Method, device, equipment and storage medium for determining oil pressure relief point

Abstract

The present application discloses a method, device, equipment, and storage medium for determining an oil pressure relief point, belonging to the field of engine technology. The method comprises: sampling the oil flow rate of a main bearing oil passage to be detected at a preset oil temperature; determining a relief value of the oil pressure corresponding to the sampled oil flow rate relative to the oil pressure corresponding to a reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage; and determining whether a pressure relief has occurred in the main bearing oil passage based on the relief value of the oil pressure in the main bearing oil passage. In this way, it is possible to accurately determine whether the oil pressure relief point is the main bearing oil passage, thereby resolving the complexity and ineffectiveness of disassembling and inspecting internal engine components and improving the efficiency of maintenance work.

Description

Technical Field

[0001] The present application relates to the field of engine technology, and in particular to a method, device, equipment and storage medium for determining an oil pressure relief point. Background Art

[0002] With the advancement of science and technology, the automobile industry is also developing continuously. The engine, as an important component of the car, is also the focus of people's attention. The normal pressure of the engine oil is the key to ensure the normal operation of the engine.

[0003] In the prior art, oil pressure relief failures often occur during engine operation, resulting in poor lubrication of the crankshaft, connecting rod and camshaft bearings, abnormal engine noise, unstable operation and power reduction, or poor lubrication of important friction parts, resulting in local overheating. In severe cases, the engine may become warped. However, there are many reasons for oil pressure relief. For example, most of them are due to failures in the main bearing oil supply and lubrication oil circuit moving parts. At present, when oil pressure relief is found, the engine usually needs to be disassembled because the fault point cannot be determined. The fault point that causes oil pressure relief can only be locked by checking step by step. However, this disassembly and inspection method undoubtedly wastes a lot of manpower and time, and increases the complexity and ineffectiveness of maintenance work.

[0004] Therefore, how to reasonably and efficiently determine the oil pressure relief point and improve the efficiency of maintenance work is a technical problem that needs to be solved urgently. Summary of the Invention

[0005] The embodiments of the present application provide a method, device, equipment and storage medium for determining the oil pressure relief point, which are used to reasonably and efficiently determine the oil pressure relief point and improve the efficiency of maintenance work.

[0006] In a first aspect, an embodiment of the present application provides a method for determining an oil pressure relief point, comprising:

[0007] Sampling the oil flow rate of the main bearing oil passage to be tested at a preset oil temperature;

[0008] Based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage, determining a pressure relief value of the oil pressure corresponding to the sampled oil flow rate relative to the oil pressure corresponding to the reference oil flow rate;

[0009] Based on the pressure relief value of the oil pressure in the main bearing oil passage, it is determined whether pressure relief occurs in the main bearing oil passage.

[0010] In some embodiments, based on a predetermined correspondence between oil pressure and oil flow in a main bearing oil passage, determining a pressure relief value of an oil pressure corresponding to a sampled oil flow relative to an oil pressure corresponding to a reference oil flow includes:

[0011] determining a flow rate change value of the oil flow rate of the main bearing oil passage based on the sampled oil flow rate and a previously acquired reference oil flow rate of the main bearing oil passage;

[0012] Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

[0013] In some embodiments, based on a predetermined correspondence between oil pressure and oil flow in a main bearing oil passage, determining a pressure relief value of an oil pressure corresponding to a sampled oil flow relative to an oil pressure corresponding to a reference oil flow includes:

[0014] Determining a first oil pressure corresponding to the sampled oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0015] Determining a second oil pressure corresponding to a previously obtained reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0016] A corresponding pressure relief value is determined according to the first oil pressure and the second oil pressure.

[0017] In some embodiments, the corresponding relationship between the oil pressure and the oil flow rate of the main bearing oil passage is predetermined in the following manner, including:

[0018] When the oil pressure is normal, a preset oil pressure range is set, and a set of oil pressures and the oil flow rate of the main bearing oil passage corresponding to the oil pressures are collected at set intervals;

[0019] Based on the collected oil pressures and the corresponding main bearing oil passage oil flows, a relationship curve is fitted to map the corresponding relationship between the oil pressures and the main bearing oil passage oil flows.

[0020] In some embodiments, determining whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage includes:

[0021] comparing the oil pressure relief value of the main bearing oil passage with a set pressure relief threshold;

[0022] If the oil pressure relief value of the main bearing oil passage reaches the set pressure relief threshold, it is determined that the main bearing oil passage has experienced pressure relief;

[0023] If the oil pressure relief value does not reach the set pressure relief threshold, it is determined that no pressure relief occurs in the main bearing oil passage.

[0024] In some embodiments, sampling the oil flow rate of the main bearing oil passage to be detected at a preset oil temperature includes:

[0025] At preset time intervals, the oil flow rate of the main bearing oil passage at a preset oil temperature is obtained by integrating the results of an ultrasonic flow meter arranged at one side of the main bearing oil passage.

[0026] In some embodiments, determining whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage includes:

[0027] When oil pressure relief is detected, determining that the main bearing oil passage has relieved pressure based on the relief value of the oil pressure in the main bearing oil passage, and locating the main bearing oil passage as a relief point;

[0028] When oil pressure relief is detected, if it is determined that no pressure relief has occurred in the main bearing oil passage based on the oil pressure relief value of the main bearing oil passage, the main bearing oil passage is located as a non-pressure relief point.

[0029] In a second aspect, an embodiment of the present application provides an oil pressure relief point determination device, comprising:

[0030] A sampling module, used for sampling the oil flow of the main bearing oil channel to be tested at a preset oil temperature;

[0031] a determination module for determining a pressure relief value of an oil pressure corresponding to a sampled oil flow rate relative to an oil pressure corresponding to a reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0032] The determining module is configured to determine whether the main bearing oil passage is depressurized based on a depressurization value of the oil pressure in the main bearing oil passage.

[0033] In some embodiments, the determining module is specifically configured to:

[0034] determining a flow rate change value of the oil flow rate of the main bearing oil passage based on the sampled oil flow rate and a previously acquired reference oil flow rate of the main bearing oil passage;

[0035] Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

[0036] In some embodiments, the determining module is specifically configured to:

[0037] Determining a first oil pressure corresponding to the sampled oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0038] Determining a second oil pressure corresponding to a previously obtained reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0039] A corresponding pressure relief value is determined according to the first oil pressure and the second oil pressure.

[0040] In some embodiments, the corresponding relationship between the oil pressure and the oil flow rate of the main bearing oil passage is predetermined in the following manner, including:

[0041] When the oil pressure is normal, a preset oil pressure range is set, and a set of oil pressures and the oil flow rate of the main bearing oil passage corresponding to the oil pressures are collected at set intervals;

[0042] Based on the collected oil pressures and the corresponding main bearing oil passage oil flows, a relationship curve is fitted to map the corresponding relationship between the oil pressures and the main bearing oil passage oil flows.

[0043] In some embodiments, the determination module is specifically configured to:

[0044] comparing the oil pressure relief value of the main bearing oil passage with a set pressure relief threshold;

[0045] If the oil pressure relief value of the main bearing oil passage reaches the set pressure relief threshold, it is determined that the main bearing oil passage has experienced pressure relief;

[0046] If the oil pressure relief value does not reach the set pressure relief threshold, it is determined that no pressure relief occurs in the main bearing oil passage.

[0047] In some embodiments, the sampling module is specifically configured to:

[0048] At preset time intervals, the oil flow rate of the main bearing oil passage at a preset oil temperature is obtained by integrating the results of an ultrasonic flow meter arranged at one side of the main bearing oil passage.

[0049] In some embodiments, the determination module is specifically configured to:

[0050] When oil pressure relief is detected, determining that the main bearing oil passage has relieved pressure based on the relief value of the oil pressure in the main bearing oil passage, and locating the main bearing oil passage as a relief point;

[0051] When oil pressure relief is detected, if it is determined that no pressure relief has occurred in the main bearing oil passage based on the oil pressure relief value of the main bearing oil passage, the main bearing oil passage is located as a non-pressure relief point.

[0052] In a third aspect, an embodiment of the present application provides an electronic device, including:

[0053] Memory for storing computer programs;

[0054] The processor is configured to implement the steps of the above-mentioned method for determining the oil pressure relief point when executing the computer program stored in the memory.

[0055] In a fourth aspect, a computer-readable storage medium is provided, wherein a computer program is stored in the computer-readable storage medium, and when the computer program is executed by a processor, the steps of the above-mentioned method for determining the oil pressure relief point are implemented.

[0056] In the embodiment of the present application, the oil flow rate of the main bearing oil passage to be tested at a preset oil temperature is sampled, and based on the predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage, a pressure relief value of the oil pressure corresponding to the sampled oil flow rate relative to the oil pressure corresponding to the reference oil flow rate is determined, and based on the pressure relief value of the oil pressure in the main bearing oil passage, it is determined whether the main bearing oil passage has experienced pressure relief. In this way, the pressure relief value of the main bearing oil pressure is determined by the correspondence between the oil flow rate of the main bearing oil passage and the predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage, and then, based on the pressure relief value of the oil pressure in the main bearing oil passage, it is determined whether the main bearing oil passage has experienced pressure relief. This allows accurate determination of whether the oil pressure relief point is the main bearing oil passage, thereby resolving the complexity and ineffectiveness of disassembling and inspecting internal engine components and improving the efficiency of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] The drawings described herein are used to provide a further understanding of the present application and constitute a part of the present application. The illustrative embodiments of the present application and their descriptions are used to explain the present application and do not constitute an improper limitation on the present application. In the drawings:

[0058] Figure 1 A flow chart of a method for determining an oil pressure relief point provided in an embodiment of the present application;

[0059] Figure 2 A schematic structural diagram of a main bearing oil passage provided in an embodiment of the present application;

[0060] Figure 3 A schematic structural diagram of another main bearing oil passage provided in an embodiment of the present application;

[0061] Figure 4 A schematic structural diagram of an oil pressure relief point determination device provided in an embodiment of the present application;

[0062] Figure 5 A schematic diagram of the hardware structure of an electronic device for implementing a method for determining an oil pressure relief point provided in an embodiment of the present application. DETAILED DESCRIPTION

[0063] In order to reasonably and efficiently determine the oil pressure relief point and improve the efficiency of maintenance work, the embodiments of the present application provide an oil pressure relief point determination method, device, equipment and storage medium.

[0064] It should be noted that in the description of this application, "multiple" is understood to mean "at least two." "And / or" describes the association relationship between associated objects, indicating that three relationships may exist. For example, A and / or B can mean: A exists alone, A and B exist, and B exists alone. A and B are connected, which can mean: A and B are directly connected, and A and B are connected through C. In addition, in the description of this application, words such as "first" and "second" are used only for the purpose of distinguishing descriptions, and cannot be understood as indicating or implying relative importance, nor can they be understood as indicating or implying an order.

[0065] The preferred embodiments of the present application are described below in conjunction with the drawings in the specification. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application and are not used to limit the present application. In addition, the embodiments and features in the embodiments of the present application can be combined with each other if there is no conflict.

[0066] The method for determining the oil pressure relief point proposed in this application is described below with reference to a specific embodiment. Figure 1 A flowchart of a method for determining an oil pressure relief point provided in an embodiment of the present application, the method comprising the following steps.

[0067] In step 101 , the oil flow rate of the main bearing oil passage to be detected at a preset oil temperature is sampled.

[0068] In some embodiments, the oil flow rate of the main bearing oil passage at a preset oil temperature can be obtained at preset time intervals by integrating the results of an ultrasonic flow meter disposed on one side of the main bearing oil passage.

[0069] For example, Figure 2 As shown, Figure 2 A structural schematic diagram of a main bearing oil channel provided in an embodiment of the present application, wherein an ultrasonic flowmeter is arranged on one side of the main bearing and connecting rod bearing oil channel, and the ultrasonic transmitting transducer of the ultrasonic flowmeter converts electrical energy into ultrasonic energy and transmits it into the flowing engine oil, and a receiver is arranged on the other side of the oil channel to receive the ultrasonic signal, and the electronic control unit (ECU) records the signals when the ultrasonic wave is emitted and received, amplifies and converts the signals into electrical signals representing the flow rate through electronic circuits, and supplies the display and calculation instruments of the ultrasonic flowmeter for display and calculation, and then obtains the engine oil flow rate of the main bearing oil channel based on the calculation results.

[0070] In step 102 , based on a predetermined correspondence between oil pressure and oil flow in the main bearing oil passage, a pressure relief value of the oil pressure corresponding to the sampled oil flow relative to the oil pressure corresponding to the reference oil flow is determined.

[0071] During specific implementation, the oil pressure range can be preset when the oil pressure is normal, and a set of oil pressures and the oil flow in the main bearing oil channel corresponding to the oil pressure are collected at set intervals. Then, based on the collected oil pressures and the corresponding oil flow in the main bearing oil channel, the corresponding relationship between the oil pressure and the oil flow in the main bearing oil channel is pre-determined by fitting a relationship curve that maps the corresponding relationship between the oil pressure and the oil flow in the main bearing oil channel.

[0072] For example, when the oil pressure is normal, the preset oil pressure range is [100KPa, 500KPa]. Every 30 seconds, a set of oil pressure and main bearing oil passage oil flow at that time is collected. Then, the collected multiple sets of values ​​are fitted to obtain a relationship curve that maps the corresponding relationship between oil pressure and main bearing oil passage oil flow. For example, the relationship curve is P=aQ n +bQ n-1 +c, where P represents the oil pressure, Q represents the oil flow in the main bearing oil passage, and a, b, and c represent preset parameters.

[0073] In specific implementation, after determining the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the flow change value of the oil flow in the main bearing oil channel can be determined based on the sampled oil flow and the reference oil flow of the main bearing oil channel obtained previously. Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

[0074] It should be noted that the reference oil flow rate of the main bearing oil passage refers to a pre-selected oil flow rate of the main bearing oil passage when the oil pressure is normal and at a preset oil temperature.

[0075] In specific implementation, after determining the correspondence between the oil pressure and the oil flow in the main bearing oil channel, it is also possible to determine the first oil pressure corresponding to the sampled oil flow based on the predetermined correspondence between the oil pressure and the oil flow in the main bearing oil channel, and determine the second oil pressure corresponding to the previously obtained reference oil flow based on the predetermined correspondence between the oil pressure and the oil flow in the main bearing oil channel, and then determine the corresponding pressure relief value based on the first oil pressure and the second oil pressure.

[0076] For example, the sampled oil flow is substituted into the correspondence curve between the oil pressure and the oil flow in the main bearing oil channel to determine the first oil pressure P1 corresponding to the sampled oil flow; the reference oil flow is substituted into the correspondence curve between the oil pressure and the oil flow in the main bearing oil channel to determine the second oil pressure P2 corresponding to the reference oil flow; and then the difference between P2 and P1 is determined as the oil pressure relief value.

[0077] In step 103 , it is determined whether the main bearing oil passage is depressurized based on the depressurization value of the oil pressure in the main bearing oil passage.

[0078] During specific implementation, the pressure relief threshold of the main bearing oil channel can be set. For example, the pressure relief threshold is set to 100KPa. If the oil pressure relief value of the main bearing oil channel reaches the set pressure relief threshold, it is determined that pressure relief has occurred in the main bearing oil channel. If the oil pressure relief value does not reach the set pressure relief threshold, it is determined that no pressure relief has occurred in the main bearing oil channel.

[0079] In this way, it is possible to accurately determine whether the oil pressure relief problem is caused by the increase in the clearance between moving parts due to a fault in the main bearing oil channel, thereby facilitating the investigation of the oil pressure relief point, solving the complexity and ineffectiveness of the disassembly and inspection of internal engine components, and improving the efficiency of maintenance work.

[0080] Figure 3 A flowchart of another method for determining an oil pressure relief point provided in an embodiment of the present application, the method comprising the following steps.

[0081] In step 301 , the oil flow rate of the main bearing oil passage to be detected at a preset oil temperature is sampled.

[0082] In step 302 , based on a predetermined correspondence between oil pressure and oil flow in the main bearing oil passage, a pressure relief value of the oil pressure corresponding to the sampled oil flow relative to the oil pressure corresponding to the reference oil flow is determined.

[0083] For specific implementation, please refer to step 102, which will not be described in detail here.

[0084] In step 303 , it is determined whether the oil pressure relief value of the main bearing oil passage reaches a set relief threshold value. If so, the process proceeds to step 304 ; otherwise, the process proceeds to step 305 .

[0085] In step 304 , it is determined that pressure relief occurs in the main bearing oil passage.

[0086] In step 305 , it is determined that no pressure relief occurs in the main bearing oil passage.

[0087] During specific implementation, the oil pressure can also be monitored. When it is detected that the oil pressure has been released, based on the pressure relief value of the oil pressure in the main bearing oil channel, if it is determined that the main bearing oil channel has released pressure, the main bearing oil channel is located as the pressure relief point. When it is detected that the oil pressure has been released, based on the pressure relief value of the oil pressure in the main bearing oil channel, if it is determined that the main bearing oil channel has not released pressure, the main bearing oil channel is located as a non-pressure relief point. At this time, other fault points that may cause oil pressure relief can be further checked, such as whether the oil pump filter is clogged.

[0088] Based on the same technical concept, an embodiment of the present application also provides an oil pressure relief point determination device. The principle of solving the problem by the oil pressure relief point determination device is similar to that of the above-mentioned oil pressure relief point determination method. Therefore, the implementation of the oil pressure relief point determination device can refer to the implementation of the oil pressure relief point determination method, and the repeated parts will not be repeated.

[0089] Figure 4 A structural diagram of an oil pressure relief point determination device provided in an embodiment of the present application includes a sampling module 401 , a determination module 402 , and a judgment module 403 .

[0090] The sampling module 401 is used to sample the oil flow of the main bearing oil channel to be tested at a preset oil temperature;

[0091] a determination module 402 for determining a pressure relief value of an oil pressure corresponding to a sampled oil flow rate relative to an oil pressure corresponding to a reference oil flow rate based on a predetermined correspondence between oil pressure and oil flow rate in a main bearing oil passage;

[0092] The determination module 403 is configured to determine whether the main bearing oil passage is depressurized based on the depressurization value of the oil pressure in the main bearing oil passage.

[0093] In some embodiments, the determining module 402 is specifically configured to:

[0094] determining a flow rate change value of the oil flow rate of the main bearing oil passage based on the sampled oil flow rate and a previously acquired reference oil flow rate of the main bearing oil passage;

[0095] Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

[0096] In some embodiments, the determining module 402 is specifically configured to:

[0097] Determining a first oil pressure corresponding to the sampled oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0098] Determining a second oil pressure corresponding to a previously obtained reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage;

[0099] A corresponding pressure relief value is determined according to the first oil pressure and the second oil pressure.

[0100] In some embodiments, the corresponding relationship between the oil pressure and the oil flow rate of the main bearing oil passage is predetermined in the following manner, including:

[0101] When the oil pressure is normal, a preset oil pressure range is set, and a set of oil pressures and the oil flow rate of the main bearing oil passage corresponding to the oil pressures are collected at set intervals;

[0102] Based on the collected oil pressures and the corresponding main bearing oil passage oil flows, a relationship curve is fitted to map the corresponding relationship between the oil pressures and the main bearing oil passage oil flows.

[0103] In some embodiments, the determination module 403 is specifically configured to:

[0104] comparing the oil pressure relief value of the main bearing oil passage with a set pressure relief threshold;

[0105] If the oil pressure relief value of the main bearing oil passage reaches the set pressure relief threshold, it is determined that the main bearing oil passage has experienced pressure relief;

[0106] If the oil pressure relief value does not reach the set pressure relief threshold, it is determined that no pressure relief occurs in the main bearing oil passage.

[0107] In some embodiments, the sampling module 401 is specifically configured to:

[0108] At preset time intervals, the oil flow rate of the main bearing oil passage at a preset oil temperature is obtained by integrating the results of an ultrasonic flow meter arranged at one side of the main bearing oil passage.

[0109] In some embodiments, the determination module 403 is specifically configured to:

[0110] When oil pressure relief is detected, determining that the main bearing oil passage has relieved pressure based on the relief value of the oil pressure in the main bearing oil passage, and locating the main bearing oil passage as a relief point;

[0111] When oil pressure relief is detected, if it is determined that no pressure relief has occurred in the main bearing oil passage based on the oil pressure relief value of the main bearing oil passage, the main bearing oil passage is located as a non-pressure relief point.

[0112] The division of modules in the embodiments of the present application is schematic and is only a logical function division. There may be other division methods in actual implementation. In addition, the functional modules in the embodiments of the present application may be integrated into one processor, or may exist physically separately, or two or more modules may be integrated into one module. The coupling between the modules can be achieved through some interfaces, which are usually electrical communication interfaces, but it is not ruled out that they may be mechanical interfaces or other forms of interfaces. Therefore, the modules described as separate components may or may not be physically separated, and may be located in one place or distributed to different locations of the same or different devices. The above-mentioned integrated modules can be implemented in the form of hardware or in the form of software functional modules.

[0113] After introducing the oil pressure relief point determination method and apparatus according to an exemplary embodiment of the present application, an electronic device according to another exemplary embodiment of the present application will be introduced.

[0114] Refer to the following Figure 5 The electronic device 130 implemented according to this embodiment of the present application is described. Figure 5 The electronic device 130 shown is merely an example and should not limit the functions and scope of use of the embodiments of the present application.

[0115] like Figure 5 As shown, the electronic device 130 is a general electronic device. Components of the electronic device 130 may include, but are not limited to, the at least one processor 131, the at least one memory 132, and a bus 133 connecting different system components (including the memory 132 and the processor 131).

[0116] Bus 133 represents one or more of several types of bus structures, including a memory bus or memory controller, a peripheral bus, and a processor or local bus using any of a variety of bus architectures.

[0117] The memory 132 may include a readable medium in the form of a volatile memory, such as a random access memory (RAM) 1321 and / or a cache memory 1322 , and may further include a read-only memory (ROM) 1323 .

[0118] The memory 132 may also include a program / utility 1325 having a set (at least one) of program modules 1324, such program modules 1324 including, but not limited to, an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0119] The electronic device 130 may also communicate with one or more external devices 134 (e.g., a keyboard, pointing device, etc.), one or more devices that enable a user to interact with the electronic device 130, and / or any device that enables the electronic device 130 to communicate with one or more other electronic devices (e.g., a router, a modem, etc.). Such communication may occur via an input / output (I / O) interface 135. Furthermore, the electronic device 130 may also communicate with one or more networks (e.g., a local area network (LAN), a wide area network (WAN), and / or a public network such as the Internet) via a network adapter 136. As shown, the network adapter 136 communicates with other modules of the electronic device 130 via a bus 133. It should be understood that, although not shown, other hardware and / or software modules may be used in conjunction with the electronic device 130, including but not limited to microcode, device drivers, redundant processors, external disk drive arrays, RAID systems, tape drives, and data backup storage systems.

[0120] In an exemplary embodiment, a storage medium is also provided. When a computer program stored in the storage medium is executed by a processor of an electronic device, the electronic device can perform the above-described oil pressure relief point determination method. Alternatively, the storage medium can be a non-transitory computer-readable storage medium, such as a ROM, random access memory (RAM), CD-ROM, magnetic tape, floppy disk, or optical data storage device.

[0121] In an exemplary embodiment, the electronic device of the present application may include at least one processor and a memory communicatively connected to the at least one processor, wherein the memory stores a computer program that can be executed by the at least one processor, and when the computer program is executed by the at least one processor, the at least one processor can execute the steps of any oil pressure relief point determination method provided in the embodiments of the present application.

[0122] In an exemplary embodiment, a computer program product is further provided. When the computer program product is executed by an electronic device, the electronic device can implement any exemplary method provided in this application.

[0123] Furthermore, the computer program product may employ any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device, or component, or any combination thereof. More specific examples (a non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, RAM, ROM, an erasable programmable read-only memory (EPROM), a flash memory, an optical fiber, a compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination thereof.

[0124] In the embodiments of the present application, the program product for determining the oil pressure relief point may be implemented as a CD-ROM and include program code, and may be executed on a computing device. However, the program product of the present application is not limited thereto. In this document, a readable storage medium may be any tangible medium containing or storing a program that can be used by or in conjunction with an instruction execution system, apparatus, or device.

[0125] A readable signal medium may include a data signal transmitted in baseband or as part of a carrier wave, which carries readable program code. Such a transmitted data signal may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination thereof. A readable signal medium may also be any readable medium other than a readable storage medium that can transmit, propagate, or transfer a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0126] The program code contained on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, radio frequency (RF), etc., or any suitable combination of the foregoing.

[0127] The program code for performing the operations of the present application can be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code can be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In the case of a remote computing device, the remote computing device can be connected to the user computing device through any type of network, such as a local area network (LAN) or a wide area network (WAN), or can be connected to an external computing device (e.g., via the Internet using an Internet service provider).

[0128] It should be noted that although several units or subunits of the device are mentioned in the detailed description above, this division is merely exemplary and not mandatory. In fact, depending on the embodiment of the application, the features and functions of two or more units described above can be embodied in a single unit. Conversely, the features and functions of a single unit described above can be further divided and embodied by multiple units.

[0129] Furthermore, although the operations of the method of the present application are described in a particular order in the accompanying drawings, this does not require or imply that the operations must be performed in this particular order, or that all illustrated operations must be performed to achieve the desired results. Additionally or alternatively, some steps may be omitted, multiple steps may be combined into one step, and / or one step may be decomposed into multiple steps.

[0130] Those skilled in the art will appreciate that the embodiments of the present application can be provided as methods, systems, or computer program products. Therefore, the present application can adopt the form of a complete hardware embodiment, a complete software embodiment, or an embodiment in combination with software and hardware. Moreover, the present application can adopt the form of a computer program product implemented on one or more computer-usable storage media (including but not limited to magnetic disk storage, CD-ROM, optical storage, etc.) that contain computer-usable program code.

[0131] The present application is described with reference to the flowcharts and / or block diagrams of the methods, apparatus (systems), and computer program products according to the embodiments of the present application. It should be understood that each process and / or box in the flowchart and / or block diagram, as well as the combination of the processes and / or boxes in the flowchart and / or block diagram, can be implemented by computer program instructions. These computer program instructions can be provided to a processor of a general-purpose computer, a special-purpose computer, an embedded processor, or other programmable data processing device to produce a machine, so that the instructions executed by the processor of the computer or other programmable data processing device generate instructions for implementing the steps in the flowchart and / or block diagram. Figure 1 a process or multiple processes and / or boxes Figure 1 A device that provides the functions specified in a block or multiple blocks.

[0132] These computer program instructions may also be stored in a computer readable memory that can direct a computer or other programmable data processing device to work in a specific manner, so that the instructions stored in the computer readable memory produce an article of manufacture comprising an instruction device, which implements the process Figure 1 a process or multiple processes and / or boxes Figure 1 The function specified in one or more boxes.

[0133] These computer program instructions can also be loaded onto a computer or other programmable data processing device so that a series of operational steps are executed on the computer or other programmable device to produce a computer-implemented process, thereby providing the instructions executed on the computer or other programmable device for implementing the process. Figure 1 a process or multiple processes and / or boxes Figure 1 A step that specifies a function in one or more boxes.

[0134] Although the preferred embodiments of the present application have been described, those skilled in the art may make additional changes and modifications to these embodiments once they have learned the basic creative concept. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present application.

[0135] Obviously, those skilled in the art may make various changes and modifications to this application without departing from the spirit and scope of this application. Thus, if these modifications and variations of this application fall within the scope of the claims of this application and their equivalents, this application is intended to include these modifications and variations.

Claims

1. A method for determining an oil pressure relief point, characterized in that: include: The oil flow rate of the main bearing oil passage to be tested at a preset oil temperature is sampled by an ultrasonic flowmeter provided in the main bearing oil passage of the engine; Based on the predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage, a pressure relief value of the oil pressure corresponding to the sampled oil flow rate relative to the oil pressure corresponding to the reference oil flow rate is determined; wherein the relationship curve of the predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage is P=aQ n +bQ n-1 +c, where P represents the oil pressure, Q represents the oil flow in the main bearing oil passage, and a, b, and c represent preset parameters; determining whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage; The step of determining the pressure relief value of the oil pressure corresponding to the sampled oil flow relative to the oil pressure corresponding to the reference oil flow based on the predetermined correspondence between the oil pressure and the oil flow in the main bearing oil passage includes: determining a flow rate change value of the oil flow rate of the main bearing oil passage based on the sampled oil flow rate and a previously acquired reference oil flow rate of the main bearing oil passage; Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

2. The method according to claim 1, wherein Based on a predetermined correspondence between the oil pressure and the oil flow rate of the main bearing oil passage, determining a pressure relief value of the oil pressure corresponding to the sampled oil flow rate relative to the oil pressure corresponding to the reference oil flow rate includes: Determining a first oil pressure corresponding to the sampled oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage; Determining a second oil pressure corresponding to a previously obtained reference oil flow rate based on a predetermined correspondence between the oil pressure and the oil flow rate in the main bearing oil passage; A corresponding pressure relief value is determined according to the first oil pressure and the second oil pressure.

3. The method according to claim 2, wherein The corresponding relationship between the oil pressure and the oil flow rate in the main bearing oil passage is predetermined in the following manner, including: When the oil pressure is normal, a preset oil pressure range is set, and a set of oil pressures and the oil flow rate of the main bearing oil passage corresponding to the oil pressures are collected at set intervals; Based on the collected oil pressures and the corresponding main bearing oil passage oil flows, a relationship curve is fitted to map the corresponding relationship between the oil pressures and the main bearing oil passage oil flows.

4. The method according to claim 1, wherein Determining whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage includes: comparing the oil pressure relief value of the main bearing oil passage with a set pressure relief threshold; If the oil pressure relief value of the main bearing oil passage reaches the set pressure relief threshold, it is determined that the main bearing oil passage has experienced pressure relief; If the oil pressure relief value does not reach the set pressure relief threshold, it is determined that no pressure relief occurs in the main bearing oil passage.

5. The method according to claim 1, wherein Sampling the oil flow of the main bearing oil passage to be tested at the preset oil temperature, including: At preset time intervals, the oil flow rate of the main bearing oil passage at a preset oil temperature is obtained by integrating the results of an ultrasonic flow meter arranged at one side of the main bearing oil passage.

6. The method according to any one of claims 1 to 5, characterized in that: Determining whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage includes: When oil pressure relief is detected, determining that the main bearing oil passage has relieved pressure based on the relief value of the oil pressure in the main bearing oil passage, and locating the main bearing oil passage as a relief point; When oil pressure relief is detected, if it is determined that no pressure relief has occurred in the main bearing oil passage based on the oil pressure relief value of the main bearing oil passage, the main bearing oil passage is located as a non-pressure relief point.

7. A device for determining an oil pressure relief point, characterized in that: include: A sampling module is used to sample the oil flow of the main bearing oil passage to be tested at a preset oil temperature through an ultrasonic flowmeter provided in the engine main bearing oil passage; A determination module is configured to determine a pressure relief value of the oil pressure corresponding to the sampled oil flow relative to the oil pressure corresponding to the reference oil flow based on a predetermined correspondence between the oil pressure and the oil flow in the main bearing oil passage; wherein the relationship curve of the predetermined correspondence between the oil pressure and the oil flow in the main bearing oil passage is P=aQ n +bQ n-1 +c, where P represents the oil pressure, Q represents the oil flow in the main bearing oil passage, and a, b, and c represent preset parameters; a determination module, configured to determine whether pressure relief occurs in the main bearing oil passage based on a pressure relief value of the oil pressure in the main bearing oil passage; The determining module is specifically configured to determine a flow rate change value of the oil flow rate of the main bearing oil passage based on the sampled oil flow rate and a previously acquired reference oil flow rate of the main bearing oil passage; Based on the correspondence between the flow change value and the corresponding pressure relief value determined in advance according to the correspondence between the oil pressure and the oil flow in the main bearing oil channel, the pressure relief value of the oil pressure in the main bearing oil channel corresponding to the flow change value is obtained.

8. An electronic device, characterized in that: include: Memory for storing computer programs; A processor, configured to implement the method steps of any one of claims 1 to 6 when executing the computer program stored in the memory.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the method steps according to any one of claims 1 to 6 are implemented.

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