An engine aftertreatment protector protection method, system, device and storage medium

Abstract

The application discloses an engine aftertreatment device protection method, system, device and storage medium. The engine aftertreatment device protection method comprises the following steps: acquiring the remaining fuel gas amount in the current engine cylinder; confirming the working state of the engine according to the remaining fuel gas amount and a preset fuel gas amount; when the remaining fuel gas amount is less than the preset fuel gas amount, acquiring the duration when the remaining fuel gas amount is less than the preset fuel gas amount; confirming the working state of the engine again according to the duration and a preset duration; and when the duration is greater than or equal to the preset duration, inputting air into the engine cylinder according to the remaining fuel gas amount, wherein the remaining fuel gas amount is the same as the air intake amount of the air, thereby reducing the damage risk of the aftertreatment device and reducing the vehicle use and maintenance costs of the user.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of automobile technology, and in particular to an engine aftertreatment device protection method, system, device and storage medium. BACKGROUND

[0002] The engine continues to drive the vehicle at a low fuel gas amount, and the mixed gas entering the engine cylinder is too little, causing insufficient engine combustion. The mixed gas that has not completed combustion enters the three-way catalytic aftertreatment device with the exhaust gas, and a chemical reaction occurs to cause high temperature, resulting in the problem of aftertreatment device ablation. It is difficult to effectively ensure the reliability of the aftertreatment device, and thus seriously affects the user's vehicle cost. SUMMARY

[0003] The present application provides an engine aftertreatment device protection method, system, device and storage medium to reduce the damage risk of the aftertreatment device and ensure the use effect of the aftertreatment device.

[0004] According to an aspect of the present application, an engine aftertreatment device protection method is provided, comprising:

[0005] obtaining a remaining fuel gas amount in a current engine cylinder;

[0006] confirming a working state of the engine according to the remaining fuel gas amount and a preset fuel gas amount;

[0007] when the remaining fuel gas amount is less than the preset fuel gas amount, obtaining a duration when the remaining fuel gas amount is less than the preset fuel gas amount;

[0008] confirming the working state of the engine again according to the duration and a preset duration;

[0009] when the duration is greater than or equal to the preset duration, inputting air into the engine cylinder according to the remaining fuel gas amount, wherein the remaining fuel gas amount and an air intake amount of the air are the same.

[0010] Optionally, after confirming the working state of the engine according to the remaining fuel gas amount and the preset fuel gas amount, the method further comprises:

[0011] when the remaining fuel gas amount is greater than or equal to the preset fuel gas amount, determining that the engine is in a normal working state.

[0012] Optionally, inputting air into the engine cylinder according to the remaining fuel gas amount comprises:

[0013] calculating the air intake amount of the air according to the remaining fuel gas amount;

[0014] outputting intake valve opening degree information according to the air intake amount;

[0015] outputting air to the engine cylinder according to the air intake amount and the intake valve opening information.

[0016] Optionally, inputting air to the engine cylinder according to the remaining gas amount, wherein the remaining gas amount is the same as the air intake amount of the air, and further comprising:

[0017] calculating an engine torque output value according to the remaining gas amount;

[0018] adjusting the working state of the engine according to the engine torque output value.

[0019] Optionally, after adjusting the working state of the engine according to the engine torque output value, comprising:

[0020] judging whether the engine torque output value is zero and the target vehicle is still in a driving state;

[0021] if yes, stopping the engine from working;

[0022] if no, continuing to adjust the working state of the engine according to the engine torque output value.

[0023] Optionally, judging whether the engine torque output value is zero and the target vehicle is in a driving state, comprising:

[0024] judging whether the engine torque output value is zero;

[0025] if no, continuing to adjust the working state of the engine according to the engine torque output value;

[0026] if yes, judging whether the target vehicle is in a driving state;

[0027] if no, continuing to adjust the working state of the engine according to the engine torque output value;

[0028] if yes, obtaining a driving duration of the target vehicle in the driving state;

[0029] judging whether the driving duration is greater than a preset driving duration;

[0030] if yes, executing engine stopping working;

[0031] if no, continuing to adjust the working state of the engine according to the engine torque output value.

[0032] Optionally, reconfirming the working state of the engine according to the duration and the preset duration, and further comprising:

[0033] When the duration is less than a preset duration, it is determined that the engine is in a normal working state.

[0034] According to another aspect of the present application, there is provided an engine aftertreatment protector system, comprising:

[0035] a remaining gas amount obtaining module configured to obtain a remaining gas amount in a cylinder of the engine;

[0036] a gas value comparison and determination module configured to determine a working state of the engine according to the remaining gas amount and a preset gas amount;

[0037] a duration obtaining module configured to obtain a duration when the remaining gas amount is less than the preset gas amount;

[0038] a duration comparison and determination module configured to determine the working state of the engine again according to the duration and a preset duration;

[0039] an air input module configured to input air into the cylinder of the engine according to the remaining gas amount when the duration is greater than or equal to the preset duration, wherein the remaining gas amount is equal to an air intake amount of the air.

[0040] According to another aspect of the present application, there is provided an electronic device, comprising:

[0041] at least one processor; and

[0042] a memory connected to the at least one processor in communication; wherein

[0043] the memory stores a computer program executable by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to perform the engine aftertreatment protector method according to any one of the above aspects.

[0044] According to another aspect of the present application, there is provided a computer readable storage medium, characterized in that the computer readable storage medium stores computer instructions for enabling a processor to perform the engine aftertreatment protector method according to any one of the above aspects.

[0045] The technical scheme of the embodiment of the application provides an engine aftertreatment device protection method, system, device and storage medium, the engine aftertreatment device protection method comprises the following steps: acquiring the remaining fuel gas amount in the current engine cylinder; confirming the working state of the engine according to the remaining fuel gas amount and a preset fuel gas amount; when the remaining fuel gas amount is less than the preset fuel gas amount, acquiring the duration when the remaining fuel gas amount is less than the preset fuel gas amount; confirming the working state of the engine again according to the duration and a preset duration; and when the duration is greater than or equal to the preset duration, inputting air into the engine cylinder according to the remaining fuel gas amount, wherein the remaining fuel gas amount is the same as the air intake amount of the air, thereby reducing the damage risk of the aftertreatment device and reducing the vehicle use and maintenance costs of the user.

[0046] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the application, nor is it used to limit the scope of the application. Other features of the application will become apparent from the following description. BRIEF DESCRIPTION OF DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can also be obtained by those skilled in the art without creative labor.

[0048] Figure 1 A flowchart of an engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0049] Figure 2 A flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0050] Figure 3 A flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0051] Figure 4 A flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0052] Figure 5 A flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0053] Figure 6 A flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in the figure.

[0054] Figure 7 A structural diagram of an engine aftertreatment device protection system provided by the embodiment of the application is shown in the figure.

[0055] Figure 8 A structural schematic diagram of an electronic device provided by an embodiment of the present application. DETAILED DESCRIPTION

[0056] In order to enable persons skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by persons skilled in the art without creative efforts should fall within the protection scope of the present application.

[0057] It should be noted that the terms "first", "second", and the like in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects, and do not necessarily indicate a specific order or a chronological sequence. It should be understood that the data thus used can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than that illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product, or device that includes a series of steps or units does not necessarily have to be limited to only those steps or units clearly listed, but can include other steps or units that are not clearly listed or inherent to the process, method, product, or device.

[0058] Figure 1 A flowchart of an engine aftertreatment device protection method provided by an embodiment of the present application is shown in the figure. The embodiment can be applicable to a driving condition of an automobile. The method can be executed by an engine aftertreatment device protection system, which can be realized in the form of hardware and / or software. As shown in the figure, the method comprises the following steps. Figure 1

[0059] S101, acquiring a remaining fuel gas amount in a current engine cylinder.

[0060] In the embodiment, the fuel gas amount in the engine cylinder is monitored by using a gas cylinder gas amount monitoring module in the vehicle, and then the remaining fuel gas amount can be sent to an engine control unit. The remaining fuel gas amount reflects different values for different types of vehicles. For a compressed natural gas vehicle, the fuel gas value reflects a pressure value in the current engine cylinder. For a liquefied natural gas vehicle, the fuel gas value reflects a liquid level value in the current engine cylinder. Exemplarily, the specific remaining fuel gas amount signal sending mode can be sending by a hard-wired signal or sending by a bus signal. The sending period can be 1s, 2s, or 5s, etc. The specific signal sending mode and the sending period can be selected according to actual design requirements, and the embodiment of the present application is not limited in this regard. ​

[0061] S102, confirming the working state of the engine according to the remaining gas amount and the preset gas amount.

[0062] In the engine control unit, the preset gas amount is preset, and the comparison is made according to the received current remaining gas amount in the engine cylinder, so as to avoid that the gas amount in the current engine cylinder is too low, the mileage that can support the vehicle to continue running is limited, the vehicle is still continuously driven, the gas is not fully burned, and then the mixed gas that is not fully reacted enters the aftertreatment device with the exhaust gas, chemical reaction occurs to generate high temperature, and the phenomenon of damage to the aftertreatment device occurs.

[0063] S103, when the remaining gas amount is less than the preset gas amount, obtaining the duration when the remaining gas amount is less than the preset gas amount.

[0064] The engine aftertreatment device protection system includes a timer, which can receive the control signal of the engine control unit, and then start the timing work. When the remaining gas amount is less than the preset gas amount, that is, the gas amount in the current engine cylinder is small, the engine control unit obtains the duration when the remaining gas amount is less than the preset gas amount by timing the timer.

[0065] S104, confirming the working state of the engine again according to the duration and the preset duration.

[0066] The preset duration can be 5 minutes, 10 minutes or 15 minutes, etc. The preset duration can be selected according to actual design requirements, and the embodiment of the application is not limited. The engine control unit starts the aftertreatment device protection operation according to the duration of the low gas amount.

[0067] S105, when the duration is greater than or equal to the preset duration, inputting air into the engine cylinder according to the remaining gas amount, wherein the air intake amount of the air is the same as the remaining gas amount.

[0068] When the duration is greater than or equal to the preset duration, the signal of the target vehicle caused by the specific driving posture can be excluded. At this time, the driver has the behavior of continuing to drive the vehicle, and there is a risk of subsequent aftertreatment burning. It is considered that the remaining gas amount in the engine cylinder is small, and protection operation is needed. Air is filled into the engine cylinder, the air intake amount of the air is the same as the remaining gas amount, so that the filled air can fully react with the remaining gas amount, and the unreacted mixed gas enters the aftertreatment device, causing damage to the aftertreatment device.

[0069] The embodiment of the present application obtains the residual gas amount, compares it with the preset gas amount, and then judges the running state of the engine according to the residual gas amount and the preset gas amount. When the residual gas amount is less than the preset gas amount, the duration when the residual gas amount is less than the preset gas amount is obtained, and then when the duration is greater than or equal to the preset duration, air is input to the engine cylinder to ensure that the residual gas amount and the air completely react, avoid damage to the aftertreatment device, and reduce the user's vehicle and maintenance costs.

[0070] Figure 2 Another flowchart of an engine aftertreatment device protection method provided by the embodiment of the present application is shown in FIG. 2, and the method comprises the following steps. Figure 2

[0071] S201, obtaining the residual gas amount in the current engine cylinder.

[0072] S202, confirming the working state of the engine according to the residual gas amount and the preset gas amount.

[0073] S203, when the residual gas amount is greater than or equal to the preset gas amount, determining that the engine is in a normal working state.

[0074] When the residual gas amount is greater than or equal to the preset gas amount, it is considered that the gas amount in the current engine cylinder is in a normal range, that is, the engine is in a normal working state, and the vehicle is in normal operation.

[0075] S204, when the residual gas amount is less than the preset gas amount, obtaining the duration when the residual gas amount is less than the preset gas amount.

[0076] S205, confirming the working state of the engine again according to the duration and the preset duration.

[0077] S206, when the duration is less than the preset duration, determining that the engine is in a normal working state.

[0078] When the duration is less than the preset duration, it is considered that the signal is triggered by mistake due to the driver in a specific driving posture, and the engine of the current vehicle is still in a normal working state and will not cause damage to the aftertreatment device.

[0079] S207, when the duration is greater than or equal to the preset duration, inputting air to the engine cylinder according to the residual gas amount, wherein the residual gas amount is the same as the air intake amount of the air.

[0080] ​The embodiment of the present application obtains the residual gas amount, compares it with the preset gas amount, and then judges the running state of the engine according to the residual gas amount and the preset gas amount. When the residual gas amount is greater than or equal to the preset gas amount, and when the residual gas amount is less than the preset gas amount, and when the duration when the residual gas amount is less than the preset gas amount is less than the preset duration, the engine is considered to be in a normal working state, so as to ensure that the residual gas amount and the air are completely reacted, avoid damage to the aftertreatment device, and reduce the user's vehicle and maintenance costs.

[0081] Optionally, Figure 3 The flowchart of another engine aftertreatment device protection method provided by the embodiment of the present application is shown in FIG. 3, and the method comprises the following steps. Figure 3

[0082] S301, obtaining the residual gas amount in the current engine cylinder.

[0083] S302, confirming the working state of the engine according to the residual gas amount and the preset gas amount.

[0084] S303, when the residual gas amount is greater than or equal to the preset gas amount, determining that the engine is in a normal working state.

[0085] S304, when the residual gas amount is less than the preset gas amount, obtaining the duration when the residual gas amount is less than the preset gas amount.

[0086] S305, confirming the working state of the engine again according to the duration and the preset duration.

[0087] S306, when the duration is less than the preset duration, determining that the engine is in a normal working state.

[0088] S307, when the duration is greater than or equal to the preset duration, calculating the air intake amount of the air according to the residual gas amount.

[0089] When the duration is greater than or equal to the preset duration, the air intake amount of the air is reversely calculated according to the residual gas amount, so as to realize real-time adjustment of the air intake amount, ensure that the ratio of the air intake amount to the residual gas amount is always 1:1, realize complete combustion, and then the lambda value of the exhaust gas entering the aftertreatment device obtained by the oxygen sensor is always 1.

[0090] S308, outputting the intake valve opening degree information according to the air intake amount.

[0091] S309, outputting the air to the engine cylinder according to the intake valve opening degree information, wherein the air intake amount of the air is the same as the residual gas amount.

[0092] ​Wherein, the air intake amount corresponding to the output intake valve opening degree information according to the demand, ensure that the intake valve is opened, air can enter the engine cylinder, the intake valve can be an electronic throttle. The engine control unit outputs air to the engine cylinder according to the intake valve opening degree information, adjusts the air intake amount in real time, the remaining gas amount is the same as the air intake amount of air, and then realizes full combustion, avoids unreacted mixture into the aftertreatment device, and causes damage to the aftertreatment device.

[0093] The embodiment of the application obtains the air intake amount according to the remaining gas amount, and then outputs the intake valve opening degree information according to the air intake amount, so that air enters the engine cylinder, ensures that the remaining gas amount reacts completely with air, avoids damage to the aftertreatment device, and reduces the user's vehicle and maintenance costs.

[0094] Optionally, Figure 4 The flowchart of another engine aftertreatment device protection method provided by the embodiment of the application is shown in Figure 4 The method comprises the following steps of:

[0095] S401, obtaining the remaining gas amount in the current engine cylinder.

[0096] S402, confirming the working state of the engine according to the remaining gas amount and the preset gas amount.

[0097] S403, when the remaining gas amount is greater than or equal to the preset gas amount, determining that the engine is in a normal working state.

[0098] S404, when the remaining gas amount is less than the preset gas amount, obtaining the duration when the remaining gas amount is less than the preset gas amount.

[0099] S405, confirming the working state of the engine again according to the duration and the preset duration.

[0100] S406, when the duration is less than the preset duration, determining that the engine is in a normal working state.

[0101] S407, when the duration is greater than or equal to the preset duration, calculating the air intake amount of air according to the remaining gas amount.

[0102] S408, outputting the intake valve opening degree information according to the air intake amount.

[0103] S409, outputting air to the engine cylinder according to the intake valve opening degree information, wherein the remaining gas amount is the same as the air intake amount of air.

[0104] S410, calculating the engine torque output value according to the remaining gas amount.

[0105] The engine controller calculates the engine torque output value according to the remaining fuel amount, avoids the target torque output value being difficult to meet the current remaining fuel amount, and avoids causing damage to the vehicle.

[0106] S411, adjusting the working state of the engine according to the engine torque output value.

[0107] The remaining fuel amount of the vehicle is less and less, and the actual fuel supply amount is gradually reduced, at this time, the engine control unit calculates the maximum engine torque output value that the engine can currently provide according to the actual fuel amount, limits the engine demand torque to the maximum engine torque value that can be provided through the torque limiter, and dynamically adjusts the working state of the engine in real time.

[0108] The embodiment of the application obtains the engine torque output value according to the remaining fuel amount, and then adjusts the working state of the engine according to the engine torque output value, ensures that the remaining fuel amount and air are completely reacted, avoids damage to the aftertreatment device, and reduces the user's vehicle and maintenance costs.

[0109] Optionally, Figure 5 Another flowchart of an engine aftertreatment device protection method provided by the embodiment of the application is shown in FIG. 4, and the method comprises the following steps. Figure 5

[0110] S501, obtaining the remaining fuel amount in the current engine cylinder.

[0111] S502, confirming the working state of the engine according to the remaining fuel amount and the preset fuel amount.

[0112] S503, when the remaining fuel amount is greater than or equal to the preset fuel amount, determining that the engine is in a normal working state.

[0113] S504, when the remaining fuel amount is less than the preset fuel amount, obtaining the duration when the remaining fuel amount is less than the preset fuel amount.

[0114] S505, confirming the working state of the engine again according to the duration and the preset duration.

[0115] S506, when the duration is less than the preset duration, determining that the engine is in a normal working state.

[0116] S507, when the duration is greater than or equal to the preset duration, calculating the air intake amount of air according to the remaining fuel amount.

[0117] S508, outputting the intake valve opening degree information according to the air intake amount of air.

[0118] ​S509, output air to the engine cylinder according to the intake valve opening degree information, wherein the remaining gas amount is the same as the air intake amount of the air.

[0119] S510, calculate an engine torque output value according to the remaining gas amount.

[0120] S511, adjust the working state of the engine according to the engine torque output value.

[0121] S512, determine whether the engine torque output value is zero and the target vehicle is in a running state; if yes, execute step S513; if no, execute step S511.

[0122] S513, stop the engine from working.

[0123] When the engine torque output value is 0, the target vehicle can only maintain an idle speed, but if the driver continues to drive the target vehicle, the target vehicle is still in a running state, and the engine control unit cannot continue to ensure that the remaining gas amount of the engine is 1:1 with the air amount through control means. At this time, the low gas amount will cause the mixture to become lean, resulting in incomplete combustion in the engine cylinder, and the only effective measure to protect the aftertreatment device at present is to achieve forced engine shutdown, i.e., the engine stops working. If the engine torque output value is not zero, the working state of the engine is adjusted in real time according to the engine torque output value to avoid damage to the aftertreatment device.

[0124] The embodiment of the present application directly stops the engine from working when the engine torque output value is zero and the target vehicle is in a running state, thereby avoiding damage to the aftertreatment device and reducing user vehicle use and maintenance costs.

[0125] Optionally, Figure 6 Another engine aftertreatment device protection method provided by the embodiment of the present application is shown in a flowchart as shown in Figure 6 The method comprises the following steps:

[0126] S601, obtain the remaining gas amount in the current engine cylinder.

[0127] S602, determine the working state of the engine according to the remaining gas amount and a preset gas amount.

[0128] S603, when the remaining gas amount is greater than or equal to the preset gas amount, determine that the engine is in a normal working state.

[0129] S604, when the remaining gas amount is less than the preset gas amount, obtain the duration when the remaining gas amount is less than the preset gas amount.

[0130] S605, determine the working state of the engine again according to the duration and a preset duration.

[0131] S606, when the duration is less than the preset duration, determining that the engine is in a normal working state.

[0132] S607, when the duration is greater than or equal to the preset duration, calculating the air intake amount of air according to the remaining gas amount.

[0133] S608, outputting the intake valve opening degree information according to the air intake amount.

[0134] S609, outputting air to the engine cylinder according to the intake valve opening degree information, wherein the remaining gas amount is the same as the air intake amount of air.

[0135] S610, calculating the engine torque output value according to the remaining gas amount.

[0136] S611, adjusting the working state of the engine according to the engine torque output value.

[0137] S612, determining whether the engine torque output value is zero; if yes, executing step S613; if no, executing step S611.

[0138] S613, determining whether the target vehicle is in a driving state; if yes, executing step S614; if no, executing step S611.

[0139] S614, obtaining the driving duration of the target vehicle in the driving state.

[0140] S615, determining whether the driving duration is greater than a preset driving duration; if yes, executing step S616; if no, executing step S611.

[0141] S616, stopping the engine from working.

[0142] When the engine torque output value is zero and the target vehicle is still in the driving state, the driving duration is obtained, and it is determined whether the driving duration is greater than the preset driving duration, that is, whether the driver has a false touch operation; if the driving duration is greater than the preset driving duration, it is considered that the driver is still driving, and the engine is stopped to work, that is, forced to be turned off; if the driving duration is less than or equal to the preset driving duration, it is considered that the driver has a false touch operation, and the working state of the engine is adjusted according to the engine torque output value, that is, the torque output value is kept to be zero.

[0143] The embodiment of the application avoids the situation that the driver continues to drive the vehicle when the remaining gas amount is insufficient, thereby reducing the user's vehicle use and maintenance costs.

[0144] Figure 7 A structural schematic diagram of an engine aftertreatment device protection system provided by an embodiment of the present application is shown in Figure 7 The system comprises:

[0145] A remaining fuel amount acquisition module 101 is configured to acquire a remaining fuel amount in a cylinder of an engine.

[0146] A fuel value comparison and determination module 102 is configured to determine a working state of the engine according to the remaining fuel amount and a preset fuel amount.

[0147] A duration acquisition module 103 is configured to acquire a duration when the remaining fuel amount is less than the preset fuel amount.

[0148] A duration comparison and determination module 104 is configured to determine the working state of the engine again according to the duration and a preset duration.

[0149] An air input module 105 is configured to input air into the cylinder of the engine according to the remaining fuel amount when the duration is greater than or equal to the preset duration, wherein the remaining fuel amount is equal to an air intake amount of the air.

[0150] The engine aftertreatment device protection system provided by the embodiment of the present application can execute the engine aftertreatment device protection method provided by any of the embodiments of the present application, and has the corresponding functional modules and beneficial effects of the execution method.

[0151] Figure 8 A structural schematic diagram of an electronic device provided by an embodiment of the present application is shown in Figure 8 A structural schematic diagram of an electronic device 10 that can be used to implement embodiments of the present application is shown. The electronic device is intended to represent various forms of digital computers, such as laptops, desktops, tablets, personal digital assistants, servers, blade servers, mainframes, and other appropriate computers. The electronic device can also represent various forms of mobile devices, such as personal digital processors, cellular telephones, smart phones, wearable devices (e.g., headsets, glasses, watches, etc.), and other similar computing devices. The components shown in the figures, their connections and relationships, and their functions, are meant to be examples only, and are not intended to limit implementations of the present application described and / or claimed in this document.

[0152] As shown in Figure 8As shown, the electronic device 10 includes at least one processor 11, and a memory, such as a read-only memory (ROM) 12, a random access memory (RAM) 13, etc., communicatively connected to the at least one processor 11, where the memory stores a computer program executable by the at least one processor. The processor 11 can perform various appropriate actions and processes according to the computer program stored in the read-only memory (ROM) 12 or loaded into the random access memory (RAM) 13 from the storage unit 18. In the RAM 13, various programs and data required for the operation of the electronic device 10 can also be stored. The processor 11, the ROM 12, and the RAM 13 are connected to each other through a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0153] Various components in the electronic device 10 are connected to the I / O interface 15, including an input unit 16, such as a keyboard, a mouse, etc., an output unit 17, such as various types of displays, a speaker, etc., a storage unit 18, such as a magnetic disk, an optical disk, etc., and a communication unit 19, such as a network card, a modem, a wireless communication transceiver, etc. The communication unit 19 allows the electronic device 10 to exchange information / data with other devices through a computer network, such as the Internet, and / or various telecommunication networks.

[0154] The processor 11 can be various general and / or special purpose processing components with processing and computing capabilities. Some examples of the processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, a digital signal processor (DSP), and any appropriate processor, controller, microcontroller, etc. The processor 11 performs various methods and processes described above, such as the engine aftertreatment protector protection method.

[0155] In some embodiments, the engine aftertreatment protector protection method can be implemented as a computer program tangibly embodied in a computer readable storage medium, such as the storage unit 18. In some embodiments, part or all of the computer program can be loaded and / or installed onto the electronic device 10 via the ROM 12 and / or the communication unit 19. When the computer program is loaded into the RAM 13 and executed by the processor 11, one or more steps of the engine aftertreatment protector protection method described above can be performed. Alternatively, in other embodiments, the processor 11 can be configured to perform the engine aftertreatment protector protection method by any other appropriate means, such as by means of firmware.

[0156] The various embodiments of the systems and techniques described above can be implemented in digital electronic circuitry, integrated circuitry, a field programmable gate array (FPGA), an application specific integrated circuit (ASIC), a system on a chip (SOC), a load programmable logic device (CPLD), computer hardware, firmware, software, and / or combinations thereof. These various embodiments can include implementation in one or more computer programs that are executable and / or interpretable on a programmable system including at least one programmable processor, which can be special or general purpose, coupled to receive data and instructions from, and to transmit data and instructions to, a storage system, at least one input device, and at least one output device.

[0157] Computer programs used to implement the processes of the application can be written in any combination of one or more programming languages. These computer programs can be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the computer program, when executed, can cause instructions defined in the flow charts and / or block diagrams to be implemented. The computer program can be executed entirely on a machine, partially on a machine, partially on a machine as a standalone software package and partially on a remote machine or entirely on a remote machine or server.

[0158] In the context of the present application, a computer-readable storage medium can be a tangible medium that can contain or store computer programs for use by or in connection with an instruction execution system, apparatus, or device. Computer-readable storage media can include, but are not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of the machine-readable storage medium will include one or more lines of electrical connections, portable computer disks, hard disk drives, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or Flash memory), optical fibers, portable compact disc read-only memories (CD-ROMs), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0159] To provide for interaction with a user, the systems and techniques described here can be implemented on an electronic device having a display device (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor) for displaying information to the user and a keyboard and a pointing device (e.g., a mouse or a trackball) by which the user can provide input to the electronic device. Other kinds of devices can be used to provide for interaction with a user as well; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form, including acoustic, speech, or tactile input.

[0160] The systems and techniques described here can be implemented in a computing system that includes a back end component (e.g., as a data server), or that includes a middleware component (e.g., an application server), or that includes a front end component (e.g., a user computer having a graphical user interface or a Web browser through which a user can interact with an implementation of the systems and techniques described here), or any combination of such back end, middleware, or front end components. The components of the system can be interconnected by any form or medium of digital data communication (e.g., a communication network). Examples of communication networks include a local area network (LAN), a wide area network (WAN), a blockchain network, and the Internet.

[0161] The computing system can include clients and servers. A client and server are generally remote from each other and typically interact through a communication network. The relationship of client and server arises by virtue of computer programs running on the respective computers and having a client-server relationship to each other. A server can be a cloud server, also known as a cloud computing server or cloud host, which is a host product in the cloud computing service system, to solve the defects of large management difficulty and weak business scalability in traditional physical host and VPS service.

[0162] It should be understood that the various forms of flow shown above can be re-ordered, added to, or deleted from without departing from the scope of the present disclosure. For example, the steps recited in the present disclosure can be executed in parallel, executed in sequence, or executed in a different order, as long as the desired results of the present disclosure are achieved, and the present disclosure is not limited herein.

[0163] The above detailed description does not limit the scope of the present disclosure. It is understood that various modifications, combinations, sub-combinations, and alternatives can be made to the detailed disclosure without departing from the spirit and principles of the present disclosure. Any modifications, equivalent substitutions, improvements, and the like that are made within the spirit and principles of the present disclosure are included in the scope of the present disclosure.

Claims

1. A method for protecting an engine aftertreatment system, characterized in that, include: Get the amount of fuel gas remaining in the current engine cylinder; The engine's operating status is determined based on the remaining gas quantity and the preset gas quantity. When the remaining gas quantity is greater than or equal to the preset gas quantity, the engine is determined to be in normal working condition; When the remaining gas quantity is less than the preset gas quantity, obtain the duration when the remaining gas quantity is less than the preset gas quantity; The engine's operating status is reconfirmed based on the stated duration and the preset duration. When the duration is less than the preset duration, it is determined that the engine is in normal working condition; When the duration is greater than or equal to the preset duration, air is input into the engine cylinder according to the remaining gas quantity, wherein the remaining gas quantity is the same as the air intake quantity.

2. The engine after-processor protection method according to claim 1, characterized in that, Injecting air into the engine cylinders according to the remaining fuel quantity includes: The air intake volume is calculated based on the remaining gas volume; The air intake valve opening information is output based on the air intake volume. Air is input into the engine cylinders according to the air intake volume and the intake valve opening information.

3. The engine after-processor protection method according to claim 1, characterized in that, Air is input into the engine cylinder according to the remaining fuel gas quantity, wherein after the remaining fuel gas quantity is the same as the air intake quantity, the method further includes: Calculate the engine torque output value based on the remaining gas volume; The engine's operating state is adjusted according to the engine torque output value.

4. The engine after-processor protection method according to claim 3, characterized in that, After adjusting the engine's operating state according to the engine torque output value, the following is included: Determine whether the engine torque output value is zero and whether the target vehicle is in motion; If so, the engine will stop working; If not, continue to adjust the engine's operating state according to the engine torque output value.

5. The engine aftertreatment protection method according to claim 4, characterized in that, Determining whether the engine torque output value is zero and the target vehicle is in motion includes: Determine whether the engine torque output value is zero; If not, continue to adjust the engine's operating state according to the engine torque output value; If so, determine whether the target vehicle is in motion; If not, continue to adjust the engine's operating state according to the engine torque output value; If so, then obtain the driving time of the target vehicle in a driving state; Determine whether the driving time is greater than the preset driving time; If so, then the engine will stop working; If not, continue to adjust the engine's operating state according to the engine torque output value.

6. An engine aftertreatment protection system, characterized in that, include: The remaining fuel quantity acquisition module is used to acquire the remaining fuel quantity in the current engine cylinder; The gas value comparison and judgment module is used to determine the working status of the engine based on the remaining gas quantity and the preset gas quantity. When the remaining gas quantity is greater than or equal to the preset gas quantity, it is determined that the engine is in normal working condition. The duration acquisition module is used to acquire the duration when the remaining gas quantity is less than the preset gas quantity. The duration comparison and judgment module is used to reconfirm the working status of the engine based on the duration and the preset duration. When the duration is less than the preset duration, it is determined that the engine is in normal working status. An air input module is used to input air into the engine cylinder according to the remaining gas quantity when the duration is greater than or equal to the preset duration, wherein the remaining gas quantity is the same as the air intake quantity.

7. An electronic device, characterized in that, The electronic device includes: 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, the computer program being executed by the at least one processor to enable the at least one processor to perform the engine aftertreatment protection method according to any one of claims 1-5.

8. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores computer instructions that, when executed by a processor, implement the engine afterprocessor protection method according to any one of claims 1-5.

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