Engine backfire problem-based alarming method, apparatus, and device, and storage medium
By collecting vehicle speed and intake manifold temperature information, the total pressure impact of engine backfire on the intake manifold is calculated, and an alarm message is sent. This solves the problem of intake manifold cracking caused by engine backfire, enabling early identification and replacement of the intake manifold and ensuring normal vehicle operation.
Patent Information
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- DONGFENG COMML VEHICLE CO LTD
- Filing Date
- 2025-06-19
- Publication Date
- 2026-05-15
AI Technical Summary
In existing technology, engine backfire issues cause natural gas to burn inside the intake manifold, leading to cracks in the intake manifold and preventing the vehicle from operating normally.
By collecting information on vehicle speed and intake manifold temperature changes, it can determine whether the engine has a backfire problem, calculate the total pressure impact of the backfire problem on the intake manifold, and send alarm information to identify in advance whether the intake manifold is cracked.
It enables accurate judgment of changes in the strength of the intake manifold, early identification of the risk of intake manifold cracking, and avoids technical problems that prevent the vehicle from running.
Smart Images
Figure CN2025101937_15052026_PF_FP_ABST
Abstract
Description
Alarm methods, devices, equipment, and storage media based on engine backfire problems Technical Field
[0001] This application relates to the field of vehicle safety technology, specifically to an alarm method, device, equipment, and computer-readable storage medium based on engine backfire problems. Background Technology
[0002] Backfire in natural gas engines is a common malfunction. It occurs when high-temperature gases from the combustion chamber flow back into the intake system during the engine's intake process, causing abnormal combustion. This leads to abnormal noises on the intake side and insufficient engine power. Common causes of backfire include an overly lean air-fuel mixture, ignition system problems, and excessive ignition advance angle. For example, an overly lean mixture may be due to a fault in the fuel system or intake system, such as insufficient fuel injection or excessive air intake. Ignition system problems include insufficient ignition energy or faulty spark plugs. An excessive ignition advance angle is caused by improper crankshaft sensor clearance, looseness, or a damaged temperature sensor. Currently, when backfire occurs, natural gas burns inside the intake manifold, causing it to crack and rendering the vehicle unable to operate normally. Summary of the Invention
[0003] This application provides an alarm method, device, equipment, and computer-readable storage medium for engine backfire problems, which can solve the technical problem in the prior art where natural gas burns in the intake manifold when engine backfire occurs, causing the intake manifold to crack and thus rendering the vehicle unable to drive.
[0004] In a first aspect, embodiments of this application provide an alarm method based on engine backfire problems, the alarm method based on engine backfire problems including:
[0005] Based on the collected information on the current vehicle speed and intake manifold temperature changes, it is determined whether the vehicle's engine has experienced a backfire problem.
[0006] If it is determined that the engine has a backfire problem, then calculate the total pressure impact of the engine backfire problem on the intake manifold;
[0007] An alarm message is sent based on the total pressure impact on the intake manifold caused by the engine backfire problem.
[0008] In conjunction with the first aspect, in one embodiment, calculating the total pressure surge of the engine backfire problem on the intake manifold includes:
[0009] Obtain the time when the engine backfire problem occurs and the time when the engine backfire problem ends;
[0010] The duration of the engine backfire problem is calculated based on the time when the engine backfire problem occurs and the time when the engine backfire problem ends.
[0011] Based on the temperature values of the intake manifold at the moment the engine backfires and the temperature values of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume generated after the natural gas combustion, the pressure impact on the intake manifold when the engine backfires is calculated.
[0012] Based on the duration of the engine backfire problem and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
[0013] In conjunction with the first aspect, in one embodiment, the step of calculating the pressure impact on the intake manifold when the engine backfires, based on the temperature value of the intake manifold at the moment the engine backfires and the temperature value of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume generated after the combustion of natural gas, includes:
[0014] Obtain the intake manifold temperature at the moment the engine backfires and the intake manifold temperature at the previous moment;
[0015] The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion are obtained.
[0016] Based on the first preset formula, the temperature value of the intake manifold at the moment the engine backfires and the temperature value of the intake manifold at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake manifold, and the volume produced after the natural gas is burned, the pressure impact on the intake manifold when the engine backfires is calculated.
[0017] In conjunction with the first aspect, in one embodiment, calculating the total pressure impact of the engine backfire problem on the intake manifold based on the duration of the engine backfire problem and the pressure impact generated on the intake manifold when the engine backfire problem occurs includes:
[0018] The duration of the engine backfire problem and the pressure surge generated on the intake manifold when the engine backfires are obtained.
[0019] Based on the second preset formula, the duration of the engine backfire problem, and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
[0020] In conjunction with the first aspect, in one embodiment, calculating the total pressure surge of the engine backfire problem on the intake manifold includes:
[0021] The temperature value of the intake manifold is obtained at each target time, wherein each target time is the time between when the engine backfires and when the engine stops backfiring;
[0022] The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after combustion of natural gas are obtained at each of the target times.
[0023] Based on the first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of natural gas at each target time, the mass of natural gas in the intake pipe, the volume generated after natural gas combustion, and the temperature value of the intake pipe, the pressure impact on the intake pipe caused by the engine backfire problem at each target time is calculated.
[0024] The total pressure impact of the engine backfire problem on the intake manifold is calculated by accumulating the pressure impacts on the intake manifold at each target time.
[0025] In conjunction with the first aspect, in one embodiment, sending an alarm message based on the total pressure surge generated in the intake manifold due to the engine backfire problem includes:
[0026] The total pressure surge generated in the intake manifold due to the engine backfire problem is compared with the preset pressure surge.
[0027] If the total pressure impact is greater than or equal to the preset pressure impact, an alarm message is sent, which may include voice, text, video, or light signals.
[0028] In conjunction with the first aspect, in one implementation, determining whether the vehicle's engine has a backfire problem based on the collected information on the current vehicle speed and intake manifold temperature changes includes:
[0029] Collect information on the current vehicle speed and the temperature change of the air 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 the preset speed, then determine whether the temperature value of the intake pipe is greater than the preset temperature value.
[0031] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, then the duration for which the temperature value of the intake pipe is greater than the preset temperature value is recorded according to the time corresponding to the temperature value.
[0032] If it is determined that the duration for which the temperature value of the intake manifold is greater than the preset temperature value is greater than the preset duration, then it is determined that the engine has a backfire problem.
[0033] Secondly, embodiments of this application provide an alarm device based on engine backfire problems, the alarm device based on engine backfire problems comprising:
[0034] The determination module is used to determine whether the vehicle's engine has a backfire problem based on the collected information on the current vehicle speed and the temperature change of the intake manifold.
[0035] The calculation module is used to calculate the total pressure impact of the engine backfire problem on the intake manifold if it is determined that the engine has a backfire problem.
[0036] The sending module is used to send alarm information based on the total pressure impact on the intake manifold caused by the engine backfire problem.
[0037] Thirdly, embodiments of this application provide an alarm device based on engine backfire problems. The alarm device based on engine backfire problems includes a processor, a memory, and an alarm program based on engine backfire problems stored in the memory and executable by the processor. When the alarm program based on engine backfire problems is executed by the processor, it implements the steps of the alarm method based on engine backfire problems as described above.
[0038] Fourthly, embodiments of this application provide a computer-readable storage medium storing 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, it implements the steps of the alarm method based on an engine backfire problem as described above.
[0039] The beneficial effects of the technical solutions provided in this application include:
[0040] By collecting information on the vehicle's current speed and intake manifold temperature changes, it is determined whether the vehicle's engine has experienced backfire. If backfire is confirmed, the total pressure surge caused by the backfire on the intake manifold is calculated. Based on this total pressure surge, an alarm is sent. This solves the technical problem in current technologies where natural gas burns inside the intake manifold during backfire, leading to cracking and rendering the vehicle immobile. The new system accurately assesses intake manifold strength changes based on the pressure surge caused by backfire, thus identifying potential cracks and prompting early replacement to prevent vehicle malfunction due to a cracked intake manifold. Attached Figure Description
[0041] Figure 1 is a flowchart illustrating the first embodiment of the alarm method based on engine backfire problem of this application;
[0042] Figure 2 is a detailed flowchart of step S20 in Figure 1 of this application;
[0043] Figure 3 is a detailed flowchart of step S20 in Figure 1 of this application;
[0044] Figure 4 is a functional module diagram of an embodiment of the alarm device based on engine backfire problem of this application;
[0045] Figure 5 is a schematic diagram of the hardware structure of the alarm device based on the engine backfire problem involved in the embodiment of this application. Detailed Implementation
[0046] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present application, and not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present application.
[0047] First, some of the technical terms used in this application will be explained to help those skilled in the art understand this application.
[0048] To make the objectives, technical solutions, and advantages of this application clearer, the embodiments of this application will be described in further detail below with reference to the accompanying drawings.
[0049] In one aspect, embodiments of this application provide an alarm method based on engine backfire problems.
[0050] In one embodiment, referring to FIG1, FIG1 is a schematic flowchart of the first embodiment of the alarm method based on engine backfire problem of this application. As shown in FIG1, the alarm method based on engine backfire problem includes:
[0051] Step S10: Based on the collected information on the current vehicle speed and intake manifold temperature change, determine whether the vehicle's engine has experienced a backfire problem;
[0052] As an example, the system collects information on the current vehicle speed and the temperature change of the intake manifold, where the intake manifold temperature change is the measured value. The current vehicle speed is compared to a preset speed. If the current speed is greater than the preset speed, the intake manifold temperature change rate is calculated based on the measured value. This rate is then used to determine if the vehicle's engine has experienced backfire. For instance, comparing the intake manifold temperature change rate to a preset rate of change, if the rate of change is greater than the preset rate of change, it is determined that the vehicle's engine has experienced backfire.
[0053] The system compares the current vehicle speed with a preset speed. If the current speed is less than or equal to the preset speed, the system calculates the intake manifold temperature change rate and uses this rate to determine if the engine is experiencing backfire. For example, comparing the intake manifold temperature change rate with a preset rate of change, if the rate of change is less than or equal to the preset rate of change, it is determined that the engine is not experiencing backfire.
[0054] Specifically, determining whether the vehicle's engine has experienced backfire based on the collected information on the current vehicle speed and intake manifold temperature changes includes: collecting the current vehicle speed and intake manifold temperature change information, wherein the temperature change information includes a 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 intake manifold temperature value is greater than a preset temperature value; if the intake manifold temperature value is greater than the preset temperature value, recording the duration for which the intake manifold temperature value is greater than the preset temperature value based on the time corresponding to the temperature value; if the duration for which the intake manifold temperature value is greater than the preset temperature value is greater than a preset duration, determining that the engine has experienced backfire.
[0055] As an example, the system collects information on the current vehicle speed and intake manifold temperature changes. The temperature change information includes the temperature value and the corresponding time. The current vehicle speed is compared to a preset speed. If the current speed is greater than the preset speed, the intake manifold temperature value is compared to the preset temperature value. If the acquired intake manifold temperature value is greater than the preset temperature value, the time corresponding to that temperature value is obtained, and the duration for which the intake manifold temperature value is greater than the preset temperature value is recorded from that time. The obtained duration is compared to a preset duration. If the duration is greater than the preset duration, an engine backfire problem is identified.
[0056] The system compares the current vehicle speed with a preset speed. If the current speed is less than or equal to the preset speed, it confirms that the engine has not experienced backfire. Alternatively, it compares the current vehicle speed with a preset speed. If the current speed is greater than the preset speed, it compares the collected intake manifold temperature with a preset temperature. If the collected intake manifold temperature is greater than the preset temperature, it confirms that the engine has not experienced backfire. Alternatively, it compares the current vehicle speed with a preset speed. If the current speed is greater than the preset speed, it compares the collected intake manifold temperature with a preset temperature. If the collected intake manifold temperature is greater than the preset temperature, it obtains the time corresponding to that temperature value and records the duration for which the intake manifold temperature is greater than the preset temperature value at each time point starting from that time. 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 has not experienced a backfire problem.
[0057] Step S20: If it is determined that the engine has a backfire problem, calculate the total pressure impact of the engine backfire problem on the intake manifold;
[0058] As an example, if a backfire problem is determined to occur in the engine, the duration of the backfire problem and the pressure surge per second on the intake manifold when the backfire problem is detected by a preset sensor are obtained. Based on the duration of the backfire problem and the pressure surge per second on the intake manifold when the backfire problem occurs, the total pressure surge on the intake manifold caused by the backfire problem is calculated.
[0059] Step S30: Send an alarm message based on the total pressure impact on the intake manifold caused by the engine backfire problem.
[0060] As an example, when the total pressure surge caused by engine backfire to the intake manifold is detected, the total pressure surge is compared with a preset pressure surge. If the total pressure surge is greater than or equal to the preset pressure surge, an alarm message is sent, which may include voice, text, video, or light signals.
[0061] In this embodiment, by collecting information on the vehicle's current speed and intake manifold temperature changes, it is determined whether the vehicle's engine has experienced backfire. If backfire is confirmed, the total pressure impact of the backfire on the intake manifold is calculated. Based on this total pressure impact, an alarm is sent. This solves the technical problem in related technologies where natural gas burns inside the intake manifold during engine backfire, causing it to crack and rendering the vehicle immobile. The new method accurately judges the strength changes of the intake manifold based on the pressure impact caused by backfire, thus identifying potential intake manifold cracks in advance and issuing an early warning for replacement, preventing vehicle malfunction due to intake manifold cracking.
[0062] In one embodiment, referring to Figure 2, which is a detailed flowchart of step S20 in Figure 1 of this application, the detailed steps of step S20 include:
[0063] Step S21: Obtain the time when the engine backfire problem occurs and the time when the engine backfire problem ends;
[0064] As an example, the system acquires the time when an engine backfire problem occurs and the time when the backfire problem ends. For instance, when a vehicle's engine backfire problem is determined, the current time is taken as the time when the backfire problem occurs. After determining that the vehicle's engine backfire problem has occurred, the system uses real-time data on the vehicle's current speed and intake manifold temperature changes to determine whether the engine backfire problem has occurred. If it is determined that the engine has not backfired, the current time is taken as the time when the backfire problem ends.
[0065] Step S22: Calculate the duration of the engine backfire problem based on the time when the engine backfire problem occurs and the time when the engine backfire problem ends;
[0066] As an example, the duration of the engine backfire problem is calculated by subtracting the time of occurrence of the backfire problem from the time of its end.
[0067] Step S23: Based on the temperature value of the intake manifold at the moment the engine backfires and the temperature value of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume generated after the natural gas combustion, calculate the pressure impact on the intake manifold when the engine backfires.
[0068] As an example, the temperature values of the intake manifold at the moment the engine backfires and at the previous moment are obtained; the heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume produced after the combustion of natural gas are obtained; according to the first preset formula P(i)=K*c*m*(T(i)-T(i-1)) / V, the pressure impact on the intake manifold when the engine backfires is calculated, where T(i) is the temperature value of the intake manifold at the moment the engine backfires, T(i-1) is the temperature value of the intake manifold at the previous moment, c is the heat capacity of natural gas, m is the mass of natural gas in the intake manifold, v is the volume produced after the combustion of natural gas, and P(i) is the pressure impact on the intake manifold when the engine backfires is occurred.
[0069] Step S24: Calculate the total pressure impact on the intake manifold caused by the engine backfire problem based on the duration of the engine backfire problem and the pressure impact generated on the intake manifold when the engine backfire problem occurs.
[0070] As an example, after obtaining the pressure shock P(i) generated on the intake manifold when the engine backfires and the duration of the engine backfire, the pressure shock P(i) generated on the intake manifold 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 manifold when the engine backfires.
[0071] In this embodiment, by determining that an engine backfire has occurred, the total pressure impact of the engine backfire on the intake manifold is calculated. Based on the temperature values of the intake manifold at the moment the engine backfire occurred and the temperature values of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume produced after natural gas combustion, the pressure impact of the engine backfire on the intake manifold is calculated. Based on the duration of the engine backfire and the pressure impact on the intake manifold, the total pressure impact of the engine backfire on the intake manifold is calculated. The impact of the total pressure impact of the engine backfire on the intake manifold can be determined in advance, thereby preventing the intake manifold from rupturing.
[0072] In one embodiment, referring to Figure 3, which is a detailed flowchart of step S20 in Figure 1 of this application, the detailed steps of step S20 further include:
[0073] Step S25: Obtain the temperature value of the intake manifold at each target time, wherein each target time is the time between when the engine backfires and when the engine stops backfiring;
[0074] As an example, when an engine backfire problem is identified, the intake manifold temperature is recorded at various target times, where 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: Obtain the heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after combustion of natural gas at each target time.
[0076] Step S27: Based on the first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of natural gas at each target time, the mass of natural gas in the intake pipe, the volume generated after natural gas combustion, and the temperature value of the intake pipe, calculate the pressure impact on the intake pipe caused by the engine backfire problem at each target time.
[0077] As an example, based on the first preset formula P(i)=K*c*m*(T(i)-T(i-1)) / V, the pressure impact on the intake manifold when the engine backfires is calculated, where T(i) is the temperature of the intake manifold at the first moment, T(i-1) is the temperature of the intake manifold 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 manifold at the first moment, v is the volume produced after the natural gas combustion at the first moment, and P(i) is the pressure impact on the intake manifold at the first target moment when the engine backfires. This calculation is performed sequentially to calculate the pressure impact on the intake manifold at each target moment when the engine backfires.
[0078] Step S28: Calculate the total pressure impact of the engine backfire problem on the intake manifold by accumulating the pressure impacts generated by the engine backfire problem on the intake manifold at each target time.
[0079] As an example, the total pressure impact of the engine backfire problem on the intake manifold is calculated by summing the pressure impacts on the intake manifold at each target time.
[0080] In this embodiment, the pressure impact of engine backfire on the intake pipe at each target time is calculated based on the first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of natural gas at each target time, the mass of natural gas in the intake pipe, the volume generated after natural gas combustion, and the temperature value of the intake pipe. By accumulating the pressure impacts of engine backfire on the intake pipe at each target time, the total pressure impact of engine backfire on the intake pipe is calculated, thus determining the impact of the total pressure impact of engine backfire on the intake pipe in advance, thereby preventing the intake pipe from rupturing in advance.
[0081] Secondly, embodiments of this application also provide an alarm device based on engine backfire problems.
[0082] In one embodiment, referring to Figure 4, which is a functional block diagram of an embodiment of the alarm device based on engine backfire problem according to this application, the alarm device based on engine backfire problem includes:
[0083] The determination module 10 is used to determine whether the vehicle's engine has a backfire problem based on the collected information on the current vehicle speed and the temperature change of the intake manifold.
[0084] The calculation module 20 is used to calculate the total pressure impact of the engine backfire problem on the intake manifold if it is determined that the engine has a backfire problem.
[0085] The sending module 30 is used to send alarm information based on the total pressure impact on the intake manifold caused by the engine backfire problem.
[0086] Furthermore, in one embodiment, the computing module 20 is used for:
[0087] Obtain the time when the engine backfire problem occurs and the time when the engine backfire problem ends;
[0088] The duration of the engine backfire problem is calculated based on the time when the engine backfire problem occurs and the time when the engine backfire problem ends.
[0089] Based on the temperature values of the intake manifold at the moment the engine backfires and the temperature values of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume generated after the natural gas combustion, the pressure impact on the intake manifold when the engine backfires is calculated.
[0090] Based on the duration of the engine backfire problem and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
[0091] Furthermore, in one embodiment, the alarm device based on engine backfire problems further includes a new module for:
[0092] Obtain the intake manifold temperature at the moment the engine backfires and the intake manifold temperature at the previous moment;
[0093] The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion are obtained.
[0094] Based on the first preset formula, the temperature value of the intake manifold at the moment the engine backfires and the temperature value of the intake manifold at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake manifold, and the volume produced after the natural gas is burned, the pressure impact on the intake manifold when the engine backfires is calculated.
[0095] Furthermore, in one embodiment, the alarm device based on engine backfire problems further includes a new module for:
[0096] The duration of the engine backfire problem and the pressure surge generated on the intake manifold when the engine backfires are obtained.
[0097] Based on the second preset formula, the duration of the engine backfire problem, and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
[0098] Furthermore, in one embodiment, the computing module 20 is used for:
[0099] The temperature value of the intake manifold is obtained at each target time, wherein each target time is the time between when the engine backfires and when the engine stops backfiring;
[0100] The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after combustion of natural gas are obtained at each of the target times.
[0101] Based on the first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of natural gas at each target time, the mass of natural gas in the intake pipe, the volume generated after natural gas combustion, and the temperature value of the intake pipe, the pressure impact on the intake pipe caused by the engine backfire problem at each target time is calculated.
[0102] The total pressure impact of the engine backfire problem on the intake manifold is calculated by accumulating the pressure impacts on the intake manifold at each target time.
[0103] Furthermore, in one embodiment, the sending module 30 is used to:
[0104] The total pressure surge generated in the intake manifold due to the engine backfire problem is compared with the preset pressure surge.
[0105] If the total pressure impact is greater than or equal to the preset pressure impact, an alarm message is sent, which may include voice, text, video, or light signals.
[0106] Furthermore, in one embodiment, the determining module 10 is used to:
[0107] Collect information on the current vehicle speed and the temperature change of the air 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 the preset speed, then determine whether the temperature value of the intake pipe is greater than the preset temperature value.
[0109] If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, then the duration for which the temperature value of the intake pipe is greater than the preset temperature value is recorded according to the time corresponding to the temperature value.
[0110] If it is determined that the duration for which the temperature value of the intake manifold is greater than the preset temperature value is greater than the preset duration, then it is determined that the engine has a backfire problem.
[0111] The functions of each module in the alarm device based on engine backfire problem correspond to the steps in the alarm method embodiment based on engine backfire problem, and their functions and implementation processes will not be described in detail here.
[0112] Thirdly, this application provides an alarm device based on engine backfire problems. The alarm device based on engine backfire problems can be a personal computer (PC), a laptop computer, a server, or other devices with data processing capabilities.
[0113] Referring to Figure 5, which is a schematic diagram of the hardware structure of an alarm device based on engine backfire problems according to an embodiment of this application, the alarm device based on engine backfire problems in this embodiment may include a processor, a memory, a communication interface, and a communication bus.
[0114] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.
[0115] The communication interface includes input / output (I / O) interfaces, physical interfaces, and logical interfaces used for interconnecting internal components of the alarm device based on engine backfire issues, as well as interfaces used for interconnecting the alarm device with other devices (such as other computing devices or user equipment). Physical interfaces can be Ethernet interfaces, fiber optic interfaces, ATM interfaces, etc.; user equipment can be displays, keyboards, etc.
[0116] 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, which can call an alarm program based on engine backfire problems stored in memory and execute the alarm method based on engine backfire problems provided in the embodiments of this application. For example, the general-purpose processor can be a central processing unit (CPU). The method executed when the alarm program based on engine backfire problems is called can be referred to in the various embodiments of the alarm method based on engine backfire problems in this application, and will not be repeated here.
[0118] Those skilled in the art will understand that the hardware structure shown in Figure 5 does not constitute a limitation of this application, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.
[0119] Fourthly, embodiments of this application also provide a computer-readable storage medium.
[0120] This application provides a computer-readable storage medium storing an alarm program based on engine backfire problems, wherein when the alarm program based on engine backfire problems is executed by a processor, it implements the steps of the alarm method based on engine backfire problems as described above.
[0121] The method implemented when the alarm procedure based on the engine backfire problem is executed can be referred to in 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 sequence numbers of the embodiments in this application are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.
[0123] The terms "comprising" and "having," and any variations thereof, in the specification, claims, and accompanying drawings of this application are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or apparatus that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to such process, method, product, or apparatus. The terms "first," "second," and "third," etc., are used to distinguish different objects, etc., and do not indicate a sequence, nor do they limit "first," "second," and "third" to different types.
[0124] In the description of the embodiments of this application, terms such as "exemplary," "for example," or "for instance" are used to indicate examples, illustrations, or explanations. Any embodiment or design described as "exemplary," "for example," or "for instance" in the embodiments of this application should not be construed as being more preferred or advantageous than other embodiments or designs. Specifically, the use of terms such as "exemplary," "for example," or "for instance" is intended to present the relevant concepts in a concrete manner.
[0125] In the description of the embodiments of this application, unless otherwise stated, " / " means "or". For example, A / B can mean A or B. The "and / or" in the text is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, A and / or B can mean: A exists alone, A and B exist simultaneously, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more.
[0126] In some processes described in the embodiments of this application, multiple operations or steps are included in a specific order. However, it should be understood that these operations or steps may not be executed in the order they appear in the embodiments of this application, or they may be executed in parallel. The sequence number of the operation is only used to distinguish 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 sequentially or in parallel, and these operations or steps may be combined.
[0127] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they 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 this application, in essence, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) as described above, and includes several instructions to cause a terminal device to execute the methods described in the various embodiments of this application.
[0128] The above are merely preferred embodiments of this application and do not limit the patent scope of this application. Any equivalent structural or procedural transformations made using the content of this application's specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this application.
Claims
1. An alarm method based on engine backfire problem, characterized in that, The alarm method based on engine backfire problems includes: Based on the collected information on the current vehicle speed and intake manifold temperature changes, it is determined whether the vehicle's engine has experienced a backfire problem. If it is determined that the engine has a backfire problem, then calculate the total pressure impact of the engine backfire problem on the intake manifold; An alarm message is sent based on the total pressure impact on the intake manifold caused by the engine backfire problem.
2. The alarm method based on engine backfire problem as described in claim 1, characterized in that, The calculation of the total pressure impact on the intake manifold caused by the engine backfire problem includes: Obtain the time when the engine backfire problem occurs and the time when the engine backfire problem ends; The duration of the engine backfire problem is calculated based on the time when the engine backfire problem occurs and the time when the engine backfire problem ends. Based on the temperature values of the intake manifold at the moment the engine backfires and the temperature values of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume generated after the natural gas combustion, the pressure impact on the intake manifold when the engine backfires is calculated. Based on the duration of the engine backfire problem and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
3. The alarm method based on engine backfire problem as described in claim 2, characterized in that, The step of calculating the pressure impact on the intake manifold when the engine backfires, based on the temperature values of the intake manifold at the moment the engine backfires and the temperature values of the intake manifold at the previous moment, as well as the obtained heat capacity of natural gas, the mass of natural gas in the intake manifold, and the volume produced after natural gas combustion, includes: Obtain the intake manifold temperature at the moment the engine backfires and the intake manifold temperature at the previous moment; The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after natural gas combustion are obtained. Based on the first preset formula, the temperature value of the intake manifold at the moment the engine backfires and the temperature value of the intake manifold at the previous moment, the heat capacity of the natural gas, the mass of the natural gas in the intake manifold, and the volume produced after the natural gas is burned, the pressure impact on the intake manifold when the engine backfires is calculated.
4. The alarm method based on engine backfire problem as described in claim 2, characterized in that, The calculation of the total pressure impact on the intake manifold caused by the engine backfire, based on the duration of the engine backfire problem and the pressure surge generated on the intake manifold during the engine backfire problem, includes: The duration of the engine backfire problem and the pressure surge generated on the intake manifold when the engine backfires are obtained. Based on the second preset formula, the duration of the engine backfire problem, and the pressure impact on the intake manifold when the engine backfires, the total pressure impact on the intake manifold caused by the engine backfire problem is calculated.
5. The alarm method based on engine backfire problem as described in claim 1, characterized in that, The calculation of the total pressure impact on the intake manifold caused by the engine backfire problem includes: The temperature value of the intake manifold is obtained at each target time, wherein each target time is the time between when the engine backfires and when the engine stops backfiring; The heat capacity of natural gas, the mass of natural gas in the intake pipe, and the volume produced after combustion of natural gas are obtained at each of the target times. Based on the first preset formula, the temperature value of the intake pipe at each target time, the heat capacity of natural gas at each target time, the mass of natural gas in the intake pipe, the volume generated after natural gas combustion, and the temperature value of the intake pipe, the pressure impact on the intake pipe caused by the engine backfire problem at each target time is calculated. The total pressure impact of the engine backfire problem on the intake manifold is calculated by accumulating the pressure impacts on the intake manifold at each target time.
6. The alarm method based on engine backfire problem as described in claim 1, characterized in that, The alarm message is sent based on the total pressure surge generated in the intake manifold due to the engine backfire problem, including: The total pressure surge generated in the intake manifold due to the engine backfire problem is compared with the preset pressure surge. If the total pressure impact is greater than or equal to the preset pressure impact, an alarm message is sent, which may include voice, text, video, or light signals.
7. The alarm method based on engine backfire problem as described in claim 1, characterized in that, The step of determining whether the vehicle's engine has a backfire problem based on the collected information on the current vehicle speed and intake manifold temperature changes includes: Collect information on the current vehicle speed and the temperature change of the air 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 the preset speed, then determine whether the temperature value of the intake pipe is greater than the preset temperature value. If it is determined that the temperature value of the intake pipe is greater than the preset temperature value, then the duration for which the temperature value of the intake pipe is greater than the preset temperature value is recorded according to the time corresponding to the temperature value. If it is determined that the duration for which the temperature value of the intake manifold is greater than the preset temperature value is greater than the preset duration, then it is determined that the engine has a backfire problem.
8. An alarm device based on engine backfire problem, characterized in that, The alarm device based on engine backfire problem includes: The determination module is used to determine whether the vehicle's engine has a backfire problem based on the collected information on the current vehicle speed and the temperature change of the intake manifold. The calculation module is used to calculate the total pressure impact of the engine backfire problem on the intake manifold if it is determined that the engine has a backfire problem. The sending module is used to send alarm information based on the total pressure impact on the intake manifold caused by the engine backfire problem.
9. An alarm device based on engine backfire problem, characterized in that, The alarm device based on engine backfire problem includes a processor, a memory, and an alarm program based on engine backfire problem stored in the memory and executable by the processor, wherein when the alarm program based on engine backfire problem is executed by the processor, it implements the steps of the alarm method based on engine backfire problem as described in any one of claims 1 to 7.
10. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores an alarm program based on engine backfire problems, wherein when the alarm program based on engine backfire problems is executed by a processor, it implements the steps of the alarm method based on engine backfire problems as described in any one of claims 1 to 7.