Vehicle control method, controller, computer readable storage medium, computer program product, front cabin cover system and vehicle

Abstract

The invention discloses a vehicle control method which is characterized by comprising the following steps: acquiring driving state information of a vehicle; and controlling the posture of a front cabin cover relative to a vehicle body according to the driving state information so as to change the downward pressure provided by the front cabin cover. According to the method, the downward pressure of the vehicle can be increased, and then the operation stability, safety, tire performance and the like of the vehicle are improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of vehicles, in particular to a vehicle control method, a controller, a computer readable storage medium, a computer program product, a front hood system and a vehicle. BACKGROUND

[0002] The downforce is the "soul" of vehicle aerodynamics, which enables the vehicle to break through the physical limit and obtain stronger grip and stability at high speed. In the related art, the front hood usually increases the downforce to a certain extent by using the design, but the effect is limited, and there may be a defect of insufficient downforce during high-speed driving or intense driving, thereby affecting the controllability, safety and tire performance of the vehicle. SUMMARY

[0003] The present application aims to at least solve one of the technical problems in the related art. To this end, one object of the present application is to provide a vehicle control method that can control the front hood relative to the vehicle body according to the vehicle speed, increase the downforce of the vehicle, and thus improve the controllability, safety and tire performance of the vehicle.

[0004] A second object of the present application is to provide a controller.

[0005] A third object of the present application is to provide a computer readable storage medium.

[0006] A fourth object of the present application is to provide a computer program product.

[0007] A fifth object of the present application is to provide a front hood system.

[0008] A sixth object of the present application is to provide a vehicle.

[0009] To achieve the above objects, the present application adopts the following technical solutions:

[0010] An embodiment of the first aspect of the present application provides a vehicle control method, the vehicle control method comprising: obtaining driving state information of a vehicle; controlling the attitude of a front hood relative to a vehicle body according to the driving state information to change the downforce provided by the front hood.

[0011] According to the vehicle control method of the present application, the position relationship between the front hood and the vehicle body can be actively adjusted according to the driving information of the vehicle, thereby adjusting the downforce of the vehicle during driving, and improving the controllability, safety and tire performance of the vehicle.

[0012] In some embodiments, the driving state information comprises a speed, an acceleration and a steering state of the vehicle; and the controlling the attitude of the front hood relative to the vehicle body according to the driving state information comprises: when the speed is greater than or equal to a first threshold value and the acceleration is greater than or equal to 0, controlling the front hood to keep an initial position.

[0013] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than or equal to the first threshold value and the acceleration is less than 0, and the vehicle is driving straight, controlling the front hood to keep the initial position.

[0014] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than or equal to the first threshold value and the acceleration is less than 0, and the vehicle is steering, and the speed is less than or equal to a second threshold value, controlling the front hood to keep the initial position; wherein the second threshold value is greater than the first threshold value.

[0015] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than a second threshold value and less than or equal to a third threshold value, and the acceleration is less than 0, and the vehicle is steering, controlling a rear end of the front hood to be higher than a front end, a height difference between the rear end and the front end of the front hood being a first height difference, the first height difference being greater than an initial height difference between the rear end and the front end of the front hood when the front hood keeps the initial position; wherein the second threshold value is greater than the first threshold value.

[0016] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than the third threshold value, and the acceleration is less than 0, and the vehicle is steering, controlling a rear end of the front hood to be higher than a front end, a height difference between the rear end and the front end of the front hood being a second height difference, the second height difference being greater than the first height difference.

[0017] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than the second threshold value, and the acceleration is less than 0, and the vehicle is steering, controlling the front hood to be in a first position; along a vehicle height direction, the first position is higher than an initial position of the front hood.

[0018] In some embodiments, the controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is greater than the second threshold value, and the acceleration is less than 0, and the vehicle is steering, controlling the front hood to be in a second position; along a vehicle length direction, the second position is away from a front windshield of the vehicle relative to the initial position.

[0019] In some embodiments, controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is less than the first threshold value and no pedestrian / obstacle is detected, controlling the front hood to keep the initial position.

[0020] In some embodiments, controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is less than the first threshold value and a pedestrian / obstacle is detected, controlling the rear end of the front hood to be higher than the front end, the height difference between the rear end and the front end of the front hood being a third height difference, the third height difference being greater than the initial height difference between the rear end and the front end of the front hood when the front hood keeps the initial position.

[0021] In some embodiments, controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises: when the speed is less than the first threshold value, no pedestrian / obstacle is detected, and the motor / engine temperature is less than or equal to a fourth threshold value, controlling the front hood to keep the initial position.

[0022] In some embodiments, controlling the attitude of the front hood relative to the vehicle body according to the driving state information further comprises:

[0023] when the speed is less than the first threshold value, no pedestrian / obstacle is detected, and the motor / engine temperature is greater than the fourth threshold value, controlling the front hood to be in a first position, the first position being higher than the initial position of the front hood in the vehicle height direction.

[0024] The second aspect embodiment of the present application provides a controller, comprising a processor, the processor being connected with a memory, the memory storing a computer program, and the processor being used to run the computer program in the memory to execute the vehicle control method described in the above embodiments.

[0025] The third aspect embodiment of the present application provides a computer readable storage medium, the computer readable storage medium storing a computer program, and the computer program being executed by a processor to implement the vehicle control method described in the above embodiments.

[0026] The fourth aspect embodiment of the present application provides a computer program product, comprising a computer program, and the computer program being executed by a processor to implement the vehicle control method described in the above embodiments.

[0027] The fifth aspect embodiment of the present application provides a front hood system, comprising a front hood and a motion control system used to control the motion of the front hood, the motion control system comprising an actuating mechanism used to drive the motion of the front hood and a controller, and the controller being the controller described in the above embodiments.

[0028] According to the front cabin cover system of the present application, the controller controls the actuating mechanism in the motion control system to drive the front cabin cover to move relative to the vehicle, thereby adjusting the downforce of the vehicle during driving, and improving the handling stability, safety and tire performance of the vehicle.

[0029] In some embodiments, the actuating mechanism is at least one, a first end of the actuating mechanism is adapted to be movably connected with the front cabin cover, and the other end of the actuating mechanism is adapted to be arranged on the vehicle body, and the actuating mechanism is telescopic so that the front cabin cover can move relative to the vehicle body.

[0030] In some embodiments, the actuating mechanism further comprises a piston rod and a pneumatic cylinder, one end of the piston rod is movably connected with the front cabin cover, and the other end of the piston rod is located in the pneumatic cylinder, and the pneumatic cylinder is adapted to be connected with a gas pump through a gas pipe.

[0031] In some embodiments, the actuating mechanism further comprises a piston rod, a pneumatic cylinder and a gas tank, one end of the piston rod is movably connected with the front cabin cover, and the other end of the piston rod is located in the pneumatic cylinder, and the gas pump, the gas tank and the pneumatic cylinder are connected in sequence, and a control valve is arranged on the gas pipe between the pneumatic cylinder and the gas tank.

[0032] In some embodiments, the actuating mechanism is adapted to be movably connected with the vehicle body, and the actuating mechanism is provided with a first matching part, the first matching part is adapted to be movably connected with a second matching part on the vehicle body, so that the actuating mechanism can move along the length direction of the vehicle relative to the vehicle body, and drive the front cabin cover to move relative to the vehicle body along the length direction of the vehicle.

[0033] The sixth aspect of the present application provides a vehicle, which comprises the front cabin cover system as described in the above embodiments, or comprises the controller as described in the above embodiments.

[0034] According to the vehicle of the present application, the front cabin cover can be controlled to move relative to the vehicle body according to the vehicle speed, the downforce of the vehicle is increased, and the handling stability, safety and tire performance of the vehicle are improved.

[0035] In some embodiments, the vehicle comprises a second matching part, the second matching part is arranged on the vehicle body along the length direction of the vehicle, and is movably connected with the first matching part of the actuating mechanism. BRIEF DESCRIPTION OF DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0037] Figure 1 A cross-sectional view of a vehicle according to an embodiment of the present application;

[0038] Figure 2 A schematic view of a front hood in an initial position according to an embodiment of the present application;

[0039] Figure 3 A schematic view of a front hood in a first position according to an embodiment of the present application;

[0040] Figure 4 A schematic view of a front hood in a medium pressure mode according to an embodiment of the present application;

[0041] Figure 5 A schematic view of a front hood in a high pressure mode according to an embodiment of the present application;

[0042] Figure 6 A schematic view of an actuation mechanism according to an embodiment of the present application;

[0043] Figure 7 A schematic view of a control strategy according to an embodiment of the present application;

[0044] Figure 8 A flow chart according to an embodiment of the present application.

[0045] Reference signs:

[0046] 100 - vehicle; 101 - front hood; 102 - actuation mechanism; 1021 - piston rod; 10211 - ball head; 10212 - piston; 1022 - pneumatic cylinder; 1023 - air pump; 1024 - air tank; 1025 - control valve; 1026 - first mating part; 103 - fender; 1031 - second mating part; 104 - front windshield; 105 - front bumper. DETAILED DESCRIPTION

[0047] The technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments of the present application. Based on the embodiments in the present application, all the other embodiments obtained by those skilled in the art without any creative work fall within the protection scope of the present application.

[0048] In the description of the application, it needs to be understood that the terms "upper", "lower", "left", "right", "front", "back", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or relative position relationship shown in the drawings, and are only for the convenience of describing the application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the application. Unless otherwise specified, the above orientation description can be flexibly arranged in the actual application process under the condition of meeting the relative position relationship shown in the drawings.

[0049] The terms "first", "second", "third", etc. are used only for descriptive purposes and should not be construed as indicating or implying relative importance or a specific number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the application, unless otherwise specified, the meaning of "a plurality of" is two or more.

[0050] In the description of the application, it needs to be explained that, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "communicating" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected. It can be directly connected, or indirectly connected through an intermediate medium, or the communication between the two elements. For those skilled in the art, the specific meaning of the above terms in the application can be understood according to the specific circumstances.

[0051] In the embodiments of the application, the terms "including", "containing" or any other variants thereof are intended to cover non-exclusive containing, so that the process, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or includes elements inherent to such process, article or device. Without more limitation, the element defined by the sentence "including a…" does not exclude the presence of other identical elements in the process, article or device including the element.

[0052] In the embodiments of the application, the words "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design presented as "exemplary" or "for example" in the embodiments of the application should not be construed as being more preferred or advantageous than other embodiments or design solutions. Rather, the use of "exemplary" or "for example" is intended to present concepts in a concrete manner. The embodiments of the application are described in the description of the application.

[0053] In the description of the application, specific features, structures, materials or characteristics can be combined in any one or more embodiments or examples in a suitable manner.

[0054] During the driving process of the vehicle, the downforce is crucial in the high-speed driving condition. If the downforce received by the vehicle is insufficient, there will be insufficient handling stability, and even serious accidents such as vehicle rollover, causing casualties, so how to increase the downforce of the vehicle becomes the key research content. In the related technology, the active front hood usually takes whether a pedestrian or an obstacle is detected as the trigger condition of the front hood. If a pedestrian or an obstacle is detected in front of the vehicle, the front hood is popped up through blasting or other ways to increase the positional relationship between the front hood and the front compartment component, so that the pedestrian avoids hitting the hard points such as the engine when hitting the front hood, thereby avoiding serious personal injury. However, the active front hood of the related technology does not contribute to the downforce received by the vehicle during the driving process. Therefore, the present application proposes a technical solution for increasing the downforce.

[0055] The following refers to Figures 1-8 The vehicle control method, the controller, the computer readable storage medium, the computer program product, the front hood system and the vehicle 100 of the embodiments of the present application are described.

[0056] In one embodiment, as Figure 8 shown, the vehicle control method comprises:

[0057] S1: obtaining driving state information of the vehicle 100;

[0058] S2: controlling the attitude of the front hood 101 relative to the vehicle body according to the driving state information, so as to change the downforce provided by the front hood 101.

[0059] Specifically, as Figures 1-5 shown, in terms of hardware, the front hood 101 can change its attitude relative to the vehicle body. It can be known from the principle of downforce that the height difference between the rear end and the front end of the front hood 101 determines the downforce received by the front hood 101. The method first obtains the driving state information of the vehicle 100. The present application does not limit the type of driving state information, which can include one or more of speed, acceleration and steering state. According to one or more driving state information of the vehicle 100, the front hood 101 is controlled to be in an initial position or to increase the height difference between the rear end and the front end of the front hood 101, so as to increase the downforce received by the vehicle 100. It should be explained that the initial position is the position of the front hood 101 as Figure 1 and Figure 2 shown, which is determined by the state of the specific vehicle model when it is shipped.

[0060] In one specific embodiment, the driving state information can include the speed, acceleration and steering state of the vehicle 100.

[0061] For example, the speed and acceleration information can be collected by the speed and acceleration sensors installed on the vehicle 100, and the steering state can be collected by the steering sensor installed on the vehicle 100.

[0062] Controlling the attitude of the front bonnet 101 relative to the vehicle body according to the driving state information includes: when the speed V is greater than or equal to the first threshold V T0 , and when the acceleration is greater than or equal to 0, the front engine cover 101 is controlled to maintain the initial position.

[0063] For example, if Figure 2 and Figure 7 As shown, the first threshold V T0 It can be but is not limited to 120 km / h. When the speed V is greater than or equal to 120 km / h, it is determined that the vehicle 100 enters the vehicle 100 driving into the track mode;

[0064] When the acceleration is greater than or equal to 0, that is, when the vehicle 100 is traveling at a constant speed or accelerating, the front hood 101 is controlled to maintain its initial position, maintaining a sealed state and reducing wind resistance. At this point, the rotation angle A of the front hood 101 relative to the initial position is 0°. It will be understood that the rotation angle of the front hood 101 is measured as follows: when the front hood 101 is in the initial position, a point is taken at each of the front and rear edges of the front hood 101 that intersects the centerline of the vehicle 100, and a line is drawn between the two points, which is the first line segment. When the height difference between the rear and front ends of the front hood 101 increases to a certain value, such as 40 cm, a second line segment is drawn from the two points, and the angle between the second line segment and the first line segment is the rotation angle A. Therefore, in the initial position, the rotation angle A = 0°. In the initial position, the initial height difference between the rear and front ends of the front hood 101 can be 30 cm. The present invention does not limit the range of this initial height difference; the initial height difference between the rear and front ends of the front hood 101 depends on the specific vehicle design. Since the vehicle 100 is traveling at a constant speed or accelerating, it is determined that the vehicle 100 does not need to increase downforce at this time, so the front bonnet 101 is kept in the initial position to reduce wind resistance.

[0065] In one embodiment, controlling the attitude of the front bonnet 101 relative to the vehicle body according to the driving state information further includes: when the speed V is greater than or equal to the first threshold V T0 , and the acceleration is less than 0, and when the vehicle 100 is traveling in a straight line, the front hood 101 is controlled to maintain the initial position.

[0066] When vehicle 100 is traveling in a straight line, bonnet 101 remains in its initial position, sealed, and reduces wind resistance. At this point, bonnet 101 is rotated at an angle A = 0° relative to its initial position. In this initial position, the initial height difference between the rear and front ends of bonnet 101 can be 30 cm. The present invention does not limit the range of this initial height difference, which depends on the specific vehicle design. Since vehicle 100 is decelerating and traveling in a straight line, it is determined that increased downforce is not necessary. Therefore, bonnet 101 remains in its initial position to reduce wind resistance.

[0067] In one embodiment, controlling the posture of the front hood 101 relative to the vehicle body according to the driving state information further comprises: when the speed V is greater than or equal to a first threshold value V T0 , the acceleration is less than 0, the vehicle 100 is turning, and the speed V is less than or equal to a second threshold value V T1 , the front hood 101 is controlled to remain in the initial position; wherein the second threshold value V T1 is greater than the first threshold value V T0 .

[0068] For example, the second threshold value V T1 may be, but is not limited to, 150 km / h, when the speed V is less than or equal to V T1 , the front hood 101 remains in place in a sealed state. Wherein V T1 is the limit speed of the vehicle 100 over the low-speed curve, V T1 is greater than V T0 , when the speed V is less than 150 km / h, the front hood 101 remains in place, at this time the rotation angle A of the front hood 101 relative to the initial position is 0°. The initial height difference between the rear end and the front end of the front hood 101 in the initial position can be 30 cm, the present application does not limit the range of the initial height difference, the initial height difference between the rear end and the front end of the front hood 101 depends on the specific vehicle design. Since the vehicle 100 is decelerating and turning, and the turning speed is small, it is judged that the vehicle 100 does not need to increase the downforce at this time, so the front hood 101 is kept in the initial position to reduce the wind resistance.

[0069] In one embodiment, controlling the posture of the front hood 101 relative to the vehicle body according to the driving state information further comprises: when the speed V is greater than the second threshold value V T1 and less than or equal to a third threshold value V T2 , the acceleration is less than 0, and the vehicle 100 is turning, the rear end of the front hood 101 is higher than the front end, the height difference between the rear end and the front end of the front hood 101 is a first height difference, the first height difference is greater than the initial height difference between the rear end and the front end of the front hood 101 when the front hood 101 remains in the initial position; wherein the second threshold value V T1 is greater than the first threshold value V T0 .

[0070] Specifically, as shown in Figure 4 and Figure 7 , the first threshold value V T0 may be, but is not limited to, 120 km / h, when the speed V is greater than or equal to 120 km / h, it is judged that the vehicle 100 enters the track mode, at this time, according to the driving data returned by the acceleration sensor installed on the vehicle 100, the acceleration condition of the vehicle 100 can be obtained in real time:

[0071] When the acceleration is less than 0, i.e. the vehicle 100 is decelerating, at this time according to the driving data returned by the steering sensor, the steering state of the vehicle 100 is judged:

[0072] When the vehicle 100 is steering, the driving speed of the vehicle 100 can be obtained in real time through the driving data returned by the vehicle-mounted speed sensor:

[0073] V T1 may be, but is not limited to, 150 km / h, V T2 may be, but is not limited to, 200 km / h, for example, when the speed V is 180 km / h, the vehicle 100 enters the medium-low pressure mode, the rear end of the front hood 101 is lifted to make the height difference between the rear end and the front end be a first height difference. The initial height difference between the rear end and the front end of the front hood 101 in the initial position can be 30 cm, and the present application does not limit the range of the initial height difference, and the initial height difference between the rear end and the front end of the front hood 101 depends on the specific vehicle design. The first height difference is the height of the rear end relative to the horizontal plane of the front end, and when the speed V is 180 km / h, the first height difference is 40 cm; it can be understood that the first height difference is greater than the initial height difference, and the rotation angle A of the front hood 101 relative to the initial position is 7.2°. At this time, the downward pressure on the vehicle 100 is increased by about 7 kg, which provides greater grip for the vehicle 100, improves the handling stability, safety and tire performance of the vehicle 100.

[0074] In one embodiment, controlling the posture of the front hood 101 relative to the vehicle body according to the driving state information further includes: when the speed V is greater than a third threshold value V T2 , and the acceleration is less than 0, and the vehicle 100 is steering, the rear end of the front hood 101 is controlled to be higher than the front end, and the height difference between the rear end and the front end of the front hood 101 is a second height difference, and the second height difference is greater than the first height difference.

[0075] Specifically, as shown in Figure 5 and Figure 7 , the first threshold value V T0 is 120 km / h, when the speed V is greater than or equal to 120 km / h, it is judged that the vehicle 100 enters the race track mode, at this time, according to the driving data returned by the acceleration sensor installed on the vehicle 100, the acceleration condition of the vehicle 100 can be obtained in real time:

[0076] When the acceleration is less than 0, i.e. the vehicle 100 is decelerating, at this time according to the driving data returned by the steering sensor, the steering state of the vehicle 100 is judged:

[0077] When the vehicle 100 is steering, the driving speed of the vehicle 100 can be obtained in real time through the driving data returned by the vehicle-mounted speed sensor:

[0078] VT1 may be 150 km / h, V T2 may be 200 km / h, when the speed V is 210 km / h, the transmission instruction is given, the vehicle 100 enters the high downforce mode, the rear end of the front hood 101 is controlled to be higher than the front end, and the height difference between the rear end and the front end is a second height difference. It can be understood that the second height difference is the maximum height difference between the rear end and the front end of the front hood 101 of the vehicle 100. As in the above embodiment, the first height difference is the height of the rear end relative to the horizontal plane on which the front end is located. When the speed V is 180 km / h, the first height difference can be 40 cm. When the speed V is 210 km / h, the height difference between the rear end and the front end of the front hood 101 increases to the second height difference, and the second height difference is 60 cm; the rotation angle A of the front hood 101 relative to the initial position is 12°. At this time, the downforce received by the vehicle 100 increases by about 10 kg, which provides the vehicle 100 with greater grip, and greatly improves the driving stability, safety and tire performance of the vehicle 100.

[0079] It can be understood that the calculation formula of the rotation angle A of the front hood 101 is A = ((V-V T1 ) / (V T2 -V T1 ))*12. The calculation formula of the height difference H is H = tan A.

[0080] In an embodiment, the controlling the posture of the front hood 101 relative to the vehicle body according to the driving state information further includes: when the speed V is greater than a second threshold V T1 , the acceleration is less than 0, and the vehicle 100 is driving in a turning state, the front hood 101 is controlled to be in a first position; along the height direction of the vehicle 100, the first position is higher than the initial position of the front hood 101.

[0081] Specifically, as shown in Figures 3-5 the initial position of the front hood 101 is well fitted and sealed with the surrounding structure. To increase the height difference between the rear end and the front end of the front hood 101, only lifting the rear end will cause interference between the front end of the front hood 101 and the front bumper 105. Therefore, in the medium downforce mode and the high downforce mode, the front end and the rear end of the front hood 101 are both lifted upward, and the lifting degree of the rear end is controlled to be greater than that of the front end, so as to avoid interference between the front end and the front bumper 105.

[0082] In an embodiment, the controlling the posture of the front hood 101 relative to the vehicle body according to the driving state information further includes: when the speed V is greater than a second threshold V T1 , the acceleration is less than 0, and the vehicle 100 is driving in a turning state, the front hood 101 is controlled to be in a second position; along the length direction of the vehicle 100, the second position is away from the front windshield 104 of the vehicle 100 relative to the initial position.

[0083] Specifically, as shown in Figure 4 and Figure 5 , the present application is designed to move the whole front engine hood 101 after the moving, and then move to the second position in front of the vehicle to avoid blocking the driver's view and reduce the driving risk.

[0084] In one embodiment, the control of the posture of the front engine hood 101 relative to the vehicle body according to the driving state information further comprises: when the speed V is less than the first threshold value V T0 , and no pedestrians / obstacles are detected, the front engine hood 101 is controlled to remain in the initial position.

[0085] Specifically, as shown in Figure 2 and Figure 7 , the first threshold value V T0 is 120km / h, when the speed V is less than 120km / h, it is judged that the vehicle 100 enters the low wind resistance mode, at this time the pedestrian / obstacle detection radar real-time monitors:

[0086] If no pedestrians / obstacles are detected in front, the front engine hood 101 remains in the initial position and is in a sealed state to reduce wind resistance. At this time, the rotation angle A of the front engine hood 101 relative to the initial position is 0°. In the initial position, the initial height difference between the rear end and the front end of the front engine hood 101 can be 30cm, and the present application does not limit the range of the initial height difference, which depends on the specific vehicle design. Since no pedestrians / obstacles are detected, there is no need to provide active pedestrian protection, so the front engine hood 101 remains in the initial position to reduce wind resistance.

[0087] In one embodiment, the control of the posture of the front engine hood 101 relative to the vehicle body according to the driving state information further comprises: when the speed V is less than the first threshold value V T0 , and pedestrians / obstacles are detected, the rear end of the front engine hood 101 is controlled to be higher than the front end, the height difference between the rear end and the front end of the front engine hood 101 is a third height difference, and the third height difference is greater than the initial height difference between the rear end and the front end of the front engine hood 101 when the front engine hood 101 remains in the initial position.

[0088] Specifically, as shown in Figure 4 , Figure 5 and Figure 7 , the first threshold value V T0 is 120km / h, when the speed V is less than 120km / h, it is judged that the vehicle 100 enters the low wind resistance mode, at this time the pedestrian / obstacle detection radar real-time monitors:

[0089] If pedestrians / obstacles are detected in front, instructions are transmitted to control the rear end of the front engine hood 101 to be higher than the front end, at this time, the height difference between the rear end and the front end of the front engine hood 101 is a third height difference, it can be understood that the third height difference is greater than the initial height difference, and the third height difference can also be the first height difference or the second height difference, for example, the third height difference is 60 cm; the rotation angle A of the front engine hood 101 relative to the initial position is 12°. If the pedestrian hits the front engine hood 101 at this time, it can effectively avoid hitting hard points such as engines, effectively protect the safety of pedestrians, and improve the pedestrian safety protection score.

[0090] In one embodiment, controlling the posture of the front engine hood 101 relative to the vehicle body according to the driving state information further includes: when the speed V is less than a first threshold value V T0 , and no pedestrians / obstacles are detected, and the motor / engine temperature is less than or equal to a fourth threshold value, controlling the front engine hood 101 to remain in the initial position.

[0091] Specifically, as shown in Figure 2 and Figure 7 , the first threshold value V T0 may be, but is not limited to, 120 km / h, when the speed V is less than 120 km / h, it is judged that the vehicle 100 enters a low wind resistance mode, at this time, the motor / engine temperature sensor monitors the temperature in the engine compartment in real time, if the temperature is less than or equal to t, t can be 90 degrees Celsius, then no instructions are issued, the front engine hood 101 is controlled to remain in the initial position, the wind resistance is reduced, and the temperature monitoring is further continued.

[0092] In one embodiment, controlling the posture of the front engine hood 101 relative to the vehicle body according to the driving state information further includes: when the speed V is less than a first threshold value V T0 , and no pedestrians / obstacles are detected, and the motor / engine temperature is greater than the fourth threshold value, controlling the front engine hood 101 to be in a first position; along the height direction of the vehicle 100, the first position is higher than the initial position of the front engine hood 101.

[0093] Specifically, as shown in Figure 3 and Figure 7 , the first threshold value V T0 may be, but is not limited to, 120 km / h, when the speed V is less than 120 km / h, it is judged that the vehicle 100 enters a low wind resistance mode, at this time, the motor / engine temperature sensor monitors the temperature in the engine compartment in real time, if the temperature is greater than t, t can be 90 degrees Celsius, at this time, the front engine hood 101 is controlled to be lifted as a whole to the first position, for example, the front end and the rear end are simultaneously lifted by 30 cm relative to the initial position, and the heat dissipation efficiency is increased. It can be understood that in order to make the front engine hood 101 not affect the driver's line of sight after being lifted as a whole, the present application is designed to move the front engine hood 101 to a second position after being lifted as a whole, so as to avoid blocking the driver's line of sight and reduce the driving risk.

[0094] It is understandable that the user can also choose whether to lift the front engine cover 101 vertically to the first position as a whole for heat dissipation. For example, the controller receives a heat dissipation instruction from the user and controls the front engine cover 101 to be lifted vertically to the first position as a whole.

[0095] A second embodiment of the present invention provides a controller, including a processor, which is connected to a memory. The memory stores a computer program, and the processor is used to run the computer program in the memory to execute the vehicle control method described in any of the above embodiments.

[0096] A third aspect of the present invention provides a computer-readable storage medium storing a computer program. When the computer program is executed by a processor, the vehicle control method described in any one of the above embodiments is implemented.

[0097] A fourth aspect of the present invention provides a computer program product, which includes a computer program. The computer program is executed by a processor to implement the vehicle control method described in any of the above embodiments.

[0098] The fifth embodiment of the present invention proposes a front bonnet system, including a front bonnet 101 and a motion control system for controlling the movement of the front bonnet. The motion control system includes an actuator 102 for driving the movement of the front bonnet 101 and a controller, and the controller is the controller of the above embodiment.

[0099] In a specific embodiment, there is at least one actuating mechanism 102, the first end of the actuating mechanism 102 is suitable for being movably connected to the front hood 101, and the other end of the actuating mechanism 102 is suitable for being set on the vehicle body. The actuating mechanism 102 is retractable so that the front hood 101 can move relative to the vehicle body.

[0100] Specifically, such as Figure 1 As shown, four actuators 102 are arranged in the four corners of the front bonnet 101 facing the cabin. Actuating mechanisms 102 are mounted on the vehicle body, such as on a fender 103, and are pivotally connected to the front bonnet 101, for example, via a ball joint 10211. When actuators 102 extend, corresponding portions of the front bonnet 101 are lifted, enabling adjustment of the bonnet 101's position relative to the vehicle body, such as in the aforementioned medium downforce mode, high downforce mode, and overall forward movement or vertical lift. Actuating mechanisms 102 can be powered by a motor, an electromagnetic motor, or an air pump 1023, among other sources, without specific limitations in the present invention.

[0101] In one embodiment, the actuating mechanism 102 further comprises a piston rod 1021 and a pneumatic cylinder 1022, one end of the piston rod 1021 is movably connected with the front cabin cover 101, the other end of the piston rod 1021 is located in the pneumatic cylinder 1022, and the pneumatic cylinder 1022 is adapted to be connected with the air pump 1023 through an air pipe.

[0102] Specifically, as shown in Figures 1-6 the actuating mechanism 102 is provided with the piston rod 1021 and the pneumatic cylinder 1022, one end of the piston rod 1021 is a ball head 10211, the other end of the piston rod 1021 has a piston 10212, the ball head 10211 is connected with the front cabin cover 101, the piston 10212 extends into the pneumatic cylinder 1022, and the pneumatic cylinder 1022 is connected with the air pump 1023 through an air pipe; when the rear end or the front end of the front cabin cover 101 needs to be lifted, the controller controls the air pump 1023 to inflate the pneumatic cylinder 1022, the pressure in the pneumatic cylinder 1022 increases, the piston rod 1021 is elongated upward, and the corresponding part of the front cabin cover 101 is lifted upward.

[0103] In one embodiment, the actuating mechanism 102 further comprises a piston rod 1021, a pneumatic cylinder 1022 and a gas tank 1024, one end of the piston rod 1021 is movably connected with the front cabin cover 101, the other end of the piston rod 1021 is located in the pneumatic cylinder 1022, the air pump 1023, the gas tank 1024 and the pneumatic cylinder 1022 are connected in sequence, and a control valve 1025 is arranged on the air pipe between the pneumatic cylinder 1022 and the gas tank 1024.

[0104] Specifically, as shown in Figures 1-6 the actuating mechanism 102 is provided with the piston rod 1021, the pneumatic cylinder 1022 and the gas tank 1024, one end of the piston rod 1021 is a ball head 10211, the other end of the piston rod 1021 has a piston 10212, the ball head 10211 is connected with the front cabin cover 101, the piston 10212 extends into the pneumatic cylinder 1022, the air pump 1023, the gas tank 1024 and the pneumatic cylinder 1022 are connected in sequence through an air pipe, and the control valve 1025 is arranged on the air pipe between the pneumatic cylinder 1022 and the gas tank 1024. It can be understood that the air pump 1023 pre-inflates the gas tank 1024, the control valve 1025 remains closed, at this time the gas tank 1024 is in a high-pressure environment, when it is detected that there is a pedestrian / obstacle in front, the controller controls the control valve 1025 to open, the gas tank 1024 rapidly deflates the pneumatic cylinder 1022, the piston rod 1021 is rapidly elongated, and the front cabin cover 101 is rapidly popped up, quickly responding to pedestrian protection.

[0105] In one embodiment, the actuating mechanism 102 is adapted to be movably connected with the vehicle body, the actuating mechanism 102 is provided with a first matching part 1026, the first matching part 1026 is adapted to be movably connected with a second matching part 1031 on the vehicle body, so that the actuating mechanism 102 can move along the length direction of the vehicle 100 relative to the vehicle body, to drive the front hood 101 to move along the length direction of the vehicle 100 relative to the vehicle body.

[0106] Specifically, as shown in Figures 1-6 the actuating mechanism 102 is provided on the vehicle body, such as the fender 103, the actuating mechanism 102 can move relative to the fender 103, the fender 103 is provided with a slide rod, that is, the second matching part 1031 is a slide rod; the end of the actuating mechanism 102 connected with the fender 103 is configured as a slide block sleeved on the slide rod, that is, the first matching part 1026 is a slide block; the slide block can slide along the slide rod, it can be understood that the actuating mechanism 102 can slide along the length direction of the vehicle relative to the fender 103 under the driving of a conventional driving part such as a motor. Realize the front hood 101 moves forward as a whole in the foregoing embodiment, the sliding process is smoother, not jammed, and the motion beauty is increased.

[0107] The fifth aspect embodiment of the present application provides a vehicle 100, which comprises the front hood system of the above-mentioned embodiments, or comprises the controller of the above-mentioned embodiments.

[0108] Specifically, as shown in Figures 1-5 the front hood 101 is provided at the front end of the vehicle 100, and the actuating mechanism 102 is provided between the front hood 101 and the vehicle body, under the driving of the actuating mechanism 102, the front hood 101 can be in the initial position, the medium pressure mode, the high pressure mode, the first position and the second position in the foregoing embodiments. When the front hood 101 is in the initial position, the resistance during driving of the vehicle 100 is smallest, the pressure is also smallest, and the vehicle 100 is relatively poor in stability; when the front hood 101 is in the medium pressure mode, the pressure is relatively increased compared with the initial position, and the vehicle 100 is improved in stability; when the front hood 101 is in the high pressure mode, the pressure is maximum compared with the initial position, and the vehicle 100 is best in stability; when the front hood 101 is in the first position, the heat dissipation effect of the front compartment components such as the engine is best, and the heat dissipation efficiency is highest.

[0109] In some embodiments, the vehicle 100 comprises a second matching part 1031, which is provided on the vehicle body along the length direction of the vehicle 100 and is movably connected with the first matching part 1026 of the actuating mechanism 102.

[0110] Specifically, as shown in Figures 1-6As shown, the actuating mechanism 102 is arranged on the vehicle body, such as the wing panel 103, and the actuating mechanism 102 is movable relative to the wing panel 103. The wing panel 103 is provided with a slide rod, i.e., the second matching member 1031 is a slide rod. The end of the actuating mechanism 102 connected with the wing panel 103 is configured as a slide block arranged on the slide rod, i.e., the first matching member 1026 is a slide block. The slide block is slidable along the slide rod. It can be understood that the actuating mechanism 102 can be driven by a conventional driving member such as a motor to slide along the vehicle length direction relative to the wing panel 103. The front hood 101 is moved forward as a whole, the sliding process is smoother, and the motion is more beautiful.

[0111] It can be understood that all the rotatable connections mentioned in the present application can be the structure of a conventional rotatable connection such as a pin shaft and a sleeve.

[0112] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0113] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirit of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A vehicle control method, characterized in that: The vehicle control method includes: Obtain vehicle driving status information; The posture of the front bonnet (101) relative to the vehicle body is controlled according to the driving state information to change the downforce provided by the front bonnet (101).

2. The vehicle control method according to claim 1, characterized in that: The driving state information includes the speed, acceleration and steering state of the vehicle; Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information includes: When the speed is greater than or equal to a first threshold value and the acceleration is greater than or equal to 0, the front engine cover (101) is controlled to maintain an initial position.

3. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than or equal to the first threshold, the acceleration is less than 0, and the vehicle is traveling in a straight line, the front bonnet (101) is controlled to maintain an initial position.

4. The vehicle control method according to claim 2, wherein: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than or equal to the first threshold, the acceleration is less than 0, the vehicle is turning, and the speed is less than or equal to a second threshold, the front hood (101) is controlled to maintain an initial position; wherein the second threshold is greater than the first threshold.

5. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than a second threshold and less than or equal to a third threshold, and the acceleration is less than 0, and the vehicle is turning, the rear end of the front bonnet (101) is controlled to be higher than the front end, and the height difference between the rear end and the front end of the front bonnet (101) is a first height difference, and the first height difference is greater than the initial height difference between the rear end and the front end when the front bonnet (101) maintains an initial position; wherein the second threshold is greater than the first threshold.

6. The vehicle control method according to claim 5, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than the third threshold value, the acceleration is less than 0, and the vehicle is turning, the rear end of the front bonnet (101) is controlled to be higher than the front end, and the height difference between the rear end and the front end of the front bonnet (101) is a second height difference, and the second height difference is greater than the first height difference.

7. The vehicle control method according to claim 5 or 6, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than the second threshold value, the acceleration is less than 0, and the vehicle is turning, the front bonnet (101) is controlled to be in a first position; along the vehicle height direction, the first position is higher than the initial position of the front bonnet (101).

8. The vehicle control method according to claim 7, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is greater than the second threshold value, the acceleration is less than 0, and the vehicle is turning, the front hood (101) is controlled to be in a second position; along the length direction of the vehicle, the second position is farther away from the front windshield (104) of the vehicle relative to the initial position.

9. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is less than the first threshold and no pedestrians or obstacles are detected, the front engine cover (101) is controlled to maintain an initial position.

10. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is less than the first threshold and a pedestrian / obstacle is detected, the rear end of the front bonnet (101) is controlled to be higher than the front end, and the height difference between the rear end and the front end of the front bonnet (101) is a third height difference, and the third height difference is greater than the initial height difference between the rear end and the front end when the front bonnet (101) maintains the initial position.

11. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is less than the first threshold, no pedestrians / obstacles are detected, and the motor / engine temperature is less than or equal to a fourth threshold, the front bonnet (101) is controlled to maintain an initial position.

12. The vehicle control method according to claim 2, characterized in that: Controlling the posture of the front bonnet (101) relative to the vehicle body according to the driving state information further includes: When the speed is less than the first threshold, no pedestrians / obstacles are detected, and the motor / engine temperature is greater than a fourth threshold, the front bonnet (101) is controlled to be in a first position; along the vehicle height direction, the first position is higher than the initial position of the front bonnet (101).

13. A controller, characterized in that: The method comprises a processor connected to a memory, wherein the memory stores a computer program, and the processor is configured to run the computer program in the memory to execute the vehicle control method according to any one of claims 1 to 12.

14. 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 a processor, the vehicle control method according to any one of claims 1 to 12 is implemented.

15. A computer program product, characterized in that The vehicle control method includes a computer program, which is executed by a processor to implement the vehicle control method according to any one of claims 1 to 12.

16. A front engine cover system, characterized in that: The invention comprises a front bonnet (101) and a motion control system for controlling the movement of the front bonnet, wherein the motion control system comprises an actuating mechanism (102) for driving the movement of the front bonnet (101) and a controller, wherein the controller is the controller according to claim 13.

17. The front engine cover system according to claim 16, characterized in that: There is at least one actuating mechanism (102), a first end of which is adapted to be movably connected to the front bonnet (101), and another end of which is adapted to be arranged on a vehicle body. The actuating mechanism (102) is retractable so that the front bonnet (101) can move relative to the vehicle body.

18. The front engine cover system according to claim 17, characterized in that: The actuating mechanism (102) further comprises a piston rod (1021) and a pneumatic cylinder (1022), one end of the piston rod (1021) being movably connected to the front engine cover (101), the other end of the piston rod (1021) being located in the pneumatic cylinder (1022), and the pneumatic cylinder (1022) being adapted to be connected to an air pump (1023) via an air pipe.

19. The front engine cover system according to claim 17, wherein: The actuating mechanism (102) further comprises a piston rod (1021), a pneumatic cylinder (1022) and an air tank (1024); one end of the piston rod (1021) is movably connected to the front engine cover (101); the other end of the piston rod (1021) is located in the pneumatic cylinder (1022); an air pump (1023), the air tank (1024) and the pneumatic cylinder (1022) are connected in sequence, and a control valve (1025) is provided on the air pipe between the pneumatic cylinder (1022) and the air tank (1024).

20. The front engine cover system according to claim 17, wherein: The actuating mechanism (102) is adapted to be movably connected to the vehicle body, and the actuating mechanism (102) is provided with a first mating piece (1026), and the first mating piece (1026) is adapted to be movably connected to a second mating piece (1031) on the vehicle body, so that the actuating mechanism (102) can move relative to the vehicle body along the length direction of the vehicle, thereby driving the front hood (101) to move relative to the vehicle body along the length direction of the vehicle.

21. A vehicle (100), characterized in that The vehicle comprises the front bonnet system according to any one of claims 16 to 20, or comprises the controller according to claim 13.

22. The vehicle (100) according to claim 21, characterized in that The vehicle comprises a second matching component (1031), which is arranged on the vehicle body along the length direction of the vehicle and is movably connected to the first matching component (1026) of the actuating mechanism (102).

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