wherein the first target pressure information is used to indicate that the range of use allowed by the exhaust valve of the turbocharger in the vehicle is met.

[0010] Optionally, adjusting the first initial pressure information to obtain the first target pressure information includes: transmitting the first initial pressure information to the exhaust gas venting valve of the turbocharger; acquiring the engine's operating conditions; and adjusting the opening of the exhaust gas venting valve based on the operating conditions to obtain the first target pressure information.

[0011] Optionally, in response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating device is adjusted using a pressure regulating valve to obtain target pressure information, including: adjusting the third pressure information using a second pressure regulating valve to obtain second target pressure information, wherein the second target pressure information is used to indicate that it meets the range allowed by the vehicle bench test equipment.

[0012] According to another aspect of the present invention, a pressure adjustment device for compressed air in a vehicle is also provided. The device may include: a control unit, configured to, in response to the engine being powered on in the vehicle, acquire first pressure information of a pressure regulating device in the vehicle; in response to the first pressure information being less than a first pressure information threshold, control a solenoid valve in the vehicle to be in a closed state; and control an air pump in the engine to perform a charging operation to the pressure regulating device, wherein the solenoid valve is connected between the pressure regulating device and the air pump in the engine, the charging operation indicates the charging of compressed air, and the first pressure information indicates the pressure magnitude inside the pressure regulating device; a switching unit, configured to, in response to the first pressure information being greater than or equal to the first pressure information threshold, switch the state of the solenoid valve from a closed state to an open state to control the air pump to enter an unloaded state, wherein, in the unloaded state, the pressure regulating device stops receiving new compressed air; and adjustment... The unit is used to, in response to the air compressor successfully entering an unloaded state, acquire the second pressure information of the urea tank in the vehicle, determine the on / off state of the urea tank's intake valve and exhaust valve based on the second pressure information, and perform an inflation adjustment operation or an exhaust adjustment operation on the urea tank according to the on / off state of the intake valve and exhaust valve to obtain the operation result. The second pressure information is used to represent the pressure of the urea tank. Alternatively, in response to the air compressor successfully entering an unloaded state, the unit uses a pressure regulating valve to adjust the third pressure information of the compressed air output by the pressure stabilizing device to obtain target pressure information. The third pressure information is directly proportional to the first pressure information, and the target pressure information is used to represent the pressure requirements of different devices in the vehicle for the third pressure information.

[0013] According to another aspect of the present invention, a processor is also provided. The processor is used to run a program, wherein the program, when run by the processor, performs the methods described in the embodiments of the present invention.

[0014] According to another aspect of the present invention, an electronic device is also provided, comprising: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods of various embodiments of the present invention during runtime.

[0015] According to another aspect of the present invention, a computer-readable storage medium is also provided, the computer-readable storage medium including a stored executable program, wherein, when the executable program is executed, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0016] According to another aspect of the present invention, a computer program product is also provided, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0017] According to another aspect of the present invention, a computer program product is also provided, including a non-volatile computer-readable storage medium storing a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0018] According to another aspect of the present invention, a computer program is also provided, which, when executed by a processor, implements the methods of the various embodiments of the present invention.

[0019] According to another aspect of the present invention, a vehicle is also provided. The vehicle includes a memory and a processor. The memory stores an executable program; the processor runs the program, which, when executed, implements the methods described in the embodiments of the present invention.

[0020] In this embodiment of the invention, in response to the engine being powered on in the vehicle, first pressure information of the vehicle's pressure stabilizing device is acquired. When the first pressure information is detected to be less than a first pressure information threshold, the solenoid valve is controlled to close to establish a closed charging path. Simultaneously, the air compressor in the engine starts working, charging compressed air into the pressure stabilizing device until the first pressure information reaches the ideal level. If the first pressure information is greater than or equal to the first pressure information threshold, the solenoid valve is opened, allowing the air compressor to connect to the atmosphere and enter an unloaded state. This means that the air compressor no longer supplies air to the pressure stabilizing device, but directly discharges compressed air into the atmosphere, avoiding unnecessary energy consumption and contributing to engine energy saving and performance optimization. In response to the air compressor successfully entering the unloaded state, second pressure information of the urea tank in the vehicle can be acquired. Based on the second pressure information, the opening and closing states of the urea tank's intake and exhaust valves are adjusted to ensure that compressed air can be safely and effectively used for the conversion of nitrogen oxides during urea injection. The pressure regulating valve can adjust the third pressure information to the target pressure information according to the needs of different equipment (such as the vent valve of the turbocharger or the bench test equipment). This adjustment not only improves flexibility, but also reduces energy waste caused by pressure mismatch, thereby solving the technical problem of not being able to effectively adjust the pressure of compressed air in the vehicle and achieving the technical effect of effectively adjusting the pressure of compressed air in the vehicle. Attached Figure Description

[0021] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0022] Figure 1 This is a flowchart of a method for adjusting the pressure of compressed air in a vehicle according to an embodiment of the present invention;

[0023] Figure 2This is a schematic diagram illustrating the use and control strategy of a voltage stabilizing device according to an embodiment of the present invention;

[0024] Figure 3 This is a flowchart of the use and control method of a voltage stabilizing device according to an embodiment of the present invention;

[0025] Figure 4 This is a schematic diagram of a compressed air pressure adjustment device in a vehicle according to an embodiment of the present invention. Detailed Implementation

[0026] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0027] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, functional component, or device that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, functional components, or devices.

[0028] According to an embodiment of the present invention, an embodiment of a method for adjusting the pressure of compressed air in a vehicle is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases, the steps shown or described may be executed in a different order than that shown here.

[0029] Figure 1 This is a flowchart of a method for adjusting the pressure of compressed air in a vehicle according to an embodiment of the present invention, such as... Figure 1 As shown, the method may include the following steps.

[0030] In step S102, in response to the engine being powered on in the vehicle, the first pressure information of the voltage regulator in the vehicle is obtained; in response to the first pressure information being less than the first pressure information threshold, the solenoid valve in the vehicle is controlled to be closed, and the air pump in the engine is controlled to charge the voltage regulator.

[0031] In the technical solution provided by step S102 of the present invention, the solenoid valve can be connected between the pressure stabilizing device and the air pump (engine air pump) in the engine, the inflation operation can be used to indicate the inflation of compressed air, and the first pressure information can be used to indicate the pressure inside the pressure stabilizing device.

[0032] In this embodiment, when the engine in the vehicle is powered on, that is, the engine is ignited and starts running, the engine control unit or the corresponding control system in the vehicle can begin to acquire real-time pressure data (e.g., first pressure information) inside the voltage regulator. The first pressure information can be measured by a pressure sensor installed on the voltage regulator and sent to the control system.

[0033] Optionally, if the detected first pressure information is less than a preset first pressure information threshold (e.g., 12 bar), this indicates that the compressed air in the pressure regulator is insufficient to meet the needs of subsequent systems in the vehicle. The control system will respond immediately by sending a signal to the solenoid valve to close it, thereby sealing the connection path between the pressure regulator and the air compressor in the engine. When the solenoid valve is closed, it prevents the unnecessary loss of compressed air and ensures the efficiency of the inflation process.

[0034] Optionally, with the solenoid valve in the closed state, the engine's air pump (also known as an air compressor) starts working, compressing external air and delivering it through pipelines to the pressure stabilizing device, thereby increasing the pressure of the compressed air in the pressure stabilizing device until it reaches or exceeds a preset threshold.

[0035] In this embodiment of the invention, when the first pressure information is less than a first pressure information threshold, the solenoid valve in the vehicle is controlled to be in a closed state, and the air pump in the engine is controlled to charge the pressure stabilizing device. This ensures that the pressure of the compressed air in the pressure stabilizing device can be rapidly increased to a level that meets the system requirements of the vehicle during the initial stage of engine startup. This not only ensures the normal operation of the vehicle, but also achieves effective load management of the air pump through intelligent control of the solenoid valve, avoiding energy waste during unnecessary high-pressure charging, thereby achieving the purpose of saving energy and improving system efficiency.

[0036] In step S104, in response to the first pressure information being greater than or equal to the first pressure information threshold, the state of the solenoid valve is changed from closed to open to control the air compressor to enter the no-load state.

[0037] In the technical solution provided by step S104 of the present invention, the voltage stabilizing device stops receiving new compressed air under no-load conditions.

[0038] In this embodiment, after the first pressure information of the vehicle's pressure stabilizing device is obtained in response to the engine being powered on, and the solenoid valve in the vehicle is controlled to be closed in response to the first pressure information being less than the first pressure information threshold, and the air pump in the engine is controlled to charge the pressure stabilizing device, the state of the solenoid valve can be changed from closed to open in response to the first pressure information being greater than or equal to the first pressure information threshold, so as to control the air pump to enter the no-load state.

[0039] Optionally, when the first pressure information is greater than or equal to a first pressure information threshold (e.g., 12 bar), it means that the compressed air in the pressure stabilizing device is sufficient to meet the needs of the vehicle's aftertreatment system, turbocharger bleed valve, and testing equipment. The control system can immediately change the operating state of the solenoid valve from its original closed state (preventing the air pump from charging the pressure stabilizing device) to the open state. At this time, the solenoid valve is activated as a "pressure relief valve," which can direct the compressed air from the air pump outlet directly to the atmosphere instead of continuing to charge the pressure stabilizing device.

[0040] Optionally, with the solenoid valve open, the air pump no longer bears the load of supplying compressed air to the pressure stabilizing equipment, but continues to operate under lower resistance, i.e., enters an unloaded state. In the unloaded state, although the air pump is still running, since the compressed air is directly discharged into the atmosphere, it will not cause additional pressure to the pressure stabilizing equipment.

[0041] In this embodiment of the invention, once the pressure of the pressure stabilizing device reaches a sufficient level, for example, if the first pressure information is greater than or equal to a first pressure information threshold, the opening and closing of the solenoid valve can be intelligently controlled. This avoids the air compressor wasting energy during unnecessary high-pressure charging, reduces the engine load, and helps improve fuel efficiency and extend the service life of the air compressor. Furthermore, it ensures that the compressed air pressure remains stable within a safe and effective range, avoiding safety hazards caused by overpressure, and also provides a stable pressure source for subsequent systems (such as the urea injection system, turbocharger vent valve control, and air supply for testing equipment).

[0042] Step S106: In response to the air compressor successfully entering the no-load state, the second pressure information of the urea tank in the vehicle is obtained. Based on the second pressure information, the on / off state of the urea tank's intake valve and exhaust valve is determined. According to the on / off state of the intake valve and exhaust valve, the urea tank is subjected to an inflation adjustment operation or an exhaust adjustment operation to obtain the operation result. Alternatively, in response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating valve is adjusted to obtain the target pressure information.

[0043] In the technical solution provided by step S106 of the present invention, the second pressure information can be used to represent the pressure of the urea tank, the third pressure information can be directly proportional to the first pressure information, and the target pressure information can be used to represent the pressure requirements of different equipment in the vehicle for the third pressure information.

[0044] In this embodiment, after the air compressor enters the no-load state, the pressure of the urea tank can be intelligently adjusted according to the pressure requirements of different equipment (e.g., the second pressure information), and the pressure of the compressed air output by the pressure regulating device can be finely adjusted using the pressure regulating valve (e.g., the third pressure information) to meet the specific usage requirements of different equipment in the vehicle, thereby ensuring the appropriate distribution of compressed air and improving the overall system efficiency and reliability.

[0045] Optionally, when the air compressor enters an unloaded state, the control system can immediately detect the real-time pressure value inside the urea tank (corresponding to the second pressure information). This is to ensure that the urea tank pressure meets the requirements of the selective catalytic reduction (SCR) system's urea injection operation. Based on a comparison between the current pressure value of the urea tank (e.g., the second pressure information) and a second pressure information threshold (e.g., 8 bar), the control system can determine the opening and closing states of the urea tank's intake and exhaust valves. For example, if the urea tank pressure is lower than the second pressure information threshold, the intake valve will open, allowing compressed air to enter the urea tank; if the urea tank pressure is higher than the second pressure information threshold, the exhaust valve will open to release excess pressure; and when the urea tank pressure is at the second pressure information threshold, both the intake and exhaust valves remain closed to maintain pressure stability. Adjusting the compressed air supply to the urea tank based on these decisions to achieve the ideal working pressure is a dynamic and continuous process that ensures the urea tank maintains stable pressure under various operating conditions, thereby guaranteeing urea injection efficiency and the normal operation of the SCR system.

[0046] Optionally, in certain applications, such as the control of turbocharger vent valves and the use of air in testing equipment, it is necessary to adjust the pressure of the compressed air provided by the pressure stabilizing equipment to the allowable operating range of the specific equipment. In this case, a pressure regulating valve can be used to adjust the pressure of the compressed air output by the pressure stabilizing equipment (i.e., the third pressure information). The intervention of the pressure regulating valve can precisely adjust the compressed air pressure to the target pressure information, which can be set according to the specific needs of different equipment, such as the higher pressure required by the turbocharger vent valve or the lower pressure required by the testing equipment. In this way, customized compressed air pressure can be provided, optimizing the application effect of compressed air pressure in vehicles.

[0047] In this embodiment of the invention, the above steps not only achieve precise control of the urea tank pressure (e.g., second pressure information), ensuring the urea injection system operates under optimal conditions, but also provide suitable pressure for the turbocharger vent valve and testing equipment through the use of a pressure regulating valve, meeting the different compressed air requirements of these devices. This method not only improves energy utilization efficiency and reduces unnecessary energy waste, but also enhances the vehicle's adaptability and stability under different operating conditions through intelligent management.

[0048] In steps S102 to S106 of this invention, in response to the engine being powered on in the vehicle, the first pressure information of the vehicle's pressure stabilizing device is acquired. When the first pressure information is detected to be less than a first pressure information threshold, the solenoid valve is controlled to close to establish a closed charging path. Simultaneously, the air compressor in the engine starts working, charging compressed air into the pressure stabilizing device until the first pressure information reaches the ideal level. If the first pressure information is greater than or equal to the first pressure information threshold, the solenoid valve is opened, allowing the air compressor to connect to the atmosphere and enter an unloaded state. This means that the air compressor no longer supplies air to the pressure stabilizing device, but directly discharges compressed air into the atmosphere, avoiding unnecessary energy consumption and contributing to engine energy saving and performance optimization. In response to the air compressor successfully entering the unloaded state, the second pressure information of the urea tank in the vehicle can be acquired. Based on the second pressure information, the opening and closing states of the urea tank's intake and exhaust valves are adjusted to ensure that compressed air can be safely and effectively used for the conversion of nitrogen oxides during urea injection. The pressure regulating valve can adjust the third pressure information to the target pressure information according to the needs of different equipment (such as the vent valve of the turbocharger or the bench test equipment). This adjustment not only improves flexibility, but also reduces energy waste caused by pressure mismatch, thereby solving the technical problem of not being able to effectively adjust the pressure of compressed air in the vehicle and achieving the technical effect of effectively adjusting the pressure of compressed air in the vehicle.

[0049] The method described in this embodiment will be further described below.

[0050] As an optional embodiment, a pressure sensor is deployed in the urea tank. Step S106, based on the second pressure information, determines the on / off state of the urea tank's intake valve and exhaust valve, including: acquiring the second pressure information using the pressure sensor and sending the second pressure information to the engine; comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and exhaust valve.

[0051] In this embodiment, a pressure sensor can be installed inside the urea tank to monitor the pressure level of the compressed air inside the tank in real time (i.e., the second pressure information), ensuring that the control system can obtain the real-time pressure data of the urea tank in a timely manner.

[0052] Optionally, if the air compressor successfully enters an unloaded state, it means that the pressure stabilizing device has reached sufficient pressure. At this point, the pressure sensor starts working, measuring the real-time pressure value inside the urea tank (corresponding to the second pressure information). The pressure sensor can then transmit the measured second pressure information to the vehicle's electronic control unit (ECU) in real time via the vehicle network or a dedicated line. The ECU is the brain of the entire control system, used to receive, analyze, and process data from various sensors, and then make corresponding control decisions based on this data.

[0053] Optionally, after receiving the second pressure information, the electronic control unit can compare the second pressure information with a preset second pressure information threshold (e.g., 8 bar). Through this comparison, the electronic control unit can determine whether the current pressure of the urea tank meets the pressure requirements of the urea injection system. Based on the comparison result, the electronic control unit can determine the on / off state of the urea tank's intake and exhaust valves.

[0054] In this embodiment, the intelligent control strategy based on real-time pressure feedback ensures that the urea tank maintains a suitable working pressure range at all times, improving urea injection efficiency and avoiding system failure risks caused by excessive or insufficient pressure. Simultaneously, intelligent management by the electronic control unit enables precise distribution of compressed air, reducing energy waste and improving the overall vehicle system's operating efficiency and economy.

[0055] As an optional embodiment, comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve includes: in response to the second pressure information being less than the second pressure information threshold, controlling the intake valve to be in an open state and the exhaust valve to be in a closed state; in response to the second pressure information being equal to the second pressure information threshold, controlling the intake valve to be in a closed state and the exhaust valve to be in a closed state; in response to the second pressure information being greater than the second pressure information threshold, controlling the intake valve to be in a closed state and the exhaust valve to be in an open state.

[0056] In this embodiment, the pressure control strategy for the urea tank can be further refined to ensure that the internal pressure of the urea tank (corresponding to the second pressure information) can be accurately maintained within the target range.

[0057] Optionally, when the pressure inside the urea tank (corresponding to the second pressure information) is less than the second pressure information threshold (e.g., 8 bar), the control system can assume that the urea tank needs more compressed air to reach the working pressure requirement. Therefore, the electronic control unit can send a command to control the intake valve to be in the open state, allowing compressed air from the pressure stabilizing device to continuously flow into the urea tank, while the exhaust valve is in the closed state to prevent the existing compressed air in the urea tank from being lost, thereby quickly increasing the pressure of the urea tank.

[0058] Optionally, if the pressure in the urea tank reaches the target threshold, that is, the second pressure information equals the second pressure information threshold, it indicates that the internal pressure of the urea tank meets the requirements of the urea injection system. At this time, the control system can set the on / off state of both the intake valve and the exhaust valve to the closed state, forming a closed system. This maintains the stability of the internal pressure of the urea tank and avoids unnecessary waste of compressed air, ensuring the energy utilization efficiency of the system.

[0059] Optionally, if the pressure in the urea tank exceeds the target threshold, i.e., the second pressure information is greater than the second pressure information threshold, this can cause unnecessary pressure and potential safety risks to the urea tank and the entire SCR system. Therefore, the control system can immediately adjust the intake valve to the closed state to prevent more compressed air from entering the urea tank, and set the exhaust valve to the open state to allow excess compressed air in the urea tank to be released until the pressure in the urea tank drops to a safe range.

[0060] In this embodiment, precise control of the urea tank pressure is achieved by real-time monitoring of the urea tank pressure (corresponding to the second pressure information) and dynamically adjusting the opening and closing states of the intake and exhaust valves based on the comparison between the pressure and the target threshold (corresponding to the second pressure information threshold). This not only ensures that the urea injection system operates at optimal pressure, thereby improving the nitrogen oxide conversion efficiency, but also enhances the system's safety and stability by avoiding overpressure. Furthermore, by reducing unnecessary compressed air consumption, it also has a positive impact on reducing overall vehicle operating costs and improving energy efficiency.

[0061] As an optional embodiment, the pressure regulating valve includes a first pressure regulating valve and a second pressure regulating valve, and the target pressure information includes first target pressure information and second target pressure information. In step S106, in response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating valve is adjusted to obtain the target pressure information. This includes: in response to the air compressor successfully entering the no-load state, adjusting the third pressure information using the first pressure regulating valve to obtain first initial pressure information; and adjusting the first initial pressure information to obtain first target pressure information, wherein the first target pressure information is used to indicate the range that is allowed to be used by the exhaust valve of the turbocharger in the vehicle.

[0062] In this embodiment, in response to the air compressor successfully entering an unloaded state, the third pressure information of the compressed air output by the pressure regulating device is adjusted using a pressure regulating valve to obtain target pressure information. In response to the air compressor successfully entering an unloaded state, the third pressure information is adjusted using a first pressure regulating valve to obtain first initial pressure information. Subsequently, the first initial pressure information can be adjusted to obtain first target pressure information. The first target pressure information can be used to indicate the range that meets the allowable use of the turbocharger's bleed valve (turbocharger bleed valve) in the vehicle.

[0063] Optionally, when the air compressor successfully enters the no-load state through the intelligent control of the solenoid valve, it means that sufficient compressed air has been filled into the pressure stabilizing device. At this time, the first pressure regulating valve (e.g., pressure regulating valve 1) begins to function, making an initial adjustment to the pressure of the compressed air output by the pressure stabilizing device (corresponding to the third pressure information). The first pressure regulating valve can reduce the high-pressure air in the pressure stabilizing device to an intermediate pressure level, i.e., the first initial pressure information. The first initial pressure information is higher than the final target pressure information, but lower than the original high pressure of the pressure stabilizing device (corresponding to the first pressure information), thus laying the foundation for subsequent more precise pressure adjustments.

[0064] Optionally, based on the engine's current operating conditions and the specific requirements of the turbocharger's blowout valve, the control system can use the first pressure regulating valve to more precisely adjust the initial pressure information, ensuring that the pressure of the output compressed air meets the optimal operating conditions of the turbocharger's blowout valve. Through fine adjustment of the first pressure regulating valve, the final output compressed air pressure reaches a specific value within the allowable operating range of the turbocharger's blowout valve, i.e., the first target pressure information. The first target pressure information is derived from engine operating conditions and turbocharger performance optimization calculations, ensuring that the turbocharger can provide appropriate boost pressure under different operating conditions, thereby optimizing engine combustion efficiency and power output, while reducing fuel consumption and emissions.

[0065] In this embodiment of the invention, by using two pressure regulating valves, the pressure of the compressed air output from the pressure stabilizing device is graded and precisely controlled, ensuring that critical systems and equipment in the vehicle can operate at appropriate working pressures, thereby improving the overall performance and reliability of the system. Furthermore, by reducing unnecessary high-pressure operation, the service life of the equipment can be extended, and maintenance costs reduced.

[0066] As an optional embodiment, adjusting the first initial pressure information to obtain the first target pressure information includes: transmitting the first initial pressure information to the exhaust gas venting valve of the turbocharger; acquiring the engine's operating conditions; and adjusting the opening of the exhaust gas venting valve based on the operating conditions to obtain the first target pressure information.

[0067] In this embodiment, during the process of adjusting the first initial pressure information to obtain the first target pressure information, the first initial pressure information can be transmitted to the exhaust gas venting valve of the turbocharger; the engine operating conditions can be obtained, and based on the operating conditions, the opening of the exhaust gas venting valve can be adjusted to obtain the first target pressure information.

[0068] Optionally, the compressed air in the pressure stabilizing device undergoes preliminary pressure adjustment via the first pressure regulating valve, which can then send initial pressure information (corresponding to the adjusted compressed air pressure) to the exhaust gas release valve in the booster. This initial pressure information is obtained by reducing the pressure based on the actual pressure value in the pressure stabilizing device, thus adapting to the operating range of the exhaust gas release valve.

[0069] Optionally, the electronic control unit (ECU) can monitor and analyze the engine's operating status in real time, including but not limited to parameters such as engine speed, load, intake air temperature, and fuel injection quantity, to determine the current engine operating conditions and the required boost pressure. Based on the acquired engine operating conditions, the ECU can calculate the ideal boost pressure value (corresponding to the first target pressure information). Then, by controlling the opening of the exhaust gas vent valve, it precisely adjusts the pressure on the exhaust side of the turbocharger, thereby affecting the turbocharger turbine speed and the turbocharger's boost effect, ultimately achieving the output of the first target pressure information.

[0070] Optionally, when the engine load increases, the opening of the exhaust gas vent valve decreases to increase the boost pressure; conversely, when the engine load decreases, the opening of the exhaust gas vent valve increases to reduce the boost pressure, thereby optimizing combustion and reducing emissions.

[0071] In the embodiments of this application, the aforementioned dynamic pressure adjustment strategy based on engine operating conditions enables the turbocharger to provide appropriate boost pressure under different load conditions, thereby improving the engine's fuel efficiency, power performance, and emission levels. Precise control of the exhaust gas valve not only avoids energy waste and increased mechanical load caused by excessive boost pressure but also reduces unnecessary boost pressure under low load conditions, ensuring efficient and stable engine operation under various operating conditions.

[0072] As an optional embodiment, step S106, in response to the air compressor successfully entering the no-load state, uses a pressure regulating valve to adjust the third pressure information of the compressed air output by the pressure regulating device to obtain target pressure information, including: using a second pressure regulating valve to adjust the third pressure information to obtain second target pressure information, wherein the second target pressure information is used to indicate that it meets the range allowed by the vehicle bench test equipment.

[0073] In this embodiment, in response to the air compressor successfully entering an unloaded state, the third pressure information of the compressed air output by the pressure regulating device is adjusted using a pressure regulating valve to obtain the target pressure information. A second pressure regulating valve (pressure regulating valve 2) can also be used to adjust the third pressure information to obtain the second target pressure information. This second target pressure information can be used to indicate that it meets the allowable range for use by the bench testing equipment in the vehicle. The bench testing equipment can be a dynamic smoke meter, particle counter, particle analyzer, etc., which are only examples and are not specifically limited here.

[0074] Optionally, when the air compressor successfully enters the no-load state, it means that the compressed air in the pressure stabilizing device is greater than or equal to the first pressure information threshold (e.g., 12 bar). At this time, the pressure of the compressed air output by the pressure stabilizing device (corresponding to the third pressure information) can be adjusted by the second pressure regulating valve to meet the usage requirements of the bench test equipment.

[0075] Optionally, based on the design and operating principles of bench testing equipment, each type of equipment has its permissible pressure range. For example, the operating pressure of most bench testing equipment can be set to around 6 bar. Through a second pressure regulating valve, the control system can reduce the third pressure information from the high pressure level of the pressure stabilizing equipment to a more suitable level (e.g., 6 bar), thus obtaining the second target pressure information. This second target pressure information not only meets the normal operating requirements of the equipment but also ensures its safety and reliability, avoiding equipment damage or inaccurate test results due to excessive pressure.

[0076] Optionally, through the above steps, the bench testing equipment can achieve stable and precise pressure control, meeting the specific pressure requirements of compressed air during operations such as zero-point calibration, exhaust dilution, and test pipeline backflushing. This intelligent pressure control not only improves the efficiency of the testing equipment but also reduces testing costs and enhances the accuracy and reliability of test data.

[0077] In this embodiment of the invention, in response to the engine being powered on in the vehicle, first pressure information of the vehicle's pressure stabilizing device is acquired. When the first pressure information is detected to be less than a first pressure information threshold, the solenoid valve is controlled to close to establish a closed charging path. Simultaneously, the air compressor in the engine starts working, charging compressed air into the pressure stabilizing device until the first pressure information reaches the ideal level. If the first pressure information is greater than or equal to the first pressure information threshold, the solenoid valve is opened, allowing the air compressor to connect to the atmosphere and enter an unloaded state. This means that the air compressor no longer supplies air to the pressure stabilizing device, but directly discharges compressed air into the atmosphere, avoiding unnecessary energy consumption and contributing to engine energy saving and performance optimization. In response to the air compressor successfully entering the unloaded state, second pressure information of the urea tank in the vehicle can be acquired. Based on the second pressure information, the opening and closing states of the urea tank's intake and exhaust valves are adjusted to ensure that compressed air can be safely and effectively used for the conversion of nitrogen oxides during urea injection. The pressure regulating valve can adjust the third pressure information to the target pressure information according to the needs of different equipment (such as the vent valve of the turbocharger or the bench test equipment). This adjustment not only improves flexibility, but also reduces energy waste caused by pressure mismatch, thereby solving the technical problem of not being able to effectively adjust the pressure of compressed air in the vehicle and achieving the technical effect of effectively adjusting the pressure of compressed air in the vehicle.

[0078] The technical solutions of the embodiments of the present invention will be illustrated below with reference to preferred embodiments.

[0079] Currently, in engine bench testing, a stable pressure air source is required for engine boost pressure control, urea injection in the selective catalytic reduction (SCR) aftertreatment system, and air supply for test equipment. In bench testing, boost pressure control and test equipment backflushing are supplied with additional air by the bench itself. The urea injection system uses an air tank connected to the engine air compressor. When the engine starts, the air compressor continuously charges the air tank, ultimately supplying air to the urea tank to achieve the required urea injection pressure.

[0080] However, in existing technologies, an additional air source is provided to control the blow-off valve of the turbocharger and the bench testing equipment, leading to increased testing costs and relatively complex piping layouts. Furthermore, the air tank required for urea injection, being connected to the air compressor, is constantly under high pressure, posing a safety hazard, and the air compressor being constantly under load is detrimental to engine fuel consumption. Therefore, the technical problem of effectively adjusting the pressure of compressed air in the vehicle remains.

[0081] To address the aforementioned problems, this invention proposes a range of applications for a pressure stabilizing device and a pressure control method thereof. An engine air compressor is connected to the pressure stabilizing device via a solenoid valve. When the engine starts, the air compressor begins operation, filling the pressure stabilizing device with air. When the pressure stabilizing device detects that it has reached a set pressure value, the engine control module controls the opening and closing of the solenoid valve. After the pressure in the pressure stabilizing device stabilizes, the compressed air from the device can be supplied to three areas: the urea tank, the turbocharger vent valve, and the bench testing equipment.

[0082] Figure 2 This is a schematic diagram illustrating the use and control strategy of a voltage regulator according to an embodiment of the present invention, as shown below. Figure 2 As shown, it includes: a pressure stabilizing device 201, an engine air compressor 202, a solenoid valve 203, an oil filter 204, a dryer 205, a pressure sensor 206, an intake / exhaust valve 207, a urea tank 208, a urea pressure sensor 209, an engine control module 210, a first pressure regulating valve 211, a turbocharger vent valve 212, a second pressure regulating valve 213, and a bench test device 214.

[0083] The pressure regulator 201 is the core component of the entire system. It can be used to store compressed air and maintain the pressure of compressed air within a stable range. The pressure regulator 201 is connected to the engine air compressor 202 through the solenoid valve 203.

[0084] The engine air compressor 202 is used to generate compressed air, providing power for the air compression process. When the engine is running, the air compressor compresses the air to a high pressure and then supplies it to the pressure regulating device.

[0085] Solenoid valve 203 can act as a gate between the pressure stabilizing equipment and the air compressor. When the pressure in the pressure stabilizing equipment is lower than the set value, the solenoid valve closes, allowing compressed air to flow into the pressure stabilizing equipment; when the pressure reaches or exceeds the set value, the solenoid valve opens, releasing the load on the air compressor and allowing it to enter an unloaded state, directly discharging the compressed air to the atmosphere to avoid energy waste.

[0086] Oil filter 204 can be used to filter oil mist droplets carried in compressed air, ensuring compressed air quality and preventing contamination of downstream systems.

[0087] Dryer 205 can be used to remove moisture from compressed air to prevent water from freezing at low temperatures, which could cause pipe blockage or equipment damage.

[0088] Pressure sensor 206 can be used to monitor the pressure of compressed air in the pressure stabilizing device and provide real-time feedback to the engine control module to determine whether the preset pressure threshold has been reached.

[0089] The intake / exhaust valve 207 can be used to control the direction and flow rate of compressed air entering and exiting the urea tank, ensuring that the pressure inside the urea tank remains stable within a suitable range.

[0090] Urea tank 208 can be used to store urea solution for the reduction reaction of nitrogen oxides in the SCR system. The pressure of the urea tank needs to be regulated by the inlet / outlet valve (inlet valve or exhaust valve).

[0091] The urea pressure sensor 209 can be used to monitor the pressure inside the urea tank, ensuring that the pressure inside the urea tank is within a safe and effective pressure range, and avoiding excessively high or low pressure from affecting the urea injection effect.

[0092] The engine control module 210 can receive data from various sensors, perform logical judgments, control the actions of solenoid valves and intake / exhaust valves, and coordinate the operation of the entire system.

[0093] The first pressure regulating valve 211, also known as the pressure regulating valve 1, can be located between the pressure stabilizing equipment and the booster vent valve. It is used to adjust the pressure of the compressed air in the pressure stabilizing equipment to the range allowed by the booster vent valve, so as to achieve precise control of the boost pressure.

[0094] The turbocharger wastegate 212 is used to regulate engine intake pressure and optimize combustion efficiency. By adjusting the opening of the wastegate, the turbocharger boost pressure can be controlled, thereby affecting engine performance.

[0095] The second pressure regulating valve 213, also known as the pressure regulating valve 2, can be located between the pressure stabilizing equipment and the bench test equipment. It is used to adjust the pressure of compressed air to meet the pressure requirements of the bench test equipment (such as dynamic smoke meter, particle counter, etc.) and ensure the accuracy of the test.

[0096] Bench testing equipment 214 can be used to evaluate engine performance, including but not limited to emissions testing and performance testing. Bench testing equipment 214 requires compressed air at a stable pressure for calibration, operation, and cleaning.

[0097] In this embodiment of the invention, the engine air compressor is connected to a pressure stabilizing device via a solenoid valve. When the engine starts, the air compressor begins to work, filling the pressure stabilizing device with air. When the pressure stabilizing device detects that it has reached the set pressure value, the engine control module can control the on / off state of the solenoid valve. This prevents overpressure in the pressure stabilizing device from causing safety hazards, and disconnecting the air compressor and the pressure stabilizing device reduces pumping losses, achieving fuel savings. After the pressure in the pressure stabilizing device stabilizes, the compressed air from the pressure stabilizing device can be supplied to the following three applications.

[0098] (1) The pressure stabilizing equipment supplies compressed air to the urea tank. The pressure sensor module feeds back the pressure of the urea tank to the engine control module. If the set pressure is reached, the engine control module controls the intake and exhaust valves to close. If the set pressure is not reached or exceeds the set pressure, the intake and exhaust valves will perform corresponding actions under the control of the control module.

[0099] (2) Compressed air from the pressure stabilizing equipment is supplied to the booster vent valve. After the compressed air from the pressure stabilizing equipment is reduced in pressure by the pressure regulating valve 1 and reaches a suitable pressure range, it is connected to the booster vent valve to control the boost pressure. During bench testing, no additional external compressed air source is required, reducing test costs.

[0100] (3) Supply of compressed air to bench testing equipment via pressure stabilization equipment. Bench testing equipment includes, for example, dynamic smoke meters, particle counters, and particle analyzers. Equipment calibration requires compressed air (calibration air); the working process requires compressed air to dilute engine exhaust gas (working air); and after each test, compressed air is needed to backflush the equipment to ensure the cleanliness of the test pipeline (backflushing air). By adjusting the air source in the pressure stabilization equipment to the required pressure range via pressure regulating valve 2, the air can be supplied to the bench testing equipment, reducing testing costs.

[0101] Figure 3 This is a flowchart illustrating the use and control method of a voltage regulator according to an embodiment of the present invention, such as... Figure 3 As shown, the method may include the following steps.

[0102] Step S301: Start the engine.

[0103] In this embodiment, the air compressor starts working after the engine is started.

[0104] Step S302: Connect the air pump and the voltage regulator.

[0105] In this embodiment, the engine air compressor and the pressure regulator are connected via a solenoid valve. After the engine starts, the air compressor begins to operate and charges the pressure regulator with air.

[0106] Step S303: The solenoid valve is closed.

[0107] In this embodiment, when the pressure P of the pressure stabilizing device is less than 12 bar, that is, when the first pressure information is less than the first pressure information threshold, the engine control unit controls the solenoid valve to close, and the air pump continuously charges the pressure stabilizing device.

[0108] Step S304: The pressure P of the pressure stabilizing device is ≥12 bar.

[0109] In this embodiment, if the pressure P of the stabilizing device is greater than or equal to 12 bar, that is, the first pressure information is greater than or equal to the first pressure information threshold, then after executing steps S305 and S306, steps S307, S310, or S312 can be executed.

[0110] Step S305: The solenoid valve is opened.

[0111] In this embodiment, when the pressure P of the pressure stabilizing device is ≥12 bar, the engine control unit controls the solenoid valve to open.

[0112] Step S306: The air pump is in an unloaded state.

[0113] In this embodiment, when the pressure P of the pressure stabilizing device is ≥12 bar, the engine control unit controls the solenoid valve to open. At this time, the pipeline is connected to the atmosphere, the air compressor is unloaded, which is advantageous for engine fuel consumption. Once the air pressure of the pressure stabilizing device reaches the rated pressure, it can be supplied to the aftertreatment urea tank, the turbocharger vent valve, and the testing equipment.

[0114] Step S307, urea tank pressure P1 = 8 bar.

[0115] In this embodiment, when the pressure of the pressure stabilizing device P ≥ 12 bar and the pressure of the urea tank P1 = 8 bar (that is, the second pressure information is equal to the second pressure information threshold), step S308 is executed; otherwise, step S309 is executed.

[0116] Step S308: Close the intake / exhaust valve.

[0117] In this embodiment, the inlet / outlet valve is closed when the urea tank pressure P1 = 8 bar.

[0118] Step S309: Open the intake / exhaust valve.

[0119] In this embodiment, when the urea tank pressure is less than 8 bar, that is, when the second pressure information is less than the second pressure information threshold, the intake valve is controlled to be in the open state, and the exhaust valve is controlled to be in the closed state. When the urea tank pressure is greater than 8 bar, that is, when the second pressure information is greater than the second pressure information threshold, the intake valve is controlled to be in the closed state, and the exhaust valve is controlled to be in the open state.

[0120] Step S310, using pressure regulating valve 2.

[0121] In this embodiment, when the pressure P of the pressure stabilizing device is greater than or equal to 12 bar, the pressure regulating valve 2 (the second pressure regulating valve) can be used to supply compressed air to the bench test equipment.

[0122] Step S311: Control the pressure to reach the allowable pressure range of the bench test equipment.

[0123] In this embodiment, the pressure can be controlled using the pressure regulating valve 2 to achieve the pressure range allowed by the bench test equipment.

[0124] Step S312, using pressure regulating valve 1.

[0125] In this embodiment, when the pressure P of the pressure stabilizing device is greater than or equal to 12 bar, the pressure regulating valve 1 (first pressure regulating valve) can be used to supply compressed air to the vent valve of the booster for use.

[0126] Step S313: Control the pressure to reach the pressure range allowed by the pressure relief valve of the booster.

[0127] In this embodiment, the pressure can be controlled using the pressure regulating valve 1 to reach the pressure range allowed by the booster vent valve.

[0128] In this embodiment of the invention, firstly, compressed air is supplied to the aftertreatment selective catalytic reduction (SCR) system for urea injection. When the urea tank pressure P1 < 8 bar, the intake valve opens, the exhaust valve closes, and the pressure stabilizing device charges the urea tank; when the urea tank pressure P1 = 8 bar, the intake valve closes, and the exhaust valve also closes, at which point the urea injection pressure requirement is met; when the urea pipe pressure P1 > 8 bar, the intake valve closes, and the exhaust valve opens to prevent excessive urea tank pressure from causing safety issues. The intake and exhaust valves operate by the urea tank pressure sensor feeding back the pressure to the engine control unit, which then determines the pressure value and its calibration value, thereby controlling the intake and exhaust valves to perform corresponding actions.

[0129] Secondly, compressed air is supplied to the turbocharger's exhaust valve to control the engine's intake pressure. The compressed air from the pressure stabilizing device passes through pressure regulating valve 1, which adjusts the pressure to the range allowed by the turbocharger's exhaust valve. Finally, it connects to the turbocharger's exhaust valve. By adjusting the opening of the exhaust valve, the required boost pressure under different operating conditions can be obtained, thereby affecting combustion and achieving multiple controls on engine power, fuel consumption, and emissions.

[0130] Finally, compressed air is supplied to the bench testing equipment. Bench testing equipment, such as dynamic smoke meters, particle counters, and particle analyzers, all require compressed air for its main purposes: zero-point calibration before use, diluting exhaust gas to a set concentration during use, and backflushing pipelines after equipment use. After exiting the pressure stabilizing device, the compressed air passes through pressure regulating valve 2, adjusting the pressure to approximately 6 bar before supplying it to these devices. This saves on testing costs and allows for independent control of the testing air supply, increasing test reliability.

[0131] Through the above method, the present invention can achieve the following beneficial effects: The pressure stabilizing device of the present invention is connected to the engine air compressor via a solenoid valve. After the engine control unit reads the pressure of the pressure stabilizing device, it controls the opening and closing of the solenoid valve, thereby enabling the switching between load and unloaded operation of the engine air compressor. After the pressure of the pressure stabilizing device reaches the set pressure, the solenoid valve opens, allowing the air compressor to communicate with the atmosphere, thus de-loading the air compressor and reducing engine fuel consumption. The compressed air of the pressure stabilizing device of the present invention can be supplied to multiple devices. In addition to supplying the engine body, including the air used in the aftertreatment urea injection system and the turbocharger vent valve, it can also supply bench testing equipment such as dynamic smoke meters, particle counters, and particle analyzers. This is achieved by controlling the pressure through a pressure regulating valve to reach the allowable pressure range of each device. The pressure output is stable, and the pressure range can be adjusted autonomously, increasing test reliability while reducing test costs.

[0132] According to an embodiment of the present invention, a pressure regulating device for compressed air in a vehicle is also provided. It should be noted that this pressure regulating device for compressed air in a vehicle can be used to perform the pressure regulating method for compressed air in a vehicle as described in the embodiments.

[0133] Figure 4 This is a schematic diagram of a compressed air pressure adjustment device in a vehicle according to an embodiment of the present invention. Figure 4 As shown, the compressed air pressure adjustment device 400 in the vehicle may include: a control unit 402, a conversion unit 404, and an adjustment unit 406.

[0134] The control unit 402 is configured to, in response to the engine being powered on in the vehicle, acquire first pressure information of the voltage regulator in the vehicle, and, in response to the first pressure information being less than a first pressure information threshold, control the solenoid valve in the vehicle to be closed, and control the air pump in the engine to perform an air charging operation to the voltage regulator. The solenoid valve is connected between the voltage regulator and the air pump in the engine, the air charging operation is used to indicate the charging of compressed air, and the first pressure information is used to indicate the pressure inside the voltage regulator.

[0135] The conversion unit 404 is used to change the state of the solenoid valve from closed to open in response to the first pressure information being greater than or equal to the first pressure information threshold, so as to control the air pump to enter the no-load state, wherein the pressure stabilizing device stops receiving new compressed air in the no-load state.

[0136] The adjustment unit 406 is used to, in response to the air compressor successfully entering an unloaded state, acquire the second pressure information of the urea tank in the vehicle, determine the on / off state of the urea tank's intake valve and exhaust valve based on the second pressure information, and perform an inflation adjustment operation or an exhaust adjustment operation on the urea tank according to the on / off state of the intake valve and exhaust valve to obtain the operation result. The second pressure information is used to represent the pressure of the urea tank. Alternatively, in response to the air compressor successfully entering an unloaded state, the third pressure information of the compressed air output by the pressure regulating valve is adjusted to obtain the target pressure information using the pressure regulating valve. The third pressure information is directly proportional to the first pressure information, and the target pressure information is used to represent the pressure requirements of different equipment in the vehicle for the third pressure information.

[0137] Optionally, a pressure sensor is deployed in the urea tank, and the adjustment unit 406 includes: an acquisition subunit for acquiring second pressure information using the pressure sensor and sending the second pressure information to the engine; and a comparison subunit for comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve.

[0138] Optionally, the comparison subunit includes: a first control subunit, configured to control the intake valve to be in an open state and the exhaust valve to be in a closed state in response to the second pressure information being less than the second pressure information threshold; a second control subunit, configured to control the intake valve to be in a closed state and the exhaust valve to be in a closed state in response to the second pressure information being equal to the second pressure information threshold; and a third control subunit, configured to control the intake valve to be in a closed state and the exhaust valve to be in an open state in response to the second pressure information being greater than the second pressure information threshold.

[0139] Optionally, the pressure regulating valve includes a first pressure regulating valve and a second pressure regulating valve, the target pressure information includes a first target pressure information and a second target pressure information, and the adjustment unit 406 includes: a first adjustment subunit, used to adjust the third pressure information using the first pressure regulating valve in response to the air compressor successfully entering the no-load state, to obtain a first initial pressure information; and a second adjustment subunit, used to adjust the first initial pressure information to obtain a first target pressure information, wherein the first target pressure information is used to indicate that the range of use of the exhaust valve of the turbocharger in the vehicle is satisfied.

[0140] Optionally, the second adjustment subunit includes: a transmission subunit for transmitting the first initial pressure information to the exhaust gas venting valve of the turbocharger; and a third adjustment subunit for acquiring the engine's operating conditions and adjusting the opening of the exhaust gas venting valve based on the operating conditions to obtain the first target pressure information.

[0141] Optionally, the adjustment unit 406 includes: a fourth adjustment subunit, used to adjust the third pressure information using the second pressure regulating valve to obtain second target pressure information, wherein the second target pressure information is used to indicate the range that meets the allowable use of the vehicle bench test equipment.

[0142] In this embodiment, the control unit 402, in response to the engine being powered on in the vehicle, acquires the first pressure information of the pressure stabilizing device in the vehicle. If the first pressure information is less than a first pressure information threshold, it controls the solenoid valve in the vehicle to be closed and controls the air pump in the engine to charge the pressure stabilizing device. The solenoid valve is connected between the pressure stabilizing device and the air pump; the charging operation indicates the introduction of compressed air; and the first pressure information indicates the internal pressure of the pressure stabilizing device. The conversion unit 404, in response to the first pressure information being greater than or equal to the first pressure information threshold, changes the state of the solenoid valve from closed to open to control the air pump to enter an unloaded state. In the unloaded state, the pressure stabilizing device stops receiving new compressed air. The adjustment unit 406, in response to the air pump successfully entering the unloaded state, acquires the urea in the vehicle. The second pressure information of the urea tank is used to determine the on / off state of the urea tank's air intake valve and exhaust valve. Based on these on / off states, the urea tank is adjusted for either inflation or deflation, resulting in an operational outcome. The second pressure information represents the pressure level of the urea tank. Alternatively, in response to the air compressor successfully entering an unloaded state, the third pressure information of the compressed air output from the pressure stabilizing device is adjusted using a pressure regulating valve to obtain target pressure information. The third pressure information is directly proportional to the first pressure information. The target pressure information represents the pressure requirement of different devices in the vehicle for the third pressure information, thus solving the technical problem of ineffective compressed air pressure adjustment in vehicles and achieving the technical effect of effective compressed air pressure adjustment in vehicles.

[0143] Embodiments of this application also provide an electronic device, including: a memory storing an executable program; and a processor for running the program, wherein the program executes the methods in various embodiments of the present invention during runtime.

[0144] Embodiments of this application also provide a computer-readable storage medium including a stored executable program, wherein, when the executable program is running, it controls the device where the computer-readable storage medium is located to perform the methods of various embodiments of the present invention.

[0145] Embodiments of this application also provide a computer program product, including a computer program that, when executed by a processor, implements the methods of various embodiments of the present invention.

[0146] Embodiments of this application also provide a computer program product, including a non-volatile computer-readable storage medium for storing a computer program that, when executed by a processor, implements the methods in various embodiments of the present invention.

[0147] Embodiments of this application also provide a computer program that, when executed by a processor, implements the methods described in the various embodiments of the present invention.

[0148] According to another aspect of the present invention, a vehicle is also provided. The vehicle includes a memory and a processor. The memory stores an executable program; the processor runs the program, which, when executed, implements the methods described in the embodiments of the present invention.

[0149] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0150] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0151] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0152] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0153] If the integrated unit is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0154] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A method for adjusting the pressure of compressed air in a vehicle, characterized in that, include: In response to the engine being powered on in the vehicle, the system acquires first pressure information of the pressure stabilizing device in the vehicle. In response to the first pressure information being less than a first pressure information threshold, the system controls the solenoid valve in the vehicle to be closed and controls the air pump in the engine to perform an air charging operation to the pressure stabilizing device. The solenoid valve is connected between the pressure stabilizing device and the air pump in the engine. The air charging operation is used to indicate the charging of compressed air, and the first pressure information is used to indicate the pressure inside the pressure stabilizing device. In response to the first pressure information being greater than or equal to the first pressure information threshold, the state of the solenoid valve is changed from the closed state to the open state to control the air pump to enter the no-load state, wherein the pressure stabilizing device stops receiving new compressed air in the no-load state; In response to the air compressor successfully entering the no-load state, the second pressure information of the urea tank in the vehicle is obtained. Based on the second pressure information, the on / off state of the urea tank's intake valve and exhaust valve is determined. According to the on / off state of the intake valve and exhaust valve, the urea tank is subjected to an inflation adjustment operation or an exhaust adjustment operation to obtain the operation result. The second pressure information is used to represent the pressure of the urea tank. In response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating device is adjusted using a pressure regulating valve to obtain target pressure information. The third pressure information is directly proportional to the first pressure information. The target pressure information is used to represent the pressure requirements of different devices in the vehicle for the third pressure information. The target pressure information includes first target pressure information and second target pressure information. The first target pressure information is used to represent the range that the exhaust valve of the turbocharger in the vehicle can be used within, and the second target pressure information is used to represent the range that the bench test equipment in the vehicle can be used within. The pressure regulating valve includes a first pressure regulating valve. In response to the air compressor successfully entering the no-load state, the pressure regulating valve is used to adjust the third pressure information of the compressed air output by the pressure stabilizing device to obtain target pressure information. This includes: in response to the air compressor successfully entering the no-load state, adjusting the third pressure information using the first pressure regulating valve to obtain first initial pressure information; and adjusting the first initial pressure information to obtain the first target pressure information.

2. The method according to claim 1, characterized in that, A pressure sensor is deployed in the urea tank. Based on the second pressure information, the on / off state of the urea tank's inlet valve and outlet valve is determined, including: The pressure sensor is used to acquire the second pressure information, and the second pressure information is sent to the engine. The second pressure information is compared with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve.

3. The method according to claim 2, characterized in that, Comparing the second pressure information with a second pressure information threshold to determine the on / off state of the intake valve and the exhaust valve includes: In response to the second pressure information being less than the second pressure information threshold, the switch state of the intake valve is controlled to be the open state, and the switch state of the exhaust valve is controlled to be the closed state; In response to the second pressure information being equal to the second pressure information threshold, the intake valve is controlled to be in the closed state, and the exhaust valve is also controlled to be in the closed state. In response to the second pressure information being greater than the second pressure information threshold, the intake valve is controlled to be in the closed state, and the exhaust valve is controlled to be in the open state.

4. The method according to claim 1, characterized in that, Adjusting the first initial pressure information to obtain the first target pressure information includes: The first initial pressure information is transmitted to the exhaust gas vent valve of the booster. The engine's operating conditions are obtained, and based on these operating conditions, the opening of the exhaust gas venting valve is adjusted to obtain the first target pressure information.

5. The method according to claim 1, characterized in that, The pressure regulating valve includes a second pressure regulating valve. In response to the air pump successfully entering the no-load state, the pressure regulating valve is used to adjust the third pressure information of the compressed air output by the pressure stabilizing device to obtain target pressure information, including: The second pressure regulating valve is used to adjust the third pressure information to obtain the second target pressure information.

6. A pressure regulating device for compressed air in a vehicle, characterized in that, The apparatus is used to perform the method according to any one of claims 1 to 5, the apparatus comprising: A control unit is configured to, in response to the engine being powered on in the vehicle, acquire first pressure information of the voltage regulator in the vehicle; in response to the first pressure information being less than a first pressure information threshold, control the solenoid valve in the vehicle to be closed; and control the air pump in the engine to perform an air charging operation to the voltage regulator, wherein the solenoid valve is connected between the voltage regulator and the air pump in the engine, the air charging operation is used to indicate the charging of compressed air, and the first pressure information is used to indicate the pressure inside the voltage regulator; A conversion unit is configured to, in response to the first pressure information being greater than or equal to the first pressure information threshold, change the state of the solenoid valve from the closed state to the open state, so as to control the air pump to enter the no-load state, wherein, in the no-load state, the pressure stabilizing device stops receiving new compressed air; An adjustment unit is configured to, in response to the air compressor successfully entering the no-load state, acquire second pressure information of the urea tank in the vehicle, determine the on / off state of the urea tank's intake valve and exhaust valve based on the second pressure information, and perform an inflation adjustment operation or an exhaust adjustment operation on the urea tank according to the on / off state of the intake valve and the exhaust valve to obtain an operation result, wherein the second pressure information is used to represent the pressure magnitude of the urea tank; In response to the air compressor successfully entering the no-load state, the third pressure information of the compressed air output by the pressure regulating device is adjusted using a pressure regulating valve to obtain target pressure information. The third pressure information is directly proportional to the first pressure information. The target pressure information is used to represent the pressure requirements of different devices in the vehicle for the third pressure information. The target pressure information includes first target pressure information and second target pressure information. The first target pressure information is used to represent the range that the exhaust valve of the turbocharger in the vehicle can be used within, and the second target pressure information is used to represent the range that the bench test equipment in the vehicle can be used within. The pressure regulating valve includes a first pressure regulating valve, and the adjustment unit is further configured to perform the following steps: in response to the air compressor successfully entering the no-load state, the third pressure information is adjusted using the first pressure regulating valve to obtain first initial pressure information; the first initial pressure information is adjusted to obtain first target pressure information.

7. A processor, characterized in that, The processor is used to run a program, wherein the program executes the method according to any one of claims 1 to 5 when it runs.

8. An electronic device, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 5.

9. A vehicle, characterized in that, include: Memory, which stores executable programs; A processor for running the program, wherein the program, when running, performs the method according to any one of claims 1 to 5.

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