Engine cylinder liner failure detection method, storage medium, device, and system

Abstract

This application provides a method, storage medium, device, and system for detecting engine cylinder liner faults. The method includes: acquiring a first gas transmitted through a gas pipeline; the gas pipeline includes a first conduit for cooling an engine fuel cylinder; the first conduit is used to transmit gas generated during the cooling process of the fuel cylinder. Then, in response to detecting that the components of the first gas include target components generated by fuel combustion, a fault is determined in the fuel cylinder liner. This method achieves timely and accurate detection of cylinder liner faults.

Description

Technical Field

[0001] This application relates to the field of engine technology, and in particular to a method, storage medium, device and system for detecting engine cylinder liners faults. Background Technology

[0002] Damaged engine cylinder liners (such as those with cracks or perforations) can cause engine overheating. If not detected in time, this can lead to cylinder liner detachment or damage to other engine components. To ensure proper engine function, it is necessary to inspect the engine cylinder liners for faults and replace any faulty liners promptly.

[0003] Therefore, there is an urgent need for a solution that can detect engine cylinder liner faults in a timely and accurate manner. Summary of the Invention

[0004] This application provides a method, storage medium, device, and system for fault detection of engine cylinder liners, so as to achieve timely and accurate fault detection of engine cylinder liners.

[0005] In a first aspect, embodiments of this application provide a method for detecting faults in engine cylinder liners, including:

[0006] A first gas is obtained from a gas pipeline; the gas pipeline includes a first pipe for cooling an engine fuel cylinder; the first pipe is used to transport gas generated during the cooling process of the fuel cylinder;

[0007] In response to the detection that the components of the first gas include target components produced by fuel combustion, it is determined that the cylinder liner of the fuel cylinder is faulty, and the fuel is located in the fuel cylinder.

[0008] In one possible implementation, the gas pipeline further includes an expansion tank and a second pipeline, with the first pipeline connected to the expansion tank and one end of the second pipeline connected to the expansion tank and the other end connected to a gas composition detector.

[0009] In one possible implementation, acquiring the first gas transported by the gas pipeline includes:

[0010] In response to the pressure value of the expansion tank meeting a preset condition, the first gas transmitted by the gas pipeline is obtained.

[0011] In one possible implementation, the step of acquiring the first gas transmitted by the gas pipeline in response to the pressure value of the expansion tank satisfying a preset condition includes:

[0012] In response to the pressure value meeting a first preset condition, the one-way valve between the expansion tank and the second pipeline is opened to receive the first gas transmitted from the expansion tank via the one-way valve and the second pipeline.

[0013] In one possible implementation, before determining that the cylinder liner of the fuel cylinder has failed in response to detecting that the components of the first gas include target components produced by fuel combustion:

[0014] In response to the received pressure value of the expansion tank meeting the second preset condition, the gas composition detector is triggered to detect whether the composition of the first gas includes the target component.

[0015] In one possible implementation, determining a cylinder liner failure in the fuel cylinder in response to detecting that the components of the first gas include target components produced by fuel combustion includes:

[0016] In response to the detection of the target component and the content of the target component being greater than a preset threshold, it is determined that the cylinder liner has malfunctioned.

[0017] In one possible implementation, the number of fuel cylinders may include multiple cylinders, and the method further includes:

[0018] In response to determining that the cylinder liner of the fuel cylinder has failed, each fuel cylinder is controlled to shut off one by one. When controlling the shut-off of each fuel cylinder, the following first operation is performed: a second gas transmitted through a gas pipeline is acquired, and the cylinder liner failure is determined based on whether the second gas contains the target component.

[0019] Based on the first operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has failed is determined.

[0020] In one possible implementation, the number of fuel cylinders includes multiple cylinders belonging to different groups; the method further includes:

[0021] In response to determining that the cylinder liner of the fuel cylinder has failed, the cylinders of each fuel cylinder are cut off one by one. When the cylinders of each fuel cylinder are cut off, the following second operation is performed: a third gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the third gas contains the target component.

[0022] Based on the results of the second operation after each fuel cylinder is cut off, the target group of the failure is determined;

[0023] For the target group, the fuel cylinders in the target group are controlled to cut off one by one. When controlling the cut-off of each fuel cylinder, the following third operation is performed: a fourth gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the fourth gas contains the target component.

[0024] Based on the third operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has malfunctioned is determined.

[0025] In one possible implementation, the target component includes one or more of the following:

[0026] Nitrogen oxides, hydrocarbons, and carbon dioxide.

[0027] Secondly, embodiments of this application provide a fault detection system for engine cylinder liners, comprising:

[0028] Engine body, gas composition analyzer, gas pipeline;

[0029] The engine body includes at least one fuel cylinder; each fuel cylinder includes a cylinder liner and a cylinder head; the gas pipeline includes a first pipeline for cooling the engine fuel cylinder; one end of the first pipeline is disposed on the cylinder head for transmitting gas generated during the cooling process of the fuel cylinder; the gas composition detector receives the first gas transmitted by the gas pipeline, detects the composition of the first gas, and determines whether the cylinder liner of the fuel cylinder is faulty based on whether the composition includes a target component; the fuel is located in the fuel cylinder.

[0030] In one possible implementation, the gas pipeline further includes an expansion tank and a second pipeline; the other end of the first pipeline is disposed on the expansion tank;

[0031] The upper arm of the expansion tank is equipped with a one-way valve; the outlet of the one-way valve is connected to one end of a second pipe, and the other end of the second pipe is connected to a gas composition detector; wherein, when the gas pressure in the expansion tank is greater than a first preset pressure threshold, the outlet of the one-way valve opens, and the first gas is transmitted to the gas composition detector through the opened outlet.

[0032] In one possible implementation, a gas pressure sensor is provided on the upper arm of the expansion tank, and the gas pressure sensor is used to detect the pressure value of the expansion tank; the gas pressure sensor is communicatively connected to the gas composition detector and sends the pressure value of the expansion tank to the gas composition detector, wherein the gas composition detector enters the working state in response to the pressure value being greater than a second preset pressure threshold.

[0033] In one possible implementation, the system further includes: an alarm; the gas composition detector is communicatively connected to the alarm; the gas composition detector is used to send an alarm command to the alarm when it is determined that a cylinder liner malfunction has occurred; the alarm outputs an alarm signal according to the received alarm command.

[0034] Thirdly, embodiments of this application provide a fault detection device for an engine cylinder liner, comprising:

[0035] An acquisition module is used to acquire a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipeline for cooling an engine fuel cylinder; the first pipeline is used to transmit gas generated during the cooling process of the fuel cylinder;

[0036] A determination module is configured to determine, in response to detecting that the components of the first gas include target components produced by fuel combustion, that the cylinder liner of the fuel cylinder has malfunctioned, and the fuel is located in the fuel cylinder.

[0037] In one possible implementation, the gas pipeline further includes an expansion tank and a second pipeline, with the first pipeline connected to the expansion tank and one end of the second pipeline connected to the expansion tank and the other end connected to a gas composition detector.

[0038] In one possible implementation, the acquisition module is specifically used for:

[0039] In response to the pressure value of the expansion tank meeting a preset condition, the first gas transmitted by the gas pipeline is obtained.

[0040] In one possible implementation, the acquisition module is specifically used for:

[0041] In response to the pressure value meeting a first preset condition, the one-way valve between the expansion tank and the second pipeline is opened to receive the first gas transmitted from the expansion tank via the one-way valve and the second pipeline.

[0042] In one possible implementation, prior to the determining module, the following is also performed:

[0043] In response to the received pressure value of the expansion tank meeting the second preset condition, the gas composition detector is triggered to detect whether the composition of the first gas includes the target component.

[0044] In one possible implementation, the determining module is specifically used for:

[0045] In response to the detection of the target component and the content of the target component being greater than a preset threshold, it is determined that the cylinder liner has malfunctioned.

[0046] In one possible implementation, the number of fuel cylinders includes multiple cylinders, and the device is further used for:

[0047] In response to determining that the cylinder liner of the fuel cylinder has failed, each fuel cylinder is controlled to shut off one by one. When controlling the shut-off of each fuel cylinder, the following first operation is performed: a second gas transmitted through a gas pipeline is acquired, and the cylinder liner failure is determined based on whether the second gas contains the target component.

[0048] Based on the first operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has failed is determined.

[0049] In one possible implementation, the number of fuel cylinders includes a plurality; the plurality of fuel cylinders belong to different groups; the device is further used for:

[0050] In response to determining that the cylinder liner of the fuel cylinder has failed, the cylinders of each fuel cylinder are cut off one by one. When the cylinders of each fuel cylinder are cut off, the following second operation is performed: a third gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the third gas contains the target component.

[0051] Based on the results of the second operation after each fuel cylinder is cut off, the target group of the failure is determined;

[0052] For the target group, the fuel cylinders in the target group are controlled to cut off one by one. When controlling the cut-off of each fuel cylinder, the following third operation is performed: a fourth gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the fourth gas contains the target component.

[0053] Based on the third operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has malfunctioned is determined.

[0054] In one possible implementation, the target component includes one or more of the following: nitrogen oxides, hydrocarbons, and carbon dioxide.

[0055] Fourthly, embodiments of this application provide an electronic device, including: a memory and a processor;

[0056] The memory stores computer-executed instructions;

[0057] The processor executes computer execution instructions stored in the memory, causing the processor to perform the first aspect and / or various possible implementations of the first aspect as described above.

[0058] Fifthly, embodiments of this application provide a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, are used to implement the first aspect and / or various possible implementations of the first aspect.

[0059] In a sixth aspect, embodiments of this application provide a computer program product, including a computer program that, when executed by a processor, implements the first aspect and / or various possible implementations of the first aspect.

[0060] The engine cylinder liner fault detection method, storage medium, device, and system provided in this application embodiment acquire a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipeline for cooling the engine fuel cylinder; the first pipeline is used to transmit gas generated during the cooling process of the fuel cylinder. Then, in response to detecting that the components of the first gas include target components generated by fuel combustion, a fault is determined to have occurred in the fuel cylinder liner, thus achieving timely and accurate detection of cylinder liner faults. Attached Figure Description

[0061] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0062] Figure 1 A structural diagram of the engine cylinder liner fault detection system provided in this application;

[0063] Figure 2 A flowchart illustrating a fault detection method for an engine cylinder liner provided in this application;

[0064] Figure 3 A flowchart illustrating another method for fault detection of engine cylinder liners provided in this application;

[0065] Figure 4 A schematic diagram of the engine cylinder liner fault detection device provided in this application;

[0066] Figure 5 A schematic diagram of the structure of the electronic device provided in this application.

[0067] The accompanying drawings illustrate specific embodiments of this application, which will be described in more detail below. These drawings and descriptions are not intended to limit the scope of the concept in any way, but rather to illustrate the concept of this application to those skilled in the art through reference to particular embodiments. Detailed Implementation

[0068] Exemplary embodiments will now be described in detail, examples of which are illustrated in the accompanying drawings. When the following description relates to the drawings, unless otherwise indicated, the same numbers in different drawings denote the same or similar elements. The embodiments described in the following exemplary embodiments do not represent all embodiments consistent with this application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of this application as detailed in the appended claims.

[0069] When an engine is running, the inner surface of the cylinder liner (hereinafter referred to as the cylinder liner) is subjected to high temperature and high pressure impacts from fuel combustion, as well as piston thrust and friction. Meanwhile, the outer surface of the cylinder liner is in contact with the coolant, resulting in a significant temperature difference. This generates severe mechanical and thermal stresses, making the cylinder liner susceptible to coolant cavitation and damage (such as cracks or perforations). This allows gases produced by fuel combustion in the cylinder to enter the coolant through cracks or perforations, altering the coolant's composition and preventing it from properly cooling the engine. This leads to engine overheating and damage to engine components. Therefore, to ensure normal engine function, it is necessary to perform cylinder liner fault detection and replace faulty cylinder liners promptly.

[0070] In one example, a temperature sensor can be installed in the engine. If the temperature measured by the temperature sensor exceeds a preset temperature, a cylinder liner failure is determined.

[0071] However, since excessively high temperatures may be caused by other reasons such as insufficient coolant or wear of the water pump impeller, false alarms may occur, making it impossible to detect cylinder liner faults in a timely and accurate manner.

[0072] This application provides a method, storage medium, device, and system for detecting engine cylinder liners to solve the aforementioned technical problems.

[0073] The technical solution of this application and how the technical solution of this application solves the above-mentioned technical problems are described in detail below with specific embodiments. These specific embodiments can be combined with each other, and the same or similar concepts or processes may not be described again in some embodiments. The embodiments of this application will now be described with reference to the accompanying drawings.

[0074] This application provides a fault detection system for engine cylinder liners, which includes: an engine body, a gas composition analyzer, and a gas pipeline.

[0075] The engine body includes at least one fuel cylinder; each fuel cylinder includes a cylinder liner and a cylinder head; the gas pipeline includes a first pipeline for cooling the engine fuel cylinder; one end of the first pipeline is disposed on the cylinder head for transmitting gas generated during the cooling process of the fuel cylinder; a gas composition detector receives the first gas transmitted by the gas pipeline, detects the composition of the first gas, and determines whether the cylinder liner of the fuel cylinder is faulty based on whether the composition includes the target composition; fuel is located in the fuel cylinder.

[0076] For example, the gas composition analyzer can perform component detection on the acquired first gas at first preset time intervals, and can also detect the content of components in the first gas (for example, once per second, after each detection is completed, the old gas is released and the new gas is received).

[0077] The gas pipeline also includes an expansion tank and a second pipeline; the other end of the first pipeline is set on the expansion tank; a one-way valve is set on the upper arm of the expansion tank; the outlet of the one-way valve is connected to the second pipeline, and the other end of the second pipeline is connected to the gas composition detector. The one-way valve opens when the gas pressure in the expansion tank is greater than a first preset pressure threshold, and the first gas is transmitted to the gas composition detector through the opened outlet.

[0078] A gas pressure sensor is installed on the upper arm of the expansion tank. The gas pressure sensor is used to measure the pressure value of the expansion tank (for example, the gas pressure sensor can measure the pressure value of the gas in the expansion tank every second preset time). The gas pressure sensor is connected to a gas composition detector and sends the pressure value of the expansion tank to the gas composition detector. The gas composition detector enters the working state when the pressure value is greater than the second preset pressure threshold.

[0079] The system also includes: an alarm; a gas composition detector communicating with the alarm; when the gas composition detector determines that a cylinder liner fault has occurred, it sends an alarm command to the alarm; the alarm outputs an alarm signal based on the received alarm command. The alarm may be, for example, an audible and visual alarm or a vibration alarm; this embodiment is not limited to either. If the alarm is an audible and visual alarm, the output alarm signal can be a sound and a light signal. If the alarm is a vibration alarm, the output alarm signal can be a vibration signal.

[0080] For example, a fuel cylinder has a combustion chamber, a piston, and a fuel injector. The combustion chamber and piston are located inside the fuel cylinder. The fuel injector of a diesel engine can be mounted on the cylinder head. The fuel injector can directly inject diesel fuel into the combustion chamber. During the compression process in the combustion chamber, the piston will spontaneously ignite the diesel fuel in the combustion chamber due to the increase in temperature (referred to as compression ignition). The fuel injector of a gasoline engine can be mounted on the cylinder head. The fuel injector can directly inject gasoline into the combustion chamber. Alternatively, the fuel injector of a gasoline engine can also be mounted on the intake manifold, and the fuel cylinder is connected to the intake manifold. The fuel injector can inject gasoline into the intake manifold. The gasoline is mixed with air through the intake manifold and then transmitted to the combustion chamber. A spark plug is also installed on the cylinder head, which can ignite the gasoline in the combustion chamber.

[0081] In this embodiment, the engine type can be a diesel engine, a gasoline engine, or a natural gas engine, etc. This embodiment does not limit the type of engine or the method of igniting fuel. This embodiment will be described using compression ignition as an example.

[0082] After the fuel in the combustion chamber is ignited, the energy generated by the combustion of the fuel is used by the piston to do work, converting thermal energy into mechanical energy for output, so as to realize the function of the engine.

[0083] An expansion tank is a component of the engine's cooling system, which uses circulating coolant to cool the fuel cylinders. The expansion tank accommodates the thermal expansion and contraction of the coolant during circulation and provides a space to collect gases expelled from the coolant.

[0084] When the cylinder liner is functioning properly, the gases produced by fuel combustion in the cylinder are isolated from the coolant, and the gases produced by fuel combustion do not participate in the coolant circulation. However, when the cylinder liner is faulty, the gases produced by fuel combustion can enter the coolant through cracks or perforations in the cylinder liner and participate in the coolant circulation. Furthermore, because the components of the gases produced by fuel combustion are poorly soluble in the coolant, these gases will be added to the first gas discharged from the coolant.

[0085] Furthermore, when the gas composition detector detects that the components of the first gas include the target components produced by fuel combustion, it can promptly and accurately determine that the cylinder liner of the fuel cylinder has malfunctioned. The target components can be, for example, one or more of nitrogen oxides, hydrocarbons, and carbon dioxide.

[0086] The engine block also includes an engine controller, and the engine cylinder liner fault detection system includes a control unit. The engine controller is connected to the fuel injectors of the fuel cylinders, and the control unit is connected to the engine controller. The control unit sends operating commands to the engine controller. These commands can be either a cylinder cut-off command (the injector of the cut-off fuel cylinder closes, thus ceasing combustion) or a restart command (the injector of the restarted fuel cylinder restarts, thus resuming combustion). Upon receiving the operating commands from the control unit, the engine controller operates accordingly.

[0087] For example, it can be combined Figure 1 To understand the fault detection system for engine cylinder liners, Figure 1 The structural diagram of the engine cylinder liner fault detection system provided in this application is as follows: Figure 1 As shown, the structural diagram includes: engine body 11, control unit 12, expansion tank 13, gas composition detector 14, alarm 15, first pipe 16, first pipe 17, first pipe 18, first pipe 19, second pipe 20, and pipe 21.

[0088] The engine block 11 includes fuel cylinders 112, 113, 114, and 115. Fuel cylinder 112 includes a cylinder liner 1121, a cylinder head 1122, and a fuel injector 1123, which can be mounted on the cylinder head 1122, for example. Fuel cylinder 113 includes a cylinder liner 1131, a cylinder head 1132, and a fuel injector 1133, which can be mounted on the cylinder head 1132, for example. Fuel cylinder 114 includes a cylinder liner 1141, a cylinder head 1142, and a fuel injector 1143, which can be mounted on the cylinder head 1142, for example. Fuel cylinder 115 includes a cylinder liner 1151, a cylinder head 1152, and a fuel injector 1153, which can be mounted on the cylinder head 1152, for example.

[0089] For example, fuel cylinders 112, 113, 114, and 115 each contain a combustion chamber and a piston. Figure 1 (Not shown in the image).

[0090] The expansion tank 13, first pipes 16, 17, 18, 19, and 21, as well as other pipes in the engine body 11, are interconnected to form a cooling system for coolant circulation, thereby cooling fuel cylinders 112, 113, 114, and 115. Figure 1Other pipes are not shown. Other pipes may be located on the outside of cylinder liners 1121, 1131, 1141, and 1151, or on the inside of cylinder heads 1122, 1132, 1142, and 1152. One end of the first pipe 16 is connected to the cylinder head 1152, and the other end of the first pipe 16 is connected to the expansion tank 13; one end of the first pipe 17 is connected to the cylinder head 1142, and the other end of the first pipe 17 is connected to the expansion tank 13; one end of the first pipe 18 is connected to the cylinder head 1132, and the other end of the first pipe 18 is connected to the expansion tank 13; one end of the first pipe 19 is connected to the cylinder head 1122, and the other end of the first pipe 19 is connected to the expansion tank 13; a gas pressure sensor 131 and a one-way valve 132 are installed on the upper arm of the expansion tank 13; the outlet of the one-way valve 132 is connected to the second pipe 20, and the other end of the second pipe 20 is connected to the gas composition detector 14; the gas pressure sensor 131 is communicatively connected to the gas composition detector 14; the gas composition detector 14 is communicatively connected to the alarm 15.

[0091] The engine body 11 also includes an engine controller 111. Figure 1 The structural diagram also includes a control unit 12. The engine controller 111 is communicatively connected to injectors 1123, 1133, 1143, and 1153, respectively, and the control unit 12 is communicatively connected to the engine controller 111.

[0092] The meanings of the expansion tank 13, gas pressure sensor 131, gas composition detector 14, alarm 15, engine controller 111, and control unit 12 can be referred to the above description, and will not be repeated here.

[0093] Figure 2 A flowchart illustrating a method for detecting engine cylinder liners provided in this application is shown below. Figure 2 As shown, the method includes:

[0094] S201. Obtain a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipeline for cooling an engine fuel cylinder; the first pipeline is used to transmit gas generated during the cooling process of the fuel cylinder.

[0095] In one example, the gas pipeline also includes an expansion tank and a second pipeline. The first pipeline is connected to the expansion tank, and one end of the second pipeline is connected to the expansion tank, while the other end is connected to a gas composition detector.

[0096] For example, the implementing entity of this embodiment can be any device among terminal equipment using an internal combustion engine, other electronic devices / computer equipment, and other apparatuses or devices that can implement the solution of this application, without limitation. Among them, terminal equipment includes, but is not limited to, automobiles, ships, airplanes, tractors, and other devices using internal combustion engines.

[0097] This embodiment describes the process using a terminal device as the executing entity.

[0098] For example, it can be combined Figure 1 To understand, such as Figure 1 As shown, when the coolant in the terminal equipment circulates in the cooling system, the first gas generated during the cooling process of the fuel cylinder is transmitted to the expansion tank 13 through the first pipe 16, first pipe 17, first pipe 18, and first pipe 19, respectively. From the expansion tank 13, the gas is then transmitted to the gas composition detector 14 through the second pipe 20. The meaning of the cooling system has already been described in the embodiment of the engine cylinder liner fault detection system; details can be found in the description of the engine cylinder liner fault detection system embodiment, and will not be repeated here.

[0099] S202, In response to the detection that the components of the first gas include the target components produced by fuel combustion, it is determined that the cylinder liner of the fuel cylinder has malfunctioned; the fuel is located in the fuel cylinder.

[0100] For example, it can be combined Figure 1 To understand, such as Figure 1 As shown, after acquiring the first gas transmitted through the gas pipeline, the gas composition detector 14 in the terminal equipment can detect the components of the first gas to obtain the measured components (assuming they are A1, B1, C1, and D1). Assuming that the target components of the gas produced by fuel combustion are A1, B1, and C1, the measured components include the target components, indicating that at least one cylinder liner in the fuel cylinder of the engine body 11 has a fault.

[0101] The reason why the gas produced by fuel combustion is added to the first gas when the cylinder liner is faulty has been explained in the embodiment of the engine cylinder liner fault detection system. For details, please refer to the description in the embodiment of the engine cylinder liner fault detection system, which will not be repeated here.

[0102] The engine cylinder liner fault detection method provided in this application acquires a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipe for cooling the engine fuel cylinder; the first pipe is used to transmit gas generated during the cooling process of the fuel cylinder. Then, in response to detecting that the components of the first gas include target components generated by fuel combustion, a fault is determined in the fuel cylinder liner, thus achieving timely and accurate detection of cylinder liner faults.

[0103] Figure 3 A flowchart illustrating another engine cylinder liner fault detection method provided in this application is shown below. Figure 3 As shown, in this embodiment... Figure 2 Based on the embodiments, a fault detection method for engine cylinder liners is described in detail, which includes:

[0104] S301. In response to the pressure value of the expansion tank meeting the preset conditions, the first gas transmitted by the gas pipeline is obtained.

[0105] In one example, the gas conduit includes a first conduit for cooling the engine fuel cylinder; the first conduit is used to transport the gas generated during the cooling of the fuel cylinder.

[0106] In one example, the gas pipeline also includes an expansion tank and a second pipeline. The first pipeline is connected to the expansion tank, and one end of the second pipeline is connected to the expansion tank, while the other end is connected to a gas composition detector.

[0107] In one example, in response to a pressure value meeting a first preset condition, a check valve between the expansion tank and the second pipeline is opened to receive the first gas transmitted from the expansion tank via the check valve and the second pipeline.

[0108] For example, the implementing entity of this embodiment can be any device among terminal equipment using an internal combustion engine, other electronic devices / computer equipment, and other apparatuses or devices that can implement the solution of this application, without limitation. Among them, terminal equipment includes, but is not limited to, automobiles, ships, airplanes, tractors, and other devices using internal combustion engines.

[0109] This embodiment describes the process using a terminal device as the executing entity.

[0110] For example, it can be combined Figure 1 To understand, such as Figure 1 As shown in the embodiment of the engine cylinder liner fault detection system, when the cylinder liner is faulty, the gas produced by fuel combustion will be added to the first gas and enter the expansion tank 13. Therefore, the pressure value of the gas in the expansion tank 13 will increase. In order to improve the accuracy of cylinder liner fault detection, the terminal device can open the outlet of the one-way valve 132 between the expansion tank 13 and the second pipeline 20 when the pressure value of the gas in the expansion tank 13 meets the first preset condition, and transmit the first gas in the expansion tank 13 to the gas composition detector 14 through the outlet of the one-way valve 132 and the second pipeline 20.

[0111] The meaning of the first gas and the process by which the first gas is transmitted to the expansion tank 13 through the first pipe 16, the first pipe 17, the first pipe 18, and the first pipe 19 have been described in step S201. For details, please refer to the description in step S201. It will not be repeated here.

[0112] The first preset condition can be, for example, that the pressure of the gas in the expansion tank 13 is greater than the first preset pressure threshold (e.g., 100 kPa). It can also be understood that the outlet of the one-way valve 132 opens when the gas pressure in the expansion tank 13 is greater than the first preset pressure threshold, and the first gas is transmitted from the outlet of the opened one-way valve 132 to the gas composition detector 14. The first preset pressure threshold can be determined based on experience, and this embodiment does not impose any restrictions on it.

[0113] When the pressure value of the expansion tank 13 is greater than the first preset pressure threshold, it can be understood that a cylinder liner failure is suspected. At this time, the gas composition detector 14 receives the first gas through the outlet of the one-way valve 132 and the second pipeline 20, which can drive out the air in the gas composition detector, so that the subsequent detection results of the first gas by the gas composition detector will be more accurate.

[0114] The first gas is transmitted to the gas composition detector 14 via the outlet of the one-way valve 132 and the second pipe 20. This also prevents the coolant in the expansion tank 13 from entering the gas composition detector 14 and affecting the detection results of the gas composition detector 14.

[0115] S302. In response to the received pressure value of the expansion tank meeting the second preset condition, the gas composition detector is triggered to detect whether the components of the first gas include the target component.

[0116] In one example, the target component includes one or more of the following: nitrogen oxides, hydrocarbons, and carbon dioxide.

[0117] For example, it can be combined Figure 1 To understand, such as Figure 1 As shown, the second preset condition can be, for example, that the pressure value measured by the gas pressure sensor 131 is greater than the second preset pressure threshold (for example, 150 kPa). The second preset pressure threshold is greater than the first preset pressure threshold. The specific value can be determined based on experience, and this embodiment does not impose any restrictions on it.

[0118] In one example, after the gas pressure sensor 131 of the expansion tank 13 in the terminal device measures the pressure value, it can send the measured pressure value to the gas composition detector 14. When the pressure value received by the gas composition detector 14 is greater than 150 kPa, it starts to detect whether the first gas in the gas composition detector contains the target component.

[0119] When the pressure in the expansion tank is less than or equal to the second preset pressure threshold, the gas composition detector is in standby mode. When the pressure in the expansion tank is greater than the second preset pressure threshold, it can be understood that a cylinder liner failure is highly likely. At this time, triggering the gas composition detector to perform gas component detection can improve the working efficiency and service life of the gas composition detector.

[0120] S303. In response to the detection of a target component and the content of the target component being greater than a preset threshold, it is determined that the cylinder liner has malfunctioned.

[0121] In one example, when the pressure value received by the gas composition detector 14 is greater than 150 kPa, the gas composition detector 14 starts to detect whether the first gas contains the target component, and at the same time, the content of the target component in the first gas is detected. If the target component is detected and the content of the target component is greater than a preset threshold (if there are multiple target components, it means that the content of each target component is greater than its corresponding preset threshold, which can be understood as the maximum content of the target component when there are no faults in the cylinder liners in the engine body), then it can be more accurately determined that the cylinder liner of at least one fuel cylinder in the engine body 11 has a fault.

[0122] For example, if the gas composition detector 14 detects that the content of target component A1 is H1, the content of target component B1 is H2, and the content of target component C1 is H3, and assuming that the preset threshold for target component A1 is H4 (H1 > H4), the preset threshold for target component B1 is H5 (H2 > H5), and the preset threshold for target component C1 is H6 (H3 > H6), then it is determined that the cylinder liner of at least one fuel cylinder in the engine body 11 has failed. The preset thresholds can be determined empirically, and this embodiment does not impose any restrictions on them.

[0123] S304. In response to determining that the cylinder liner of a fuel cylinder has failed, each fuel cylinder is sequentially cut off. When cutting off each fuel cylinder, the following first operation is performed: acquiring a second gas transmitted through a gas pipeline, and determining whether a cylinder liner failure has occurred based on whether the second gas contains the target component. Based on the results of the first operation after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has failed is determined.

[0124] In one example, the number of fuel cylinders may include multiple cylinders.

[0125] For example, step S304 and steps S305-S306 below are different schemes for determining the target fuel cylinder that has failed, but both can achieve the goal of determining the cylinder liner of the target fuel cylinder that has failed. In actual implementation, one of the implementation methods can be selected according to the requirements, and this embodiment does not limit this.

[0126] First, let's introduce step S304, which can be combined with... Figure 1To understand, such as Figure 1 As shown, after determining that the cylinder liner of at least one fuel cylinder in the engine body 11 has failed, the terminal device can control each fuel cylinder to shut off one by one. When controlling each fuel cylinder to shut off one, the following first operation is performed: acquiring the second gas transmitted through the gas pipeline, and determining whether the fuel cylinder has a cylinder liner failure based on whether the detection result of the second gas includes the target component.

[0127] If the test result does not include the target component, the cylinder liner that has experienced cylinder cut-off is determined to be a faulty cylinder liner, and cylinder cut-off for other fuel cylinders that have not experienced cylinder cut-off is no longer controlled (this can also be understood as the cylinder liners of other fuel cylinders that have not experienced cylinder cut-off are not faulty cylinder liners). If the test result includes the target component, the cylinder liner that has experienced cylinder cut-off is determined to be likely a faulty cylinder liner, and the fuel cylinder that experienced cylinder cut-off is restarted.

[0128] The method for achieving cylinder deactivation has been described in the embodiment of the engine cylinder liner fault detection system. For details, please refer to the description in the embodiment of the engine cylinder liner fault detection system. It will not be repeated here.

[0129] In one example, such as Figure 1 As shown, after determining that the cylinder liner of at least one fuel cylinder in the engine body 11 has failed, the terminal device can send a cylinder cut-off command L1 to the engine controller 111 via the control unit 12. After receiving the cylinder cut-off command L1, the engine controller 111 cuts off the fuel cylinder 112 according to the cylinder cut-off command L1. At this time, the fuel cylinder 112 no longer produces fuel combustion gases, while the other fuel cylinders in the engine body 11 are still producing fuel combustion gases.

[0130] Assuming that the gas composition detector 14 acquires the second gas transmitted through the gas pipeline and detects the components of the second gas to obtain the measured component (assuming it is D1), and assuming that the target components of the gas produced by fuel combustion are A1, B1, and C1, then the measured component does not include the target component (A1, B1, C1), it is determined that the cylinder liner of fuel cylinder 112 is a faulty cylinder liner, and it is determined that the cylinder liners of fuel cylinder 113, fuel cylinder 114, and fuel cylinder 115 are not faulty cylinder liners.

[0131] In another example, suppose that after the terminal device determines that the cylinder liner of at least one fuel cylinder in the engine body 11 has failed, it still sends a cylinder cut-off command L1 to the engine controller 111 via the control unit 12. Then, suppose the gas composition detector 14 acquires the second gas transmitted through the gas pipeline and detects the components of the second gas to obtain the measured components (assumed to be A1, B1, C1, D1). Assuming that the target components of the gas produced by fuel combustion are A1, B1, and C1, the measured components still include the target components, thus determining that the cylinder liner of the fuel cylinder 112 may be the faulty cylinder liner.

[0132] Next, the terminal device sends a restart command Q1 for fuel cylinder 112 and a cylinder cut-off command L2 for fuel cylinder 113 to the engine controller 111 via the control unit 12. After receiving the restart command Q1 and the cylinder cut-off command L2, the engine controller 111 restarts fuel cylinder 112 according to the restart command Q1 and cuts off fuel cylinder 113 according to the cylinder cut-off command L2. At this time, fuel cylinder 113 no longer produces fuel combustion gases, while other fuel cylinders in the engine body 11 are still producing fuel combustion gases.

[0133] Subsequently, the gas composition detector 14 acquires the second gas transmitted through the gas pipeline again and detects the composition of the second gas to obtain the measured composition (assuming it is D1). If the measured composition does not include the target composition (A1, B1, C1), it is determined that the cylinder liner of fuel cylinder 113 is a faulty cylinder liner, and it is determined that the cylinder liners of fuel cylinder 112, fuel cylinder 114, and fuel cylinder 115 are not faulty cylinder liners.

[0134] In yet another example, still combined Figure 1 To understand, such as Figure 1 As described in step S303, even when the gas composition detector detects the target component, it cannot completely determine that the cylinder liner is faulty. Furthermore, more than one cylinder liner may be faulty. Therefore, after determining that the cylinder liner of at least one fuel cylinder in the engine body 11 is faulty, the terminal device controls the cylinder cutoff of each fuel cylinder one by one. When controlling the cylinder cutoff of each fuel cylinder, the following operations are performed: a second gas transmitted through the gas pipeline is acquired, and the presence or absence of the target component in the second gas is determined based on the detection result of the second gas and the content of the target component.

[0135] Assuming the detection result of the second gas includes the target component, and the content of the target component in the second gas is the second measured value; assuming the content of the target component in the first gas is the first measured value, then if the second measured value is equal to the first measured value, it is determined that the cylinder liner that has tripped is not a faulty cylinder liner, and the fuel cylinder that has tripped is restarted; if the second measured value is less than the first measured value and less than a preset threshold, it is determined that the cylinder liner that has tripped is a faulty cylinder liner, and cylinder tripping of other fuel cylinders that have not tripped is no longer controlled (this can be understood as the cylinder liners of other fuel cylinders that have not tripped are not faulty cylinder liners); if the second measured value is less than the first measured value but greater than the preset threshold, it is determined that the cylinder liner that has tripped is a faulty cylinder liner, and there are other faulty cylinder liners, and the fuel cylinder that has tripped is restarted.

[0136] If there are multiple target components, this refers to comparing the second measurement value of each target component with its corresponding first measurement value or a preset threshold. The preset threshold has already been introduced in step S303, and details can be found in the description of step S303; it will not be repeated here.

[0137] For example in Figure 1 In the process, after the terminal equipment determines that the cylinder liner of at least one fuel cylinder in the engine body 11 has failed, it can disconnect the fuel cylinder 112 through the control unit 12 and the engine controller 111. Then, the gas composition detector 14 acquires the second gas transmitted through the gas pipeline and detects the composition of the second gas to obtain the second measurement value (assuming that the second measurement value of the content of target component A1 is H21, the second measurement value of the content of target component B1 is H22, and the second measurement value of the content of target component C1 is H23).

[0138] Assuming the first measured value of the content of target component A1 is H11, the first measured value of the content of target component B1 is H12, and the first measured value of the content of target component C1 is H13, and assuming H21=H11, H22=H12, and H23=H13, then it is determined that the cylinder liner of fuel cylinder 112 is not a faulty cylinder liner, and fuel cylinder 112 is restarted through control unit 12 and engine controller 111.

[0139] Then, the terminal device cuts off the fuel cylinder 113 through the control unit 12 and the engine controller 111. After that, the gas composition detector 14 acquires the second gas transmitted through the gas pipeline and detects the components of the second gas to obtain the second measurement value (assuming the second measurement value of the content of target component A1 is H24, the second measurement value of the content of target component B1 is H25, and the second measurement value of the content of target component C1 is H26). Assuming the preset threshold of the content of target component A1 is H14, the preset threshold of the content of target component B1 is H15, and the preset threshold of the content of target component C1 is H16, and assuming H24 < H14 < H11, H25 < H15 < H12, H26 < H16 < H13, it is determined that the cylinder liner of the fuel cylinder 113 is a faulty cylinder liner, and the control to cut off the fuel cylinders 114 and 115 is no longer implemented (it can also be understood that the cylinder liners of the fuel cylinder 114 and 115 are not faulty cylinder liners).

[0140] When the second measured value is less than the preset threshold, it can be understood that when fuel cylinder 113 is de-energized and fuel cylinders 112, 114, and 115 are started, the content of the target component in the gas generated by the coolant is less than the maximum content of the target component when all cylinder liners in the engine body 11 are fault-free. Therefore, it can be determined that only the cylinder liner of fuel cylinder 113 is a faulty cylinder liner, and the cylinder liners of the other fuel cylinders are not faulty cylinder liners.

[0141] Assuming the terminal device cuts off the fuel cylinder 113 via the control unit 12 and the engine controller 111, the gas composition detector 14 acquires the second gas transmitted through the gas pipeline and detects the components of the second gas to obtain a second measurement value (assuming the second measurement value of the content of target component A1 is H27, the second measurement value of the content of target component B1 is H28, and the second measurement value of the content of target component C1 is H29). Assuming the preset threshold values ​​of the content of target component A1 are H14, the preset threshold values ​​of the content of target component B1 are H15, and the preset threshold values ​​of the content of target component C1 are H16, and assuming H14 < H27 < H11, H15 < H28 < H12, H16 < H29 < H13, then it is determined that the cylinder liner of fuel cylinder 113 is a faulty cylinder liner, and there are also faulty cylinder liners in other fuel cylinders; and then the cylinders 114 and 115 are cut off one by one (which can also be understood as the cylinder liners of fuel cylinder 114 and fuel cylinder 115 may be faulty cylinder liners).

[0142] When the second measured value is less than the first measured value but greater than the preset threshold, it can be understood that when fuel cylinder 113 is de-energized, the target components of the gas generated by the coolant during the startup of fuel cylinders 112, 114, and 115 are also being generated by other fuel cylinders. The content of these generated components is greater than the preset threshold but less than the content generated by all fuel cylinders combined. Therefore, it can be determined that the cylinder liner of fuel cylinder 113 is faulty, and that the cylinder liners of other fuel cylinders are also faulty.

[0143] Next, the terminal device disconnects the fuel cylinders 114 and 115 one by one through the control unit 12 and the engine controller 111. Based on the second measurement value, it determines whether the cylinder liner of the fuel cylinder 114 or the fuel cylinder 115 is a faulty cylinder liner. The specific implementation method is similar to the implementation method of determining whether the cylinder liner of the fuel cylinder 112 or the cylinder liner of the fuel cylinder 113 is a faulty cylinder liner, and will not be described again here.

[0144] S305. In response to determining that a cylinder liner in a fuel cylinder has failed, the system sequentially controls the cylinder cutoff of each fuel cylinder group. When controlling the cylinder cutoff of each group of fuel cylinders, the following second operation is performed: A third gas transmitted through the gas pipeline is acquired, and the presence of a target component in the third gas is determined to indicate whether a cylinder liner failure has occurred. Based on the results of the second operation after each fuel cylinder is cut off, the target group of failures is determined.

[0145] In one example, the number of fuel cylinders includes multiple cylinders belonging to different groups.

[0146] For example, to improve the efficiency of cylinder liner fault detection, after determining that the cylinder liner of at least one fuel cylinder in the engine body has failed, the terminal device can pre-group the fuel cylinders in the engine body. Assuming the engine body includes 12 fuel cylinders, they can be grouped in pairs or groups of four. Then, each group of fuel cylinders is controlled to disconnect. When disconnecting each group of fuel cylinders, the following second operation is performed: A third gas transmitted through the gas pipeline is acquired, and the presence or absence of a target component in the third gas is used to determine whether a cylinder liner fault has occurred. Based on the results of the second operation after disconnecting each fuel cylinder, the target group of faulty cylinders is determined.

[0147] The implementation methods of steps S305 and S304 are similar. For example, the set of fuel cylinders in step S305 can be regarded as a virtual fuel cylinder, and then implemented in accordance with the implementation method of step S304. For details, please refer to the description in step S304, which will not be repeated here.

[0148] S306. For each target group, control the cylinder cutoff of the fuel cylinders within the target group one by one. When controlling the cylinder cutoff of each fuel cylinder, perform the following third operation: acquire the fourth gas transmitted through the gas pipeline, and determine whether a cylinder liner failure has occurred based on whether the fourth gas contains the target component. Based on the results of the third operation after each fuel cylinder cutoff, determine the cylinder liner of the target fuel cylinder that has the failure.

[0149] For example, after identifying the target group where a fault has occurred, the terminal device can also control the cylinder cut-off of each fuel cylinder within that target group, performing the following third operation when controlling the cylinder cut-off of each fuel cylinder: acquiring a fourth gas transmitted through the gas pipeline, and determining whether a cylinder liner fault has occurred based on whether the fourth gas contains the target component. Based on the results of the third operation after each fuel cylinder cut-off, the cylinder liner of the target fuel cylinder that has the fault is determined.

[0150] The implementation method of step S306 is similar to that of step S304. For details, please refer to the description in step S304. It will not be repeated here.

[0151] By controlling the cylinder cutoff of each fuel cylinder one by one, when controlling the cylinder cutoff of each fuel cylinder, based on whether the second gas generated by the coolant circulation includes the target component (or based on the content of the target component), it is possible to pinpoint which fuel cylinder in the engine body has a faulty cylinder liner.

[0152] By pre-grouping the fuel cylinders in the engine block, it is possible to first locate which group of fuel cylinders has a faulty cylinder liner. Then, for the fuel cylinders in the target group with the faulty cylinder liner, cylinder disconnection and troubleshooting can be performed one by one to finally locate which fuel cylinder's cylinder liner has a faulty liner. This allows for faster location of the faulty fuel cylinder's cylinder liner.

[0153] Figure 4 A schematic diagram of the engine cylinder liner fault detection device provided in this application is shown below. Figure 4 As shown, the engine cylinder liner fault detection device 40 provided in this embodiment includes:

[0154] The acquisition module 401 is used to acquire a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipeline for cooling the engine fuel cylinder; the first pipeline is used to transmit the gas generated during the cooling process of the fuel cylinder;

[0155] The determination module 402 is used to determine, in response to detecting that the components of the first gas include target components produced by fuel combustion, that the cylinder liner of the fuel cylinder has malfunctioned and that fuel is located in the fuel cylinder.

[0156] In one possible implementation, the gas pipeline further includes an expansion tank and a second pipeline, with the first pipeline connected to the expansion tank and one end of the second pipeline connected to the expansion tank and the other end connected to a gas composition detector.

[0157] In one possible implementation, the acquisition module 401 is specifically used for:

[0158] In response to the pressure value of the expansion tank meeting the preset conditions, the first gas transmitted by the gas pipeline is obtained.

[0159] In one possible implementation, the acquisition module 401 is specifically used for:

[0160] In response to the pressure value meeting the first preset condition, the one-way valve between the expansion tank and the second pipeline is opened to receive the first gas transmitted from the expansion tank via the one-way valve and the second pipeline.

[0161] In one possible implementation, prior to determining module 402, the following is also performed:

[0162] In response to the received pressure value of the expansion tank meeting the second preset condition, the gas composition detector is triggered to detect whether the composition of the first gas includes the target component.

[0163] In one possible implementation, the determining module 402 is specifically used for:

[0164] In response to the detection of a target component and the fact that the content of the target component is greater than a preset threshold, it is determined that the cylinder liner has malfunctioned.

[0165] In one possible implementation, the number of fuel cylinders includes multiple cylinders, and the device 40 is further used for:

[0166] In response to the determination that the cylinder liner of the fuel cylinder has failed, each fuel cylinder is controlled to shut off one by one. When controlling the shut-off of each fuel cylinder, the following first operation is performed: the second gas transmitted through the gas pipeline is acquired, and the cylinder liner failure is determined based on whether the second gas contains the target component.

[0167] Based on the first operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has failed is determined.

[0168] In one possible implementation, the number of fuel cylinders includes multiple cylinders; the multiple fuel cylinders belong to different groups; the device 40 is also used for:

[0169] In response to the determination that the cylinder liner of the fuel cylinder has failed, the cylinders of each fuel cylinder are cut off one by one. When the cylinders of each fuel cylinder are cut off, the following second operation is performed: a third gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the third gas contains the target component.

[0170] Based on the results of the second operation after each fuel cylinder is cut off, the target group of the failure is determined;

[0171] For each target group, the fuel cylinders within the target group are controlled to cut off one by one. When each fuel cylinder is controlled to cut off one, the following third operation is performed: the fourth gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the fourth gas contains the target component; the cylinder liner of the target fuel cylinder that has the failure is determined based on the results of the third operation after each fuel cylinder is cut off.

[0172] In one possible implementation, the target component includes one or more of the following: nitrogen oxides, hydrocarbons, and carbon dioxide.

[0173] The engine cylinder liner fault detection device provided in this embodiment can execute the method provided in the above method embodiment. Its implementation principle and technical effect are similar, and will not be described in detail here.

[0174] Figure 5 A schematic diagram of the structure of the electronic device provided in this application. Figure 5 As shown, the electronic device 50 provided in this embodiment includes at least one processor 501 and a memory 502. Optionally, the device 50 further includes a communication component 503. The processor 501, memory 502, and communication component 503 are connected via a bus 504.

[0175] In a specific implementation, at least one processor 501 executes computer execution instructions stored in memory 502, causing at least one processor 501 to perform the above-described method.

[0176] The specific implementation process of processor 501 can be found in the above method embodiments, and its implementation principle and technical effect are similar. It will not be repeated here.

[0177] In the above embodiments, it should be understood that the processor can be a Central Processing Unit (CPU), or other general-purpose processors, digital signal processors (DSPs), application-specific integrated circuits (ASICs), etc. The general-purpose processor can be a microprocessor or any conventional processor. The steps of the method disclosed in this invention can be directly implemented by a hardware processor, or implemented by a combination of hardware and software modules within the processor.

[0178] The memory may include random access memory (RAM) and may also include non-volatile memory (NVM), such as at least one disk storage device.

[0179] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component Interconnect (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. Buses can be categorized as address buses, data buses, control buses, etc. For ease of illustration, the buses shown in the accompanying drawings are not limited to a single bus or a single type of bus.

[0180] This application also provides a computer program product, including a computer program that, when executed by a processor, implements the above-described method.

[0181] This application also provides a computer-readable storage medium storing computer-executable instructions, which, when executed by a processor, implement the above-described method.

[0182] The aforementioned readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as static random access memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic storage, flash memory, magnetic disk, or optical disk. The readable storage medium can be any available medium accessible to a general-purpose or special-purpose computer.

[0183] An exemplary readable storage medium is coupled to a processor, enabling the processor to read information from and write information to the readable storage medium. Of course, the readable storage medium can also be a component of the processor. The processor and the readable storage medium can reside in an Application Specific Integrated Circuit (ASIC). Alternatively, the processor and the readable storage medium can exist as discrete components in the device.

[0184] The division of units is merely a logical functional division; in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be indirect coupling or communication connection through some interfaces, devices, or units, and may be electrical, mechanical, or other forms.

[0185] The units described as separate components may or may not be physically separate. The components shown as units may or may not be physical units; that is, they may be located in one place or distributed across multiple network units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0186] In addition, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit.

[0187] If a function is implemented as a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of this invention, or the part that contributes to the prior art, or a part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods of the various embodiments of this invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[0188] Those skilled in the art will understand that all or part of the steps of the above-described method embodiments can be implemented by hardware related to program instructions. The aforementioned program can be stored in a computer-readable storage medium. When executed, the program performs the steps of the above-described method embodiments; and the aforementioned storage medium includes various media capable of storing program code, such as ROM, RAM, magnetic disks, or optical disks.

[0189] Finally, it should be noted that other embodiments of the invention will readily occur to those skilled in the art upon consideration of the specification and practice of the invention disclosed herein. This invention is intended to cover any variations, uses, or adaptations of the invention that follow the general principles of the invention and include common knowledge or customary techniques in the art not disclosed herein, and is not limited to the precise structures described above and shown in the accompanying drawings, and various modifications and changes can be made without departing from its scope. The scope of the invention is limited only by the appended claims.

Claims

1. A method for detecting faults in engine cylinder liners, characterized in that, include: A first gas is obtained from a gas pipeline; the gas pipeline includes a first pipe for cooling an engine fuel cylinder; the first pipe is used to transport gas generated during the cooling process of the fuel cylinder; In response to the detection that the components of the first gas include target components produced by fuel combustion, it is determined that the cylinder liner of the fuel cylinder is faulty, and the fuel is located in the fuel cylinder.

2. The method according to claim 1, characterized in that, The gas pipeline also includes an expansion tank and a second pipeline. The first pipeline is connected to the expansion tank, and one end of the second pipeline is connected to the expansion tank, while the other end is connected to a gas composition detector.

3. The method according to claim 2, characterized in that, The first gas being acquired via the gas pipeline includes: In response to the pressure value of the expansion tank meeting a preset condition, the first gas transmitted by the gas pipeline is obtained.

4. The method according to claim 3, characterized in that, The step of obtaining the first gas transmitted by the gas pipeline in response to the pressure value of the expansion tank meeting a preset condition includes: In response to the pressure value meeting a first preset condition, the one-way valve between the expansion tank and the second pipeline is opened to receive the first gas transmitted from the expansion tank via the one-way valve and the second pipeline.

5. The method according to claim 2, characterized in that, Before determining that the cylinder liner of the fuel cylinder has failed in response to detecting that the components of the first gas include target components produced by fuel combustion, the method further includes: In response to the received pressure value of the expansion tank meeting the second preset condition, the gas composition detector is triggered to detect whether the composition of the first gas includes the target component.

6. The method according to claim 1, characterized in that, In response to detecting that the components of the first gas include target components produced by fuel combustion, determining that the cylinder liner of the fuel cylinder has malfunctioned includes: In response to the detection of the target component and the content of the target component being greater than a preset threshold, it is determined that the cylinder liner has malfunctioned.

7. The method according to any one of claims 1-6, characterized in that, The number of fuel cylinders may include multiple cylinders, and the method further includes: In response to determining that the cylinder liner of the fuel cylinder has failed, each fuel cylinder is controlled to shut off one by one. When controlling the shut-off of each fuel cylinder, the following first operation is performed: a second gas transmitted through a gas pipeline is acquired, and the cylinder liner failure is determined based on whether the second gas contains the target component. Based on the first operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has failed is determined.

8. The method according to any one of claims 1-6, characterized in that, The number of fuel cylinders includes multiple cylinders; the multiple fuel cylinders belong to different groups; the method further includes: In response to determining that the cylinder liner of the fuel cylinder has failed, the cylinders of each fuel cylinder are cut off one by one. When the cylinders of each fuel cylinder are cut off, the following second operation is performed: a third gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the third gas contains the target component. Based on the results of the second operation after each fuel cylinder is cut off, the target group of the failure is determined; For the target group, the fuel cylinders in the target group are controlled to cut off one by one. When controlling the cut-off of each fuel cylinder, the following third operation is performed: a fourth gas transmitted through the gas pipeline is obtained, and the cylinder liner failure is determined based on whether the fourth gas contains the target component. Based on the third operation results after each fuel cylinder is cut off, the cylinder liner of the target fuel cylinder that has malfunctioned is determined.

9. The method according to claim 1, characterized in that, The target component includes one or more of the following: Nitrogen oxides, hydrocarbons, and carbon dioxide.

10. A fault detection system for engine cylinder liners, characterized in that, include: Engine body, gas composition analyzer, gas pipeline; The engine body includes at least one fuel cylinder; each fuel cylinder includes a cylinder liner and a cylinder head; the gas pipeline includes a first pipeline for cooling the engine fuel cylinder; one end of the first pipeline is disposed on the cylinder head for transmitting gas generated during the cooling process of the fuel cylinder; the gas composition detector receives the first gas transmitted by the gas pipeline, detects the composition of the first gas, and determines whether the cylinder liner of the fuel cylinder is faulty based on whether the composition includes a target component; the fuel is located in the fuel cylinder.

11. The system according to claim 10, characterized in that, The gas pipeline also includes an expansion tank and a second pipeline; the other end of the first pipeline is disposed on the expansion tank. A one-way valve is installed on the upper wall of the expansion tank; the outlet of the one-way valve is connected to one end of a second pipe, and the other end of the second pipe is connected to the gas composition detector; wherein, when the gas pressure in the expansion tank is greater than a first preset pressure threshold, the outlet of the one-way valve opens, and the first gas is transmitted to the gas composition detector through the opened outlet.

12. The system according to claim 11, characterized in that, A gas pressure sensor is installed on the upper wall of the expansion tank. The gas pressure sensor is used to detect the pressure value of the expansion tank. The gas pressure sensor is communicatively connected to the gas composition detector and sends the pressure value of the expansion tank to the gas composition detector. The gas composition detector enters the working state when the pressure value is greater than a second preset pressure threshold.

13. The system according to any one of claims 10-12, characterized in that, The system further includes: an alarm; the gas composition detector is communicatively connected to the alarm; when the gas composition detector determines that a cylinder liner malfunction has occurred, it sends an alarm command to the alarm; the alarm outputs an alarm signal according to the received alarm command.

14. A fault detection device for engine cylinder liners, characterized in that, include: An acquisition module is used to acquire a first gas transmitted through a gas pipeline; the gas pipeline includes a first pipeline for cooling an engine fuel cylinder; the first pipeline is used to transmit gas generated during the cooling process of the fuel cylinder; A determination module is configured to determine, in response to detecting that the components of the first gas include target components produced by fuel combustion, that the cylinder liner of the fuel cylinder has malfunctioned, and the fuel is located in the fuel cylinder.

15. An electronic device, characterized in that, include: Memory, processor; The memory stores computer-executed instructions; The processor executes computer execution instructions stored in the memory, causing the processor to perform the method as described in any one of claims 1-9.

16. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer-executable instructions, which, when executed by a processor, are used to implement the method as described in any one of claims 1-9.

17. A computer program product, characterized in that, Includes a computer program that, when executed by a processor, implements the method described in any one of claims 1-9.

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