Supercharger protection method, device and equipment and storage medium

Abstract

The invention discloses a supercharger protection method, device and equipment and a storage medium. The supercharger protection method comprises the steps that a vehicle is powered off, and whether a current range extender is in an idling state or not is judged; when the range extender is in the idling state, an oil cut-off instruction is output to the engine, and the generator is controlled to operate at the preset torque so as to drive the engine to stop; when the range extender is in the non-idling state, an oil cut-off instruction is output to the engine, and the rotating speed of the generator is controlled to be the non-inductive shutdown rotating speed; and controlling the rotating speed of the generator to be 0 after preset time. According to the technical scheme, the problems that when the range extender is shut down, due to flowing interruption of engine cooling liquid, the heat regeneration temperature of the supercharger is too high, engine oil is coked, and the turbocharger is damaged are solved, protection on the supercharger is achieved, meanwhile, the operation requirement of a user for rapid power-off is met, and the user experience feeling is improved.

Description

Technical Field

[0001] This invention relates to the field of range extender control technology, and in particular to a method, apparatus, device, and storage medium for protecting a turbocharger. Background Technology

[0002] A range extender is an onboard power generation device primarily used to charge the battery of an electric vehicle, rather than directly driving the vehicle. When the battery is low, the range extender starts generating electricity to extend the vehicle's driving range. A range extender mainly consists of an engine and a generator, with the engine and generator connected by a drive system. The engine's output power drives the generator to generate electricity. A turbocharger is a device that improves engine combustion efficiency by compressing intake air. A turbocharger increases the amount of air entering the engine, resulting in more complete combustion and allowing for greater power and torque output within the same displacement.

[0003] During the operation of the range extender, the engine combustion provides power, and the temperature inside the engine cylinder is very high at this time, while the coolant flows to dissipate heat. When the operation ends, the range extender stops, and the engine stops rotating. At this time, the temperature inside the engine cylinder is still very high, but the coolant flow is interrupted, which causes the turbocharger to overheat and generate oil coking, which in turn damages the turbocharger. Summary of the Invention

[0004] This invention provides a turbocharger protection method, device, equipment, and storage medium to solve the problem in the prior art where the range extender stops when the engine cylinder temperature is high, resulting in high turbocharger reheat temperature and damage to the turbocharger.

[0005] According to one aspect of the present invention, a turbocharger protection method is provided, comprising:

[0006] When the vehicle is powered off, determine if the range extender is currently idling.

[0007] When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to run at a preset torque to shut down the engine.

[0008] When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0009] After a preset time, the generator speed is controlled to 0.

[0010] Optionally, controlling the generator to operate at a preset torque includes:

[0011] Obtain the turbocharger regenerative temperature;

[0012] When the turbocharger's regenerative temperature is lower than the preset temperature, the generator is controlled to operate at the preset torque.

[0013] When the turbocharger regeneration temperature is greater than or equal to the preset temperature, the generator speed is controlled to the sensorless shutdown speed.

[0014] After a preset time, the generator speed is controlled to 0.

[0015] Optionally, controlling the generator to operate at a preset torque includes:

[0016] Get the required downtime;

[0017] The preset torque is determined based on the required downtime and the relationship between downtime and generator torque.

[0018] Control the generator to operate at a preset torque.

[0019] Optionally, before controlling the generator speed to the sensorless shutdown speed, the following steps are also included:

[0020] Obtain the minimum coolant circulation speed and the critical values ​​of noise-vibration-acoustic roughness parameters; whereby the minimum coolant circulation speed is the minimum speed required to ensure the engine coolant can circulate and cool.

[0021] The sensorless shutdown speed is determined based on the minimum speed of coolant circulation and the critical values ​​of noise-vibration-acoustic roughness parameters.

[0022] Optionally, after a preset time but before controlling the generator speed to 0, the following steps are also included:

[0023] Obtain oil pressure, oil temperature, turbocharger regenerative temperature, and target temperature;

[0024] The preset time is determined based on the oil pressure, oil temperature, turbocharger regeneration temperature, and target temperature.

[0025] Optionally, after controlling the generator to operate at a preset torque, the following is also included:

[0026] When the engine speed is 0, the generator is controlled to stop running.

[0027] Optionally, determine whether the range extender is currently idling, including:

[0028] Obtain engine torque;

[0029] Determine if the engine torque is less than the preset idle torque.

[0030] According to a second aspect of the present invention, a turbocharger protection device is provided for performing a turbocharger protection method, the turbocharger protection device comprising:

[0031] The idle speed detection module is used to determine whether the range extender is in an idle state when the vehicle is powered off.

[0032] The idle stop module is used to output a fuel cut-off command to the engine and control the generator to run at a preset torque when the range extender is idling, so as to drive the engine to stop.

[0033] The non-idle cooling module is used to output a fuel cut-off command to the engine and control the generator speed to the sensorless shutdown speed when the range extender is in a non-idle state.

[0034] The non-idle speed shutdown module controls the generator speed to 0 after a preset time.

[0035] According to a third aspect of the present invention, a computer device is provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements a booster protection method when executing the computer program.

[0036] According to a fourth aspect of the present invention, a computer-readable storage medium is provided having a computer program stored thereon that, when executed by a processor, implements a booster protection method.

[0037] The technical solution of this invention solves the problem of excessively high turbocharger reheat temperature and oil coking caused by interruption of engine coolant flow when the range extender is shut down, which leads to turbocharger damage. It protects the turbocharger and meets the user's need for quick power-off, thus improving the user experience.

[0038] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of the present invention, nor is it intended to limit the scope of the invention. Other features of the invention will become readily apparent from the following description. Attached Figure Description

[0039] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart of a first turbocharger protection method provided according to an embodiment of the present invention;

[0041] Figure 2 This is a flowchart of a second turbocharger protection method provided according to an embodiment of the present invention;

[0042] Figure 3 This is a flowchart of a third turbocharger protection method provided according to an embodiment of the present invention;

[0043] Figure 4This is a flowchart of the fourth turbocharger protection method provided according to an embodiment of the present invention;

[0044] Figure 5 This is a flowchart of the fifth turbocharger protection method provided according to an embodiment of the present invention;

[0045] Figure 6 This is a flowchart of the sixth turbocharger protection method provided according to an embodiment of the present invention;

[0046] Figure 7 This is a flowchart of the seventh turbocharger protection method provided according to an embodiment of the present invention;

[0047] Figure 8 This is a connection diagram of a turbocharger protection device according to an embodiment of the present invention;

[0048] Figure 9 This is a schematic diagram of an electronic device structure for a turbocharger protection method according to an embodiment of the present invention. Detailed Implementation

[0049] 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.

[0050] 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 the 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, product, or apparatus 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, products, or apparatus.

[0051] Figure 1 This is a flowchart of a first turbocharger protection method provided according to an embodiment of the present invention. Figure 1 As shown, the turbocharger protection method includes:

[0052] S10. When the vehicle is powered off, determine whether the range extender is currently idling.

[0053] In this invention, the vehicle power-off can be caused by the driver triggering the vehicle key, resulting in a complete vehicle power-off. The turbocharger protection method in this embodiment is executed after the vehicle power-off because the range extender needs to shut down after power-off, which interrupts the flow of engine coolant, leading to a high turbocharger regeneration temperature. The technical solution of this embodiment determines whether the range extender is in an idling state when the vehicle power-off occurs. The operating state of the engine differs between idling and non-idling states, resulting in different turbocharger regeneration temperatures. The technical solution of this embodiment executes different protection strategies based on the idling and non-idling states of the range extender.

[0054] S11. When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to drive the engine to stop.

[0055] When the range extender is idling, the engine is running at a low torque. It is assumed that the probability of the range extender stopping at this time causing the turbocharger to overheat and become too hot is low. Therefore, the range extender is controlled to stop quickly.

[0056] The range extender's rapid shutdown mechanism involves sending a fuel cut-off command to the engine, causing it to slow down; simultaneously, it controls the generator to operate at a preset torque, which is the torque required to shut down the engine. By controlling the generator to operate at the preset torque, the generator can assist the engine in a rapid shutdown, quickly reducing the engine speed to 0.

[0057] S12. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0058] When the range extender is not idling, it indicates that the engine is operating at high torque. It is assumed that stopping the range extender at this time would cause the turbocharger to overheat, so the range extender is cooled down before being shut down. First, a fuel cut-off command is output, causing the engine speed to decrease and the generator speed to be adjusted from the current speed to the automatic shutdown speed. This automatic shutdown speed is a low speed that ensures the engine coolant continues to circulate and cool the engine. While the generator drives the engine to maintain this automatic shutdown speed, the engine coolant continues to circulate and cool the engine.

[0059] S13. After a preset time, control the generator speed to 0.

[0060] The preset time can be the time it takes for the coolant to cool down to the ideal temperature. The ideal temperature can be the turbocharger's regenerative braking temperature, which will not cause the engine oil to coke. After the preset time for engine coolant circulation, the turbocharger's regenerative braking temperature is assumed to have reached the ideal temperature. At this point, there is no need to maintain the generator at a non-intrusive shutdown speed; the generator speed is controlled to 0, and the range extender completes shutdown.

[0061] Specifically, when the range extender needs to be shut down after the vehicle is powered off, the system first checks whether the range extender is idling to indirectly determine whether stopping the range extender at this time will cause the turbocharger to overheat and cause oil coking. When the range extender is idling, the probability of overheating the turbocharger is considered low, so the generator torque is controlled to assist in a quick shutdown. When the range extender is not idling, it is considered that stopping the range extender will inevitably cause the turbocharger to overheat, so the generator is first controlled to maintain a non-intrusive shutdown speed for a preset time to cool the engine. After the preset time, the range extender is then shut down, thus protecting the turbocharger.

[0062] The technical solution of this invention solves the problem of excessive turbocharger reheat temperature and oil coking caused by interruption of engine coolant flow when the range extender is shut down, which leads to turbocharger damage. It protects the turbocharger and meets the user's need for quick power-off, thus improving the user experience.

[0063] Based on the above embodiments, Figure 2 This is a flowchart of a second turbocharger protection method provided according to an embodiment of the present invention, such as... Figure 2 As shown, the turbocharger protection method includes:

[0064] S20. When the vehicle is powered off, determine whether the range extender is currently idling.

[0065] S21. When the range extender is idling, output a fuel cut-off command to the engine and obtain the turbocharger's regenerative temperature.

[0066] One issue is that when the range extender is idling, the engine cylinder temperature may still be high, potentially leading to a higher turbocharger regenerative temperature. This is because if the range extender has maintained high-speed operation for a period before idling, the engine cylinder temperature may not have dropped to a lower level. Stopping the engine at this point would still result in a higher turbocharger regenerative temperature. Therefore, to ensure accurate turbocharger protection, the turbocharger regenerative temperature is determined after the range extender is identified as idling.

[0067] S22. When the turbocharger regeneration temperature is lower than the preset temperature, control the generator to operate at the preset torque.

[0068] The preset temperature can be the critical temperature value that causes coking of the engine oil in the turbocharger. When the turbocharger's regenerative temperature is lower than the preset temperature, it means that the turbocharger's regenerative temperature is low and will not affect the engine oil. Therefore, the generator is controlled to operate at the preset torque to assist in shutdown.

[0069] S23. When the turbocharger regeneration temperature is greater than or equal to the preset temperature, control the generator speed to the sensorless shutdown speed.

[0070] When the turbocharger regeneration temperature is greater than or equal to the preset temperature, it indicates that the turbocharger regeneration temperature is too high and there is a risk of oil coking. Therefore, the generator speed is controlled to maintain the speed at which the engine stops automatically, so that the engine coolant continues to circulate and cool down.

[0071] S24. After a preset time, control the generator speed to 0.

[0072] When the engine coolant has circulated for a preset time, the turbocharger's regeneration temperature is assumed to reach the ideal temperature. At this point, there is no need to keep the generator at a non-intrusive shutdown speed. The generator speed is controlled to 0, and the range extender completes shutdown.

[0073] S25. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0074] S26. After a preset time, control the generator speed to 0.

[0075] The technical solution of this invention further determines the current turbocharger regeneration temperature when the range extender is idling, and controls the generator speed to be maintained at the non-intrusive shutdown speed when the turbocharger regeneration temperature is greater than the preset temperature, so as to ensure the engine coolant circulation and cooling, thereby improving the accuracy and reliability of turbocharger protection.

[0076] Based on the above embodiments, Figure 3 This is a flowchart of a third turbocharger protection method provided according to an embodiment of the present invention, such as... Figure 3 As shown, the turbocharger protection method includes:

[0077] S30. When the vehicle is powered off, determine whether the range extender is currently idling.

[0078] S31. When the range extender is idling, output a fuel cut-off command to the engine and obtain the turbocharger's regenerative temperature.

[0079] S32. When the turbocharger regeneration temperature is lower than the preset temperature, obtain the required shutdown time.

[0080] The required downtime can be the fast downtime set by the system.

[0081] S33. Determine the preset torque based on the required downtime and the relationship between downtime and generator torque.

[0082] The relationship between shutdown time and generator torque can be a pre-defined correspondence between shutdown time and engine torque. Based on the required shutdown time, the corresponding generator torque can be determined, ensuring that the generator, operating at a preset torque, can stop within the required shutdown time, thus achieving rapid shutdown.

[0083] S34. Control the generator to operate at a preset torque.

[0084] S35. When the turbocharger regeneration temperature is greater than or equal to the preset temperature, control the generator speed to the sensorless shutdown speed.

[0085] S36. After a preset time, control the generator speed to 0.

[0086] S37. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0087] S38. After a preset time, control the generator speed to 0.

[0088] The technical solution of this invention improves the user experience by determining a preset torque between shutdowns based on demand, thereby achieving rapid shutdown.

[0089] Based on the above embodiments, Figure 4 This is a flowchart of the fourth turbocharger protection method provided according to an embodiment of the present invention, such as... Figure 4 As shown, the turbocharger protection method includes:

[0090] S40. When the vehicle is powered off, determine whether the range extender is currently idling.

[0091] S41. When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to shut down the engine.

[0092] S42. When the range extender is not idling, obtain the minimum coolant circulation speed and the critical values ​​of the noise-vibration-acoustic roughness parameters. Among them, the minimum coolant circulation speed is the minimum speed required to ensure that the engine coolant is circulating and cooling.

[0093] The critical value of the noise-vibration-acoustic roughness parameter can be a preset maximum value of the noise-vibration-acoustic roughness parameter that is subjectively acceptable to the driver. To further improve the user experience, the imperceptible shutdown speed can be determined by combining the minimum coolant circulation speed and the critical value of the noise-vibration-acoustic roughness parameter.

[0094] The minimum speed for coolant circulation can be a pre-determined minimum speed that ensures engine coolant circulation.

[0095] S43. Determine the sensorless shutdown speed based on the minimum coolant circulation speed and the critical value of the noise-vibration-acoustic roughness parameters.

[0096] Specifically, the sensorless shutdown speed needs to be greater than or equal to the minimum coolant circulation speed to ensure that the engine coolant can circulate and cool down. Furthermore, when the generator is running at the sensorless shutdown speed, the vehicle's noise-vibration-harshness parameters must be less than the critical value for these parameters. The technical solution of this invention determines the sensorless shutdown speed by using the minimum coolant circulation speed and the critical value for the noise-vibration-harshness parameters. This not only reduces the turbocharger's regenerative temperature but also improves the overall NVH performance of the vehicle, further enhancing the user experience.

[0097] S44: Output fuel cut-off command to the engine and control the generator speed to the sensorless shutdown speed.

[0098] S45. After a preset time, control the generator speed to 0.

[0099] Based on the above embodiments, Figure 5 This is a flowchart of the fifth turbocharger protection method provided according to an embodiment of the present invention, as follows: Figure 5 As shown, the turbocharger protection method includes:

[0100] S50: When the vehicle is powered off, determine whether the range extender is currently idling.

[0101] S51. When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to drive the engine to stop.

[0102] S52. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0103] S53. Obtain oil pressure, oil temperature, turbocharger regenerative temperature, and target temperature.

[0104] The target temperature can be the temperature value that prevents coking of the oil in the turbocharger. The oil pressure can be the pressure of the range extender oil circulating in the pipeline. The oil temperature can be the real-time temperature of the range extender oil.

[0105] S54. Determine the preset time based on the oil pressure, oil temperature, turbocharger regeneration temperature, and target temperature.

[0106] The turbocharger regenerative temperature is a real-time temperature value, while the target temperature is the desired temperature value that the turbocharger needs to achieve. The difference between the turbocharger regenerative temperature and the target temperature can be determined. Since oil pressure and oil temperature affect the cooling rate within the engine cylinders, a relationship between oil pressure, oil temperature, and the difference between the turbocharger regenerative temperature can be established in advance. Based on the real-time detected oil pressure and oil temperature and the calculated difference between the turbocharger regenerative temperature, a corresponding preset time is determined to ensure that the turbocharger regenerative temperature can decrease to below or equal to the target temperature after the imperceptible engine stop speed has been maintained for the preset time.

[0107] S55. After a preset time, control the generator speed to 0.

[0108] The technical solution of this invention ensures the cooling effect of the turbocharger by determining the preset time for the continuous operation of the imperceptible shutdown speed based on the oil pressure, oil temperature, turbocharger regeneration temperature and target temperature.

[0109] Based on the above embodiments, Figure 6 This is a flowchart of the sixth turbocharger protection method provided according to an embodiment of the present invention, such as... Figure 6 As shown, the turbocharger protection method includes:

[0110] S60. When the vehicle is powered off, determine whether the range extender is currently idling.

[0111] S61. When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to drive the engine to stop.

[0112] S62. When the engine speed is 0, control the generator to stop running.

[0113] When the engine speed is 0, it means that the engine is stopped and there is no need to continue controlling the generator to run at the preset torque. The generator is stopped to complete the quick shutdown operation.

[0114] S63. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0115] S64. After a preset time, control the generator speed to 0.

[0116] Based on the above embodiments, Figure 7 This is a flowchart of the seventh turbocharger protection method provided according to an embodiment of the present invention, such as... Figure 7 As shown, the turbocharger protection method includes:

[0117] S70, vehicle power off, obtain engine torque.

[0118] One method is to collect engine torque data to determine the idling status.

[0119] S71. Determine if the engine torque is less than the preset idle torque.

[0120] Specifically, when the engine torque is consistently less than the preset idle torque, it indicates that the range extender is in idle mode; when the engine torque is greater than the preset idle torque, it indicates that the range extender is in non-idling mode.

[0121] S72. When the range extender is idling, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to shut down the engine.

[0122] S73. When the range extender is not idling, it outputs a fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed.

[0123] S74. After a preset time, control the generator speed to 0.

[0124] The technical solution of this invention dynamically monitors key engine parameters (turbocharger regeneration temperature, oil temperature, oil pressure, etc.) and combines them with an intelligent graded shutdown strategy to control the generator to drive the engine at low speed. Under the premise of meeting the turbocharger cooling requirements, it achieves seamless shutdown and improves the user's driving experience.

[0125] Based on the same inventive concept. Figure 8 This is a connection diagram of a turbocharger protection device according to an embodiment of the present invention, as shown below. Figure 8 As shown, this embodiment of the invention also provides a turbocharger protection device for performing a turbocharger protection method. The turbocharger protection device includes:

[0126] The idle speed determination module 100 is used to determine whether the range extender is in an idle state when the vehicle is powered off.

[0127] The idle stop module 200 is used to output a fuel cut-off command to the engine and control the generator to operate at a preset torque when the range extender is in an idle state, so as to drive the engine to stop.

[0128] The non-idle cooling module 300 is used to output a fuel cut-off command to the engine and control the generator speed to the sensorless shutdown speed when the range extender is in a non-idle state.

[0129] The non-idle stop module 400 controls the generator speed to 0 after a preset time.

[0130] Specifically, firstly, when the vehicle is powered off, the idle speed detection module 100 determines whether the range extender is currently idling. If the range extender is idling, the idle speed shutdown module 200 outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to shut down the engine. When the range extender is not idling, the idle speed cooling module 300 outputs a fuel cut-off command to the engine and controls the generator speed to a sensorless shutdown speed. After a preset time, the non-idle speed shutdown module 400 controls the generator speed to 0.

[0131] The turbocharger protection device provided in this embodiment of the invention can be used to execute any of the turbocharger protection methods provided in the above embodiments, has corresponding functional modules, and has the same technical effect.

[0132] Based on the same inventive concept, embodiments of the present invention also provide a computer device. Figure 9 This is a schematic diagram of an electronic device structure applied to a booster protection method according to an embodiment of the present invention, as shown below. Figure 9 As shown, it includes a memory, a processor, and a computer program stored in the memory and executable on the processor. When the processor executes the program, it implements a booster protection method.

[0133] The term "electronic device" is intended to refer to various forms of digital computers, such as laptop computers, desktop computers, workstations, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. Electronic devices can also refer to various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (e.g., helmets, glasses, watches), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely illustrative and are not intended to limit the implementation of the invention described and / or claimed herein.

[0134] like Figure 9 As shown, the electronic device 50 includes at least one processor 51 and a memory, such as a read-only memory (ROM) 52 and a random access memory (RAM) 53, communicatively connected to the at least one processor 51. The memory stores computer programs executable by the at least one processor. The processor 51 can perform various appropriate actions and processes based on the computer program stored in the ROM 52 or loaded from storage unit 58 into the RAM 53. The RAM 53 can also store various programs and data required for the operation of the electronic device 50. The processor 51, ROM 52, and RAM 53 are interconnected via a bus 54. An input / output (I / O) interface 55 is also connected to the bus 54.

[0135] Multiple components in electronic device 50 are connected to I / O interface 55, including: input unit 56, such as keyboard, mouse, etc.; output unit 57, such as various types of monitors, speakers, etc.; storage unit 58, such as disk, optical disk, etc.; and communication unit 59, such as network card, modem, wireless transceiver, etc. Communication unit 59 allows electronic device 50 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0136] Processor 51 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 51 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any suitable processor, controller, microcontroller, etc. Processor 51 performs the various methods and processes described above, such as those applied to booster protection methods.

[0137] Based on the same inventive concept, embodiments of the present invention also provide a computer-readable storage medium having a computer program stored thereon, which, when executed by a processor, implements a booster protection method.

[0138] Of course, the computer-readable storage medium provided in the embodiments of the present invention has computer-executable instructions that are not limited to the method operations described above, but can also perform related operations in the turbocharger protection method provided in any embodiment of the present invention. (Continue referring to...) Figure 9 As shown, it is tangibly contained in a computer-readable storage medium, such as storage unit 58. In some embodiments, part or all of the computer program may be loaded and / or mounted on electronic device 50 via ROM 52 and / or communication unit 59. When the computer program is loaded into RAM 53 and executed by processor 51, one or more steps of the turbocharger protection method described above may be performed. Alternatively, in other embodiments, processor 51 may be configured to perform the turbocharger protection method by any other suitable means (e.g., by means of firmware).

[0139] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transferring data and instructions to the storage system, the at least one input device, and the at least one output device.

[0140] Computer programs used to implement the methods of the present invention may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0141] In the context of embodiments of the present invention, a computer-readable storage medium may be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium may include, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium may be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fibers, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0142] It should be understood that the various forms of processes shown above can be used, with steps reordered, added, or deleted. For example, the steps described in this invention can be executed in parallel, sequentially, or in different orders, as long as the desired result of the technical solution of this invention can be achieved, and this is not limited herein.

[0143] The specific embodiments described above do not constitute a limitation on the scope of protection of this invention. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this invention should be included within the scope of protection of this invention.

Claims

1. A method for protecting a turbocharger, characterized in that, include: When the vehicle is powered off, determine if the range extender is currently idling. When the range extender is in the idling state, it outputs a fuel cut-off command to the engine and controls the generator to operate at a preset torque to drive the engine to stop. When the range extender is not idling, it outputs the fuel cut-off command to the engine and controls the generator speed to the sensorless shutdown speed. After a preset time, the generator speed is controlled to 0.

2. The turbocharger protection method according to claim 1, characterized in that, Controlling the generator to operate at a preset torque includes: Obtain the turbocharger regenerative temperature; When the regenerative temperature of the turbocharger is lower than the preset temperature, the generator is controlled to operate at a preset torque. When the regenerative temperature of the turbocharger is greater than or equal to the preset temperature, the generator speed is controlled to be the sensorless shutdown speed. After the preset time has elapsed, the generator speed is controlled to be 0.

3. The turbocharger protection method according to claim 2, characterized in that, Controlling the generator to operate at a preset torque includes: Get the required downtime; The preset torque is determined based on the required downtime and the relationship between downtime and generator torque. Control the generator to operate at the preset torque.

4. The turbocharger protection method according to claim 1, characterized in that, Before controlling the generator speed to the sensorless shutdown speed, the following steps are also included: Obtain the minimum coolant circulation speed and the critical values ​​of noise-vibration-acoustic roughness parameters; wherein, the minimum coolant circulation speed is the minimum speed required to ensure the engine coolant can circulate and cool; The sensorless shutdown speed is determined based on the minimum speed of the coolant circulation and the critical value of the noise-vibration-acoustic roughness parameter.

5. The turbocharger protection method according to claim 1, characterized in that, Before controlling the generator speed to 0 after a preset time, the process also includes: Obtain oil pressure, oil temperature, turbocharger regenerative temperature, and target temperature; The preset time is determined based on the oil pressure, the oil temperature, the turbocharger regeneration temperature, and the target temperature.

6. The turbocharger protection method according to claim 1, characterized in that, After controlling the generator to operate at a preset torque, the following is also included: When the engine speed is 0, the generator is controlled to stop running.

7. The turbocharger protection method according to claim 1, characterized in that, Determining whether the range extender is currently idling includes: Obtain engine torque; Determine whether the engine torque is less than the preset idle torque.

8. A turbocharger protection device, characterized in that, For performing the turbocharger protection method according to any one of claims 1-7, the turbocharger protection device comprises: The idle speed detection module is used to determine whether the range extender is in an idle state when the vehicle is powered off. The idle stop module is used to output a fuel cut-off command to the engine and control the generator to operate at a preset torque when the range extender is in the idle state, so as to drive the engine to stop. The non-idle cooling module is used to output the fuel cut-off command to the engine and control the generator speed to the sensorless shutdown speed when the range extender is in a non-idle state. The non-idle stop module controls the generator speed to 0 after a preset time.

9. A computer device, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, characterized in that, The processor implements the turbocharger protection method as described in any one of claims 1-7 when executing a computer program.

10. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by the processor, it implements the turbocharger protection method as described in any one of claims 1-7.

Images