Alarm method, device, equipment and storage medium based on engine backfire problem

Abstract

An alarm method, device, equipment and computer-readable storage medium based on engine backfire problems, comprising: determining whether a backfire problem occurs in the engine of a vehicle based on information collected about the current vehicle speed and temperature change of the intake pipe; if it is determined that the engine has a backfire problem, calculating the total pressure shock caused by the engine backfire problem on the intake pipe; sending an alarm message based on the total pressure shock caused by the engine backfire problem on the intake pipe, thereby solving the technical problem in the related art that when an engine backfire problem occurs, natural gas will burn in the intake pipe, causing the intake pipe to crack, thereby making the vehicle unable to drive, and accurately judging the strength change of the intake manifold based on the pressure shock caused by the backfire problem, thereby identifying whether the intake manifold is cracked in advance, and issuing an early alarm to prompt the replacement of the intake manifold, thereby avoiding the vehicle being unable to drive due to the cracking of the intake manifold.

Description

Technical Field

[0001] The present application relates to the field of vehicle safety technology, and in particular to an alarm method, device, equipment and computer-readable storage medium based on engine backfire problems. Background Art

[0002] Backfire in natural gas engines is a common problem. It occurs when high-temperature gases in the combustion chamber flow back into the intake system during the engine's intake process, causing abnormal combustion. This phenomenon can lead to abnormal noise on the intake side and insufficient engine power. Common causes of backfire include a lean mixture, problems with the ignition system, and excessive ignition advance. For example, a lean mixture may be caused by a fault in the oil circuit or intake system, too little fuel from the injector, or too much air intake. Problems with the ignition system can result in insufficient ignition energy or a faulty spark plug. Excessive ignition advance can be caused by factors such as an improper crankshaft sensor gap, a loose crankshaft, or a damaged temperature sensor. Currently, when an engine backfires, natural gas burns in the intake pipe, causing it to crack, preventing the vehicle from driving normally. Summary of the Invention

[0003] The present application provides an alarm method, device, equipment and computer-readable storage medium based on the engine backfire problem, which can solve the technical problem in the prior art that when the engine backfire problem occurs, natural gas will burn in the intake pipe, causing the intake pipe to crack, thereby making the vehicle unable to drive.

[0004] In a first aspect, an embodiment of the present application provides an alarm method based on an engine backfire problem, the alarm method based on an engine backfire problem comprising:

[0005] Determining whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe;

[0006] If it is determined that the engine has a backfire problem, calculating the total pressure impact on the intake pipe caused by the backfire problem of the engine;

[0007] An alarm message is sent according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

[0008] In conjunction with the first aspect, in one embodiment, calculating the total pressure impact on the intake pipe caused by the backfire problem in the engine includes:

[0009] Obtaining the time when the engine backfire problem occurs and the time when the engine backfire problem ends;

[0010] Calculating a duration of the engine backfire problem according to a time when the engine backfire problem occurs and a time when the engine backfire problem ends;

[0011] Calculating a pressure shock on the intake pipe caused by the engine backfire problem based on the obtained intake pipe temperature at the time the engine backfire problem occurs and the intake pipe temperature at a previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by the combustion of the natural gas;

[0012] The total pressure impact on the intake pipe caused by the backfire problem of the engine is calculated according to the duration of the backfire problem of the engine and the pressure impact on the intake pipe caused by the backfire problem of the engine.

[0013] In conjunction with the first aspect, in one embodiment, calculating the pressure shock generated on the intake pipe when the engine backfires based on the obtained temperature value of the intake pipe at the moment the engine backfires and the temperature value of the intake pipe at the previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas, includes:

[0014] Obtaining the temperature value of the intake pipe at the moment when the backfire problem occurs in the engine and the temperature value of the intake pipe at the previous moment;

[0015] Obtain the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion;

[0016] The pressure shock generated on the intake pipe when the engine backfires is generated is calculated based on a first preset formula, the temperature value of the intake pipe at the moment the engine backfires, the temperature value of the intake pipe at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas.

[0017] In conjunction with the first aspect, in one embodiment, calculating the total pressure impact caused by the engine backfire problem on the intake pipe based on the duration of the engine backfire problem and the pressure impact caused by the engine backfire problem on the intake pipe includes:

[0018] Obtaining the duration of the engine backfire problem and the pressure impact on the intake pipe when the engine backfires;

[0019] The total pressure shock caused by the engine backfire problem on the intake pipe is calculated based on a second preset formula, a duration of the engine backfire problem, and a pressure shock caused by the engine backfire problem on the intake pipe.

[0020] In conjunction with the first aspect, in one embodiment, calculating the total pressure impact on the intake pipe caused by the backfire problem in the engine includes:

[0021] Obtaining a temperature value of the intake pipe at each target time, wherein each target time is a time between when the engine backfires and when the engine backfires;

[0022] Obtaining the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas at each target moment;

[0023] Calculating the pressure shock on the intake pipe caused by the engine backfire problem at each target time based on a first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of the natural gas at each target time, the mass of the natural gas in the intake pipe, the volume generated by the combustion of the natural gas, and the temperature value of the intake pipe;

[0024] The total pressure shock caused by the backfire problem of the engine on the intake pipe at each target moment is calculated by accumulating the pressure shock caused by the backfire problem of the engine on the intake pipe.

[0025] In conjunction with the first aspect, in one embodiment, sending an alarm message based on the total pressure impact on the intake pipe caused by the backfire problem of the engine includes:

[0026] comparing the total pressure shock on the intake pipe caused by the backfire problem of the engine with the preset pressure shock;

[0027] If the total pressure shock is greater than or equal to the preset pressure shock, an alarm message is sent, wherein the alarm message includes voice, text, video or light signals.

[0028] In conjunction with the first aspect, in one embodiment, determining whether a backfire problem occurs in the engine of the vehicle based on the collected information about the current vehicle speed and the temperature change of the intake pipe includes:

[0029] Collecting the current vehicle speed and intake pipe temperature change information, wherein the temperature change information includes the temperature value and the time corresponding to the temperature value;

[0030] If the current vehicle speed is greater than a preset speed, determining whether the collected temperature of the intake pipe is greater than a preset temperature;

[0031] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, recording the time duration during which the temperature value of the intake pipe is greater than the preset temperature value according to the time corresponding to the temperature value;

[0032] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value for a period longer than the preset period, it is determined that a backfire problem occurs in the engine.

[0033] In a second aspect, an embodiment of the present application provides an alarm device for an engine backfire problem, the alarm device for an engine backfire problem comprising:

[0034] a determination module, configured to determine whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe;

[0035] a calculation module, configured to calculate a total pressure impact on the intake pipe caused by the backfire problem of the engine if it is determined that the backfire problem occurs in the engine;

[0036] The sending module is used to send an alarm message according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

[0037] In a third aspect, an embodiment of the present application provides an alarm device based on an engine backfire problem, wherein the alarm device based on an engine backfire problem comprises a processor, a memory, and an alarm program based on an engine backfire problem stored on the memory and executable by the processor, wherein when the alarm program based on an engine backfire problem is executed by the processor, the steps of the alarm method based on an engine backfire problem as described above are implemented.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which an alarm program based on an engine backfire problem is stored. When the alarm program based on an engine backfire problem is executed by a processor, the steps of the alarm method based on an engine backfire problem as described above are implemented.

[0039] The beneficial effects of the technical solutions provided in the embodiments of the present application include:

[0040] By determining whether the engine of the vehicle has a backfire problem based on the collected information of the current vehicle speed and the temperature change of the intake pipe; if it is determined that the engine has a backfire problem, calculating the total pressure impact of the engine backfire problem on the intake pipe; sending an alarm message based on the total pressure impact of the engine backfire problem on the intake pipe, which solves the technical problem in the related technology that when the engine backfire problem occurs, natural gas will burn in the intake pipe, causing the intake pipe to crack, thereby making the vehicle unable to drive. It can accurately judge the strength change of the intake manifold based on the pressure shock caused by the backfire problem, thereby identifying whether the intake manifold is cracked in advance, and issuing an alarm to prompt the replacement of the intake manifold in advance, to avoid the vehicle being unable to drive due to the cracking of the intake manifold. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] Figure 1 This is a flow chart of the first embodiment of the alarm method based on the engine backfire problem of this application;

[0042] Figure 2 For this application Figure 1 Detailed flow chart of step S20;

[0043] Figure 3 For this application Figure 1 Detailed flow chart of step S20;

[0044] Figure 4 This is a functional module diagram of an embodiment of an alarm device for engine backfire problem according to the present application;

[0045] Figure 5 This is a schematic diagram of the hardware structure of the alarm device based on the engine backfire problem involved in the embodiment of the present application. DETAILED DESCRIPTION

[0046] In order to enable those skilled in the art to better understand the present invention, the following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this application.

[0047] First, some technical terms in this application are explained to facilitate those skilled in the art to understand this application.

[0048] In order to make the objectives, technical solutions and advantages of this application clearer, the implementation methods of this application will be further described in detail below with reference to the accompanying drawings.

[0049] In a first aspect, an embodiment of the present application provides an alarm method based on an engine backfire problem.

[0050] In one embodiment, referring to Figure 1 , Figure 1 This is a flow chart of the first embodiment of the alarm method based on the engine backfire problem of this application. Figure 1 As shown, the alarm method based on the engine backfire problem includes:

[0051] Step S10: determining whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe;

[0052] Exemplarily, the current vehicle speed and intake manifold temperature change information are collected, where the intake manifold temperature change information is the intake manifold temperature change value. The collected current vehicle speed is compared with a preset speed. If the current vehicle speed is greater than the preset speed, the intake manifold temperature change rate is obtained based on the intake manifold temperature change value. This intake manifold temperature change rate is then used to determine whether the vehicle's engine is experiencing backfire. For example, the intake manifold temperature change rate is compared with the preset temperature change rate. If the intake manifold temperature change rate is greater than the preset temperature change rate, it is determined that the vehicle's engine is experiencing backfire.

[0053] The collected current vehicle speed is compared with a preset speed. If the current vehicle speed is less than or equal to the preset speed, the intake pipe temperature change rate is obtained based on the intake pipe temperature change value, and the intake pipe temperature change rate is used to determine whether the vehicle's engine has a backfire problem. For example, the intake pipe temperature change rate is compared with a preset temperature change rate. If the intake pipe temperature change rate is less than or equal to the preset temperature change rate, it is determined that the vehicle's engine does not have a backfire problem.

[0054] Specifically, the method of determining whether a backfire problem occurs in the engine of the vehicle based on the collected information about the speed of the current vehicle and the temperature change of the intake pipe includes: collecting the speed of the current vehicle and the temperature change information of the intake pipe, wherein the temperature change information includes a temperature value and a time corresponding to the temperature value; if the collected speed of the current vehicle is greater than a preset speed, determining whether the collected temperature value of the intake pipe is greater than a preset temperature value; if it is determined that the temperature value of the intake pipe is greater than the preset temperature value, recording a time period during which the temperature value of the intake pipe is greater than the preset temperature value based on the time period corresponding to the temperature value; if it is determined that the time period during which the temperature value of the intake pipe is greater than the preset temperature value is greater than the preset time period, determining that a backfire problem occurs in the engine.

[0055] Exemplarily, the current vehicle speed and intake manifold temperature change information are collected, where the temperature change information includes the temperature value and the time corresponding to the temperature value. The collected current vehicle speed is compared with a preset speed. If the current vehicle speed is greater than the preset speed, the collected intake manifold temperature value is compared with the preset temperature value. If the collected intake manifold temperature value is greater than the preset temperature value, the time corresponding to the temperature value is obtained, and the duration of the intake manifold temperature value exceeding the preset temperature value at each moment is recorded starting from that time. The obtained duration is compared with the preset duration. If the duration is greater than the preset duration, it is determined that the engine is experiencing backfire.

[0056] The current vehicle speed is compared with a preset speed. If the current vehicle speed is less than or equal to the preset speed, the engine is determined to be free of backfire. Alternatively, the current vehicle speed is compared with a preset speed. If the current vehicle speed is greater than the preset speed, the intake pipe temperature is compared with a preset temperature. If the intake pipe temperature is less than or equal to the preset temperature, the engine is determined to be free of backfire. Alternatively, the current vehicle speed is compared with a preset speed. If the current vehicle speed is greater than the preset speed, the intake pipe temperature is compared with a preset temperature. If the intake pipe temperature is greater than the preset temperature, the time corresponding to the temperature is obtained, and starting from that time, the duration that the intake pipe temperature is greater than the preset temperature at each time is recorded. The obtained duration is compared with the preset duration. If the duration is less than or equal to the preset duration, it is determined that the engine does not have a backfire problem.

[0057] Step S20: If it is determined that the engine has a backfire problem, then calculating the total pressure impact on the intake pipe caused by the backfire problem of the engine;

[0058] Exemplarily, if it is determined that the engine has a backfire problem, the duration of the backfire problem and the pressure shock generated per second in the intake manifold when the backfire problem is detected by the preset sensor are obtained. Based on the duration of the backfire problem and the pressure shock generated per second in the intake manifold when the backfire problem occurs, the total pressure shock generated by the backfire problem in the intake manifold is calculated.

[0059] Step S30: Sending an alarm message according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

[0060] Exemplarily, when the total pressure shock on the intake pipe caused by the backfire problem of the engine is obtained, the total pressure shock on the intake pipe caused by the backfire problem of the engine is compared with the preset pressure shock; if the total pressure shock is greater than or equal to the preset pressure shock, an alarm message is sent, wherein the alarm message includes voice, text, video or light signals.

[0061] In this embodiment, whether the engine of the vehicle has a backfire problem is determined based on the collected information of the current vehicle speed and the temperature change of the intake pipe; if it is determined that the engine has a backfire problem, the total pressure shock caused by the engine backfire problem on the intake pipe is calculated; based on the total pressure shock caused by the engine backfire problem on the intake pipe, an alarm message is sent, which solves the technical problem in the related art that when the engine backfire problem occurs, natural gas will burn in the intake pipe, causing the intake pipe to crack, thereby making the vehicle unable to drive. It can accurately judge the strength change of the intake manifold based on the pressure shock caused by the backfire problem, thereby identifying whether the intake manifold is cracked in advance, and issuing an early alarm to prompt the replacement of the intake manifold, thereby avoiding the vehicle being unable to drive due to the cracking of the intake manifold.

[0062] In one embodiment, referring to Figure 2 , Figure 2 For this application Figure 1 Detailed flow chart of step S20 in FIG. Figure 2 As shown, the detailed steps of step S20 include:

[0063] Step S21: obtaining the time when the engine backfire problem occurs and the time when the engine backfire problem ends;

[0064] Exemplarily, the occurrence time of the engine backfire problem and the end time of the engine backfire problem are obtained. For example, when it is determined that the vehicle's engine backfires, the current time is used as the occurrence time of the engine backfire problem. After the vehicle's engine backfire problem is determined to have occurred, whether the vehicle's engine backfires has occurred is determined in real time based on the collected information about the current vehicle speed and intake pipe temperature change. If it is determined that the engine backfires has not occurred, the current time is used as the end time of the engine backfire problem.

[0065] Step S22: Calculating the duration of the engine backfire problem according to the time when the engine backfire problem occurs and the time when the engine backfire problem ends;

[0066] Exemplarily, the duration of the engine backfire problem is calculated by subtracting the occurrence time of the engine backfire problem from the end time of the engine backfire problem.

[0067] Step S23: Calculating the pressure shock on the intake pipe caused by the engine backfire problem based on the obtained intake pipe temperature value at the moment the engine backfire problem occurs and the intake pipe temperature value at the previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by the combustion of the natural gas;

[0068] Exemplarily, the temperature value of the intake pipe at the moment when the engine backfires and the temperature value of the intake pipe at the previous moment are obtained; the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume generated after the natural gas is burned are obtained; and the pressure shock generated on the intake pipe when the engine backfires is calculated according to a first preset formula P(i)=K*c*m*(T(i)-T(i-1)) / V, wherein T(i) is the temperature value of the intake pipe at the moment when the engine backfires, T(i-1) is the temperature value of the intake pipe at the previous moment, c is the heat capacity of natural gas, m is the mass of natural gas in the intake pipe, v is the volume generated after the natural gas is burned, and P(i) is the pressure shock generated on the intake pipe when the engine backfires.

[0069] Step S24: Calculating the total pressure shock caused by the engine backfire problem on the intake pipe according to the duration of the engine backfire problem and the pressure shock caused by the engine backfire problem on the intake pipe.

[0070] Exemplarily, after obtaining the pressure shock P(i) generated on the intake pipe when the engine backfires and the duration of the engine backfire, the pressure shock P(i) generated on the intake pipe when the engine backfires and the duration of the engine backfire are multiplied by the second preset formula to calculate the total pressure shock P generated on the intake pipe when the engine backfires.

[0071] In this embodiment, by determining that a backfire problem occurs in the engine, the total pressure shock caused by the backfire problem in the engine on the intake pipe is calculated. Based on the temperature value of the intake pipe at the moment the backfire problem occurs in the engine and the temperature value of the intake pipe at the previous moment, as well as the heat capacity of the natural gas, the mass of the natural gas in the intake pipe and the volume generated after the combustion of the natural gas, the pressure shock caused by the backfire problem in the engine is calculated. Based on the duration of the backfire problem in the engine and the pressure shock caused by the backfire problem in the engine, the total pressure shock caused by the backfire problem in the engine on the intake pipe is calculated. The impact of the total pressure shock caused by the backfire problem on the intake pipe on the intake pipe is determined in advance, thereby preventing the intake pipe from rupturing in advance.

[0072] In one embodiment, referring to Figure 3 , Figure 3 For this application Figure 1 Detailed flow chart of step S20 in FIG. Figure 3 As shown, the detailed steps of step S20 further include:

[0073] Step S25: obtaining the temperature value of the intake pipe at each target time, wherein each target time is a time between when the engine backfires and when the engine backfires;

[0074] Exemplarily, when it is determined that the engine has a backfire problem, the temperature value of the intake pipe at each target time is recorded, and each target time is the time between the occurrence of the engine backfire problem and the end of the engine backfire problem.

[0075] Step S26: Obtaining the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated after the natural gas is burned at each target moment;

[0076] Step S27: Calculating the pressure shock on the intake pipe caused by the engine backfire problem at each target time based on a first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of the natural gas at each target time, the mass of the natural gas in the intake pipe, the volume generated by the combustion of the natural gas, and the temperature value of the intake pipe;

[0077] Exemplarily, the pressure shock on the intake pipe when the engine backfires is calculated according to a first preset formula: P(i) = K*c*m*(T(i) - T(i-1)) / V, where T(i) is the temperature of the intake pipe at the first moment, T(i-1) is the temperature of the intake pipe at the second moment, c is the heat capacity of the natural gas at the first moment, m is the mass of the natural gas in the intake pipe at the first moment, v is the volume of the natural gas after combustion at the first moment, and P(i) is the pressure shock on the intake pipe at the first target moment when the engine backfires. Calculations are performed sequentially to calculate the pressure shock on the intake pipe at each target moment when the engine backfires.

[0078] Step S28: Calculating the total pressure shock caused by the engine backfire problem on the intake pipe by accumulating the pressure shock caused by the engine backfire problem at each target moment.

[0079] Exemplarily, the total pressure shock caused by the backfire problem of the engine on the intake pipe at each target moment is calculated by accumulating the pressure shock caused by the backfire problem of the engine on the intake pipe.

[0080] In this embodiment, the pressure shock caused by the engine backfire problem on the intake pipe at each target moment is calculated based on the first preset formula, the temperature value of the intake pipe at each target moment, the heat capacity of the natural gas at each target moment, the mass of the natural gas in the intake pipe, the volume generated after the natural gas is burned, and the temperature value of the intake pipe. The total pressure shock caused by the engine backfire problem on the intake pipe at each target moment is calculated by accumulating the pressure shocks caused by the engine backfire problem at each target moment, and the influence of the total pressure shock caused by the engine backfire problem on the intake pipe on the intake pipe is determined in advance, so as to prevent the intake pipe from rupture in advance.

[0081] On the second aspect, an embodiment of the present application also provides an alarm device based on the engine backfire problem.

[0082] In one embodiment, referring to Figure 4 , Figure 4 This is a functional module diagram of an embodiment of the alarm device for engine backfire problem in this application. Figure 4 As shown, the alarm device based on the engine backfire problem includes:

[0083] A determination module 10 is configured to determine whether a backfire problem occurs in the engine of the vehicle based on the collected information about the current vehicle speed and the temperature change of the intake pipe;

[0084] a calculation module 20 for calculating a total pressure impact on the intake pipe caused by the engine backfire problem if it is determined that the engine backfire problem occurs;

[0085] The sending module 30 is used to send an alarm message according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

[0086] Furthermore, in one embodiment, the calculation module 20 is configured to:

[0087] Obtaining the time when the engine backfire problem occurs and the time when the engine backfire problem ends;

[0088] Calculating a duration of the engine backfire problem according to a time when the engine backfire problem occurs and a time when the engine backfire problem ends;

[0089] Calculating a pressure shock on the intake pipe caused by the engine backfire problem based on the obtained intake pipe temperature at the time the engine backfire problem occurs and the intake pipe temperature at a previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by the combustion of the natural gas;

[0090] The total pressure impact on the intake pipe caused by the backfire problem of the engine is calculated according to the duration of the backfire problem of the engine and the pressure impact on the intake pipe caused by the backfire problem of the engine.

[0091] Furthermore, in one embodiment, the alarm device based on the engine backfire problem also includes a new module for:

[0092] Obtaining the temperature value of the intake pipe at the moment when the backfire problem occurs in the engine and the temperature value of the intake pipe at the previous moment;

[0093] Obtain the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion;

[0094] The pressure shock generated on the intake pipe when the engine backfires is generated is calculated based on a first preset formula, the temperature value of the intake pipe at the moment the engine backfires, the temperature value of the intake pipe at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas.

[0095] Furthermore, in one embodiment, the alarm device based on the engine backfire problem also includes a new module for:

[0096] Obtaining the duration of the engine backfire problem and the pressure impact on the intake pipe when the engine backfires;

[0097] The total pressure shock caused by the engine backfire problem on the intake pipe is calculated based on a second preset formula, a duration of the engine backfire problem, and a pressure shock caused by the engine backfire problem on the intake pipe.

[0098] Furthermore, in one embodiment, the calculation module 20 is configured to:

[0099] Obtaining a temperature value of the intake pipe at each target time, wherein each target time is a time between when the engine backfires and when the engine backfires;

[0100] Obtaining the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas at each target moment;

[0101] Calculating the pressure shock on the intake pipe caused by the engine backfire problem at each target time based on a first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of the natural gas at each target time, the mass of the natural gas in the intake pipe, the volume generated by the combustion of the natural gas, and the temperature value of the intake pipe;

[0102] The total pressure shock caused by the backfire problem of the engine on the intake pipe at each target moment is calculated by accumulating the pressure shock caused by the backfire problem of the engine on the intake pipe.

[0103] Furthermore, in one embodiment, the sending module 30 is configured to:

[0104] comparing the total pressure shock on the intake pipe caused by the backfire problem of the engine with the preset pressure shock;

[0105] If the total pressure shock is greater than or equal to the preset pressure shock, an alarm message is sent, wherein the alarm message includes voice, text, video or light signals.

[0106] Furthermore, in one embodiment, the determination module 10 is configured to:

[0107] Collecting the current vehicle speed and intake pipe temperature change information, wherein the temperature change information includes the temperature value and the time corresponding to the temperature value;

[0108] If the current vehicle speed is greater than a preset speed, determining whether the collected temperature of the intake pipe is greater than a preset temperature;

[0109] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, recording the time duration during which the temperature value of the intake pipe is greater than the preset temperature value according to the time corresponding to the temperature value;

[0110] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value for a period longer than the preset period, it is determined that a backfire problem occurs in the engine.

[0111] Among them, the functional implementation of each module in the above-mentioned alarm device based on engine backfire problem corresponds to the various steps in the above-mentioned alarm method embodiment based on engine backfire problem, and its functions and implementation processes will not be repeated here one by one.

[0112] On the third aspect, an embodiment of the present application provides an alarm device based on the engine backfire problem. The alarm device based on the engine backfire problem can be a personal computer (PC), a laptop computer, a server, or other device with data processing capabilities.

[0113] Reference Figure 5 , Figure 5 Schematic diagram of the hardware structure of the engine backfire alarm device involved in the embodiment of the present application. In the embodiment of the present application, the engine backfire alarm device may include a processor, a memory, a communication interface and a communication bus.

[0114] The communication bus may be of any type and is used to interconnect the processor, memory, and communication interface.

[0115] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces. These interfaces interconnect components within the engine backfire alarm system, as well as interfaces that connect the engine backfire alarm system to other devices (such as other computing devices or user devices). Physical interfaces can include Ethernet, fiber optic, and ATM interfaces; user devices can include displays and keyboards.

[0116] The memory can be various types of storage media, such as random access memory (RAM), read-only memory (ROM), non-volatile RAM (NVRAM), flash memory, optical storage, hard disk, programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), etc.

[0117] The processor can be a general-purpose processor that can invoke an engine backfire alarm program stored in a memory and execute the engine backfire alarm method provided in the embodiments of the present application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the engine backfire alarm program is invoked can be referenced from the various embodiments of the engine backfire alarm method of the present application and will not be further described here.

[0118] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation to the present application and may include more or fewer components than shown in the figure, or a combination of certain components, or a different arrangement of components.

[0119] In a fourth aspect, an embodiment of the present application also provides a computer-readable storage medium.

[0120] The computer-readable storage medium of the present application stores an alarm program based on the engine backfire problem, wherein when the alarm program based on the engine backfire problem is executed by the processor, the steps of the alarm method based on the engine backfire problem as described above are implemented.

[0121] Among them, the method implemented when the alarm program based on the engine backfire problem is executed can refer to the various embodiments of the alarm method based on the engine backfire problem in this application, and will not be repeated here.

[0122] It should be noted that the serial numbers of the above-mentioned embodiments of the present application are for description only and do not represent the advantages or disadvantages of the embodiments.

[0123] The terms "including" and "having" and any variations thereof in the specification and claims of this application and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally includes steps or units that are not listed, or optionally includes other steps or units inherent to these processes, methods, products or devices. The terms "first", "second" and "third" are used to distinguish different objects, etc., and do not represent a sequence, nor do they limit the "first", "second" and "third" to different types.

[0124] In the description of the embodiments of this application, the words "exemplary," "for example," or "for example" are used to indicate examples, illustrations, or descriptions. Any embodiment or design described as "exemplary," "for example," or "for example" in the embodiments of this application should not be construed as being preferred or advantageous over other embodiments or designs. Rather, the use of words such as "exemplary," "for example," or "for example" is intended to present the relevant concepts in a concrete manner.

[0125] In the description of the embodiments of the present application, unless otherwise specified, “ / ” means or, for example, A / B can mean A or B; “and / or” in the text is merely a description of the association relationship of associated objects, indicating that three relationships may exist, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of the present application, “multiple” refers to two or more than two.

[0126] In some processes described in the embodiments of the present application, multiple operations or steps are included that appear in a specific order. However, it should be understood that these operations or steps may not be performed in the order in which they appear in the embodiments of the present application or may be performed in parallel. The sequence numbers of the operations are only used to distinguish between different operations, and the sequence numbers themselves do not represent any order of execution. In addition, these processes may include more or fewer operations, and these operations or steps may be performed in sequence or in parallel, and these operations or steps may be combined.

[0127] Through the description of the above implementation methods, those skilled in the art can clearly understand that the above-mentioned embodiment methods can be implemented by means of software plus the necessary general hardware platform, of course, it can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present application, or the part that contributes to the prior art, can be embodied in the form of a software product, which is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes a number of instructions for enabling a terminal device to execute the methods described in each embodiment of the present application.

[0128] The above are only preferred embodiments of the present application and do not limit the patent scope of the present application. Any equivalent structure or equivalent process transformation made using the contents of the present application specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. An alarm method based on engine backfire problem, characterized in that: The alarm method based on the engine backfire problem includes: Determining whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe; If it is determined that the engine has a backfire problem, calculating the total pressure impact on the intake pipe caused by the backfire problem of the engine; The calculating of the total pressure impact on the intake pipe caused by the backfire problem of the engine includes: Obtaining the time when the engine backfire problem occurs and the time when the engine backfire problem ends; Calculating a duration of the engine backfire problem according to a time when the engine backfire problem occurs and a time when the engine backfire problem ends; Calculating a pressure shock on the intake pipe caused by the engine backfire problem based on the obtained intake pipe temperature at the time the engine backfire problem occurs and the intake pipe temperature at a previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by the combustion of the natural gas; Calculating a total pressure shock caused by the engine backfire problem on the intake pipe based on a duration of the engine backfire problem and a pressure shock caused by the engine backfire problem on the intake pipe; An alarm message is sent according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

2. The alarm method based on engine backfire problem according to claim 1, characterized in that: The calculating, based on the obtained temperature value of the intake pipe at the moment when the engine backfires and the temperature value of the intake pipe at the previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas, a pressure shock generated on the intake pipe when the engine backfires, includes: Obtaining the temperature value of the intake pipe at the moment when the backfire problem occurs in the engine and the temperature value of the intake pipe at the previous moment; Obtain the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion; The pressure shock generated on the intake pipe when the engine backfires is generated is calculated based on a first preset formula, the temperature value of the intake pipe at the moment the engine backfires, the temperature value of the intake pipe at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas.

3. The alarm method based on engine backfire problem according to claim 1, characterized in that: Calculating the total pressure impact caused by the engine backfire problem on the intake pipe based on the duration of the engine backfire problem and the pressure impact caused by the engine backfire problem on the intake pipe includes: Obtaining the duration of the engine backfire problem and the pressure impact on the intake pipe when the engine backfires; The total pressure shock caused by the engine backfire problem on the intake pipe is calculated based on a second preset formula, a duration of the engine backfire problem, and a pressure shock caused by the engine backfire problem on the intake pipe.

4. The alarm method based on engine backfire problem according to claim 1, characterized in that: The calculating of the total pressure impact on the intake pipe caused by the backfire problem of the engine includes: Obtaining a temperature value of the intake pipe at each target time, wherein each target time is a time between when the engine backfires and when the engine backfires; Obtaining the heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by combustion of the natural gas at each target moment; Calculating the pressure shock on the intake pipe caused by the engine backfire problem at each target time based on a first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of the natural gas at each target time, the mass of the natural gas in the intake pipe, the volume generated by the combustion of the natural gas, and the temperature value of the intake pipe; The total pressure shock caused by the backfire problem of the engine on the intake pipe at each target moment is calculated by accumulating the pressure shock caused by the backfire problem of the engine on the intake pipe.

5. The alarm method based on engine backfire problem according to claim 1, characterized in that: The sending of alarm information according to the total pressure impact on the intake pipe caused by the backfire problem of the engine includes: comparing the total pressure shock on the intake pipe caused by the backfire problem of the engine with the preset pressure shock; If the total pressure shock is greater than or equal to the preset pressure shock, an alarm message is sent, wherein the alarm message includes voice, text, video or light signals.

6. The alarm method based on engine backfire problem according to claim 1, characterized in that: The determining whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe includes: Collecting the current vehicle speed and intake pipe temperature change information, wherein the temperature change information includes the temperature value and the time corresponding to the temperature value; If the current vehicle speed is greater than a preset speed, determining whether the collected temperature of the intake pipe is greater than a preset temperature; If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, recording the time duration during which the temperature value of the intake pipe is greater than the preset temperature value according to the time corresponding to the temperature value; If it is determined that the temperature value of the intake pipe is greater than the preset temperature value for a period longer than the preset period, it is determined that a backfire problem occurs in the engine.

7. An alarm device based on engine backfire problem, characterized in that: The alarm device based on the engine backfire problem includes: a determination module, configured to determine whether a backfire problem occurs in the engine of the vehicle based on the collected information of the current vehicle speed and the temperature change of the intake pipe; a calculation module, configured to calculate a total pressure impact on the intake pipe caused by the backfire problem of the engine if it is determined that the backfire problem occurs in the engine; The calculating of the total pressure impact on the intake pipe caused by the backfire problem of the engine includes: Obtaining the time when the engine backfire problem occurs and the time when the engine backfire problem ends; Calculating a duration of the engine backfire problem according to a time when the engine backfire problem occurs and a time when the engine backfire problem ends; Calculating a pressure shock on the intake pipe caused by the engine backfire problem based on the obtained intake pipe temperature at the time the engine backfire problem occurs and the intake pipe temperature at a previous moment, as well as the obtained heat capacity of the natural gas, the mass of the natural gas in the intake pipe, and the volume generated by the combustion of the natural gas; Calculating a total pressure shock caused by the engine backfire problem on the intake pipe based on a duration of the engine backfire problem and a pressure shock caused by the engine backfire problem on the intake pipe; The sending module is used to send an alarm message according to the total pressure impact on the intake pipe caused by the backfire problem of the engine.

8. An alarm device based on engine backfire problem, characterized in that: The alarm device based on the engine backfire problem includes a processor, a memory, and an alarm program based on the engine backfire problem stored in the memory and executable by the processor. When the alarm program based on the engine backfire problem is executed by the processor, the steps of the alarm method based on the engine backfire problem according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores an alarm program based on an engine backfire problem, wherein when the alarm program based on an engine backfire problem is executed by a processor, the steps of the alarm method based on an engine backfire problem according to any one of claims 1 to 6 are implemented.

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