Engineering vehicle and auxiliary starting method, device and storage medium thereof

Abstract

The application discloses an engineering vehicle and a secondary starting method and device thereof and a storage medium, and relates to the field of automobile performance adjustment.The steps of the method comprise the following steps: setting a driving torque threshold value according to the driving torque received by the driving shaft when the driving shaft is in the air and the driving force received by the driving wheel when the driving shaft is on the ground; when a secondary starting signal is received, controlling the engine to generate a driving torque and transmit the driving torque to the driving shaft, and starting the engine when the driving torque received by the driving shaft is less than the driving torque threshold value.The application compares the driving torque generated by the engine with the driving torque threshold value in the mode of "pseudo starting" of the engine, and can further obtain the result whether the vehicle will slip out when the engine is started in the non-empty gear state, and the engine is started if not.Therefore, the application can start the vehicle in the mode of secondary starting under the condition of ensuring safety, and further greatly improves the working efficiency and significantly improves the user experience.

Description

Technical Field

[0001] This invention relates to the field of automotive performance adjustment, specifically to an engineering vehicle and its auxiliary starting method, device, and storage medium. Background Technology

[0002] After the engineering vehicle stops during power take-off, the engine cannot be started using the auxiliary start button on the chassis. The vehicle must be restarted from the cab. The general procedure is as follows:

[0003] 1. The driver gets into the cab and confirms that the gear is in neutral.

[0004] 2. Start the engine;

[0005] 3. Depress the clutch fully and wait 8-10 seconds;

[0006] 4. Press the power take-off switch;

[0007] 5. Gradually release the clutch;

[0008] 6. With the clutch fully disengaged and power take-off engaged, the driver leaves the cab.

[0009] It can be concluded that even with skilled operation, the above process takes at least 2 to 3 minutes, which is relatively inefficient. Summary of the Invention

[0010] To address the shortcomings of existing technologies, the technical problem solved by this invention is: how to restart an engineering vehicle via a secondary starter while ensuring safety after the vehicle stops during power take-off.

[0011] To achieve the above objectives, in a first aspect, embodiments of this application provide a secondary start method for an engineering vehicle, the method comprising the following steps: setting a driving torque threshold based on the driving torque received by the drive shaft when it is suspended in the air and the driving force received by the drive wheel when the drive shaft is on the ground; upon receiving a secondary start signal, controlling the engine to generate driving torque and transmitting it to the drive shaft; and starting the engine when the driving torque received by the drive shaft is less than the driving torque threshold.

[0012] In conjunction with the first aspect, in one embodiment, the range of the driving threshold is: above the driving torque received during normal rotation when the drive shaft is suspended in the air; below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0013] In conjunction with the first aspect, in one embodiment, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft when receiving the auxiliary start signal includes: after receiving the auxiliary start signal, controlling the crankshaft of the engine to rotate by the starter on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0014] In conjunction with the first aspect, in one embodiment, the process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0015] In conjunction with the first aspect, in one embodiment, after starting the engine, the following step is further included: when the driving torque on the drive shaft is detected to be above a driving threshold, the engine is shut off.

[0016] In conjunction with the first aspect, in one implementation, the method includes the following steps:

[0017] Upon receiving a secondary start signal and in a non-neutral state with the power take-off switch closed, the starter motor controls the crankshaft rotation of the engine to generate driving torque, which is then transmitted to the drive shaft via the transmission system.

[0018] Determine if the driving torque is above the driving torque threshold. If yes, do not start the engine and end the process; otherwise, start the engine.

[0019] During the engine start-up process in non-neutral mode, the driving torque is monitored in real time. When the driving torque is detected to be above the driving torque threshold, the engine is shut off.

[0020] Secondly, embodiments of this application provide a computer-readable storage medium storing a secondary startup program for an engineering vehicle. When the secondary startup program for the engineering vehicle is executed, it implements the steps of the method provided in the first aspect, specifically:

[0021] The driving torque threshold is set based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground. When a secondary start signal is received, the engine is controlled to generate driving torque and transmit it to the drive shaft. When the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and the engine is started at this time.

[0022] The driving threshold range is: above the driving torque experienced during normal rotation when the drive shaft is suspended (the standard for normal rotation is the prior art); and below the driving force experienced by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0023] When a secondary start signal is received, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft includes: after receiving the secondary start signal, controlling (dragging) the crankshaft of the engine to rotate through the starter motor on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0024] When the driving torque on the drive shaft is less than the driving torque threshold, the engine starting process includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0025] After starting the engine, the following steps are also included: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear take-off, and further ensuring vehicle safety.

[0026] Thirdly, embodiments of this application provide a secondary starting device for an engineering vehicle, characterized in that: the device is used to implement the steps of the method provided in the first aspect, specifically as follows:

[0027] The driving torque threshold is set based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground. When a secondary start signal is received, the engine is controlled to generate driving torque and transmit it to the drive shaft. When the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and the engine is started at this time.

[0028] The driving threshold range is: above the driving torque experienced during normal rotation when the drive shaft is suspended (the standard for normal rotation is the prior art); and below the driving force experienced by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0029] When a secondary start signal is received, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft includes: after receiving the secondary start signal, controlling (dragging) the crankshaft of the engine to rotate through the starter motor on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0030] When the driving torque on the drive shaft is less than the driving torque threshold, the engine starting process includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0031] After starting the engine, the following steps are also included: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear take-off, and further ensuring vehicle safety.

[0032] In conjunction with the third aspect, in one embodiment, the device includes an EECU, a BCM, and a drive shaft torque sensor.

[0033] The drive shaft torque sensor is used to: collect drive torque;

[0034] EECU and BCM are used for:

[0035] The BCM compares the driving torque with a driving torque threshold. When the driving torque is above the threshold, the comparison result is sent to the EECU. If the EECU does not receive the comparison result within a specified time, the engine is started.

[0036] or:

[0037] The BCM compares the driving torque with the driving torque threshold. When the driving torque is less than the driving torque threshold, the comparison result is sent to the EECU. When the EECU receives the comparison result within a specified time, it starts the engine.

[0038] or:

[0039] The BCM sends the drive torque to the EECU; the EECU compares the drive torque with a drive torque threshold, and starts the engine when the drive torque is less than the drive torque threshold.

[0040] Fourthly, embodiments of this application provide an engineering vehicle that includes the auxiliary starting device for the engineering vehicle provided in the third aspect.

[0041] Compared with the prior art, the advantages of the present invention are as follows:

[0042] This invention employs a "pseudo-start" method (i.e., the engine only generates driving torque without actually starting) to compare the generated driving torque with a driving torque threshold. This threshold is set based on the driving torque experienced when the drive shaft is suspended and the driving force experienced by the drive wheels when the drive shaft is on the ground. This allows the system to determine whether starting the engine in a non-neutral state will cause the vehicle to lurch forward; if not, the engine is started. Therefore, this invention enables vehicle starting via a secondary start method while ensuring safety, significantly improving work efficiency and enhancing the user experience compared to existing technologies that require starting the vehicle from the driver's cab. Attached Figure Description

[0043] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0044] Figure 1 This is a schematic diagram of the vehicle startup process in the prior art;

[0045] Figure 2 This is a schematic diagram of the vehicle startup process in an embodiment of the present invention;

[0046] Figure 3This is a flowchart illustrating the secondary startup method in an embodiment of the present invention. Detailed Implementation

[0047] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0048] The flowchart shown in the attached diagram is for illustrative purposes only and does not necessarily include all content and operations / steps, nor does it necessarily have to be performed in the order described. For example, some operations / steps can be broken down, combined, or partially merged, so the actual execution order may change depending on the actual situation.

[0049] First, a brief explanation of the research and development process of this invention will be given.

[0050] The inventors discovered that the reason why, in existing technologies, the vehicle can only be restarted from the driver's cab after a shutdown during power take-off is as follows:

[0051] Whether an electronically controlled engine can start normally depends on various conditions determined by the EECU, such as: whether the system voltage is appropriate, whether the throttle position is within the starting range, and whether the intake air pressure is normal. Setting the neutral signal is one of the necessary conditions for engine starting, which is related to starting safety and prevents the vehicle from lurching forward and causing an accident when starting in gear.

[0052] See Figure 1 As shown, when the transmission is in neutral, the low end of the starter relay is grounded, the signal relay contact of the VECU (Vehicle Control Unit) is closed, and the gear position signal input to the VECU is low, allowing the engine to start (assuming other starting conditions are met). When not in neutral, the neutral switch is open, the low end of the starter relay is floating (i.e., the relay is not working), and the VECU cannot recognize the neutral signal, so the engine cannot start.

[0053] Therefore, if a backup start is desired during a power take-off process after a shutdown, a backup start can be performed if it can be confirmed that it is safe (i.e., whether the vehicle will lurch forward if it is not started in neutral).

[0054] Based on this, in order 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.

[0055] In a first aspect, embodiments of this application provide a secondary start method for an engineering vehicle. The method includes the following steps: setting a driving torque threshold based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground; upon receiving a secondary start signal, controlling the engine to generate driving torque and transmitting it to the drive shaft; when the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and at this time the engine is started.

[0056] Therefore, this invention achieves a "pseudo-start" of the engine (i.e., only generating driving torque without actually starting the engine), comparing the generated driving torque with a driving torque threshold. This threshold is set based on the driving torque experienced when the drive shaft is suspended and the driving force experienced by the drive wheels when the drive shaft is on the ground. This allows the invention to determine whether starting the engine in a non-neutral state will cause the vehicle to lurch forward; if not, the engine is started. Thus, this invention enables vehicle starting via a secondary start method while ensuring safety, significantly improving work efficiency and enhancing the user experience compared to prior art methods that require starting the vehicle from the driver's cab.

[0057] In one embodiment, the range of the driving threshold in the above method is: above the driving torque received during normal rotation when the drive shaft is suspended (the standard for normal rotation is the prior art); and below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0058] In one embodiment, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft when receiving the auxiliary start signal in the above method includes: after receiving the auxiliary start signal, controlling (dragging) the crankshaft of the engine to rotate through the starter on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0059] In one embodiment, the process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold in the above method includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0060] See Figure 2 As shown, the specific implementation of the above embodiment can be as follows: the BCM (Body Control Module) compares the driving torque (obtained by the drive shaft torque sensor) with the driving torque threshold, and sends the specified result to the EECU. For example, if the result is above the driving torque threshold, the EECU is set to start the engine if no result is received within a specified time; or if the result is below the driving torque threshold, the EECU is set to start the engine if a result is received within a specified time.

[0061] Alternatively, the BCM can be responsible for transmitting drive torque, while the EECU compares the drive torque with the drive torque threshold and decides whether to start the engine based on the comparison result.

[0062] The driving torque or the comparison results mentioned above can be transmitted via CAN bus or hard wire. The transmission path can be forwarded from BCM or VECU to EECU, or it can be sent directly to EECU.

[0063] Furthermore, after starting the engine, the above method also includes the following steps: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear, thus further ensuring vehicle safety.

[0064] See below. Figure 3 As shown, the method of the present invention is illustrated in terms of timing through a specific embodiment.

[0065] S1: The operator presses the auxiliary start button on the chassis, at which point the auxiliary start signal is transmitted to the EECU, and the process switches to S2.

[0066] S2: With the power take-off switch closed, the EECU determines whether it is in neutral. If so, it starts the engine and ends the process; otherwise, it proceeds to S3.

[0067] S3: The starter motor controls the crankshaft rotation of the engine to generate driving torque, which is then transmitted to the drive shaft through the transmission system, and then to S4.

[0068] S4: Determine if the driving torque is above the driving torque threshold. If yes, do not start the engine and end the process. Otherwise, start the engine and proceed to S5.

[0069] S5: During the engine start-up process in non-neutral mode, the driving torque is monitored in real time. When the driving torque is detected to be above the driving torque threshold, the engine is shut off.

[0070] Secondly, embodiments of this application also provide a secondary starting device for an engineering vehicle, which is used to implement the method described in the first aspect, the method specifically being:

[0071] The driving torque threshold is set based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground. When a secondary start signal is received, the engine is controlled to generate driving torque and transmit it to the drive shaft. When the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and the engine is started at this time.

[0072] As can be seen, this invention uses a "pseudo-start" method (i.e., only allowing the engine to generate driving torque without actually starting it) to compare the driving torque generated by the engine with a driving torque threshold. This threshold is set based on the driving torque experienced when the drive shaft is suspended and the driving force experienced by the drive wheels when the drive shaft is on the ground. This allows the invention to determine whether starting the engine in a non-neutral state will cause the vehicle to lurch forward; if not, the engine is started. Therefore, this invention can start the vehicle safely using a secondary start method, significantly improving work efficiency and enhancing the user experience compared to starting the vehicle from the cab in existing technologies.

[0073] In one embodiment, the range of the aforementioned driving threshold is: above the driving torque received during normal rotation (the standard for normal rotation is the prior art) when the drive shaft is suspended in the air; and below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0074] In one embodiment, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft when the auxiliary start signal is received includes: after receiving the auxiliary start signal, controlling (dragging) the crankshaft of the engine to rotate by the starter motor on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0075] In one embodiment, the process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0076] Furthermore, after starting the engine, the above method also includes the following steps: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear, thus further ensuring vehicle safety.

[0077] In one embodiment, see Figure 2 As shown, the device includes an EECU, a BCM, and a drive shaft torque sensor.

[0078] The drive shaft torque sensor is used to: collect drive torque;

[0079] EECU and BCM can be used in any of the following three ways:

[0080] (1) BCM is used to compare the driving torque and the driving torque threshold. When the driving torque is above the driving torque threshold, the comparison result is sent to the EECU.

[0081] The EECU is used to start the engine if no comparison result is received within a specified time.

[0082] (2) BCM is used to compare the driving torque with the driving torque threshold. When the driving torque is less than the driving torque threshold, the comparison result is sent to the EECU.

[0083] The EECU is used to start the engine when a comparison result is received within a specified time.

[0084] (3) The BCM is used to: send the driving torque to the EECU;

[0085] The EECU is used to compare the drive torque with a drive torque threshold, and to start the engine when the drive torque is less than the drive torque threshold.

[0086] Thirdly, embodiments of this application also provide an engineering vehicle, which includes the auxiliary starting device mentioned in the third aspect, the specific usage of which is as follows:

[0087] The driving torque threshold is set based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground. When a secondary start signal is received, the engine is controlled to generate driving torque and transmit it to the drive shaft. When the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and the engine is started at this time.

[0088] As can be seen, this invention uses a "pseudo-start" method (i.e., only allowing the engine to generate driving torque without actually starting it) to compare the driving torque generated by the engine with a driving torque threshold. This threshold is set based on the driving torque experienced when the drive shaft is suspended and the driving force experienced by the drive wheels when the drive shaft is on the ground. This allows the invention to determine whether starting the engine in a non-neutral state will cause the vehicle to lurch forward; if not, the engine is started. Therefore, this invention can start the vehicle safely using a secondary start method, significantly improving work efficiency and enhancing the user experience compared to starting the vehicle from the cab in existing technologies.

[0089] In one embodiment, the range of the aforementioned driving threshold is: above the driving torque received during normal rotation (the standard for normal rotation is the prior art) when the drive shaft is suspended in the air; and below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0090] In one embodiment, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft when the auxiliary start signal is received includes: after receiving the auxiliary start signal, controlling (dragging) the crankshaft of the engine to rotate by the starter motor on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0091] In one embodiment, the process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0092] Furthermore, after starting the engine, the above method also includes the following steps: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear, thus further ensuring vehicle safety.

[0093] Fourthly, embodiments of this application also provide a computer-readable storage medium.

[0094] The computer-readable storage medium of this application stores a secondary startup program for an engineering vehicle, wherein when the secondary startup program for the engineering vehicle is executed by a processor, it implements the steps of the secondary startup method for the engineering vehicle as described above, specifically:

[0095] The driving torque threshold is set based on the driving torque received when the drive shaft is suspended in the air and the driving force received by the drive wheels when the drive shaft is on the ground. When a secondary start signal is received, the engine is controlled to generate driving torque and transmit it to the drive shaft. When the driving torque received by the drive shaft is less than the driving torque threshold, it means that the torque received by the drive shaft will not cause the vehicle to lurch forward, and the engine is started at this time.

[0096] As can be seen, this invention uses a "pseudo-start" method (i.e., only allowing the engine to generate driving torque without actually starting it) to compare the driving torque generated by the engine with a driving torque threshold. This threshold is set based on the driving torque experienced when the drive shaft is suspended and the driving force experienced by the drive wheels when the drive shaft is on the ground. This allows the invention to determine whether starting the engine in a non-neutral state will cause the vehicle to lurch forward; if not, the engine is started. Therefore, this invention can start the vehicle safely using a secondary start method, significantly improving work efficiency and enhancing the user experience compared to starting the vehicle from the cab in existing technologies.

[0097] In one embodiment, the range of the aforementioned driving threshold is: above the driving torque received during normal rotation (the standard for normal rotation is the prior art) when the drive shaft is suspended in the air; and below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

[0098] In one embodiment, the process of controlling the engine to generate driving torque and transmitting it to the drive shaft when the auxiliary start signal is received includes: after receiving the auxiliary start signal, controlling (dragging) the crankshaft of the engine to rotate by the starter motor on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

[0099] In one embodiment, the process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

[0100] Furthermore, after starting the engine, the above method also includes the following steps: when the driving torque on the drive shaft is detected to be above the driving threshold, the engine is turned off, thereby avoiding the situation where the vehicle lurches forward due to the increased driving torque when starting with gear, thus further ensuring vehicle safety.

[0101] The fourth aspect describes a computer-readable storage medium that can be used with corresponding electronic devices, which may include processors, memory, communication interfaces, and communication buses.

[0102] The communication bus can be of any type and is used to interconnect the processor, memory, and communication interface.

[0103] Communication interfaces include input / output (I / O) interfaces, physical interfaces, and logical interfaces used to interconnect devices within the electronic device, as well as interfaces used to interconnect the electronic 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.

[0104] The memory is the fourth aspect of computer-readable storage media, which 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.

[0105] The processor can be a general-purpose processor, which can call the auxiliary startup program for the engineering vehicle stored in the memory and execute the auxiliary startup method for the engineering vehicle 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 auxiliary startup program for the engineering vehicle is called can be referred to the various embodiments of the AAAA method of this application, and will not be repeated here.

[0106] 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.

[0107] 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.

[0108] 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.

[0109] 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.

[0110] 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.

[0111] 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.

[0112] 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.

[0113] The above are merely specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily conceive of various equivalent modifications or substitutions within the technical scope disclosed in the present invention, and these modifications or substitutions should all be covered within the protection scope of the present invention. Therefore, the protection scope of the present invention should be determined by the scope of the claims.

Claims

1. A secondary starting method for an engineering vehicle, characterized in that, The method includes the following steps: setting a driving torque threshold based on the driving torque received when the drive shaft is suspended and the driving force received by the drive wheel when the drive shaft is on the ground; when a secondary start signal is received, controlling the engine to generate driving torque and transmitting it to the drive shaft; when the driving torque received by the drive shaft is less than the driving torque threshold, starting the engine; when the driving torque received by the drive shaft is detected to be above the driving torque threshold, shutting off the engine.

2. The auxiliary starting method for engineering vehicles as described in claim 1, characterized in that, The range of the driving torque threshold is: above the driving torque received during normal rotation when the drive shaft is suspended in the air; below the driving force received by the drive wheels when the drive shaft is on the ground and the vehicle is started.

3. The auxiliary starting method for engineering vehicles as described in claim 1, characterized in that, The process of controlling the engine to generate driving torque and transmitting it to the drive shaft when receiving the auxiliary start signal includes: after receiving the auxiliary start signal, controlling the crankshaft of the engine to rotate by the starter on the engine to generate driving torque, and transmitting the driving torque to the drive shaft through the transmission system.

4. The auxiliary starting method for engineering vehicles as described in claim 1, characterized in that, The process of starting the engine when the driving torque on the drive shaft is less than the driving torque threshold includes: determining whether the driving torque is above the driving torque threshold; if so, not starting the engine; otherwise, starting the engine.

5. The auxiliary starting method for an engineering vehicle as described in any one of claims 1 to 4, characterized in that, The procedure of this method includes: Upon receiving a secondary start signal and in a non-neutral state with the power take-off switch closed, the starter motor controls the crankshaft rotation of the engine to generate driving torque, which is then transmitted to the drive shaft via the transmission system. Determine if the driving torque is above the driving torque threshold. If yes, do not start the engine and end the process; otherwise, start the engine. During the engine start-up process in non-neutral mode, the driving torque is monitored in real time. When the driving torque is detected to be above the driving torque threshold, the engine is shut off.

6. A computer-readable storage medium, characterized in that, The computer-readable storage medium stores a secondary start-up program for an engineering vehicle, wherein when the secondary start-up program for the engineering vehicle is executed, it implements the steps of the secondary start-up method for an engineering vehicle as described in any one of claims 1 to 5.

7. A secondary starting device for an engineering vehicle, characterized in that: The device is used to implement the steps of the auxiliary starting method for an engineering vehicle as described in any one of claims 1 to 5.

8. The auxiliary starting device for engineering vehicles as described in claim 7, characterized in that: The device includes an EECU, a BCM, and a drive shaft torque sensor; The drive shaft torque sensor is used to: collect drive torque; EECU and BCM are used for: The BCM compares the driving torque with a driving torque threshold. When the driving torque is above the driving torque threshold, the comparison result is sent to the EECU. If the EECU does not receive the comparison result within a specified time, the engine is started. or: The BCM compares the driving torque with the driving torque threshold. When the driving torque is less than the driving torque threshold, the comparison result is sent to the EECU. When the EECU receives the comparison result within a specified time, it starts the engine. or: The BCM sends the drive torque to the EECU; the EECU compares the drive torque with a drive torque threshold, and starts the engine when the drive torque is less than the drive torque threshold.

9. An engineering vehicle, characterized in that: The engineering vehicle includes the auxiliary starting device for the engineering vehicle as described in claim 7 or 8.

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