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

Abstract

The invention discloses an alarm method, device and equipment based on an engine backfire problem and a computer readable storage medium, and the method comprises the steps: determining whether an engine of a vehicle has a backfire problem or not according to the collected vehicle speed of the current vehicle and the temperature change information of an air inlet pipe; if it is determined that the engine has the tempering problem, total pressure impact generated by the tempering problem of the engine on the air inlet pipe is calculated; and alarm information is sent according to the total pressure impact generated on the air inlet pipe by the backfire problem of the engine, so that the technical problem that in the prior art, when the backfire problem of the engine occurs, natural gas burns in the air inlet pipe, so that the air inlet pipe cracks, and a vehicle cannot run is solved; the strength change of the intake manifold is accurately judged based on the pressure impact generated by the tempering problem, so that whether the intake manifold is cracked or not is recognized in advance, an alarm is given in advance to prompt replacement of the intake manifold, and the situation that a vehicle cannot run due to cracking of the intake manifold is avoided.

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] The backfire problem of natural gas engines is a common fault phenomenon. It refers to the abnormal combustion caused by the high-temperature gas in the combustion chamber flowing back into the intake system during the intake process of the engine. This phenomenon will cause abnormal noise on the intake side and insufficient engine power. Common causes of backfire include too lean mixture, problems with the ignition system, and too large ignition advance angle. For example, too lean mixture may be due to a fault in the oil circuit or intake system, too little fuel injection from the injector, or too much intake. The problem with the ignition system is insufficient ignition energy or spark plug failure. The excessive ignition advance angle is caused by reasons such as inappropriate crankshaft sensor gap, looseness, or damage to the temperature sensor. At present, when the engine backfires, natural gas will burn in the intake pipe, causing the intake pipe to crack, so that the vehicle cannot drive 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, then 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 combination with the first aspect, in one implementation, calculating the total pressure impact on the intake pipe caused by the backfire problem of the engine includes:

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

[0010] 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;

[0011] Calculate the pressure shock on the intake pipe when the engine has a backfire problem based on the obtained temperature value of the intake pipe at the moment when the backfire problem occurs and the temperature value of the intake pipe at the last 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 after the natural gas is burned;

[0012] According to the duration of the backfire problem of the engine and the pressure impact on the intake pipe when the backfire problem occurs in the engine, the total pressure impact on the intake pipe caused by the backfire problem of the engine is calculated.

[0013] In combination with the first aspect, in one implementation, the pressure shock generated on the intake pipe when the engine has a backfire problem is calculated based on the temperature value of the intake pipe at the moment when the engine has a backfire problem 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 natural gas is burned, including:

[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 last 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 on the intake pipe when the engine has a backfire problem is calculated based on a first preset formula, the temperature value of the intake pipe at the moment when the engine has a backfire problem and 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 after the natural gas is burned.

[0017] In combination with the first aspect, in one implementation, the total pressure shock caused by the backfire problem of the engine on the intake pipe is calculated according to the duration of the backfire problem of the engine and the pressure shock caused by the backfire problem of the engine on the intake pipe, including:

[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 backfire problem of the engine on the intake pipe is calculated based on the second preset formula, the duration of the backfire problem of the engine and the pressure shock caused to the intake pipe when the backfire problem occurs in the engine.

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

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

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

[0023] Calculate the pressure impact on the intake pipe caused by the backfire problem of the engine at each target time according to the 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 after the natural gas is burned, 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 combination with the first aspect, in one implementation, sending alarm information according to the total pressure impact on the intake pipe caused by the backfire problem of the engine includes:

[0026] Comparing the total pressure shock caused by the backfire problem of the engine on the intake pipe 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 combination with the first aspect, in one implementation, 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 the temperature change information of the intake pipe, 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 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, then recording the time duration for 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 time length during which the temperature value of the intake pipe is greater than the preset temperature value is greater than the preset time length, 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 based on an engine backfire problem, and the alarm device based on an engine backfire problem includes:

[0034] A determination module, used to determine whether a backfire problem occurs in the engine of the vehicle according to the collected information of the vehicle speed and the temperature change of the intake pipe;

[0035] A calculation module, for calculating the 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 in the memory and executable by the processor, 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.

[0038] In a fourth aspect, an embodiment of the present application provides a computer-readable storage medium, on which is stored 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 as described above are implemented.

[0039] The beneficial effects brought by the technical solution 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 on 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 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, thereby solving 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, and accurately judging the strength change of the intake manifold based on the pressure shock caused by the backfire problem, thereby identifying in advance whether the intake manifold is cracked, and issuing an alarm in advance to prompt the replacement of the intake manifold, thereby avoiding 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 the present 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 solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, not all of the embodiments. Based on the embodiments in the present application, 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 the present application are explained to facilitate those skilled in the art to understand the present application.

[0048] In order to make the objectives, technical solutions and advantages of the present application clearer, the implementation methods of the present 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 according to the collected information of the current vehicle speed and the temperature change of the intake pipe;

[0052] Exemplarily, the speed of the current vehicle and the temperature change information of the intake pipe are collected, wherein the temperature change information of the intake pipe is the temperature change value of the intake pipe. The collected speed of the current vehicle is compared with the preset speed. If the speed of the current vehicle is greater than the preset speed, the temperature change rate of the intake pipe is obtained according to the temperature change value of the intake pipe, and whether the engine of the vehicle has a backfire problem is determined by the temperature change rate of the intake pipe. For example, the temperature change rate of the intake pipe is compared with the preset temperature change rate. If the temperature change rate of the intake pipe is greater than the preset temperature change rate, it is determined that the engine of the vehicle has a backfire problem.

[0053] The collected current vehicle speed is compared with the preset vehicle speed. If the current vehicle speed is less than or equal to the preset vehicle speed, the temperature change rate of the intake pipe is obtained according to the temperature change value of the intake pipe, and whether the vehicle engine has a backfire problem is determined by the temperature change rate of the intake pipe. For example, the temperature change rate of the intake pipe is compared with the preset temperature change rate. If the temperature change rate of the intake pipe is less than or equal to the preset temperature change rate, it is determined that the vehicle engine has no backfire problem.

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

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

[0056] The speed of the current vehicle collected is compared with the preset speed. If the speed of the current vehicle is less than or equal to the preset speed, it is determined that the engine has no backfire problem. Alternatively, the speed of the current vehicle collected is compared with the preset speed. If the speed of the current vehicle is greater than the preset speed, the temperature value of the intake pipe collected is compared with the preset temperature value. If the temperature value of the intake pipe collected is less than or equal to the preset temperature value, it is determined that the engine has no backfire problem. Alternatively, the speed of the current vehicle collected is compared with the preset speed. If the speed of the current vehicle is greater than the preset speed, the temperature value of the intake pipe collected is compared with the preset temperature value. If the temperature value of the intake pipe collected is greater than the preset temperature value, the time corresponding to the temperature value is obtained, and the duration of the temperature value of the intake pipe at each time greater than the preset temperature value is recorded from that time. The acquired 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 has no backfire problem.

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

[0058] Exemplarily, if it is determined that the engine has a backfire problem, the duration of the engine backfire problem and the pressure shock generated on the intake pipe per second when the engine backfire problem is detected by the preset sensor are obtained. Based on the duration of the engine backfire problem and the pressure shock generated on the intake pipe per second when the engine backfire problem occurs, the total pressure shock generated on the intake pipe by the engine backfire problem 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 the present 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 backfire problem of the engine on the intake pipe is calculated; based on the total pressure shock caused by the backfire problem of the engine on the intake pipe, an alarm message is sent, 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, and accurately judges the strength change of the intake manifold based on the pressure shock caused by the backfire problem, thereby identifying in advance whether the intake manifold is cracked, 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 engine of the vehicle has a backfire problem, the current time is used as the occurrence time of the engine backfire problem. After it is determined that the engine of the vehicle has a backfire problem, it is determined in real time whether the engine of the vehicle has a backfire problem based on the collected vehicle speed and intake pipe temperature change information. When it is determined that the engine has not a backfire problem, 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 time when the engine backfire problem occurs from the time when the engine backfire problem ends.

[0067] Step S23: Calculate the pressure shock on the intake pipe when the engine has a backfire problem based on the obtained temperature value of the intake pipe at the moment when the backfire problem occurs 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 after the natural gas is burned;

[0068] Exemplarily, the temperature value of the intake pipe at the moment when the engine has a backfire problem 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; according to the first preset formula P(i)=K*c*m*(T(i)-T(i-1)) / V, the pressure shock generated on the intake pipe when the engine has a backfire problem is calculated, wherein T(i) is the temperature value of the intake pipe at the moment when the engine has a backfire problem, 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 has a backfire problem.

[0069] Step S24: Calculate 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 when 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 influence of the total pressure shock caused by the backfire problem in the engine 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 also include:

[0073] Step S25: obtaining the temperature value of the intake pipe at each target time, wherein each target time is the 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 backfire problem in the engine and the end of the backfire problem in the engine.

[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 combustion of the natural gas at each target moment;

[0076] Step S27: Calculate the pressure impact on the intake pipe caused by the backfire problem of the engine at each target time according to the 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 after the natural gas is burned, and the temperature value of the intake pipe;

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

[0078] Step S28: Calculate 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 time.

[0079] Exemplarily, the total pressure shock caused by the backfire problem of the engine on the intake pipe at each target time 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 backfire problem of the engine 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 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 is calculated by accumulating the pressure shock caused by the backfire problem of the engine at each target moment, and the influence of the total pressure shock caused by the backfire problem of the engine on the intake pipe on the intake pipe is determined in advance, so as to prevent the intake pipe from rupture in advance.

[0081] In a 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] The determination module 10 is used to determine whether the engine of the vehicle has a backfire problem according to the collected information of the vehicle speed and the temperature change of the intake pipe;

[0084] A calculation module 20, for calculating the 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;

[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 used to:

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

[0088] 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;

[0089] Calculate the pressure shock on the intake pipe when the engine has a backfire problem based on the obtained temperature value of the intake pipe at the moment when the backfire problem occurs and the temperature value of the intake pipe at the last 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 after the natural gas is burned;

[0090] According to the duration of the backfire problem of the engine and the pressure impact on the intake pipe when the backfire problem occurs in the engine, the total pressure impact on the intake pipe caused by the backfire problem of the engine is calculated.

[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 last 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 on the intake pipe when the engine has a backfire problem is calculated based on a first preset formula, the temperature value of the intake pipe at the moment when the engine has a backfire problem and 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 after the natural gas is burned.

[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 backfire problem of the engine on the intake pipe is calculated based on the second preset formula, the duration of the backfire problem of the engine and the pressure shock caused to the intake pipe when the backfire problem occurs in the engine.

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

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

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

[0101] Calculate the pressure impact on the intake pipe caused by the backfire problem of the engine at each target time according to the 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 after the natural gas is burned, 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 used to:

[0104] Comparing the total pressure shock caused by the backfire problem of the engine on the intake pipe 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 used to:

[0107] Collecting the current vehicle speed and the temperature change information of the intake pipe, 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 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, then recording the time duration for 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 time length during which the temperature value of the intake pipe is greater than the preset temperature value is greater than the preset time length, 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 The hardware structure diagram of the alarm device based on engine backfire problem involved in the embodiment of the present application is shown in FIG. In the embodiment of the present application, the alarm device based on engine backfire problem 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, the memory, and the communication interface.

[0115] The communication interface includes an input / output (I / O) interface, a physical interface, and a logical interface, which are used to interconnect the components inside the alarm device based on the engine backfire problem, and an interface used to interconnect the alarm device based on the engine backfire problem with other devices (such as other computing devices or user devices). The physical interface can be an Ethernet interface, an optical fiber interface, an ATM interface, etc.; the user device can be a display, a keyboard, etc.

[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 may be a general-purpose processor, which may call the alarm program based on the engine backfire problem stored in the memory and execute the alarm method based on the engine backfire problem provided in the embodiment of the present application. For example, the general-purpose processor may be a central processing unit (CPU). The method executed when the alarm program based on the engine backfire problem is called may refer to the various embodiments of the alarm method based on the engine backfire problem of the present application, which will not be described in detail here.

[0118] Those skilled in the art will understand that Figure 5 The hardware structure shown in the figure does not constitute a limitation on the present application, and may include more or less components than shown in the figure, or combine certain components, or arrange the components differently.

[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 only for description 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 the present 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 "first", "second" and "third" to different types.

[0124] In the description of the embodiments of the present application, "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 the present application should not be interpreted as being more preferred or more advantageous than other embodiments or designs. Specifically, the use of words such as "exemplary", "for example" or "for example" is intended to present related concepts in a specific way.

[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; the “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 that appear in a specific order are included, but it should be understood that these operations or steps may not be executed in the order in which they appear in the embodiments of the present application or in parallel, and the sequence number of the operation is only used to distinguish the different operations, and the sequence number itself does not represent any execution order. In addition, these processes may include more or fewer operations, and these operations or steps may be executed 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 a necessary general hardware platform, and of course by hardware, but in many cases the former is a better implementation method. Based on such an understanding, the technical solution of the present application is essentially 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, disk, CD) as described above, and includes a number of instructions for 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 are not intended to 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, then calculating the total pressure impact on the intake pipe caused by the backfire problem of the engine; 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 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 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; Calculate the pressure shock on the intake pipe when the engine has a backfire problem based on the obtained temperature value of the intake pipe at the moment when the backfire problem occurs and the temperature value of the intake pipe at the last 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 after the natural gas is burned; According to the duration of the backfire problem of the engine and the pressure impact on the intake pipe when the backfire problem occurs in the engine, the total pressure impact on the intake pipe caused by the backfire problem of the engine is calculated.

3. The alarm method based on engine backfire problem as claimed in claim 2, characterized in that: The method calculates the pressure shock on the intake pipe when the engine has a backfire problem based on the obtained 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, 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 after the natural gas is burned, including: 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 last 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 on the intake pipe when the engine has a backfire problem is calculated based on a first preset formula, the temperature value of the intake pipe at the moment when the engine has a backfire problem and 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 after the natural gas is burned.

4. The alarm method based on engine backfire problem as claimed in claim 2, characterized in that: The calculating of the total pressure impact caused by the backfire problem of the engine on the intake pipe according to the duration of the backfire problem of the engine and the pressure impact caused by the backfire problem of the engine on the intake pipe comprises: 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 backfire problem of the engine on the intake pipe is calculated based on the second preset formula, the duration of the backfire problem of the engine and the pressure shock caused to the intake pipe when the backfire problem occurs in the engine.

5. The alarm method based on engine backfire problem as claimed in 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 the temperature value of the intake pipe at each target time, wherein each target time is the time between when the engine backfires and when the engine ends the backfire; Obtaining the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume generated after combustion of natural gas at each target time; Calculate the pressure impact on the intake pipe caused by the backfire problem of the engine at each target time according to the 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 after the natural gas is burned, 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.

6. The alarm method based on engine backfire problem as claimed in 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 caused by the backfire problem of the engine on the intake pipe 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.

7. The alarm method based on engine backfire problem as claimed in claim 1, characterized in that: The determining whether a backfire problem occurs in the engine of the vehicle according to the collected information of the current vehicle speed and the temperature change of the intake pipe includes: Collecting the current vehicle speed and the temperature change information of the intake pipe, 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 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, then recording the time duration for 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 time length during which the temperature value of the intake pipe is greater than the preset temperature value is greater than the preset time length, it is determined that a backfire problem occurs in 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 determination module, used to determine whether a backfire problem occurs in the engine of the vehicle according to the collected information of the vehicle speed and the temperature change of the intake pipe; A calculation module, for calculating the 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 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.

9. 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, 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 in any one of claims 1 to 7 are implemented.

10. 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 as described in any one of claims 1 to 7 are implemented.

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