A method, system, and vehicle for handling rear axle assembly anomalies

Abstract

The application provides a method, system and vehicle for processing rear axle assembly abnormalities, the method comprising: acquiring noise data and vibration data of a rear axle assembly of a vehicle; determining whether the rear axle is abnormal according to the noise data and vibration data; if the rear axle is abnormal, acquiring the abnormal reason; and according to the abnormal reason, the braking system of the vehicle controls the vehicle accordingly. The application aims to predict different types of abnormal conditions of the rear axle assembly of the vehicle in advance, and to control the vehicle accordingly to avoid further damage to the rear axle assembly.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of vehicle engineering, in particular to a method and system for handling abnormality of rear axle assembly and vehicle. BACKGROUND

[0002] The rear axle housing in the automobile is basically made of steel plate material, stamped and welded, and the internal condition cannot be seen from the outside. Therefore, when the rear axle assembly of the vehicle is abnormal, the abnormality of the rear axle assembly cannot be predicted in advance, and only when the rear axle assembly of the vehicle is seriously damaged can it be found, which will cause significant economic loss and seriously affect the use experience of the customer. SUMMARY

[0003] Therefore, the present application provides a method and system for handling abnormality of rear axle assembly and vehicle, which aims to predict different types of abnormality of the rear axle assembly of the vehicle in advance and perform corresponding brake control on the vehicle to avoid further damage to the rear axle assembly.

[0004] To achieve the above-mentioned purpose, the technical scheme of the present application is as follows:

[0005] A method for handling abnormality of rear axle assembly, the method comprising:

[0006] obtaining noise data and vibration data of the rear axle assembly of the vehicle;

[0007] determining whether the rear axle is abnormal according to the noise data and vibration data;

[0008] if the rear axle is abnormal, obtaining the abnormal reason;

[0009] according to the abnormal reason, the brake system of the vehicle performs corresponding control on the vehicle.

[0010] Further, determining whether the rear axle is abnormal according to the noise data and vibration data comprises:

[0011] obtaining the change of the noise data and the vibration data within a preset time length;

[0012] determining whether the rear axle is abnormal according to the change.

[0013] Further, determining whether the rear axle is abnormal according to the change comprises:

[0014] when the change is that the decibel value of the noise data is higher than a first preset threshold value, and the noise data changes periodically and the vibration data is higher than a second preset threshold value, it is determined that the rear axle is abnormal.

[0015] Further, the determining whether the rear axle is abnormal according to the change condition comprises:

[0016] When the change condition is that the decibel value of the noise data is in a preset range higher than a first preset threshold and the vibration data is lower than a third preset threshold, it is determined that the rear axle is abnormal.

[0017] Further, the determining whether the rear axle is abnormal according to the change condition comprises:

[0018] When the change condition is that the noise data and the vibration data change irregularly, it is determined that the rear axle is abnormal.

[0019] Further, the abnormal reason comprises:

[0020] The gear engagement of the rear axle assembly of the vehicle does not match;

[0021] Or the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil is lower than a preset amount;

[0022] Or the rear axle assembly of the vehicle has foreign matter.

[0023] Further, according to the abnormal reason, the brake system of the vehicle controls the vehicle correspondingly, comprising:

[0024] When the gear engagement of the rear axle assembly of the vehicle does not match, the brake system of the vehicle is used to control the vehicle to maintain a first preset vehicle speed to travel;

[0025] Or when the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil is lower than a preset amount, the brake system of the vehicle is used to control the vehicle to emergency brake;

[0026] Or when the rear axle assembly of the vehicle has foreign matter, the brake system of the vehicle is used to control the vehicle to maintain a second preset vehicle speed to travel.

[0027] Further, when the brake system of the vehicle controls the vehicle correspondingly according to the abnormal reason, the instrument of the vehicle outputs prompt information corresponding to the abnormal reason.

[0028] The method for processing the abnormality of the rear axle assembly has the following advantages:

[0029] The method for processing rear axle assembly abnormalities described in the application can determine whether the rear axle assembly of the vehicle has abnormalities according to the monitored noise data and vibration data. Meanwhile, the noise data and vibration data can be further analyzed to determine the specific reasons for the abnormalities of the rear axle assembly, so that the abnormalities can be processed more targetedly. After the specific reasons for the abnormalities of the rear axle assembly are determined, the vehicle can be subjected to braking control corresponding to the specific reasons through the braking system of the vehicle according to the specific reasons, so as to avoid further damage to the rear axle assembly of the vehicle caused by the user's incorrect processing mode after the rear axle assembly has abnormalities.

[0030] Another object of the application is to provide a system for processing rear axle assembly abnormalities, which aims to predict different types of abnormal conditions of the rear axle assembly of the vehicle in advance and perform corresponding braking control on the vehicle to avoid further damage to the rear axle assembly.

[0031] To achieve the above object, the technical scheme of the application is as follows:

[0032] A system for processing rear axle assembly abnormalities, the system comprising:

[0033] A data acquisition module acquires noise data and vibration data of the rear axle assembly of the vehicle through noise sensors and vibration sensors arranged on the rear axle housing of the vehicle;

[0034] A rear axle control module is configured to determine whether the rear axle has abnormalities according to the noise data and vibration data, acquire the abnormal reasons if the rear axle has abnormalities, and send a control signal corresponding to the abnormal reasons according to the abnormal reasons

[0035] A vehicle control module is configured to control the vehicle through the braking system of the vehicle according to the received control signal.

[0036] The system for processing rear axle assembly abnormalities has the same advantages as the method for processing rear axle assembly abnormalities described above, and will not be described here.

[0037] Another object of the application is to provide a vehicle, which aims to predict different types of abnormal conditions of the rear axle assembly of the vehicle in advance and perform corresponding braking control on the vehicle to avoid further damage to the rear axle assembly.

[0038] To achieve the above object, the technical scheme of the application is as follows:

[0039] A vehicle comprising a noise sensor and a vibration sensor arranged on a rear axle housing of the vehicle, and a rear axle control module connected with the noise sensor and the vibration sensor, and comprising: a system configured to handle rear axle assembly abnormalities as described above, for performing the steps in the method of handling rear axle assembly abnormalities as described above.

[0040] The vehicle has the same advantages as the system for handling rear axle assembly abnormalities described above, and will not be repeated here. BRIEF DESCRIPTION OF DRAWINGS

[0041] The accompanying drawings, which form a part of the disclosure, are intended to provide further understanding of the present application, and the illustrative embodiments thereof and their description serve to explain the present application. In the drawings:

[0042] Figure 1 is a flowchart of a method for handling rear axle assembly abnormalities according to an embodiment of the present application;

[0043] Figure 2 is a rear axle assembly control strategy diagram in a method for handling rear axle assembly abnormalities according to an embodiment of the present application;

[0044] Figure 3 is a schematic diagram of a system for handling rear axle assembly abnormalities according to an embodiment of the present application. DETAILED DESCRIPTION

[0045] It should be noted that the embodiments in the present application and the features in the embodiments can be combined with each other without conflict.

[0046] Before the method for handling rear axle assembly abnormalities provided by the present application is described, the rear axle assembly in the related technical field will be briefly described first. The main function of the rear axle assembly in the automobile is to distribute the power input by the transmission shaft to the left and right drive wheels after reducing the speed, increasing the torque and changing the transmission direction, and to make the left and right drive wheels have the differential function required by the kinematics of the automobile. In addition, the drive axle also bears the vertical force, longitudinal force and transverse force and their moments acting between the road surface and the frame or the load-bearing vehicle body. The rear axle assembly includes a rear axle housing, a main reducer, a differential and the like. The rear axle housing contains gear oil. When the vehicle is running, the main teeth, the driven teeth, the differential gears and the bearings inside the rear axle will rotate and rub, generating a large amount of heat. The gear oil lubricates each part to make it run smoothly, reduce friction, cool down, and reduce operating noise. The current rear axle housing is basically made of steel plate material and stamped and welded, and the internal situation cannot be seen from the outside.

[0047] The present application will be described in detail below with reference to the accompanying drawings and in conjunction with the embodiments.

[0048] Figure 1is a flowchart of a method for processing an abnormality of a rear axle assembly according to an embodiment of the present application. Referring to Figure 1 The method for processing an abnormality of a rear axle assembly provided by the present application comprises the following steps:

[0049] Step S11: Obtain noise data and vibration data of a rear axle assembly of a vehicle.

[0050] In this embodiment, since the rear axle housing of the vehicle is made of steel plate material and is stamped and welded, the internal situation cannot be seen from the outside, so it is not possible to directly obtain whether there is an abnormality in the internal situation of the rear axle assembly of the vehicle through intuitive image monitoring. However, since there is an abnormality in the rear axle assembly, the noise and vibration generated by the rear axle assembly will be significantly different from the noise and vibration generated by the rear axle assembly when the vehicle is running normally. Therefore, by setting a noise sensor and a vibration sensor on the rear axle housing of the vehicle, the noise data and vibration data generated by the rear axle assembly during the use of the vehicle are monitored. The noise data and vibration data generated by the rear axle assembly are used to indirectly determine whether there is an abnormality in the rear axle assembly of the vehicle. The noise data and vibration data generated by the rear axle assembly of the vehicle during use are obtained through the noise sensor and the vibration sensor arranged on the rear axle housing of the vehicle.

[0051] Step S12: Determine whether the rear axle is abnormal according to the noise data and the vibration data.

[0052] In this embodiment, after obtaining the noise data and vibration data of the rear axle assembly of the vehicle in step S11, the noise data is analyzed to determine whether the rear axle assembly of the vehicle is abnormal.

[0053] In this embodiment, step S12 specifically comprises: obtaining the change of the noise data and the vibration data within a preset time length; and determining whether the rear axle is abnormal according to the change.

[0054] In this embodiment, after obtaining the noise data and vibration data of the rear axle assembly of the vehicle in step S11, the noise data is analyzed as a noise image, and the vibration data is analyzed as a vibration pattern. Thus, the change of the noise pattern corresponding to the noise data and the change of the vibration pattern corresponding to the vibration data are obtained. A rear axle control module is arranged on the vehicle, which is connected with the noise sensor and the vibration sensor arranged on the rear axle housing of the vehicle to receive the noise data and the vibration data obtained by the noise sensor and the vibration sensor. After receiving the noise data and the vibration data sent by the noise sensor and the vibration sensor, the rear axle control module analyzes the noise data and the vibration data to determine the change of the noise pattern of the obtained noise data and the change of the vibration pattern of the obtained vibration data.

[0055] Since the sensors of the vehicle continuously acquire data during use, the acquired noise pattern is a long continuous noise pattern, and the acquired vibration pattern is a long continuous vibration pattern. In order to facilitate subsequent determination of whether the rear axle assembly is abnormal according to the change of the noise pattern and the vibration pattern, the acquired noise data and vibration data are segmented, and the acquired noise data and vibration data are segmented into noise data segments and vibration data segments of a preset time length. By the rear axle control module, the noise data and vibration data sent by the noise sensor and the vibration sensor are segmented according to the preset time length, and the noise data segments and vibration data segments in the same preset time length are analyzed to determine the change of the noise pattern of each noise data segment and the change of the vibration pattern of each vibration data segment.

[0056] It should be understood that the preset time length in the present application can be selected as 5S, 10S, etc., which is not limited here. At the same time, in the present application, the noise data segment and the vibration data segment are based on the same preset time length, that is, in the subsequent determination process of whether the rear axle assembly is abnormal, the change of the noise pattern of the noise data segment and the change of the vibration pattern of the vibration data segment in the same preset time period are used to determine whether the rear axle assembly is abnormal.

[0057] In the present application, according to the change, it is determined whether the rear axle is abnormal, specifically including:

[0058] When the change is that the decibel value of the noise data is higher than the first preset threshold, and the noise data changes periodically and the vibration data is higher than the second preset threshold, it is determined that the rear axle is abnormal; when the change is that the decibel value of the noise data is in a preset range higher than the first preset threshold and the vibration data is lower than the third preset threshold, it is determined that the rear axle is abnormal; when the change is that the noise data and the vibration data change irregularly, it is determined that the rear axle is abnormal.

[0059] In the present embodiment, the reasons for the abnormality of the rear axle assembly of the vehicle mainly include that the gears inside the rear axle are not correctly engaged, the gear oil inside the rear axle assembly is not added or too little, or water or other impurities are entered into the inside.

[0060] For the abnormal noise and vibration of the rear axle caused by the incorrect meshing of gears, the customer will return the vehicle, causing significant cost loss and brand reputation loss. There is no big problem in the gear structure itself for the incorrect meshing of gears. When starting to mesh, there is only a small noise and vibration, which cannot be distinguished by human ear outside the rear axle assembly. However, with the passage of time and distance, the sound and vibration will increase, eventually causing a huge noise or shaking problem, which seriously affects the driving experience of customers, and eventually leads to vehicle return or part replacement, causing significant loss.

[0061] For the rear axle assembly without gear oil or with too little gear oil, the gear meshing of the vehicle during driving will also produce some large sound, but it will be covered by the noise of the engine. Without gear oil or with too little gear oil, the bearing inside the main reducer will be ablated, and then the gear will be worn out, causing the rear axle assembly to be scrapped. After driving through a water-covered road, mud enters the rear axle through the rear axle breather valve, and the mud mixes with the gear oil, causing the gear oil to emulsify. If the gear oil is not replaced in time, the lubricating effect of the gear oil will be reduced, and the gears inside the rear axle assembly will also be damaged, eventually causing the entire rear axle to be scrapped. Another situation is that the rear axle gear oil needs to be replaced regularly. If it is not replaced for a long time, the performance of the oil will decrease. Since the gears rotate continuously in the rear axle cavity, a lot of impurities will be generated, and the lubricity will decrease. If it is not replaced in time, it will cause the accelerated wear of the parts inside the rear axle, greatly reducing the service life of the parts.

[0062] These causes of abnormality of the rear axle assembly of the vehicle have only a small abnormal sound at the beginning of the abnormality, which cannot be identified. When the noise or vibration can be heard, the gears and bearings inside the rear axle have been damaged, and the entire rear axle assembly must be replaced, which not only causes significant loss, but also seriously affects the experience of customers and the brand benefits of the company.

[0063] The noise pattern change and the vibration pattern change are different for different abnormal causes. Therefore, according to the analysis of the noise data segment and the vibration data segment in the same preset time period, the noise pattern change corresponding to the noise data segment in the preset time period and the vibration pattern change corresponding to the vibration data segment in the preset time period can be determined. According to the noise pattern change and the vibration pattern change in the preset time period, whether the rear axle assembly of the vehicle is abnormal can be determined, specifically:

[0064] When the noise pattern of the vehicle within the preset time length is found to exist above the first preset threshold, and the noise pattern within the preset time length presents periodic changes, and the vibration pattern within the preset time length presents vibration above the second preset threshold, it is determined that the rear axle assembly of the vehicle is abnormal.

[0065] When the noise pattern of the vehicle within the preset time length is found to exist within the preset range above the first preset threshold, and the vibration pattern within the preset time length is found to exist below the third preset threshold, it is determined that the rear axle assembly of the vehicle is abnormal.

[0066] When the noise pattern of the vehicle within the preset time length and the vibration pattern within the preset time length both present irregular changes, it is determined that the rear axle assembly of the vehicle is abnormal.

[0067] In the present application, if the rear axle is abnormal, the cause of the abnormality is obtained, including determining the cause of the abnormality of the rear axle assembly of the vehicle according to the change. The cause of the abnormality includes: the gear engagement of the rear axle assembly of the vehicle is not matched; the gear oil in the rear axle assembly of the vehicle is not added or the amount of gear oil is below the preset amount; and there is foreign matter in the rear axle assembly of the vehicle.

[0068] In the present embodiment, the causes of the abnormality of the rear axle assembly of the vehicle include the gear engagement of the rear axle assembly of the vehicle is not matched, the gear oil in the rear axle assembly of the vehicle is not added or the amount of gear oil is below the preset amount, and there is foreign matter in the rear axle assembly of the vehicle.

[0069] In the present embodiment, for the case that the gear engagement of the rear axle assembly of the vehicle is not matched, the noise data will appear locally louder when the gear engagement is not matched, and since the position where the gear engagement is not matched will periodically appear when the speed remains unchanged, the local sound will periodically appear with whistling and whistling, and vibration will occur when running to the position where the gear engagement is not matched. Therefore, when the noise data segment of the vehicle within the preset time length is found to exist above the first preset threshold, and the noise data segment within the preset time length presents periodic changes, and the vibration data segment within the preset time length presents vibration above the second preset threshold, it is determined that the cause of the abnormality of the rear axle assembly of the vehicle is that the gear engagement of the rear axle assembly of the vehicle is not matched.

[0070] It should be understood that in the present application, the first preset threshold and the second preset threshold are different for different vehicles, and therefore the first preset threshold and the second preset threshold in the present application are set according to actual needs, which are not specifically limited here.

[0071] In the embodiment, when the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil added is less than the preset amount, the gears and bearings are in a dry grinding state, the noise will be in a larger sound, and the decibel of the noise data will exceed the set value. At the same time, since it is in a dry grinding state, the noise data not only exceeds the set value, but also maintains a small range of fluctuations within a certain range, and there is no pattern of suddenly exceeding a higher set value. At the same time, since the gears are only in a dry grinding state, there will be no large vibration. Therefore, when the obtained noise data segment of the vehicle within the preset time period is always within the preset range higher than the first preset threshold and the vibration data segment within the preset time period is always lower than the third preset threshold, it is determined that the cause of the abnormality of the rear axle assembly of the vehicle is that the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil added is less than the preset amount.

[0072] In the embodiment, when the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil added is less than the preset amount, the gears and bearings are in a dry grinding state, the noise data not only exceeds the set value, but also maintains a small range of fluctuations within a certain range. Since it is in a small range of fluctuations, the difference between the upper limit of the preset range and the first preset threshold is lower than the set threshold, which is set according to actual needs in the application and is not limited here.

[0073] In the embodiment, when the rear axle assembly of the vehicle is not filled with gear oil or the amount of gear oil added is less than the preset amount, the gears and bearings are in a dry grinding state, the noise data not only exceeds the set value, but also maintains a small range of fluctuations within a certain range. Since it is in a small range of fluctuations, the difference between the upper limit of the preset range and the first preset threshold is lower than the set threshold, which is set according to actual needs in the application and is not limited here.

[0074] Step S14: According to the abnormality cause, the vehicle brake system controls the vehicle accordingly.

[0075] In the embodiment, the causes of the abnormality of the rear axle assembly of the vehicle are different, the resulting abnormalities of the vehicle are different, and the effects on the rear axle assembly of the vehicle are also different. Some abnormalities may cause the rear axle assembly to be scrapped, and some may only cause slight wear of the gears of the rear axle assembly. Therefore, according to different causes of the abnormality of the rear axle assembly of the vehicle, the vehicle needs to be controlled accordingly. Therefore, the rear axle control module is connected with the brake system of the vehicle. According to the determined cause of the abnormality of the rear axle assembly of the vehicle, the vehicle is controlled by the brake system of the vehicle corresponding to the abnormality cause.

[0076] In the present application, the method further comprises outputting prompt information corresponding to the abnormal cause through the instrument of the vehicle when the brake system of the vehicle controls the vehicle according to the abnormal cause.

[0077] In the present embodiment, the rear axle control module is connected with the display of the vehicle, and prompt information corresponding to the cause is outputted to the display instrument of the vehicle according to the determined cause leading to the abnormality of the rear axle assembly of the vehicle.

[0078] The method for processing the abnormality of the rear axle assembly according to the present application can determine whether the rear axle assembly of the vehicle is abnormal according to the monitored noise data and vibration data. Meanwhile, the noise data and vibration data can be further analyzed to determine the specific cause leading to the abnormality of the rear axle assembly, so as to process the abnormality more targetedly. After the specific cause leading to the abnormality of the rear axle assembly is determined, the brake system of the vehicle can be controlled according to the specific cause to correspond to the specific cause, so as to avoid that the user performs the wrong processing mode to further damage the rear axle assembly of the vehicle after the abnormality of the rear axle assembly.

[0079] In the present application, step S14 specifically comprises: when the gear engagement of the rear axle assembly of the vehicle does not match, controlling the vehicle to maintain a first preset vehicle speed to travel through the brake system of the vehicle; or when the gear oil is not added or the amount of the gear oil is lower than a preset amount in the rear axle assembly of the vehicle, controlling the vehicle to emergency brake through the brake system of the vehicle; or when there is foreign matter in the rear axle assembly of the vehicle, controlling the vehicle to maintain a second preset vehicle speed to travel through the brake system of the vehicle.

[0080] In the present embodiment, Figure 2 is a rear axle assembly control strategy diagram in a method for processing the abnormality of the rear axle assembly according to an embodiment of the present application. Refer to Figure 2 Since the mismatch of the gear engagement belongs to the abnormality of the rear axle assembly of the vehicle caused by internal factors, the gear needs to be replaced at this time, so the vehicle does not need to be controlled by strict brake control, but in order to avoid that the vehicle speed is too fast to cause wear of other components in the rear axle assembly, the vehicle still needs to be controlled by a certain brake control. Therefore, at this time, the rear axle control module sends a control instruction corresponding to the cause of the abnormality according to the determined cause leading to the abnormality of the rear axle assembly of the vehicle, that is, the cause of the mismatch of the gear engagement, the brake system of the vehicle controls the vehicle to brake according to the received control instruction, so that the vehicle speed is reduced to less than or equal to 50Km / h, and the display instrument prompts the user to replace the gear, and the prompt information disappears after the problem is solved.

[0081] In the embodiment, the first preset vehicle speed is preferably 50Km / h, and can be set as a vehicle speed with other values according to actual needs, which is not specifically limited here.

[0082] In the embodiment, the first preset vehicle speed is preferably 50Km / h, and can be set as a vehicle speed with other values according to actual needs, which is not specifically limited here. Figure 2 Since the case that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle belongs to the abnormality of the rear axle assembly of the vehicle caused by external factors, if the vehicle continues to run, the components in the rear axle assembly of the vehicle can be seriously damaged, and finally only the rear axle assembly of the vehicle can be replaced or repaired, thereby causing significant economic losses. Since the case that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle belongs to the abnormality of the rear axle assembly of the vehicle caused by external factors, at this time, further damage to the rear axle assembly of the vehicle can be effectively avoided, and the user only needs to stop using the vehicle and timely add the gear oil to the rear axle assembly of the vehicle. Therefore, at this time, the rear axle control module determines the cause of the abnormality, that is, the cause of the abnormality of the rear axle assembly of the vehicle due to the fact that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle, issues a control instruction corresponding to the cause of the abnormality, the braking system of the vehicle controls the vehicle to brake urgently according to the received control instruction, controls the vehicle to stop, and prompts the user to add the gear oil to the rear axle assembly in the display instrument. The prompt information disappears after the problem is solved.

[0083] In the embodiment, the first preset vehicle speed is preferably 50Km / h, and can be set as a vehicle speed with other values according to actual needs, which is not specifically limited here. Figure 2 Since the case that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle belongs to the abnormality of the rear axle assembly of the vehicle caused by external factors, if the vehicle continues to run, the components in the rear axle assembly of the vehicle can be seriously damaged, and finally only the rear axle assembly of the vehicle can be replaced or repaired, thereby causing significant economic losses. Since the case that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle belongs to the abnormality of the rear axle assembly of the vehicle caused by external factors, at this time, further damage to the rear axle assembly of the vehicle can be effectively avoided, and the user only needs to stop using the vehicle and timely add the gear oil to the rear axle assembly of the vehicle. Therefore, at this time, the rear axle control module determines the cause of the abnormality, that is, the cause of the abnormality of the rear axle assembly of the vehicle due to the fact that the gear oil is not added or the amount of the gear oil is lower than the preset amount in the rear axle assembly of the vehicle, issues a control instruction corresponding to the cause of the abnormality, the braking system of the vehicle controls the vehicle to brake urgently according to the received control instruction, controls the vehicle to stop, and prompts the user to add the gear oil to the rear axle assembly in the display instrument. The prompt information disappears after the problem is solved.

[0084] In the embodiment, the first preset vehicle speed is preferably 50Km / h, and can be set as a vehicle speed with other values according to actual needs, which is not specifically limited here.

[0085] In the application, the method further comprises: setting a program in the rear axle control module by acquiring noise data and vibration data, after the vehicle is assembled and delivered, performing a driving test, when the sound exceeds (65-70) decibels or the vibration exceeds a set value, automatically analyzing the conditions that can be generated, and transmitting the information to the driver through the instrument to make the driver stop and check in time. If it is a gear oil leakage, the gear oil is added in time to avoid the problem of the whole axle being scrapped due to dry grinding of the gear and bearing. If it is a gear structure problem, the gear needs to be replaced to avoid the problem flowing into the market, causing customer complaints and damaging the company's image. If it is foreign matter, if it occurs before delivery, the gear oil is replaced in time, the debris is cleaned, and the problem vehicle is prevented from flowing into the market, causing customer complaints and damaging the company's image; if it occurs during the customer's use, the customer can also replace the oil and clean the debris in time to avoid damage to the rear axle and cause unnecessary property and time loss.

[0086] By the method for processing rear axle assembly abnormalities of the application, the problem can be found at the initial stage and solved in time. The gear and bearing inside the rear axle are prevented from being damaged, and the whole rear axle assembly needs to be replaced, which not only causes great loss but also seriously affects the customer experience and the brand benefit of the company.

[0087] The method for processing rear axle assembly abnormalities described in the application is realized by adding sensors and a rear axle control module on the rear axle housing and combining with the brake system. The rear axle assembly of the vehicle cannot find the gear problem inside the rear axle at the initial stage due to structural limitations, such as gear structure defects, gear oil leakage, and foreign matter such as sand entering the rear axle, which causes abnormal wear of the gear and bearing, NVH (noise, vibration, and harshness) problems such as rear axle noise and vibration, gear and bearing damage, reduced service life of parts, and customer complaints such as whole axle scrapping, which seriously affects the customer experience and the brand benefit of the company.

[0088] The method for processing rear axle assembly abnormalities described in the application only needs to add noise and vibration sensors and a rear axle control module on the rear axle housing and combine with the brake system, which does not change the overall structure of the rear axle, has a simple structure, and is easy to realize.

[0089] The method for processing rear axle assembly abnormalities described in the application collects the noise and vibration data inside the rear axle in real time, and feeds back the results to the rear axle control module for analysis and processing. When a problem occurs, the driver is notified through the instrument display. The driver can always know the state of the rear axle, which increases the intelligence of the vehicle and improves the driving pleasure.

[0090] The method for processing rear axle assembly abnormalities provided in the application can find problems at the initial stage of problem generation, inform the driver in time to solve the problems, avoid the serious problems, and is a forward-looking control strategy and an intelligent strategy.

[0091] The method for processing rear axle assembly abnormalities provided in the application can confirm the specific cause of the rear axle problem generation through periodic analysis of noise and vibration values, is accurate and fast, reduces unnecessary troubles, saves time and labor, and saves money.

[0092] The embodiment of the application further provides a system for processing rear axle assembly abnormalities. Figure 3 Figure 1 is a schematic diagram of a system for processing rear axle assembly abnormalities according to an embodiment of the application. Referring to Figure 1, Figure 3 The system 300 for processing rear axle assembly abnormalities provided in the application comprises:

[0093] A data acquisition module 301 acquires noise data and vibration data of a rear axle assembly of a vehicle through noise sensors and vibration sensors arranged on a rear axle housing of the vehicle.

[0094] A rear axle control module 302 is configured to determine whether the rear axle is abnormal according to the noise data and the vibration data, acquire an abnormal cause if the rear axle is abnormal, and send a control signal corresponding to the abnormal cause according to the abnormal cause.

[0095] A vehicle control module 303 is configured to control a braking system of the vehicle according to the received control signal.

[0096] Optionally, the rear axle control module 302 comprises:

[0097] A data acquisition module is configured to acquire a change condition of the noise data and the vibration data within a preset time length.

[0098] An abnormality determination module is configured to determine whether the rear axle is abnormal according to the change condition.

[0099] Optionally, the abnormality determination module comprises:

[0100] A first abnormality module is configured to determine that the rear axle is abnormal when the change condition is that a decibel value of the noise data is higher than a first preset threshold value, the noise data changes periodically, and the vibration data is higher than a second preset threshold value.

[0101] Optionally, the abnormality determination module comprises:

[0102] The second abnormality module is configured to determine that the rear axle is abnormal when the change condition is that the decibel value of the noise data is higher than a first preset threshold and the vibration data is lower than a third preset threshold.

[0103] Optionally, the abnormality determination module comprises:

[0104] The third abnormality module is configured to determine that the rear axle is abnormal when the change condition is that the noise data and the vibration data change irregularly.

[0105] Optionally, the abnormality reason obtained by the rear axle control module 302 comprises that gear engagement of the rear axle assembly of the vehicle does not match, or gear oil is not added or the amount of gear oil in the rear axle assembly of the vehicle is lower than a preset amount, or there is foreign matter in the rear axle assembly of the vehicle.

[0106] Optionally, the vehicle control module 303 comprises:

[0107] When the gear engagement of the rear axle assembly of the vehicle does not match, the vehicle is controlled to maintain a first preset vehicle speed for driving by the braking system of the vehicle.

[0108] When the gear oil is not added or the amount of gear oil in the rear axle assembly of the vehicle is lower than the preset amount, the vehicle is controlled to emergency brake by the braking system of the vehicle.

[0109] When there is foreign matter in the rear axle assembly of the vehicle, the vehicle is controlled to maintain a second preset vehicle speed for driving by the braking system of the vehicle.

[0110] Optionally, the system 300 further comprises:

[0111] The information prompting module is configured to output prompt information corresponding to the abnormality reason through the instrument of the vehicle when the braking system of the vehicle controls the vehicle according to the abnormality reason.

[0112] The embodiment of the application also provides a vehicle, which can specifically comprise the system for processing the abnormality of the rear axle assembly and be used for executing the steps in the method for processing the abnormality of the rear axle assembly.

[0113] The above merely describes the preferred embodiments of the application and is not used to limit the application, and any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the application shall be included in the protection scope of the application.

Claims

1. A method of handling rear axle assembly anomalies, characterized by, The method comprises: acquiring noise data and vibration data of a rear axle assembly of a vehicle; determining whether the rear axle is abnormal according to the noise data and the vibration data; if the rear axle is abnormal, acquiring the abnormal reason; controlling the vehicle by a braking system of the vehicle according to the abnormal reason; determining whether the rear axle is abnormal according to the noise data and the vibration data, comprising: acquiring a change condition of the noise data and the vibration data within a preset time length; determining whether the rear axle is abnormal according to the change condition.

2. The method of claim 1, wherein, The determining whether the rear axle is abnormal according to the change condition comprises: if the change condition is that a decibel value of the noise data is higher than a first preset threshold value, and the noise data changes periodically and the vibration data is higher than a second preset threshold value, it is determined that the rear axle is abnormal.

3. The method of claim 1, wherein, The determining whether the rear axle is abnormal according to the change condition comprises: if the change condition is that the decibel value of the noise data is in a preset range higher than the first preset threshold value and the vibration data is lower than a third preset threshold value, it is determined that the rear axle is abnormal.

4. The method of claim 1, wherein, The determining whether the rear axle is abnormal according to the change condition comprises: if the change condition is that the noise data and the vibration data change irregularly, it is determined that the rear axle is abnormal.

5. The method according to any one of claims 1 to 4, characterized in that, The abnormal reason comprises: gear engagement of the rear axle assembly of the vehicle does not match; or gear oil is not added or the amount of gear oil is lower than a preset amount in the rear axle assembly of the vehicle; or there is foreign matter in the rear axle assembly of the vehicle.

6. The method of claim 5, wherein, The controlling the vehicle by the braking system of the vehicle according to the abnormal reason comprises: if the gear engagement of the rear axle assembly of the vehicle does not match, controlling the vehicle to maintain a first preset vehicle speed by the braking system of the vehicle; or if the gear oil is not added or the amount of gear oil is lower than the preset amount in the rear axle assembly of the vehicle, controlling the vehicle to emergency brake by the braking system of the vehicle; or if there is foreign matter in the rear axle assembly of the vehicle, controlling the vehicle to maintain a second preset vehicle speed by the braking system of the vehicle.

7. The method of claim 1, wherein, When the vehicle is controlled by the braking system of the vehicle according to the abnormal reason, a prompt information corresponding to the abnormal reason is output by an instrument of the vehicle.

8. A system for handling rear axle assembly anomalies, characterized by, The system comprises: a data acquisition module, acquiring noise data and vibration data of a rear axle assembly of a vehicle by noise sensors and vibration sensors arranged on a rear axle housing of the vehicle; a rear axle control module, determining whether the rear axle is abnormal according to the noise data and the vibration data, acquiring the abnormal reason if the rear axle is abnormal, and sending a control signal corresponding to the abnormal reason according to the abnormal reason; a vehicle control module, controlling the vehicle by a braking system of the vehicle according to the received control signal; the rear axle control module comprises: a data acquisition module, acquiring a change condition of the noise data and the vibration data within a preset time length; An abnormality determining module is configured to determine whether the rear axle is abnormal according to the change.

9. A vehicle characterized by comprising: The vehicle comprises a noise sensor and a vibration sensor arranged on a rear axle housing of the vehicle, a rear axle control module connected with the noise sensor and the vibration sensor, and comprises: the system as claimed in claim 8 is configured to execute the steps in the method for processing the abnormality of the rear axle assembly as claimed in any one of claims 1-7.

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