Vehicle gear switching control method, device and terminal equipment

Abstract

The present invention, applicable to the field of vehicle technology, discloses a vehicle gear shift control method, apparatus, and terminal device. The method comprises: obtaining a vehicle's driving mode and driving status information; determining whether the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode, or sports mode; determining a gear shift strategy based on the driving mode and driving status information; and performing gear shift control based on the gear shift strategy. The present invention can determine different gear shift strategies based on different driving modes, meeting user needs for multiple driving modes and satisfying user drivability requirements.

Description

Technical Field

[0001] The present invention belongs to the field of vehicle technology, and in particular relates to a vehicle gear switching control method, device and terminal equipment. Background Art

[0002] Nowadays, there are more and more vehicles equipped with automatic transmissions in the automobile market, and ordinary consumers have generally higher requirements for the drivability and economy of vehicles.

[0003] Currently, gear shift control strategies are usually designed for a single driving mode, but this approach cannot meet user needs for multiple driving modes. Summary of the Invention

[0004] In view of this, an embodiment of the present invention provides a vehicle gear switching control method, apparatus and terminal device to solve the problem that the prior art designs a gear switching control strategy for a single driving mode and cannot meet the user's needs for multiple driving modes.

[0005] A first aspect of an embodiment of the present invention provides a vehicle gear switching control method, comprising:

[0006] Obtain vehicle driving mode and driving status information; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode;

[0007] According to the driving mode and driving status information, the gear switching strategy is determined, and the gear switching control is performed according to the gear switching strategy.

[0008] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0009] If the driving mode is sand mode and the driving status information meets the first preset condition, the gear switching strategy is determined to be the upshift and downshift suppression strategy, and when an upshift signal or a downshift signal is received, the current gear is maintained unchanged within a preset time.

[0010] In one possible implementation, the driving state information includes gear position, throttle opening, vehicle speed, engine speed, wheel signal, and brake signal;

[0011] The driving status information satisfies the first preset condition, including:

[0012] The gear is within the preset low gear range of D gear, and the throttle opening is reduced from greater than the first preset opening to the second preset opening, and the vehicle speed is within the preset low speed range, and the engine speed is within the first preset speed range, and the wheel signal shows that there is speed slip, and the braking signal is that there is no braking signal.

[0013] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0014] If the driving mode is the standard mode and the driving status information meets the second preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset optimal fuel consumption speed range.

[0015] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0016] The driving status information satisfies the second preset condition, including:

[0017] The gear is in D gear, the throttle opening is not greater than the third preset opening, and the engine speed is not greater than the first preset speed.

[0018] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0019] If the driving mode is the economy mode and the driving status information meets the third preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset low fuel consumption speed range.

[0020] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0021] The driving status information satisfies a third preset condition, including:

[0022] The gear is in D gear, the throttle opening is not greater than a first preset opening, and the engine speed is not greater than a second preset speed.

[0023] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0024] If the driving mode is the mud mode and the driving state information satisfies a fourth preset condition, determining that the gear shift strategy is an early downshift strategy, and performing an early downshift according to the early downshift strategy;

[0025] If the driving mode is the mud mode and the driving state information satisfies the fifth preset condition, the gear switching strategy is determined to be the early upshift strategy, and an early upshift is performed according to the early upshift strategy.

[0026] In one possible implementation, the driving state information includes gear position, throttle opening, and wheel signals;

[0027] The driving status information satisfies a fourth preset condition, including:

[0028] The gear is within a first preset gear range of D gear, the throttle opening is not less than a fourth preset opening, and the wheel signal indicates that there is speed slip; wherein the first preset gear range does not include D1 gear;

[0029] The driving status information satisfies the fifth preset condition, including:

[0030] The gear is in D1, and the throttle opening is less than the fourth preset opening.

[0031] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0032] If the driving mode is the snow mode and the driving status information meets the sixth preset condition, the gear switching strategy is determined to be the D2 starting strategy, and when the gear is switched to D gear, the gear is controlled to start from D2.

[0033] In one possible implementation, the driving state information includes gear position, throttle opening, and vehicle speed;

[0034] The driving status information satisfies a sixth preset condition, including:

[0035] The gear is in P or N, the throttle opening is 0, and the vehicle speed is 0.

[0036] In one possible implementation, a gear shift strategy is determined based on the driving mode and driving state information, and gear shift control is performed based on the gear shift strategy, including:

[0037] If the driving mode is the sport mode and the driving status information meets the seventh preset condition, the gear switching strategy is determined to be the delayed upshift strategy, and delayed upshifting is performed according to the delayed upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset maximum torque speed range.

[0038] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0039] The driving status information satisfies the seventh preset condition, including:

[0040] The gear is within the second preset gear range of D gear, the throttle opening is not less than the fifth preset opening, and the engine speed is within the second preset speed range.

[0041] A second aspect of an embodiment of the present invention provides a vehicle gear switching control device, comprising:

[0042] An acquisition module is used to obtain the driving mode and driving status information of the vehicle; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode;

[0043] The gear shift control module is used to determine the gear shift strategy based on the driving mode and driving status information, and perform gear shift control according to the gear shift strategy.

[0044] A third aspect of an embodiment of the present invention provides a terminal device, comprising a memory, a processor, and a computer program stored in the memory and runnable on the processor. When the processor executes the computer program, the steps of the vehicle gear switching control method as described in the first aspect or any possible implementation of the first aspect are implemented.

[0045] The fourth aspect of an embodiment of the present invention provides a computer-readable storage medium, which stores a computer program. When the computer program is executed by one or more processors, it implements the steps of the vehicle gear switching control method as described in the first aspect or any possible implementation of the first aspect.

[0046] Compared with the prior art, the embodiments of the present invention have the following beneficial effects: the embodiments of the present invention obtain the driving mode and driving status information of the vehicle; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode, and the gear switching strategy is determined according to the driving mode and driving status information, and the gear switching control is performed according to the gear switching strategy. Different gear switching strategies can be determined according to different driving modes to meet the user's needs for multiple driving modes and meet the user's driving needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0048] Figure 1 1 is a schematic diagram of an implementation flow of a vehicle gear shift control method provided by an embodiment of the present invention;

[0049] Figure 2 This is a flow chart of the gear shift control in sand mode provided by one embodiment of the present invention;

[0050] Figure 3This is a flow chart of the gear switching control in a standard mode provided by one embodiment of the present invention;

[0051] Figure 4 This is a flow chart of gear switching control in an economy mode provided by one embodiment of the present invention;

[0052] Figure 5 This is a flow chart of the gear shift control in mud mode provided by one embodiment of the present invention;

[0053] Figure 6 This is a flow chart of the gear shift control in the snow mode provided by one embodiment of the present invention;

[0054] Figure 7 This is a flow chart of gear switching control in sports mode provided by one embodiment of the present invention;

[0055] Figure 8 is a schematic block diagram of a vehicle gear switching control device provided by an embodiment of the present invention;

[0056] Figure 9 This is a schematic block diagram of a terminal device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0057] In the following description, specific details such as specific system structures and techniques are provided for purposes of illustration rather than limitation to facilitate a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application may be implemented in other embodiments without these specific details. In other cases, detailed descriptions of well-known systems, devices, circuits, and methods are omitted to avoid obscuring the description of the present application with unnecessary detail.

[0058] In order to illustrate the technical solution of the present invention, specific embodiments are provided below.

[0059] Figure 1 This is a schematic diagram of the implementation flow of a vehicle gear shift control method provided by an embodiment of the present invention. For ease of explanation, only the portion related to the embodiment of the present invention is shown. The execution subject of the embodiment of the present invention may be a terminal device.

[0060] like Figure 1 As shown, the above vehicle gear switching control method may include the following steps:

[0061] S101: Acquire driving mode and driving status information of the vehicle; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode.

[0062] In an embodiment of the present invention, the driving mode is one of a sand mode, a standard mode, an economy mode, a mud mode, a snow mode, and a sports mode.

[0063] The driving status information may include at least one of gear position, throttle opening, vehicle speed, engine speed, wheel signal and brake signal.

[0064] S102: Determine a gear shift strategy based on the driving mode and driving state information, and perform gear shift control according to the gear shift strategy.

[0065] In the embodiment of the present invention, a gear switching strategy may be determined according to the driving mode and the driving state information, so that the gear switching control may be performed according to the gear switching strategy during the gear switching.

[0066] As can be seen from the above description, the embodiment of the present invention obtains the vehicle's driving mode and driving status information; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode, and determines the gear switching strategy according to the driving mode and driving status information, and performs gear switching control according to the gear switching strategy. Different gear switching strategies can be determined according to different driving modes to meet the user's needs for multiple driving modes and meet the user's driving needs.

[0067] In some embodiments of the present invention, the above S102 may include the following steps:

[0068] If the driving mode is sand mode and the driving status information meets the first preset condition, the gear switching strategy is determined to be the upshift and downshift suppression strategy, and when an upshift signal or a downshift signal is received, the current gear is maintained unchanged within a preset time.

[0069] In the embodiment of the present invention, the first preset condition can be set according to actual needs and is not specifically limited here.

[0070] When the driving mode is sand mode and the driving status information meets the first preset condition, the upshift and downshift suppression strategy is adopted. That is, when the user upshifts or downshifts, the current gear position is kept unchanged within the preset time. After the preset time, the upshift or downshift is performed to facilitate the vehicle to obtain the best driving force when the driver steps on the accelerator again.

[0071] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, vehicle speed, engine speed, wheel signal and brake signal;

[0072] The above driving status information meets the first preset condition, including:

[0073] The gear is within the preset low gear range of D gear, and the throttle opening is reduced from greater than the first preset opening to the second preset opening, and the vehicle speed is within the preset low speed range, and the engine speed is within the first preset speed range, and the wheel signal shows that there is speed slip, and the braking signal is that there is no braking signal.

[0074] Among them, the wheel signal is the presence of speed slip or the absence of speed slip; the brake signal is the presence of a brake signal or the absence of a brake signal. The preset low gear range, the first preset opening, the second preset opening, the preset low vehicle speed range, the first preset speed range, and the preset duration can all be set according to actual needs and are not specifically limited here. For example, the preset low gear range can be between D1 and D4 gears (including D1 and D4), the first preset opening is 20%, the second preset opening is 0 or a percentage close to 0, the low vehicle speed range is 40 to 50 km / h, the first preset speed range is 1500 to 3500 r / min, and the preset duration is 1 to 5 seconds. Among them, the throttle opening is 100% when the throttle is fully depressed, and is 0 when the throttle is not depressed, that is, when the throttle is released.

[0075] For example, when it is detected that the driving mode is switched to sand mode, and the gear is between D1-D4, and the throttle opening suddenly drops from greater than 20% to 0, and the vehicle speed is approximately 40-50 km / h, and the engine speed is approximately 1500 to 3500 rpm, and there is speed slip in the wheel signal, and there is no braking force signal, then the judgment condition is met, and the upshift strategy is suppressed (upshift is prohibited for a suppression time of 1-5 seconds) to facilitate the vehicle to obtain the best driving force when the driver steps on the accelerator again.

[0076] With the increasing adoption of automatic transmissions, users are increasingly demanding greater maneuverability. Urban SUVs are also required to provide shallow off-road capabilities. To meet this demand for driving pleasure, a sand mode control strategy has been developed based on sandy road conditions. This strategy is primarily used when driving over sand dunes, where the driver cannot see the road conditions beyond the dune. This strategy allows the driver to fully release or reduce the throttle to facilitate speed control. Once the driver has a clear view of the road and presses the accelerator again, the transmission maintains the original gear, reducing shift delays and ensuring sufficient driving force, effectively improving maneuverability.

[0077] In a specific application scenario, the gear shift control process of the sand mode is as follows: Figure 2 As shown, the process is as follows:

[0078] Determine whether the current driving mode is sand mode. If not, enter the gear shift control process for the corresponding driving mode. If it is sand mode, determine whether the current gear is within the preset low gear range of D gear.

[0079] If the current gear is not within the preset low gear range of D gear, the gear shifting is performed according to the normal gear shifting line; if the current gear is within the preset low gear range of D gear, it is determined whether the throttle opening is reduced from the first preset opening to the second preset opening.

[0080] If the throttle opening is not reduced from the first preset opening to the second preset opening, the upshift and downshift are realized according to the normal shift line; if the throttle opening is reduced from the first preset opening to the second preset opening, it is determined whether the current vehicle speed is within the preset low speed range.

[0081] If the current vehicle speed is not within the preset low speed range, upshifting and downshifting are performed according to the normal shift line; if the current vehicle speed is within the preset low speed range, it is determined whether the current engine speed is within the first preset speed range.

[0082] If the current engine speed is not within the first preset speed range, upshifting and downshifting are performed according to the normal shift line; if the current engine speed is within the first preset speed range, it is determined whether the current wheel signal indicates that there is speed slip.

[0083] If the current wheel signal does not indicate speed slip, upshifting and downshifting are performed according to the normal shift line; if the current wheel signal indicates speed slip, it is determined whether the current brake signal is no brake signal.

[0084] If the current braking signal is not a no-braking signal, upshifting and downshifting are performed according to a normal shift line; if the current braking signal is a no-braking signal, the gear switching strategy is determined to be a strategy for inhibiting upshifting and downshifting.

[0085] It should be noted that Figure 2 This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0086] In some embodiments of the present invention, the above S102 may include the following steps:

[0087] If the driving mode is the standard mode and the driving status information meets the second preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset optimal fuel consumption speed range.

[0088] In the embodiment of the present invention, the second preset condition can be set according to actual needs and is not specifically limited here.

[0089] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, and engine speed;

[0090] The driving status information satisfies the second preset condition, including:

[0091] The gear is in D gear, the throttle opening is not greater than the third preset opening, and the engine speed is not greater than the first preset speed.

[0092] Among them, the gear position is in D gear, which means the gear position is between D1 and D8.

[0093] The third preset opening, the first preset speed, and the preset optimal fuel consumption speed range can be set according to actual needs and are not specifically limited here. For example, the third preset opening can be 25%, the first preset speed can be 2000 rpm, and the preset optimal fuel consumption speed range can be approximately 1600 rpm.

[0094] When the driving mode is the standard mode, the gear is in D gear, the throttle opening is not greater than the third preset opening, and the engine speed is not greater than the first preset speed, an early shift-up strategy is adopted. After shifting up, the engine is within the preset optimal fuel consumption speed range, which can put the engine in the optimal fuel consumption area and keep the power and economy in a better speed area.

[0095] For example, when it is detected that the driving mode is switched to the standard mode, the gear is between D1 and D8, the throttle opening is less than or equal to 25%, and the engine speed is less than or equal to 2000 rpm, the upshift is realized in advance, and the engine speed is around 1600 rpm after the upshift.

[0096] As more and more cars are equipped with automatic transmissions, users are paying more and more attention to the fuel economy and driving dynamics of the vehicles. In order to meet users' requirements for fuel consumption and power, standard mode control strategies are designed and developed, mainly for drivers who want to achieve fuel economy and power requirements.

[0097] In a specific application scenario, the standard mode gear switching control process is as follows: Figure 3 As shown, the process is as follows:

[0098] Determine whether the current driving mode is the standard mode. If not, enter the gear switching control process of the corresponding driving mode; if it is the standard mode, determine whether the current gear is in D gear.

[0099] If the current gear is not in D gear, the gear is shifted up or down according to the normal gear shift line; if the current gear is in D gear, it is determined whether the current throttle opening is not greater than the third preset opening.

[0100] If the current throttle opening is greater than the third preset opening, upshifting and downshifting are performed according to the normal shift line; if the current throttle opening is not greater than the third preset opening, it is determined whether the current engine speed is not greater than the first preset speed.

[0101] If the current engine speed is greater than the first preset speed, upshifting and downshifting are performed according to the normal shift line; if the current engine speed is not greater than the first preset speed, the gear switching strategy is determined to be an early upshift strategy.

[0102] It should be noted that Figure 3This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0103] In some embodiments of the present invention, the above S102 may include the following steps:

[0104] If the driving mode is the economy mode and the driving status information meets the third preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset low fuel consumption speed range.

[0105] In the embodiment of the present invention, the third preset condition can be set according to actual needs and is not specifically limited here.

[0106] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, and engine speed;

[0107] The driving status information satisfies a third preset condition, including:

[0108] The gear is in D gear, the throttle opening is not greater than a first preset opening, and the engine speed is not greater than a second preset speed.

[0109] The second preset speed and the preset low fuel consumption speed range can be set according to actual needs and are not specifically limited here. For example, the second preset speed is 1700 r / min and the preset low fuel consumption speed range is about 1400 r / min.

[0110] When the driving mode is economic mode, the gear is in D gear, the throttle opening is not greater than the first preset opening, and the engine speed is not greater than the second preset speed, an early upshift strategy is adopted to achieve upshifting in advance to put the vehicle in a higher gear, and after upshifting, the engine speed is controlled to be within the preset low fuel consumption speed range to ensure that the engine is in a lower fuel consumption area and achieve the purpose of fuel saving.

[0111] For example, when it is detected that the driving mode is switched to economy mode, and the gear is between D1-D8, the throttle opening value is ≤20%, and the engine speed is ≤1700 rpm, the gear is shifted up in advance so that the vehicle is in a higher gear and the engine is in a low speed range (around 1400 rpm), ensuring that the engine is in a lower fuel consumption area, thereby achieving the purpose of saving fuel.

[0112] As more and more vehicles are equipped with automatic transmissions, users are paying more and more attention to the fuel economy of their vehicles. In order to achieve consumers' driving pleasure and economic needs, an economic mode control strategy is designed and developed, mainly for drivers who want to achieve fuel economy needs.

[0113] In a specific application scenario, the gear shift control process of the economic mode is as follows: Figure 4 As shown, the process is as follows:

[0114] Determine whether the current driving mode is the economic mode. If not, enter the gear switching control process of the corresponding driving mode; if it is the economic mode, determine whether the current gear is in D gear.

[0115] If the current gear is not in D gear, the gear is shifted up or down according to the normal gear shift line; if the current gear is in D gear, it is determined whether the current throttle opening is not greater than the first preset opening.

[0116] If the current throttle opening is greater than the first preset opening, upshifting and downshifting are performed according to the normal shift line; if the current throttle opening is not greater than the first preset opening, it is determined whether the current engine speed is not greater than the second preset speed.

[0117] If the current engine speed is greater than the second preset speed, upshifting and downshifting are performed according to the normal shift line; if the current engine speed is not greater than the second preset speed, the gear switching strategy is determined to be an early upshift strategy.

[0118] It should be noted that Figure 4 This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0119] In some embodiments of the present invention, the above S102 may include the following steps:

[0120] If the driving mode is the mud mode and the driving state information satisfies a fourth preset condition, determining that the gear shift strategy is an early downshift strategy, and performing an early downshift according to the early downshift strategy;

[0121] If the driving mode is the mud mode and the driving state information satisfies the fifth preset condition, the gear switching strategy is determined to be the early upshift strategy, and an early upshift is performed according to the early upshift strategy.

[0122] In the embodiment of the present invention, the fourth preset condition and the fifth preset condition can be set according to actual needs and are not specifically limited here.

[0123] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, and wheel signal;

[0124] The driving status information satisfies a fourth preset condition, including:

[0125] The gear is within a first preset gear range of D gear, the throttle opening is not less than a fourth preset opening, and the wheel signal indicates that there is speed slip; wherein the first preset gear range does not include D1 gear;

[0126] The driving status information satisfies the fifth preset condition, including:

[0127] The gear is in D1, and the throttle opening is less than the fourth preset opening.

[0128] The first preset gear range and the fourth preset opening can be set according to actual needs and are not specifically limited here. For example, the first preset gear range is between D2 and D5, and the fourth preset opening can be 50%.

[0129] When the driving mode is mud mode, the gear is within the first preset gear range of D gear, the throttle opening is not less than the fourth preset opening, and the wheel signal indicates that there is speed slip, an early downshift strategy is adopted to give the vehicle greater driving force, maintain a certain acceleration capability, and improve the vehicle's passing performance.

[0130] When the driving mode is mud mode, the gear is in D1, and the throttle opening is less than the fourth preset opening, an early upshift strategy is adopted to reduce the problem of idling and slipping due to driving force being greater than adhesion, and improve the passing performance.

[0131] For example, when it is detected that the driving mode is switched to mud mode, and the gear position is between D2 and D5, and the throttle opening is between 50% and 100%, and the wheel signal indicates that there is speed slip, an early downshift is implemented; when it is detected that the driving mode is switched to mud mode, and the gear position is in D1, and the throttle opening is less than 50%, an early upshift strategy is adopted.

[0132] With the increasing adoption of automatic transmissions, users are demanding higher levels of maneuverability. Urban SUVs are also required to provide shallow off-road capabilities. To meet consumer demand for driving pleasure, a mud mode control strategy has been developed based on muddy road conditions. This strategy is primarily designed for situations where the driver cannot determine whether the muddy surface is a deep or shallow pit. This strategy involves maintaining engine speed by applying high throttle. As vehicle resistance increases and speed decreases, downshifting early can increase driving force and effectively improve maneuverability. When the vehicle is stopped in mud, applying low throttle should result in an early shift to reduce idling and slipping due to driving force exceeding adhesion, thereby improving maneuverability.

[0133] In a specific application scenario, the gear shift control process of mud mode is as follows: Figure 5 As shown, the process is as follows:

[0134] Determine whether the current driving mode is mud mode. If not, enter the gear switching control process of the corresponding driving mode; if it is mud mode, determine whether the current gear is within the first preset gear range of D gear.

[0135] If the current gear position is not within the first preset gear range of D gear, it is determined whether the current gear position is D1 gear. If the current gear position is not D1 gear, upshifting and downshifting are performed according to the normal gear shift line. If the current gear position is D1 gear, it is determined whether the current throttle opening is less than a fourth preset opening. If the current throttle opening is less than the fourth preset opening, the gear switching strategy is determined to be an early upshift strategy. If the current throttle opening is not less than the fourth preset opening, upshifting and downshifting are performed according to the normal gear shift line.

[0136] If the current gear is within the first preset gear range of D gear, a determination is made as to whether the current throttle opening is not less than a fourth preset opening. If the current throttle opening is less than the fourth preset opening, upshifting and downshifting are performed according to the normal shift curve. If the current throttle opening is not less than the fourth preset opening, a determination is made as to whether the wheel signal indicates speed slippage. If the wheel signal indicates speed slippage, the gear shift strategy is determined to be an early downshift strategy. If the wheel signal does not indicate speed slippage, upshifting and downshifting are performed according to the normal shift curve.

[0137] It should be noted that Figure 5 This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0138] In some embodiments of the present invention, the above S102 may include the following steps:

[0139] If the driving mode is the snow mode and the driving status information meets the sixth preset condition, the gear switching strategy is determined to be the D2 starting strategy, and when the gear is switched to D gear, the gear is controlled to start from D2.

[0140] In the embodiment of the present invention, the sixth preset condition can be set according to actual needs and is not specifically limited here.

[0141] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, and vehicle speed;

[0142] The driving status information satisfies a sixth preset condition, including:

[0143] The gear is in P or N, the throttle opening is 0, and the vehicle speed is 0.

[0144] In an embodiment of the present invention, when the driving mode is snow mode, the gear is in P or N, the throttle opening is 0, and the vehicle speed is 0, a D2 start strategy is adopted. That is, when switching from P or N to D, the TCU control unit can directly switch to D2 to start, which can reduce the risk of skidding. At the same time, it detects no slope and controls the engine torque output when starting on a flat road, reducing the risk of vehicle skidding due to the driver stepping on the throttle (40%-70%) and improving the driving ability. If the above conditions are not met, when switching from P or N to D, the shifter is operated to switch from P or N to D1.

[0145] For example, when the gear detects that the driving mode is switched to snow mode, the throttle opening is 0, and the vehicle speed value is 0, the shifter is operated to switch from P or N gear to D gear, and the TCU control unit executes D2 start to reduce the risk of slipping. At the same time, it detects that there is no slope, and controls the engine torque output when starting on a flat road, reducing the risk of vehicle slipping due to the driver stepping on a large accelerator (40-70%), thereby improving the passability.

[0146] As more and more vehicles are equipped with automatic transmissions, drivers are experiencing difficulties with driving on snowy or icy roads. When stuck in the snow, drivers often try to extricate themselves by pressing the accelerator. However, the driving force is actually greater than the adhesion, causing the wheels to slip and preventing the vehicle from being pulled out. To address this issue, the Snow Mode control strategy was developed. The Snow Mode control strategy is designed to make it easier for drivers to extricate themselves on snowy or icy roads, improving their driving ability.

[0147] In a specific application scenario, the gear shift control process of the snow mode is as follows: Figure 6 As shown, the process is as follows:

[0148] Determine whether the current driving mode is snow mode. If not, enter the gear shift control process of the corresponding driving mode; if it is snow mode, determine whether the current gear is in P gear or N gear.

[0149] If the current gear is not in P or N, the gear is shifted up or down according to the normal gear shift line; if the current gear is in P or N, it is determined whether the current throttle opening is 0.

[0150] If the current throttle opening is not 0, the gear shift is realized according to the normal gear shift line; if the current throttle opening is 0, it is determined whether the current vehicle speed is 0.

[0151] If the current vehicle speed is not 0, the gear shifting is performed according to the normal gear shift line; if the current vehicle speed is 0, the gear shifting strategy is determined to be the D2 starting strategy.

[0152] Among them, to determine whether the throttle opening is 0, it is possible to determine whether the throttle opening is 0 or close to 0. If it is close to 0, it can be considered to be 0. The same is true for the vehicle speed. If the vehicle speed is close to 0, it can be determined that the vehicle speed is 0.

[0153] It should be noted that Figure 6 This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0154] In some embodiments of the present invention, the above S102 may include the following steps:

[0155] If the driving mode is the sport mode and the driving status information meets the seventh preset condition, the gear switching strategy is determined to be the delayed upshift strategy, and delayed upshifting is performed according to the delayed upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset maximum torque speed range.

[0156] In the embodiment of the present invention, the seventh preset condition can be set according to actual needs and is not specifically limited here.

[0157] In some embodiments of the present invention, the driving state information includes gear position, throttle opening, and engine speed;

[0158] The driving status information satisfies the seventh preset condition, including:

[0159] The gear is within the second preset gear range of D gear, the throttle opening is not less than the fifth preset opening, and the engine speed is within the second preset speed range.

[0160] The second preset gear range, the fifth preset opening, the second preset speed range, and the preset maximum torque speed range can be set according to actual needs and are not specifically limited here. For example, the second preset gear range can be between D1 and D6, the fifth preset opening can be 40%, the second preset speed range can be a preset high speed range, such as 4000 to 5600 rpm, and the preset maximum torque speed range can be approximately 3000 rpm.

[0161] When the driving mode is sport mode, the gear is within the second preset gear range of D gear, the throttle opening is not less than the fifth preset opening, and the engine speed is within the second preset speed range, a delayed upshift strategy is adopted, that is, when an upshift signal is received, the gear is upshifted after a delay of a preset time. After upshifting, the engine speed is within the preset maximum torque speed range, so that the engine is in the maximum torque range, and the vehicle has better acceleration capability.

[0162] As more and more vehicles are equipped with automatic transmissions, users are placing increasing emphasis on vehicle driving dynamics. To meet this consumer demand for dynamics, a sports mode control strategy has been designed and developed. This strategy is primarily used to provide a richer driving experience for the driver.

[0163] For example, when it is detected that the driving mode is switched to sport mode, and the gear is between D1-D6 and the throttle opening is between 40%-100%, and the engine speed is between 4000-5600 rpm, delayed upshifting is achieved. After upshifting, the engine speed is around 3000 rpm, so that the engine is in the maximum torque range, so that the vehicle has better acceleration capability.

[0164] In a specific application scenario, the gear shift control process of the sports mode is as follows: Figure 7 As shown, the process is as follows:

[0165] Determine whether the current driving mode is sports mode. If not, enter the gear switching control process of the corresponding driving mode; if it is sports mode, determine whether the current gear is within the second preset gear range of D gear.

[0166] If the current gear is not within the second preset gear range of D gear, the gear shifting is performed according to the normal gear shifting line; if the current gear is within the second preset gear range of D gear, it is determined whether the current throttle opening is not less than the fifth preset opening.

[0167] If the current throttle opening is less than the fifth preset opening, upshifting and downshifting are performed according to the normal shift line; if the current throttle opening is not less than the fifth preset opening, it is determined whether the current engine speed is within the second preset speed range.

[0168] If the current engine speed is not within the second preset speed range, upshifting and downshifting are performed according to the normal shift line; if the current engine speed is within the second preset speed range, the gear switching strategy is determined to be a delayed upshift strategy.

[0169] It should be noted that Figure 7 This is just one feasible method. The order of the above judgment conditions can be interchanged and is not specifically limited.

[0170] In a possible implementation, if none of the above six conditions are met, upshifting and downshifting are normally performed according to the shift line.

[0171] It should be understood that the size of the serial numbers of the steps in the above embodiments does not mean the order of execution. The execution order of each process should be determined by its function and internal logic, and should not constitute any limitation on the implementation process of the embodiments of the present invention.

[0172] Corresponding to the above-mentioned vehicle gear switching control method, an embodiment of the present invention further provides a vehicle gear switching control device, which has the same beneficial effects as the above-mentioned vehicle gear switching control method. Figure 8 3 is a schematic block diagram of a vehicle gear switching control device provided by an embodiment of the present invention. For ease of explanation, only the parts related to the embodiment of the present invention are shown.

[0173] In the embodiment of the present invention, the vehicle gear switching control device 30 may include an acquisition module 301 and a gear switching control module 302 .

[0174] The acquisition module 301 is used to acquire the driving mode and driving status information of the vehicle; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode;

[0175] The gear switching control module 302 is used to determine a gear switching strategy according to the driving mode and driving state information, and perform gear switching control according to the gear switching strategy.

[0176] In one possible implementation, the gear switching control module 302 may also be used to:

[0177] If the driving mode is sand mode and the driving status information meets the first preset condition, the gear switching strategy is determined to be the upshift and downshift suppression strategy, and when an upshift signal or a downshift signal is received, the current gear is maintained unchanged within a preset time.

[0178] In one possible implementation, the driving state information includes gear position, throttle opening, vehicle speed, engine speed, wheel signal, and brake signal;

[0179] The driving status information satisfies the first preset condition, including:

[0180] The gear is within the preset low gear range of D gear, and the throttle opening is reduced from greater than the first preset opening to the second preset opening, and the vehicle speed is within the preset low speed range, and the engine speed is within the first preset speed range, and the wheel signal shows that there is speed slip, and the braking signal is that there is no braking signal.

[0181] In one possible implementation, the gear switching control module 302 may also be used to:

[0182] If the driving mode is the standard mode and the driving status information meets the second preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset optimal fuel consumption speed range.

[0183] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0184] The driving status information satisfies the second preset condition, including:

[0185] The gear is in D gear, the throttle opening is not greater than the third preset opening, and the engine speed is not greater than the first preset speed.

[0186] In one possible implementation, the gear switching control module 302 may also be used to:

[0187] If the driving mode is the economy mode and the driving status information meets the third preset condition, the gear switching strategy is determined to be the early upshift strategy, and early upshifting is performed according to the early upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset low fuel consumption speed range.

[0188] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0189] The driving status information satisfies a third preset condition, including:

[0190] The gear is in D gear, the throttle opening is not greater than a first preset opening, and the engine speed is not greater than a second preset speed.

[0191] In one possible implementation, the gear switching control module 302 may also be used to:

[0192] If the driving mode is the mud mode and the driving state information satisfies a fourth preset condition, determining that the gear shift strategy is an early downshift strategy, and performing an early downshift according to the early downshift strategy;

[0193] If the driving mode is the mud mode and the driving state information satisfies the fifth preset condition, the gear switching strategy is determined to be the early upshift strategy, and an early upshift is performed according to the early upshift strategy.

[0194] In one possible implementation, the driving state information includes gear position, throttle opening, and wheel signals;

[0195] The driving status information satisfies a fourth preset condition, including:

[0196] The gear is within a first preset gear range of D gear, the throttle opening is not less than a fourth preset opening, and the wheel signal indicates that there is speed slip; wherein the first preset gear range does not include D1 gear;

[0197] The driving status information satisfies the fifth preset condition, including:

[0198] The gear is in D1, and the throttle opening is less than the fourth preset opening.

[0199] In one possible implementation, the gear switching control module 302 may also be used to:

[0200] If the driving mode is the snow mode and the driving status information meets the sixth preset condition, the gear switching strategy is determined to be the D2 starting strategy, and when the gear is switched to D gear, the gear is controlled to start from D2.

[0201] In one possible implementation, the driving state information includes gear position, throttle opening, and vehicle speed;

[0202] The driving status information satisfies a sixth preset condition, including:

[0203] The gear is in P or N, the throttle opening is 0, and the vehicle speed is 0.

[0204] In one possible implementation, the gear switching control module 302 may also be used to:

[0205] If the driving mode is the sport mode and the driving status information meets the seventh preset condition, the gear switching strategy is determined to be the delayed upshift strategy, and delayed upshifting is performed according to the delayed upshifting strategy, and after upshifting, the engine speed is controlled to be within the preset maximum torque speed range.

[0206] In one possible implementation, the driving state information includes gear position, throttle opening, and engine speed;

[0207] The driving status information satisfies the seventh preset condition, including:

[0208] The gear is within the second preset gear range of D gear, the throttle opening is not less than the fifth preset opening, and the engine speed is within the second preset speed range.

[0209] Those skilled in the art can clearly understand that for the convenience and simplicity of description, only the division of the above-mentioned functional units and modules is used as an example for illustration. In actual applications, the above-mentioned functions can be distributed and completed by different functional units and modules as needed, that is, the internal structure of the vehicle gear switching control device can be divided into different functional units or modules to complete all or part of the functions described above. The functional units and modules in the embodiment can be integrated into one processing unit, or each unit can exist physically alone, or two or more units can be integrated into one unit. The above-mentioned integrated unit can be implemented in the form of hardware or in the form of software functional units. In addition, the specific names of the functional units and modules are only for the convenience of distinguishing each other, and are not used to limit the scope of protection of this application. The specific working process of the units and modules in the above-mentioned device can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0210] Figure 9FIG. 1 is a schematic block diagram of a terminal device provided by an embodiment of the present invention. Figure 9 As shown, the terminal device 40 of this embodiment includes: one or more processors 401, a memory 402, and a computer program 403 stored in the memory 402 and executable on the processor 401. When the processor 401 executes the computer program 403, the steps in the above-mentioned embodiments of the vehicle gear shift control method are implemented, such as Figure 1 Alternatively, when the processor 401 executes the computer program 403, the functions of each module / unit in the embodiment of the vehicle gear shift control device are realized, for example Figure 8 Functions of modules 301 to 302 are shown.

[0211] Exemplarily, the computer program 403 may be divided into one or more modules / units, which are stored in the memory 402 and executed by the processor 401 to complete the present application. The one or more modules / units may be a series of computer program instruction segments capable of performing specific functions, which are used to describe the execution process of the computer program 403 in the terminal device 40. For example, the computer program 403 may be divided into an acquisition module and a gear shift control module, with the specific functions of each module being as follows:

[0212] An acquisition module is used to obtain the driving mode and driving status information of the vehicle; the driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sports mode;

[0213] The gear shift control module is used to determine the gear shift strategy based on the driving mode and driving status information, and perform gear shift control according to the gear shift strategy.

[0214] Other modules or units can refer to Figure 8 The description of the illustrated embodiment will not be repeated here.

[0215] The terminal device 40 may be a transmission control terminal. The terminal device 40 includes but is not limited to a processor 401 and a memory 402. Those skilled in the art will appreciate that Figure 9 It is only an example of the terminal device 40 and does not constitute a limitation of the terminal device 40. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the terminal device 40 may also include an input device, an output device, a network access device, a bus, etc.

[0216] The processor 401 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor.

[0217] The memory 402 may be an internal storage unit of the terminal device 40, such as a hard disk or memory of the terminal device 40. The memory 402 may also be an external storage device of the terminal device 40, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the terminal device 40. Furthermore, the memory 402 may include both an internal storage unit of the terminal device 40 and an external storage device. The memory 402 is used to store the computer program 403 and other programs and data required by the terminal device 40. The memory 402 may also be used to temporarily store data that has been output or is about to be output.

[0218] In the above embodiments, the description of each embodiment has its own focus. For parts that are not described or recorded in detail in a certain embodiment, reference can be made to the relevant description of other embodiments.

[0219] Those skilled in the art will appreciate that the units and algorithm steps of each example described in conjunction with the embodiments disclosed herein can be implemented in electronic hardware, or a combination of computer software and electronic hardware. Whether these functions are performed in hardware or software depends on the specific application and design constraints of the technical solution. Professional and technical personnel can use different methods to implement the described functions for each specific application, but such implementation should not be considered beyond the scope of this application.

[0220] In the embodiments provided in the present application, it should be understood that the disclosed vehicle gear switching control device and method can be implemented in other ways. For example, the above-described vehicle gear switching control device embodiment is merely illustrative. For example, the division of the modules or units is merely a logical function division. In actual implementation, there may be other division methods, such as multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0221] The units described as separate components may or may not be physically separate, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed across multiple network units. Some or all of these units may be selected to achieve the purpose of this embodiment according to actual needs.

[0222] In addition, the functional units in the various embodiments of the present application may be integrated into a single processing unit, or each unit may exist physically separately, or two or more units may be integrated into a single unit. The aforementioned integrated units may be implemented in the form of hardware or software functional units.

[0223] If the integrated module / unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the present application implements all or part of the process in the above-mentioned embodiment method, and can also be completed by instructing the relevant hardware through a computer program. The computer program can be stored in a computer-readable storage medium, and when the computer program is executed by the processor, it can implement the steps of the above-mentioned various method embodiments. Among them, the computer program includes computer program code, and the computer program code can be in source code form, object code form, executable file or some intermediate form. The computer-readable medium may include: any entity or device capable of carrying the computer program code, recording medium, USB flash drive, mobile hard disk, magnetic disk, optical disk, computer memory, read-only memory (ROM), random access memory (RAM), electric carrier signal, telecommunication signal and software distribution medium. It should be noted that the content contained in the computer-readable medium can be appropriately increased or decreased according to the requirements of legislation and patent practice in the jurisdiction. For example, in some jurisdictions, according to legislation and patent practice, computer-readable media do not include electric carrier signals and telecommunication signals.

[0224] The above-described embodiments are only used to illustrate the technical solutions of the present application, rather than to limit them. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. These modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the present application, and should all be included in the scope of protection of the present application.

Claims

1. A vehicle gear shift control method, characterized in that: include: Obtain vehicle driving mode and driving status information; The driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sport mode; determining a gear shift strategy according to the driving mode and the driving state information, and performing gear shift control according to the gear shift strategy; The determining of a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy, includes: If the driving mode is the standard mode and the driving state information satisfies a second preset condition, determining that the gear shift strategy is an early upshift strategy, performing an early upshift according to the early upshift strategy, and controlling the engine speed to be within a preset optimal fuel consumption speed range after the upshift; the early upshift strategy performs an early upshift relative to a normal shift line; The driving status information includes gear position, throttle opening and engine speed; The driving state information satisfies a second preset condition, including: The gear is in D gear, the throttle opening is not greater than a third preset opening, and the engine speed is not greater than a first preset speed.

2. The vehicle gear shift control method according to claim 1, characterized in that: The method further comprises determining a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy. If the driving mode is the sand mode and the driving state information satisfies a first preset condition, determining that the gear shift strategy is an upshift and downshift suppression strategy, and maintaining the current gear for a preset time period upon receiving an upshift signal or a downshift signal; The driving state information also includes vehicle speed, wheel signal and brake signal; The driving state information satisfies a first preset condition, including: The gear is within the preset low gear range of D gear, and the throttle opening is reduced from greater than the first preset opening to the second preset opening, and the vehicle speed is within the preset low vehicle speed range, and the engine speed is within the first preset speed range, and the wheel signal shows that there is a speed slip, and the brake signal is no brake signal.

3. The vehicle gear shift control method according to claim 1, characterized in that: The method further comprises determining a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy. If the driving mode is the economy mode and the driving state information satisfies a third preset condition, determining that the gear shift strategy is an early upshift strategy, performing an early upshift according to the early upshift strategy, and controlling the engine speed to be within a preset low fuel consumption speed range after the upshift; The driving state information satisfies a third preset condition, including: The gear is in D gear, the throttle opening is not greater than a first preset opening, and the engine speed is not greater than a second preset speed.

4. The vehicle gear shift control method according to claim 1, characterized in that: The method further comprises determining a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy. If the driving mode is the mud mode and the driving state information satisfies a fourth preset condition, determining that the gear shift strategy is an early downshift strategy, and performing an early downshift according to the early downshift strategy; the early downshift strategy performs an early downshift relative to a normal shift line; If the driving mode is the mud mode and the driving state information satisfies a fifth preset condition, determining that the gear shift strategy is an early upshift strategy, and performing an early upshift according to the early upshift strategy; The driving state information also includes wheel signals; The driving state information satisfies a fourth preset condition, including: The gear is within a first preset gear range of the D gear, the throttle opening is not less than a fourth preset opening, and the wheel signal indicates that there is speed slip; wherein the first preset gear range does not include the D1 gear; The driving state information satisfies a fifth preset condition, including: The gear position is in D1 gear, and the throttle opening is smaller than the fourth preset opening.

5. The vehicle gear shift control method according to claim 1, characterized in that: The method further comprises determining a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy. If the driving mode is the snow mode and the driving state information satisfies a sixth preset condition, determining that the gear shift strategy is the D2 start strategy, and when the gear is switched to the D gear, controlling the gear to start from the D2 gear; The driving state information also includes vehicle speed; The driving state information satisfies a sixth preset condition, including: The gear is in P gear or N gear, the throttle opening is 0, and the vehicle speed is 0.

6. The vehicle gear shift control method according to claim 1, characterized in that: The method further comprises determining a gear switching strategy based on the driving mode and the driving state information, and performing gear switching control according to the gear switching strategy. If the driving mode is the sport mode and the driving state information satisfies a seventh preset condition, determining that the gear shift strategy is a delayed upshift strategy, performing a delayed upshift according to the delayed upshift strategy, and controlling the engine speed to be within a preset maximum torque speed range after the upshift; the delayed upshift strategy delays upshifting relative to a normal shift line; The driving state information satisfies a seventh preset condition, including: The gear is within a second preset gear range of the D gear, the throttle opening is not less than a fifth preset opening, and the engine speed is within a second preset speed range.

7. A vehicle gear shift control device, characterized in that: include: An acquisition module, used to obtain the vehicle's driving mode and driving status information; The driving mode is sand mode, standard mode, economy mode, mud mode, snow mode or sport mode; a gear switching control module, configured to determine a gear switching strategy based on the driving mode and the driving state information, and perform gear switching control according to the gear switching strategy; The gear switching control module is specifically used to: If the driving mode is the standard mode and the driving state information satisfies a second preset condition, determining that the gear shift strategy is an early upshift strategy, performing an early upshift according to the early upshift strategy, and controlling the engine speed to be within a preset optimal fuel consumption speed range after the upshift; the early upshift strategy performs an early upshift relative to a normal shift line; The driving status information includes gear position, throttle opening and engine speed; The driving state information satisfies a second preset condition, including: The gear is in D gear, the throttle opening is not greater than a third preset opening, and the engine speed is not greater than a first preset speed.

8. A terminal device comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein: When the processor executes the computer program, the steps of the vehicle gear shift control method according to any one of claims 1 to 6 are implemented.

9. A computer-readable storage medium, characterized in that The computer-readable storage medium stores a computer program, and when the computer program is executed by one or more processors, the steps of the vehicle gear switching control method according to any one of claims 1 to 6 are implemented.

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