Vehicle clutch protection method, device and computer equipment
By calculating the heat generated by clutch slippage and predicting clutch temperature using a neural network model, the problem of inaccurate clutch temperature measurement in AMT vehicles was solved, achieving effective clutch protection and improved safety.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- 一汽解放青岛汽车有限公司
- Filing Date
- 2025-01-07
- Publication Date
- 2026-04-28
AI Technical Summary
Inaccurate clutch temperature measurement in existing AMT vehicles leads to a shortened clutch lifespan and affects driving safety. Furthermore, temperature sensors are expensive or have large estimation errors.
The heat generated by clutch slippage is calculated by using engine and transmission operating parameters. Combined with clutch parameters and initial temperature, a neural network model is used to predict the current clutch temperature and determine the clutch protection strategy.
It can accurately measure clutch temperature without the need for a temperature sensor, effectively protecting the clutch, extending its service life, and improving driving safety.
Smart Images
Figure CN119749558B_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of intelligent driving technology, and in particular to a vehicle clutch protection method, device, and computer equipment. Background Technology
[0002] Commercial vehicle power transmission technology is developing rapidly, with automated mechanical transmissions (AMT) being the main development trend and the proportion of users increasing year by year.
[0003] Currently, AMT mainly uses a central dry clutch. When the clutch is engaged, power can be transmitted, and when the clutch is disengaged, power can be interrupted. If the clutch temperature is too high or the clutch is kept at a high temperature for a long time, it will not only have an adverse effect on the service life of the clutch, but also reduce the clutch's power transmission capacity, which will seriously affect driving safety.
[0004] AMTs generally have clutch temperature protection, but the clutch temperature is usually measured by a temperature sensor, which is expensive. Some AMTs may also estimate the clutch temperature, but the estimation result has a large error, which can have serious consequences for the use of the clutch, not only affecting the service life of the clutch, but also affecting driving safety. Summary of the Invention
[0005] Therefore, it is necessary to provide a vehicle clutch protection method, device, and computer equipment that can accurately measure the current temperature of the clutch and protect the clutch, in order to address the above-mentioned technical problems.
[0006] Firstly, this application provides a method for protecting a vehicle clutch. The method includes:
[0007] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0008] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0009] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0010] In one embodiment, the engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, engine actual torque, and engine loss torque;
[0011] Accordingly, based on the engine operating parameters and transmission operating parameters of the target vehicle, the heat generated by clutch slippage in the target vehicle is determined, including:
[0012] Determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration;
[0013] Determine the net engine torque of the target vehicle based on the actual engine torque, engine rotation torque, and engine loss torque.
[0014] The clutch protection trigger condition is determined based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0015] When the clutch protection is triggered, the heat generated by clutch slippage in the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0016] In one embodiment, the transmission operating parameters include the transmission output shaft speed;
[0017] Accordingly, based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters, the clutch protection trigger condition is determined, including:
[0018] Determine the speed difference between the engine speed and the transmission output shaft speed;
[0019] The clutch protection trigger condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0020] In one embodiment, the heat generated by clutch slippage of the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle, including:
[0021] The difference between the engine speed and the transmission output shaft speed is used as the first value;
[0022] The heat generated by clutch slippage in the target vehicle is determined by multiplying the engine's net torque by the first value.
[0023] In one embodiment, determining the current clutch temperature based on clutch slippage heat generation, clutch parameters, and initial clutch temperature includes:
[0024] The first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch;
[0025] Determine the clutch heat dissipation based on the first temperature and the current ambient temperature;
[0026] The current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0027] In one embodiment, the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:
[0028] Accordingly, the current clutch temperature is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters, including:
[0029] The difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch.
[0030] Determine the current temperature of the clutch based on the effective heat of the clutch and the clutch parameters.
[0031] In one embodiment, a clutch protection strategy for the target vehicle is determined based on the current clutch temperature, including:
[0032] Determine the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch;
[0033] Determine the clutch protection strategy for the target vehicle based on the clutch overheating status.
[0034] Secondly, this application also provides a vehicle clutch protection device. The device includes:
[0035] The first determining module is used to determine the heat generated by clutch slippage of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0036] The second determining module is used to determine the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and the initial temperature of the clutch; wherein, the initial temperature of the clutch is the initial ambient temperature.
[0037] The third determination module is used to determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0038] Thirdly, this application also provides a computer device. The computer device includes a memory and a processor, the memory storing a computer program, and the processor executing the computer program to perform the following steps:
[0039] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage of the target vehicle; wherein, the initial clutch temperature is the initial ambient temperature;
[0040] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature.
[0041] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0042] Fourthly, this application also provides a computer-readable storage medium. The computer-readable storage medium stores a computer program thereon, which, when executed by a processor, performs the following steps:
[0043] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0044] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0045] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0046] Fifthly, this application also provides a computer program product. The computer program product includes a computer program that, when executed by a processor, performs the following steps:
[0047] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0048] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0049] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0050] The aforementioned vehicle clutch protection method, device, and computer equipment determine the clutch slippage heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters. Based on the clutch slippage heat generation, clutch parameters, and initial clutch temperature, the current clutch temperature is determined; where the initial clutch temperature is the initial ambient temperature. Based on the current clutch temperature, a clutch protection strategy for the target vehicle is determined. This application eliminates the need for a temperature sensor on the clutch to accurately determine the current clutch temperature and, based on this temperature, to determine the clutch protection strategy for the target vehicle. This not only effectively protects the clutch, preventing excessive clutch temperature from affecting its service life, but also effectively improves driving safety. Attached Figure Description
[0051] Figure 1 This is an application environment diagram of the vehicle clutch protection method provided in this embodiment;
[0052] Figure 2 This is a flowchart illustrating the first vehicle clutch protection method provided in this embodiment;
[0053] Figure 3This is a schematic diagram of the process for determining the heat generated by clutch slippage in a target vehicle, provided in this embodiment.
[0054] Figure 4 This is a schematic diagram of the process for determining the current temperature of the clutch provided in this embodiment;
[0055] Figure 5 This is a flowchart illustrating the process of determining the clutch protection strategy for a target vehicle in this embodiment.
[0056] Figure 6 This is a flowchart illustrating the second vehicle clutch protection method provided in this embodiment;
[0057] Figure 7 This is a structural block diagram of a vehicle clutch protection device provided in this embodiment;
[0058] Figure 8 This is an internal structural diagram of the computer device provided in this embodiment. Detailed Implementation
[0059] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.
[0060] The vehicle clutch protection method provided in this application embodiment can be executed by the target vehicle 102 or by the server 104. That is, this method can be applied to vehicles such as... Figure 1 The application environment is shown. Taking server 104 as an example, server 104 determines the clutch slippage heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters. Based on the clutch slippage heat generation, clutch parameters, and initial clutch temperature, the current clutch temperature is determined. Based on the current clutch temperature, the clutch protection strategy for the target vehicle is determined. The initial clutch temperature is the initial ambient temperature.
[0061] Server 104 can be implemented using a standalone server or a server cluster consisting of multiple servers. Target terminal 102 refers to a new energy vehicle. This application does not limit the type, series, or model of the new energy vehicle. The target vehicle can be a medium-sized, heavy-duty, or light-duty electric vehicle, or a small electric vehicle.
[0062] In one embodiment, such as Figure 2 As shown, a vehicle clutch protection method is provided, which is applied to... Figure 1 Taking the server in the example of this, such as Figure 2 As shown, it includes the following steps:
[0063] S201, based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0064] The target vehicle refers to the vehicle whose current clutch temperature needs to be determined. Engine operating parameters refer to the engine-related parameters of the target vehicle. Transmission operating parameters refer to the transmission-related parameters of the target vehicle; in this application, the transmission operating parameters include at least the transmission output shaft speed. Clutch slippage heat generation refers to the heat generated by friction during clutch operation.
[0065] Optionally, in this embodiment, the engine operating parameters and transmission operating parameters of the target vehicle are input into the trained first neural network model, and the first neural network model outputs the heat generated by clutch slippage of the target vehicle.
[0066] It should be noted that the engine operating parameters and transmission operating parameters in this application can be obtained based on the relevant sensors in the target vehicle, without the need to add additional sensors.
[0067] S202, determine the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature.
[0068] The initial clutch temperature refers to the initial ambient temperature, which can be the ambient temperature at which the target vehicle begins operation. At this point, the ambient temperature and the clutch temperature are highly similar; therefore, the initial ambient temperature is used as the initial clutch temperature. The current clutch temperature refers to the clutch temperature at the current moment.
[0069] Optionally, in this embodiment, the heat generated by clutch slippage, clutch parameters, and initial clutch temperature are input into a trained second neural network model, and the second neural network model outputs the current clutch temperature.
[0070] S203, determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0071] As an optional implementation of this application, a temperature level is determined based on the current clutch temperature, and a clutch protection strategy for the target vehicle is determined based on the temperature level. Different temperature levels have different clutch protection strategies.
[0072] The aforementioned vehicle clutch protection method determines the clutch slippage heat generation of the target vehicle based on the engine and transmission operating parameters. It then determines the current clutch temperature based on the clutch slippage heat generation, clutch parameters, and the initial clutch temperature; where the initial clutch temperature is the initial ambient temperature. Finally, it determines the clutch protection strategy for the target vehicle based on the current clutch temperature. This application eliminates the need for a temperature sensor on the clutch to accurately determine the current clutch temperature and, based on this temperature, to determine the clutch protection strategy for the target vehicle. This not only effectively protects the clutch, preventing excessive clutch temperature from affecting its service life, but also significantly improves driving safety.
[0073] In one embodiment, engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, actual engine torque, and engine loss torque. Based on these parameters, in order to determine the triggering timing of the heat generation from clutch slippage in the target vehicle, such as... Figure 3 As shown, one optional implementation of S201 includes:
[0074] S301, determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration.
[0075] Optionally, in this embodiment, the engine rotational torque of the target vehicle is determined based on the engine's rotating mass and rotational acceleration, as well as the conversion parameters between engine rotational torque and engine speed acceleration. Specifically, the engine rotational torque of the target vehicle can be determined using the following formula (1):
[0076] (1)
[0077] In formula (1), A represents the conversion parameter between engine rotational torque and engine speed acceleration, which is a fixed value.
[0078] S302 determines the net engine torque of the target vehicle based on the actual engine torque, engine rotational torque, and engine loss torque.
[0079] Optionally, in this embodiment, the net engine torque of the target vehicle is obtained by subtracting the engine rotation torque and the engine loss torque from the actual engine torque in sequence.
[0080] S303 determines the clutch protection trigger condition based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0081] Optionally, in this embodiment, the transmission operating parameters include the transmission output shaft speed.
[0082] Optionally, in this embodiment, the speed difference between the engine speed and the transmission output shaft speed is determined. The clutch protection trigger condition is determined based on the relationships between the engine net torque and the torque threshold, the clutch pressure plate position and the position threshold, and the speed difference and the difference threshold. Specifically, if the engine net torque is greater than the torque threshold, the clutch pressure plate position is greater than the position threshold, and the speed difference is greater than the difference threshold, the clutch protection is triggered. Otherwise, the clutch protection is not triggered. The position threshold can be the clutch semi-engaged position; the clutch semi-engaged position refers to the position where the clutch pressure plate just contacts the driven plate. The clutch pressure plate position can be determined by a displacement sensor.
[0083] S304, when the clutch protection is triggered, determine the heat generated by clutch slippage of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0084] Optionally, in this embodiment, the difference between the engine speed and the transmission output shaft speed is used as the first value. Based on the product of the engine net torque and the first value, the clutch slippage heat generation of the target vehicle is determined; specifically, the clutch slippage heat generation power of the target vehicle can be determined using the following formula (2), and then the clutch slippage heat generation power can be obtained by integrating the slippage heat generation power with the slippage heat generation time:
[0085] (2)
[0086] In formula (2), B refers to the conversion parameter between the engine net torque and the heat generated by clutch slippage, which is a fixed value.
[0087] In this embodiment, the engine rotational torque of the target vehicle is determined based on the engine's rotating mass and rotational acceleration. The net engine torque of the target vehicle is determined based on the actual engine torque, engine rotational torque, and engine loss torque. The clutch protection trigger condition is determined based on the net engine torque, clutch pressure plate position, engine speed, and transmission operating parameters. If the clutch protection trigger condition is "triggered protection," the clutch slippage heat generation of the target vehicle is determined based on the engine and transmission operating parameters. This embodiment provides trigger conditions for determining the clutch slippage heat generation of the target vehicle. Based on these trigger conditions, the clutch slippage heat generation of the target vehicle is determined, avoiding wasted computational resources and reducing unnecessary resource consumption.
[0088] In one embodiment, to more accurately determine the current clutch temperature of the target vehicle, such as Figure 4 As shown, one optional implementation of S202 includes:
[0089] S401, determine the first temperature based on the heat generated by clutch slippage and the initial temperature of the clutch.
[0090] The first temperature refers to the clutch temperature estimated based on the heat generated by clutch slippage and the initial temperature of the clutch.
[0091] Optionally, in this embodiment, the clutch temperature rise is predicted based on the heat generated by clutch slippage. The sum of the clutch temperature rise and the initial clutch temperature is taken as the first temperature.
[0092] Optionally, in this embodiment, the heat generated by clutch slippage and the initial temperature of the clutch are input into the temperature prediction model, and the temperature prediction model outputs a first temperature. The temperature prediction model can be a neural network model.
[0093] S402 determines the clutch heat dissipation based on the first temperature and the current ambient temperature.
[0094] Optionally, in this embodiment, the clutch cooling power can be determined based on the following formula (3). By integrating the clutch cooling power with the cooling time, the clutch cooling amount can be obtained:
[0095] Clutch cooling power = h × S × (first temperature - current ambient temperature) (3)
[0096] In formula (3), h is the heat transfer coefficient of the clutch in the atmosphere, which is a fixed value; S is the heat transfer area, which is a fixed value.
[0097] S403 determines the current temperature of the clutch based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0098] Optionally, in this embodiment, the difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch. The current temperature of the clutch is determined based on the effective heat of the clutch and the clutch parameters.
[0099] In this embodiment, the current temperature of the clutch can be determined based on the effective heat of the clutch, the clutch parameters, and the following formula (4):
[0100] kQ=cm(T-Ti ) (4)
[0101] In formula (4), KQ is the effective heat of the clutch; c is the specific heat capacity of the clutch material, which is a fixed value; m is the mass of the clutch pressure plate, which is not a fixed value; Ti is the initial temperature of the clutch; and T is the current temperature of the clutch.
[0102] In this embodiment, a first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch. The clutch heat dissipation is then determined based on the first temperature and the current ambient temperature. The difference between the clutch heat generated by slippage and the clutch heat dissipation is taken as the effective heat of the clutch. Based on the effective heat of the clutch and the clutch parameters, the current clutch temperature can be determined more accurately.
[0103] Based on the above embodiments, in order to determine the clutch protection strategy for the target vehicle, such as Figure 5 As shown, one optional implementation of S203 includes:
[0104] S501 determines the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch.
[0105] Optionally, in this embodiment, if the effective heat Q of the clutch is greater than the set first heat threshold Q1, or the current temperature T of the clutch is greater than the set first temperature threshold T1, then the clutch overheating state is the first overheating state.
[0106] If the effective heat Q of the clutch is greater than the second heat threshold Q2, or the current temperature T of the clutch is greater than the set second temperature threshold T2, then the clutch overheating state is the second overheating state.
[0107] If the effective heat Q of the clutch is greater than the third heat threshold Q3, or the current temperature T of the clutch is greater than the set third temperature threshold T3, then the clutch overheating state is the third overheating state.
[0108] S502 determines the clutch protection strategy for the target vehicle based on the clutch overheating condition.
[0109] Optionally, in this embodiment, if the clutch is in the first overheating state, the clutch protection strategy is to remind the driver "clutch temperature is high" through the vehicle display screen, and change the starting gear to the lowest gear of the transmission, temporarily not increasing the clutch engagement speed.
[0110] If the clutch overheats to the second overheat state, the clutch protection strategy is to alert the driver to "clutch temperature overload" via the vehicle display screen and switch the starting gear to the lowest gear of the transmission to accelerate the clutch engagement speed.
[0111] If the clutch overheats to the third overheat state, the clutch protection strategy is to remind the driver via the vehicle display screen that "the clutch temperature is too high, please stop the vehicle to cool down," and shift the gear to neutral to allow the clutch to cool down before shifting into gear again.
[0112] In one embodiment, such as Figure 6 As shown, one possible implementation of the vehicle clutch protection method is as follows:
[0113] S601 determines the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration.
[0114] S602 determines the net engine torque of the target vehicle based on the actual engine torque, engine rotational torque, and engine loss torque.
[0115] S603 determines the speed difference between the engine speed and the transmission output shaft speed.
[0116] S604 determines the clutch protection trigger condition based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0117] S605, when the clutch protection is triggered, uses the difference between the engine speed and the transmission output shaft speed as the first value.
[0118] S606 determines the heat generated by clutch slippage in the target vehicle based on the product of the engine net torque and the first value.
[0119] S607, the first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch.
[0120] S608 determines the clutch heat dissipation based on the first temperature and the current ambient temperature.
[0121] S609 uses the difference between the heat generated by clutch slippage and the heat dissipation of the clutch as the effective heat of the clutch.
[0122] S610 determines the current clutch temperature based on the clutch's effective heat and clutch parameters.
[0123] S611 determines the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch.
[0124] S612 determines the clutch protection strategy for the target vehicle based on the clutch overheating condition.
[0125] In this embodiment, the heat generated by clutch slippage in the target vehicle is determined based on the engine and transmission operating parameters. The current clutch temperature is then determined based on the clutch slippage heat, clutch parameters, and the initial clutch temperature; the initial clutch temperature is the initial ambient temperature. Based on the current clutch temperature, a clutch protection strategy for the target vehicle is determined. This application eliminates the need for a temperature sensor on the clutch to accurately determine the current clutch temperature and, based on this temperature, to determine the clutch protection strategy for the target vehicle. This not only effectively protects the clutch and prevents excessive clutch temperature from affecting its service life, but also significantly improves driving safety.
[0126] Based on the same inventive concept, this application also provides a vehicle clutch protection device for implementing the vehicle clutch protection method described above. The solution provided by this device is similar to the solution described in the above method; therefore, the specific limitations of the vehicle clutch protection device embodiment provided below can be found in the limitations of the vehicle clutch protection method described above, and will not be repeated here.
[0127] In one embodiment, such as Figure 7 As shown, a vehicle clutch protection device 1 is provided, comprising:
[0128] The first determining module 10 is used to determine the heat generated by clutch slippage of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0129] The second determining module 20 is used to determine the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and the initial temperature of the clutch; wherein, the initial temperature of the clutch is the initial ambient temperature.
[0130] The third determining module 30 is used to determine the clutch protection strategy of the target vehicle based on the current clutch temperature.
[0131] The vehicle clutch protection device 1 in this embodiment determines the clutch slippage heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle. Based on the clutch slippage heat generation, clutch parameters, and the initial clutch temperature, the current clutch temperature is determined; wherein the initial clutch temperature is the initial ambient temperature. Based on the current clutch temperature, a clutch protection strategy for the target vehicle is determined. This application eliminates the need to install a temperature sensor on the clutch to accurately determine the current clutch temperature and, based on this temperature, determine the clutch protection strategy for the target vehicle. This not only effectively protects the clutch, preventing excessive clutch temperature from affecting its service life, but also effectively improves driving safety.
[0132] In one embodiment, engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, actual engine torque, and engine loss torque; based on this, the above... Figure 7 The first determining module 10 is also specifically used for:
[0133] Determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration;
[0134] Determine the net engine torque of the target vehicle based on the actual engine torque, engine rotation torque, and engine loss torque.
[0135] The clutch protection trigger condition is determined based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0136] When the clutch protection is triggered, the heat generated by clutch slippage in the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0137] In one embodiment, the transmission operating parameters include the transmission output shaft speed; based on this, the upper... Figure 7 The first determining module 10 is also specifically used for:
[0138] Determine the speed difference between the engine speed and the transmission output shaft speed;
[0139] The clutch protection trigger condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0140] In one embodiment, the upper Figure 7 The first determining module 10 is also specifically used for:
[0141] The difference between the engine speed and the transmission output shaft speed is used as the first value;
[0142] The heat generated by clutch slippage in the target vehicle is determined by multiplying the engine's net torque by the first value.
[0143] In one embodiment, the upper Figure 7 The second determining module 20 is also specifically used for:
[0144] The first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch;
[0145] Determine the clutch heat dissipation based on the first temperature and the current ambient temperature;
[0146] The current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0147] In one embodiment, the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity, based on which the upper... Figure 7 The second determining module 20 is also specifically used for:
[0148] The difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch.
[0149] Determine the current temperature of the clutch based on the effective heat of the clutch and the clutch parameters.
[0150] In one embodiment, the upper Figure 7 The third determining module 30 is also specifically used for:
[0151] Determine the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch;
[0152] Determine the clutch protection strategy for the target vehicle based on the clutch overheating status.
[0153] The modules in the aforementioned vehicle clutch protection device can be implemented entirely or partially through software, hardware, or a combination thereof. These modules can be embedded in or independent of the processor in a computer device, or stored in the memory of a computer device as software, so that the processor can call and execute the corresponding operations of each module.
[0154] In one embodiment, a computer device is provided, the internal structure of which can be shown as follows: Figure 8As shown, the computer device includes a processor, memory, input / output interface, communication interface, display unit, and input device. The processor, memory, and input / output interface are connected via a system bus, and the communication interface, display unit, and input device are also connected to the system bus via the input / output interface. The processor provides computing and control capabilities. The memory includes non-volatile storage media and internal memory. The non-volatile storage media stores the operating system and computer programs. The internal memory provides an environment for the operation of the operating system and computer programs in the non-volatile storage media. The input / output interface is used for exchanging information between the processor and external devices. The communication interface is used for wired or wireless communication with external terminals; wireless communication can be achieved through Wi-Fi, mobile cellular networks, NFC (Near Field Communication), or other technologies. When executed by the processor, the computer program implements a vehicle clutch protection method. The display unit is used to form a visually visible image and can be a display screen, projection device, or virtual reality imaging device. The display screen can be an LCD screen or an e-ink screen. The input device of the computer device can be a touch layer covering the display screen, or buttons, trackballs, or touchpads set on the casing of the computer device, or external keyboards, touchpads, or mice, etc.
[0155] Those skilled in the art will understand that Figure 8 The structure shown is merely a block diagram of a portion of the structure related to the present application and does not constitute a limitation on the computer device to which the present application is applied. Specific computer devices may include more or fewer components than those shown in the figure, or combine certain components, or have different component arrangements.
[0156] In one embodiment, a computer device is provided, including a memory and a processor, wherein the memory stores a computer program, and the processor executes the computer program to perform the following steps:
[0157] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0158] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0159] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0160] In one embodiment, when the processor executes the computer program, it also performs the following steps: engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, engine actual torque, and engine loss torque;
[0161] Accordingly, based on the engine operating parameters and transmission operating parameters of the target vehicle, the heat generated by clutch slippage in the target vehicle is determined, including:
[0162] Determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration;
[0163] Determine the net engine torque of the target vehicle based on the actual engine torque, engine rotation torque, and engine loss torque.
[0164] The clutch protection trigger condition is determined based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0165] When the clutch protection is triggered, the heat generated by clutch slippage in the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0166] In one embodiment, when the processor executes the computer program, it further performs the following steps: the transmission operating parameters include the transmission output shaft speed;
[0167] Accordingly, based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters, the clutch protection trigger condition is determined, including:
[0168] Determine the speed difference between the engine speed and the transmission output shaft speed;
[0169] The clutch protection trigger condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0170] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining the heat generated by clutch slippage in the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle, including:
[0171] The difference between the engine speed and the transmission output shaft speed is used as the first value;
[0172] The heat generated by clutch slippage in the target vehicle is determined by multiplying the engine's net torque by the first value.
[0173] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and the initial temperature of the clutch, including:
[0174] The first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch;
[0175] Determine the clutch heat dissipation based on the first temperature and the current ambient temperature;
[0176] The current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0177] In one embodiment, the processor, when executing the computer program, also performs the following steps: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity:
[0178] Accordingly, the current clutch temperature is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters, including:
[0179] The difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch.
[0180] Determine the current temperature of the clutch based on the effective heat of the clutch and the clutch parameters.
[0181] In one embodiment, when the processor executes the computer program, it further performs the following steps: determining a clutch protection strategy for the target vehicle based on the current clutch temperature, including:
[0182] Determine the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch;
[0183] Determine the clutch protection strategy for the target vehicle based on the clutch overheating status.
[0184] In one embodiment, a computer-readable storage medium is provided having a computer program stored thereon, the computer program performing the following steps when executed by a processor:
[0185] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0186] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0187] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0188] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, engine actual torque, and engine loss torque;
[0189] Accordingly, based on the engine operating parameters and transmission operating parameters of the target vehicle, the heat generated by clutch slippage in the target vehicle is determined, including:
[0190] Determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration;
[0191] Determine the net engine torque of the target vehicle based on the actual engine torque, engine rotation torque, and engine loss torque.
[0192] The clutch protection trigger condition is determined based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0193] When the clutch protection is triggered, the heat generated by clutch slippage in the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0194] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: the transmission operating parameters include the transmission output shaft speed;
[0195] Accordingly, based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters, the clutch protection trigger condition is determined, including:
[0196] Determine the speed difference between the engine speed and the transmission output shaft speed;
[0197] The clutch protection trigger condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0198] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the heat generated by clutch slippage of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle, including:
[0199] The difference between the engine speed and the transmission output shaft speed is used as the first value;
[0200] The heat generated by clutch slippage in the target vehicle is determined by multiplying the engine's net torque by the first value.
[0201] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and the initial temperature of the clutch, including:
[0202] The first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch;
[0203] Determine the clutch heat dissipation based on the first temperature and the current ambient temperature;
[0204] The current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0205] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity.
[0206] Accordingly, the current clutch temperature is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters, including:
[0207] The difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch.
[0208] Determine the current temperature of the clutch based on the effective heat of the clutch and the clutch parameters.
[0209] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining a clutch protection strategy for the target vehicle based on the current clutch temperature, including:
[0210] Determine the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch;
[0211] Determine the clutch protection strategy for the target vehicle based on the clutch overheating status.
[0212] In one embodiment, a computer program product is provided, including a computer program that, when executed by a processor, performs the following steps:
[0213] Based on the engine operating parameters and transmission operating parameters of the target vehicle, determine the heat generated by clutch slippage in the target vehicle.
[0214] The current temperature of the clutch is determined based on the heat generated by clutch slippage, clutch parameters, and initial clutch temperature; where the initial clutch temperature is the initial ambient temperature.
[0215] Determine the clutch protection strategy for the target vehicle based on the current clutch temperature.
[0216] In one embodiment, when the computer program is executed by the processor, it further implements the following steps: engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, engine actual torque, and engine loss torque;
[0217] Accordingly, based on the engine operating parameters and transmission operating parameters of the target vehicle, the heat generated by clutch slippage in the target vehicle is determined, including:
[0218] Determine the engine rotation torque of the target vehicle based on the engine rotational mass and engine rotational acceleration;
[0219] Determine the net engine torque of the target vehicle based on the actual engine torque, engine rotation torque, and engine loss torque.
[0220] The clutch protection trigger condition is determined based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters.
[0221] When the clutch protection is triggered, the heat generated by clutch slippage in the target vehicle is determined based on the engine operating parameters and transmission operating parameters of the target vehicle.
[0222] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: the transmission operating parameters include the transmission output shaft speed;
[0223] Accordingly, based on the engine net torque, clutch pressure plate position, engine speed, and transmission operating parameters, the clutch protection trigger condition is determined, including:
[0224] Determine the speed difference between the engine speed and the transmission output shaft speed;
[0225] The clutch protection trigger condition is determined based on the relationship between the engine net torque and the torque threshold, the relationship between the clutch pressure plate position and the position threshold, and the relationship between the speed difference and the difference threshold.
[0226] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the heat generated by clutch slippage of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle, including:
[0227] The difference between the engine speed and the transmission output shaft speed is used as the first value;
[0228] The heat generated by clutch slippage in the target vehicle is determined by multiplying the engine's net torque by the first value.
[0229] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining the current temperature of the clutch based on the heat generated by clutch slippage, clutch parameters, and the initial temperature of the clutch, including:
[0230] The first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch;
[0231] Determine the clutch heat dissipation based on the first temperature and the current ambient temperature;
[0232] The current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters.
[0233] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: the clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity.
[0234] Accordingly, the current clutch temperature is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters, including:
[0235] The difference between the heat generated by clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch.
[0236] Determine the current temperature of the clutch based on the effective heat of the clutch and the clutch parameters.
[0237] In one embodiment, when the computer program is executed by the processor, it further performs the following steps: determining a clutch protection strategy for the target vehicle based on the current clutch temperature, including:
[0238] Determine the clutch overheating state based on the effective heat of the clutch and the current temperature of the clutch;
[0239] Determine the clutch protection strategy for the target vehicle based on the clutch overheating status.
[0240] Those skilled in the art will understand that all or part of the processes in the above embodiments can be implemented by a computer program instructing related hardware. The computer program can be stored in a non-volatile computer-readable storage medium. When executed, the computer program can include the processes of the embodiments described above. Any references to memory, databases, or other media used in the embodiments provided in this application can include at least one of non-volatile and volatile memory. Non-volatile memory can include read-only memory (ROM), magnetic tape, floppy disk, flash memory, optical memory, high-density embedded non-volatile memory, resistive random access memory (ReRAM), magnetic random access memory (MRAM), ferroelectric random access memory (FRAM), phase change memory (PCM), graphene memory, etc. Volatile memory can include random access memory (RAM) or external cache memory, etc. By way of illustration and not limitation, RAM can take many forms, such as Static Random Access Memory (SRAM) or Dynamic Random Access Memory (DRAM). The databases involved in the embodiments provided in this application may include at least one type of relational database and non-relational database. Non-relational databases may include, but are not limited to, blockchain-based distributed databases. The processors involved in the embodiments provided in this application may be general-purpose processors, central processing units, graphics processing units, digital signal processors, programmable logic devices, quantum computing-based data processing logic devices, etc., and are not limited to these.
[0241] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.
[0242] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of this application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this application should be determined by the appended claims.
Claims
1. A method for protecting a vehicle clutch, characterized in that, The method includes: Based on the engine and transmission operating parameters of the target vehicle, the clutch slippage heat generation of the target vehicle is determined. The engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, actual engine torque, and engine loss torque. Correspondingly, determining the clutch slippage heat generation of the target vehicle based on these parameters includes: determining the engine rotational torque of the target vehicle based on the engine rotational mass and engine rotational acceleration; determining the net engine torque of the target vehicle based on the actual engine torque, the engine rotational torque, and the engine loss torque; the transmission operating parameters include the transmission output shaft speed; determining the speed difference between the engine speed and the transmission output shaft speed; determining the clutch protection triggering condition based on the relationship between the net engine torque and a torque threshold, the relationship between the clutch pressure plate position and a position threshold, and the relationship between the speed difference and a difference threshold; if the clutch protection triggering condition is trigger protection, the difference between the engine speed and the transmission output shaft speed is used as a first value; the clutch slippage heat generation of the target vehicle is determined based on the product of the net engine torque and the first value. A first temperature is determined based on the heat generated by clutch slippage and the initial temperature of the clutch; the heat dissipation of the clutch is determined based on the first temperature and the current ambient temperature; the current temperature of the clutch is determined based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters; the initial temperature of the clutch is the initial ambient temperature. Based on the current temperature of the clutch, determine the clutch protection strategy for the target vehicle.
2. The method according to claim 1, characterized in that, The clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity; Accordingly, determining the current temperature of the clutch based on the heat generated by clutch slippage, the heat dissipation of the clutch, and the clutch parameters includes: The difference between the heat generated by the clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch. The current temperature of the clutch is determined based on the effective heat of the clutch and the clutch parameters.
3. The method according to claim 2, characterized in that, The step of determining the clutch protection strategy for the target vehicle based on the current clutch temperature includes: The overheating state of the clutch is determined based on the effective heat of the clutch and the current temperature of the clutch; Based on the overheating state of the clutch, a clutch protection strategy for the target vehicle is determined.
4. A vehicle clutch protection device, characterized in that, The device includes: The first determining module is used to determine the clutch slippage heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters of the target vehicle. The engine operating parameters include engine speed, engine rotational acceleration, engine rotational mass, actual engine torque, and engine loss torque. Correspondingly, determining the clutch slippage heat generation of the target vehicle based on the engine operating parameters and transmission operating parameters includes: determining the engine rotational torque of the target vehicle based on the engine rotational mass and engine rotational acceleration; determining the net engine torque of the target vehicle based on the actual engine torque, the engine rotational torque, and the engine loss torque; the transmission operating parameters include the transmission output shaft speed; determining the speed difference between the engine speed and the transmission output shaft speed; determining the clutch protection triggering condition based on the relationship between the net engine torque and a torque threshold, the relationship between the clutch pressure plate position and a position threshold, and the relationship between the speed difference and a difference threshold; if the clutch protection triggering condition is trigger protection, using the difference between the engine speed and the transmission output shaft speed as a first value; and determining the clutch slippage heat generation of the target vehicle based on the product of the net engine torque and the first value. The second determining module is used to determine a first temperature based on the heat generated by the clutch slippage and the initial temperature of the clutch; determine the heat dissipation of the clutch based on the first temperature and the current ambient temperature; and determine the current temperature of the clutch based on the heat generated by the clutch slippage, the heat dissipation of the clutch, and the clutch parameters; wherein the initial temperature of the clutch is the initial ambient temperature. The third determining module is used to determine the clutch protection strategy of the target vehicle based on the current temperature of the clutch.
5. The apparatus according to claim 4, characterized in that, The clutch parameters include the clutch pressure plate mass and the clutch specific heat capacity; the second determining module is further specifically used for: The difference between the heat generated by the clutch slippage and the heat dissipation of the clutch is taken as the effective heat of the clutch. The current temperature of the clutch is determined based on the effective heat of the clutch and the clutch parameters.
6. The apparatus according to claim 5, characterized in that, The third determining module is further specifically used for: The overheating state of the clutch is determined based on the effective heat of the clutch and the current temperature of the clutch; Based on the overheating state of the clutch, a clutch protection strategy for the target vehicle is determined.
7. A computer device comprising a memory and a processor, wherein the memory stores a computer program, characterized in that, When the processor executes the computer program, it implements the steps of the vehicle clutch protection method according to any one of claims 1 to 3.
8. A computer-readable storage medium having a computer program stored thereon, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.
9. A computer program product, comprising a computer program, characterized in that, When the computer program is executed by a processor, it implements the steps of the method according to any one of claims 1 to 3.
Citation Information
Patent Citations
Method and system for protecting a starting clutch
CN101571168A