Hydraulic bushing control method and vehicle

Abstract

This invention discloses a control method for a hydraulic bushing and a vehicle thereof. The method includes: acquiring vehicle control mode information and vehicle condition information, wherein the vehicle control mode information includes at least one of the following: sport mode and comfort mode; and the vehicle condition information includes at least one of the following: acceleration, speed, road surface excitation signal, vehicle warning information, and steering signal; generating a control command set based on the vehicle control mode information and vehicle condition information, the control command set being used to control the displacement of a flow regulating valve within a flow channel. This invention solves the technical problem that the lack of a variable damping hydraulic bushing control method prevents vehicles from simultaneously achieving sportiness and comfort.

Description

Technical Field

[0001] This invention relates to the field of hydraulic bushing control technology, and more specifically, to a hydraulic bushing control method and vehicle. Background Technology

[0002] Currently, the commonly used bushings for passenger vehicle control arms are rubber bushings and hydraulic bushings. Rubber bushings are low-cost and can isolate a certain amount of vibration; hydraulic bushings provide damping force and have a good ability to attenuate vibrations. However, currently used hydraulic bushings can only provide high damping within a certain frequency range. The damping of these hydraulic bushings is not adjustable, and the frequency of impacts on the vehicle is related to vehicle speed: at higher speeds, the bushing experiences lower impact frequencies; at higher speeds, the bushing experiences higher impact frequencies. For current vehicles, many models offer comfort and sport modes. In sport mode, some handling is lost due to the damping of the hydraulic bushing. Because the damping of ordinary hydraulic bushings is not adjustable, it cannot simultaneously achieve both vehicle comfort and sportiness, nor can it balance damping force during high-speed and low-speed impacts, resulting in it only providing good comfort within a certain fixed speed range.

[0003] Currently, no control method has been developed for this type of hydraulic bushing.

[0004] There is currently no effective solution to the above problems. Summary of the Invention

[0005] This invention provides a control method for hydraulic bushings and a vehicle, to at least solve the technical problem that the lack of a variable damping hydraulic bushing control method makes it impossible for a vehicle to balance sportiness and comfort.

[0006] According to one aspect of the present invention, a control method for a hydraulic bushing is provided. The hydraulic bushing has a flow regulating valve, which can adjust the cross-sectional area of ​​the flow channel of the hydraulic bushing. The flow regulating valve is movably disposed within the flow channel. The method includes: acquiring vehicle control mode information and vehicle condition information, wherein the vehicle control mode information includes at least one of the following: sport mode and comfort mode, and the vehicle condition information includes at least one of the following: acceleration, speed, road excitation signal, vehicle warning information, and steering signal; generating a control instruction set based on the vehicle control mode information and vehicle condition information, the control instruction set being used to control and regulate the displacement of the flow regulating valve within the flow channel.

[0007] Optionally, a control instruction set is generated based on vehicle control mode information and vehicle condition information, including: in response to the target vehicle's control mode being a motion mode, generating one of a first target control instruction in the control instruction set and a second target control instruction in the control instruction set based on the vehicle condition information, wherein the first target control instruction is used to control the flow regulating valve to move a first preset distance within the flow channel so that the flow regulating valve completely closes the flow channel, and the second target control instruction is used to control the flow regulating valve to move a second preset distance within the flow channel so that the flow regulating valve partially opens the flow channel.

[0008] Optionally, one of the first target control instruction and the second target control instruction in the control instruction set is generated based on the vehicle condition information, including: determining whether the speed of the target vehicle is within a preset speed range; if so, generating the first target control instruction.

[0009] Optionally, generating one of the first target control command and the second target control command in the control command set based on the vehicle condition information may further include: determining whether the road excitation signal is greater than a preset excitation value; if so, generating the second target control command.

[0010] Optionally, there are two sets of hydraulic bushings, which are respectively installed on both sides of the suspension axis of the target vehicle. Based on the vehicle control mode information and vehicle condition information, a control command set is generated. It also includes: in response to the target vehicle's control mode being comfort mode, generating a first target control command, a second target control command, and a third target control command from the control command set based on the vehicle condition information. The third target control command is used to control the hydraulic bushing on one side to fully open the flow channel, and the third target control command is used to control the hydraulic bushing on the other side to fully close the flow channel.

[0011] Optionally, one of the first target control command, the second target control command, and the third target control command in the control command set is generated based on the vehicle condition information, including: determining whether the target vehicle will be hit by a single-sided collision based on the vehicle warning information; and generating the third target control command when it is determined that the target vehicle will be hit by a single-sided collision.

[0012] Optionally, generating one of the first target control command, the second target control command, and the third target control command in the control command set based on vehicle condition information includes: generating the first target control command in response to acceleration being greater than a preset maximum value or acceleration being greater than a preset minimum value.

[0013] Optionally, one of the first target control command, the second target control command, and the third target control command in the control command set is generated based on the vehicle condition information, including: determining whether the target vehicle will turn based on the turn signal; and generating the third target control command when it is determined that the target vehicle will turn.

[0014] Optionally, generating one of the first target control command, the second target control command, and the third target control command in the control command set based on vehicle condition information may further include: determining whether the speed of the target vehicle is within a preset speed range; if so, generating the second target control command.

[0015] According to another aspect of the present invention, a vehicle is also provided, including a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor executes the above-described method through the computer program.

[0016] In this embodiment of the invention, by acquiring vehicle control mode information and vehicle condition information, and generating control commands based on the vehicle control mode information and vehicle condition information, the displacement of the flow regulating valve in the flow channel is adjusted according to different situations. This achieves the technical effect of timely adjustment of the damping of the hydraulic bushing, thereby solving the technical problem that the vehicle cannot balance sportiness and comfort due to the lack of a variable damping hydraulic bushing control method. Attached Figure Description

[0017] The accompanying drawings, which are included to provide a further understanding of the invention and form part of this application, illustrate exemplary embodiments of the invention and, together with their description, serve to explain the invention and do not constitute an undue limitation thereof. In the drawings:

[0018] Figure 1 This is a hardware structure block diagram of a computer terminal for a control method of a hydraulic bushing according to an optional embodiment of the present invention.

[0019] Figure 2 This is a flowchart of a control method for a hydraulic bushing according to an optional embodiment of the present invention;

[0020] Figure 3 This is a schematic flowchart of a control method for a hydraulic bushing according to an optional embodiment of the present invention;

[0021] Figure 4 This is a control principle diagram of a control method for a hydraulic bushing according to an optional embodiment of the present invention;

[0022] Figure 5 A schematic diagram of the structure of a first embodiment of the hydraulic bushing according to the present invention is shown;

[0023] Figure 6 A schematic diagram of a second embodiment of the hydraulic bushing according to the present invention is shown;

[0024] Figure 7 A schematic diagram of a third embodiment of the hydraulic bushing according to the present invention is shown;

[0025] Figure 8 A schematic diagram of a fourth embodiment of the hydraulic bushing according to the present invention is shown;

[0026] Figure 9 A schematic diagram of an embodiment of the flow channel regulating valve according to the present invention is shown;

[0027] Figure 10 A schematic diagram of a fifth embodiment of the hydraulic bushing according to the present invention is shown;

[0028] Figure 11 A schematic diagram of a sixth embodiment of the hydraulic bushing according to the present invention is shown;

[0029] Figure 12 A schematic diagram of a seventh embodiment of the hydraulic bushing according to the present invention is shown;

[0030] Figure 13 It shows Figure 12 A partial cross-sectional view of the embodiment at point DD;

[0031] Figure 14 A schematic diagram of the structure of an eighth embodiment of the hydraulic bushing according to the present invention is shown.

[0032] The above figures include the following reference numerals:

[0033] 1. Outer tube; 11. Opening; 2. Main spring; 3. Skeleton; 4. Inner tube; 5. Flow channel regulating valve; 51. First sealing rubber; 52. Controlled tooth; 53. Base; 54. Side ear; 6. First flow channel plate; 7. Buffer rubber; 8. Second flow channel plate; 61. Mounting recess; 62. First guide structure; 63. Second sealing rubber; 81. Second guide structure;

[0034] 100, vulcanized surface; 101, gap. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of the present invention.

[0036] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this invention are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of the invention described herein can be implemented in orders other than those illustrated or described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0037] According to one embodiment of the present invention, an embodiment of a control method for a hydraulic bushing is provided. It should be noted that the steps shown in the flowchart in the accompanying drawings can be executed in a computer system such as a set of computer-executable instructions. Furthermore, although a logical order is shown in the flowchart, in some cases the steps shown or described may be executed in a different order than that shown here.

[0038] This method embodiment can be executed in an electronic device or similar computing device that includes memory and a processor within a vehicle. Taking an electronic device running in a vehicle as an example, such as... Figure 1 As shown, the vehicle's electronic devices may include one or more processors 102 (processors may include, but are not limited to, central processing units (CPUs), graphics processing units (GPUs), digital signal processing (DSP) chips, microprocessors (MCUs), programmable logic devices (FPGAs), neural network processors (NPUs), tensor processors (TPUs), artificial intelligence (AI) type processors, etc.) and a memory 104 for storing data. Optionally, the vehicle's electronic devices may also include a transmission device 106 for communication functions, an input / output device 108, and a display device 110. Those skilled in the art will understand that... Figure 1 The structures shown are for illustrative purposes only and do not limit the structure of the electronic devices in the vehicle described above. For example, the electronic devices in a vehicle may include more or fewer components than those described above, or have a different configuration than those described above.

[0039] The memory 104 can be used to store computer programs, such as application software programs and modules, like the computer program corresponding to the hydraulic bushing control method in this embodiment of the invention. The processor 102 executes various functional applications and data processing by running the computer program stored in the memory 104, thereby realizing the aforementioned hydraulic bushing control method. The memory 104 may include high-speed random access memory, and may also include non-volatile memory, such as one or more magnetic storage devices, flash memory, or other non-volatile solid-state memory. In some instances, the memory 104 may further include memory remotely located relative to the processor 102, and these remote memories can be connected to a mobile terminal via a network. Examples of such networks include, but are not limited to, the Internet, corporate intranets, local area networks, mobile communication networks, and combinations thereof.

[0040] The transmission device 106 is used to receive or send data via a network. Specific examples of the network described above may include a wireless network provided by the mobile terminal's communication provider. In one example, the transmission device 106 includes a Network Interface Controller (NIC), which can connect to other network devices via a base station to communicate with the Internet. In another example, the transmission device may be a Radio Frequency (RF) module, used for wireless communication with the Internet.

[0041] Display device 110 may be, for example, a touchscreen liquid crystal display (LCD) and a touch display (also referred to as a "touchscreen" or "touch display"). The LCD allows a user to interact with the user interface of the mobile terminal. In some embodiments, the mobile terminal has a graphical user interface (GUI), which allows the user to interact with the GUI via finger contact and / or gestures on a touch-sensitive surface. Optional human-computer interaction functions include: creating web pages, drawing, word processing, creating electronic documents, playing games, video conferencing, instant messaging, sending and receiving emails, a call interface, playing digital video, playing digital music, and / or web browsing, etc. Executable instructions for performing the above human-computer interaction functions are configured / stored in one or more processor-executable computer program products or readable storage media.

[0042] This embodiment provides a control method for the hydraulic bushing of an electronic device operating in the aforementioned vehicle. Figure 2 This is a flowchart of a control method for a hydraulic bushing according to one embodiment of the present invention, such as... Figure 2 As shown, the process includes the following steps:

[0043] Step S1: Obtain vehicle control mode information and vehicle condition information. The vehicle control mode information includes at least one of the following: sport mode and comfort mode. The vehicle condition information includes at least one of the following: acceleration, speed, road excitation signal, vehicle warning information, and steering signal.

[0044] Step S2: Generate a control instruction set based on vehicle control mode information and vehicle condition information. The control instruction set is used to control the displacement of the flow regulating valve in the flow channel.

[0045] Through the above steps, by acquiring vehicle control mode information and vehicle condition information, and generating control commands based on the vehicle control mode information and vehicle condition information, the displacement of the flow regulating valve in the flow channel is adjusted according to different situations. This achieves the technical effect of timely adjustment of the damping of the hydraulic bushing, and solves the technical problem that the vehicle cannot balance sportiness and comfort due to the lack of a variable damping hydraulic bushing control method.

[0046] Figure 4 The control principle diagram of the hydraulic bushing is shown.

[0047] Optionally, a control command set is generated based on vehicle control mode information and vehicle condition information, including:

[0048] In response to the target vehicle's control mode being Sport mode, one of the first target control command and the second target control command in the control command set is generated based on vehicle condition information. The first target control command is used to control the flow regulating valve to move a first preset distance within the flow channel so that the flow regulating valve completely closes the flow channel. The second target control command is used to control the flow regulating valve to move a second preset distance within the flow channel so that the flow regulating valve partially opens the flow channel.

[0049] In other words, the first target control command is used to completely close the flow channel, at which point the hydraulic bushing will not provide damping force. The second target control command is used to enable the hydraulic bushing to provide partial damping force, balancing power and comfort.

[0050] Optionally, one of the first target control command in the control command set and the second target control command in the control command set is generated based on the vehicle condition information, including:

[0051] Determine whether the target vehicle's speed is within a preset speed range;

[0052] If so, generate the first target control command.

[0053] In other words, if the vehicle is in Sport mode, and if the vehicle is always traveling at a constant or near-constant speed, the control flow channels are completely closed, and the bushings do not provide damping force. In this mode, the vehicle's sportiness is at its best, but comfort is poor. The vehicle control mode information is obtained by the vehicle controller.

[0054] Optionally, generating one of the first target control command in the control command set and the second target control command in the control command set based on vehicle condition information also includes:

[0055] Determine whether the road surface excitation signal is greater than the preset excitation value;

[0056] If so, generate the second target control command.

[0057] The road surface excitation signal originates from road bumps; for example, encountering a pothole will generate a corresponding road surface excitation signal. That is, when the vehicle determines whether the road surface excitation signal exceeds a preset excitation value, it opens the hydraulic bushing flow channel, selects an appropriate hydraulic bushing flow channel cross-sectional area, and chooses a suitable damping force range to reduce vehicle pitch and provide better comfort; after passing a pothole, the flow channel closes to maintain vehicle motion. The process of the vehicle determining whether the road surface excitation signal exceeds the preset excitation value includes: in Sport mode, the road surface excitation signal is detected, and the vehicle state is analyzed by the vehicle controller. When the vehicle encounters a pothole, the hydraulic bushing flow channel is opened, an appropriate hydraulic bushing flow channel cross-sectional area is selected, and a suitable damping force range is chosen to reduce vehicle pitch and provide better comfort; after passing a pothole, the flow channel closes to maintain vehicle motion.

[0058] Optionally, the hydraulic bushings are in two sets, with the two sets respectively installed on both sides of the suspension axis of the target vehicle. The system generates a control command set based on vehicle control mode information and vehicle condition information, and also includes:

[0059] In response to the target vehicle's control mode being set to Comfort mode, a first target control command, a second target control command, and one of a third target control command from the control command set are generated based on vehicle condition information. The third target control command is used to control the hydraulic bushing on one side to fully open the flow channel, and the third target control command is used to control the hydraulic bushing on the other side to fully close the flow channel. In other words, the third target control command is used to control the opening of the flow channel of a single hydraulic bushing.

[0060] Optionally, in response to the target vehicle's control mode being comfort mode, one of a first target control command, a second target control command, and a third target control command from the control command set is generated based on vehicle condition information, including:

[0061] Determine whether the target vehicle will be hit from one side based on vehicle warning information;

[0062] When it is determined that the target vehicle will be subjected to a single-sided impact, a third target control command is generated.

[0063] In other words, in comfort mode, when a single-sided impact occurs, the hydraulic flow channel on one side needs to be activated.

[0064] Optionally, in response to the target vehicle's control mode being comfort mode, one of a first target control command, a second target control command, and a third target control command from the control command set is generated based on vehicle condition information, including:

[0065] In response to an acceleration greater than a preset maximum value or an acceleration greater than a preset minimum value, a first target control command is generated.

[0066] In other words, when the vehicle accelerates or brakes rapidly (or under other conditions that cause the vehicle to pitch), the hydraulic bushing flow channel can be closed to improve the vehicle's anti-pitch capability.

[0067] Optionally, in response to the target vehicle's control mode being comfort mode, one of a first target control command, a second target control command, and a third target control command from the control command set is generated based on vehicle condition information, including:

[0068] Determine whether the target vehicle will turn based on the turn signal;

[0069] When it is determined that the target vehicle will turn, a third target control command is generated.

[0070] In other words, when the vehicle is turning (or under other conditions that cause the vehicle to roll), the cross-sectional area of ​​the hydraulic bushing can be reduced or closed to improve the vehicle's anti-roll capability. Alternatively, a single-sided flow channel can be opened.

[0071] Optionally, in response to the target vehicle's control mode being comfort mode, generating one of a first target control command, a second target control command, and a third target control command from the control command set based on vehicle condition information, further includes:

[0072] Determine whether the target vehicle's speed is within a preset speed range;

[0073] If so, generate the second target control command.

[0074] In other words, when a vehicle is traveling in a straight line at a certain speed, a suitable flow channel cross-sectional area is selected to provide appropriate damping force within this speed range.

[0075] The bushing system using the technical solution of this application consists of four hydraulic bushings (installed between the control arm and the subframe, serving as buffers and vibration dampers), a height sensor, an acceleration sensor, a vehicle speed sensor, a vision sensor, a vehicle controller (providing vehicle modes), and a bushing control unit. By controlling each of the four hydraulic bushings installed on the front and rear control arms of the passenger vehicle individually, the vehicle's dynamic characteristics can be altered to adapt to different vehicle mode selections or provide better comfort over a wider speed range. The height, speed, and acceleration signals, as well as road excitation signals, are collected by the height, speed, acceleration, and vision sensors. The vehicle controller analyzes the vehicle state and selects appropriate hydraulic bushing damping to achieve a better balance between comfort and dynamics.

[0076] In addition to the basic performance mentioned above, other control strategies can be added to improve the overall quality of the vehicle: for example, by coordinating with the shock absorber and air spring system, the vehicle's handling stability can be better controlled.

[0077] Figure 3 This is a control step diagram of a control method for a hydraulic bushing according to one optional embodiment of the present invention. Figure 3 As shown, vehicle speeds 1 to 3 correspond to different cross-sectional areas, and a linear correspondence can be used between them.

[0078] Embodiments of the present invention also provide a vehicle including a memory and a processor configured to run a computer program to perform the steps in any of the above method embodiments.

[0079] Optionally, in this embodiment, the processor can be configured to perform the following steps via a computer program:

[0080] Step S10: Obtain vehicle control mode information and vehicle condition information. The vehicle control mode information includes at least one of the following: sport mode and comfort mode. The vehicle condition information includes at least one of the following: acceleration, speed, road excitation signal, vehicle warning information, and steering signal.

[0081] Step S20: Generate a control instruction set based on vehicle control mode information and vehicle condition information. The control instruction set is used to control the displacement of the flow regulating valve in the flow channel.

[0082] Combination Figures 5 to 14 As shown, a hydraulic bushing is provided according to a specific embodiment of this application.

[0083] The hydraulic bushing includes: a main spring 2, which has two independent mounting cavities; a liquid guiding structure, which includes a first flow channel plate 6 and a second flow channel plate 8, which are respectively located in the two mounting cavities. Both the first flow channel plate 6 and the second flow channel plate 8 are connected to the main spring 2. A first liquid cavity is formed between the inner sidewall of the first flow channel plate 6 and the main spring 2, and a second liquid cavity is formed between the inner sidewall of the second flow channel plate 8 and the main spring 2. A first flow guiding structure 62 communicating with the first liquid cavity is provided on the outer surface of the first flow channel plate 6, and a second flow guiding structure 81 communicating with the second liquid cavity is provided on the outer surface of the second flow channel plate 8. The first flow guiding structure 62 and the second flow guiding structure 81 are connected; and a flow channel regulating valve 5, which is at least one and is located inside at least one of the first flow guiding structure 62 and the second flow guiding structure 81. The flow channel regulating valve 5 is used to regulate the flow rate of at least one of the first flow guiding structure 62 and the second flow guiding structure 81.

[0084] By applying the technical solution of this embodiment, the flow rate of at least one of the first guide structure 62 and the second guide structure 81 is adjusted by setting the flow channel regulating valve 5, thereby adjusting the damping force range of the hydraulic bushing. Real-time adjustment of the damping force allows the vehicle to balance sportiness and comfort. The technical solution of this application effectively solves the problem that the damping of the hydraulic bushing cannot be adjusted in the prior art. In this solution, the flow rate is adjusted by adjusting the cross-sectional area of ​​the flow channels of the first guide structure 62 and the second guide structure 81. The flow channel regulating valve 5 can move inside the first guide structure 62 to block part of the flow channel, thus changing the cross-sectional area of ​​the flow channel. The flow channel regulating valve 5 can also move inside the second guide structure 81 to block part of the flow channel, thus changing the cross-sectional area of ​​the flow channel.

[0085] The reason why hydraulic bushing damping is not adjustable and the method of damping adjustment: For hydraulic bushings, the damping force is generated when liquid flows through different chambers in the flow channel, producing damping. The magnitude of the damping force of the hydraulic bushing is related to the stiffness of the main spring, the equivalent piston area, the volumetric stiffness of the chamber, the length of the flow channel, and the cross-sectional area of ​​the flow channel. In engineering applications, the damping force range of the bushing is mainly adjusted by adjusting the cross-sectional area of ​​the flow channel: the larger the cross-sectional area of ​​the flow channel, the larger the high damping force frequency range of the hydraulic bushing; the smaller the cross-sectional area of ​​the flow channel, the smaller the high damping force frequency range of the hydraulic bushing; when the flow channel of the hydraulic bushing is completely closed, the hydraulic bushing provides no damping.

[0086] Specifically, the rubber main spring 2 and the first flow channel plate 6, as well as the main spring 2 and the second flow channel plate 8, respectively form two independent liquid chambers. The two chambers are connected by flow channels on the flow channel plates, allowing the liquid in both chambers to flow through these channels. The liquid flow generates damping and dynamic stiffness. The liquid is typically a water / ethylene glycol mixture or an ethylene glycol / propylene glycol mixture.

[0087] Furthermore, the first flow channel plate 6 is a semi-circular arc-shaped plate structure. The first flow guiding structure 62 includes an arc-shaped main body groove extending circumferentially along the first flow channel plate 6. The first flow guiding structure 62 also includes a mounting recess 61 disposed on the outer surface of the first flow channel plate 6. The mounting recess 61 communicates with the arc-shaped main body groove. The flow channel regulating valve 5 is installed in the mounting recess 61. The flow channel regulating valve 5 is movably disposed along the width direction of the first flow guiding structure 62 or the width direction of the second flow guiding structure 81. The flow channel regulating valve 5 has a hidden position completely located in the mounting recess 61, and the flow channel regulating valve 5 has multiple working positions at least partially entering the arc-shaped main body groove. Figure 8 The top view of the first flow channel plate shown shows that the mounting recess 61 is preferably a T-shaped groove with a connecting port at one end, through which the flow channel regulating valve 5 can at least partially enter the arc-shaped main body groove.

[0088] Furthermore, the flow channel regulating valve 5 includes a base 53 and two side ears 54, which are located on opposite sides of the base 53 along its length. The shape of the mounting recess 61 is adapted to the shape of the flow channel regulating valve 5. When the flow channel regulating valve 5 is in the concealed position, it is engaged within the mounting recess 61 by the two side ears 54. The flow channel regulating valve 5 forms an inverted T-shaped structure that adapts to the T-shaped groove of the mounting recess 61. The flow channel regulating valve 5 is mounted within the mounting recess 61 through this structure, and it can move along the groove direction of the mounting recess 61 on the first flow channel plate 6.

[0089] Preferably, to reduce friction during movement, making control easier and preventing harmful wear between the flow channel regulating valve 5 and the first flow channel plate, lubricating grease is applied between the flow channel regulating valve 5 and the first flow channel plate. The type of lubricating grease can be selected as needed. Figure 6 The skeleton 3 is also shown in the image.

[0090] Furthermore, the hydraulic bushing also includes an outer tube 1, which is located outside the main spring 2. A controlled tooth 52 is provided on the top of the base 53, and an opening 11 is provided on the outer tube 1. The controlled tooth 52 is connected to the drive structure located outside the outer tube 1 through the opening 11.

[0091] To allow the flow channel regulating valve 5 to be controlled by the control mechanism, the flow channel regulating valve 5 has controlled teeth 52, and the outer tube 1 of the bushing has an opening 11. The control mechanism can drive the gear meshing with the controlled teeth 52 by a motor or other means to control the position of the flow channel regulating valve 5, thereby adjusting the flow channel cross-sectional area and achieving the purpose of adjusting the damping and dynamic stiffness of the hydraulic bushing.

[0092] Optionally, to reduce friction and harmful wear during movement, grease is also applied to the contact surfaces between the flow regulating valve 5 and the outer tube 1, especially between the sealing rubber and the outer tube 1. The type of grease can be selected as needed.

[0093] Furthermore, a first sealing rubber 51 is vulcanized on the outer surface of the first flow channel plate 6, and a second sealing rubber 63 is vulcanized on the substrate 53. The first sealing rubber 51 and the second sealing rubber 63 form a quadrilateral structure, and the controlled tooth 52 is located inside the quadrilateral structure. The first sealing rubber 51 and the second sealing rubber 63 are used to prevent liquid leakage.

[0094] Furthermore, the first flow channel plate 6 and the second flow channel plate 8 are configured with the same structure.

[0095] Furthermore, there are two first flow guiding structures 62, which are spaced apart along the width direction of the first flow channel plate 6. There are also two second flow guiding structures 81, which are spaced apart along the width direction of the second flow channel plate 8. The two first flow guiding structures 62 are respectively arranged corresponding to the two second flow guiding structures 81.

[0096] Furthermore, the hydraulic bushing also includes an inner tube 4 located inside the main spring 2, and two buffer rubbers 7. The two buffer rubbers 7 are vulcanized on the inner walls of the first flow channel plate 6 and the second flow channel plate 8, respectively. One buffer rubber 7 is located between the inner tube 4 and the first flow channel plate 6, and the other buffer rubber 7 is located between the inner tube 4 and the second flow channel plate 8. To maintain the integrity of the first flow channel plate 6 or the second flow channel plate 8 and improve the strength of the flow channel plate, the buffer rubbers 7 are bonded to the inner wall of the flow channel plate through a vulcanization process. To reduce friction between the buffer rubber 7 and the inner tube 4, thereby reducing harmful abnormal noise, grease is applied between the buffer rubber 7 and the inner tube 4. The hydraulic bushing can be installed on the front lower control arm or the rear trailing arm, or at other locations on the vehicle where hydraulic bushings are required.

[0097] Furthermore, a first gap is maintained between the buffer rubber 7 and the first flow channel plate 6, and a second gap is maintained between the buffer rubber 7 and the first flow channel plate 6. For example... Figure 11 As shown, the vulcanized surface 100 is the vulcanization process surface between the buffer rubber 7 and the inner wall of the flow channel plate. Gaps 101 are left between the two sides of the buffer rubber 7 and part of the inner wall of the flow channel plate.

[0098] Optionally, specific examples in this embodiment can refer to the examples described in the above embodiments and optional implementations, and will not be repeated here.

[0099] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0100] In the above embodiments of the present invention, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions of other embodiments.

[0101] In the several embodiments provided in this application, it should be understood that the disclosed technical content can be implemented in other ways. The device embodiments described above are merely illustrative; for example, the division of units can be a logical functional division, and in actual implementation, there may be other division methods. For instance, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the displayed or discussed mutual coupling, direct coupling, or communication connection may be through some interfaces; the indirect coupling or communication connection between units or modules may be electrical or other forms.

[0102] The units described as separate components may or may not be physically separate. 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 units. Some or all of the units can be selected to achieve the purpose of this embodiment according to actual needs.

[0103] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or as a software functional unit.

[0104] If the integrated unit is implemented as 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 technical solution of the present invention, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) to execute all or part of the steps of the methods described in the various embodiments of the present invention. The aforementioned storage medium includes various media capable of storing program code, such as USB flash drives, read-only memory (ROM), random access memory (RAM), portable hard drives, magnetic disks, or optical disks.

[0105] The above description is only a preferred embodiment of the present invention. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A control method for a hydraulic bushing, characterized in that, The hydraulic bushing has a flow regulating valve, which is adjustable to adjust the cross-sectional area of ​​the flow channel of the hydraulic bushing. The flow regulating valve is movably disposed within the flow channel and includes: Acquire vehicle control mode information and vehicle condition information, wherein the vehicle control mode information includes at least one of the following: sport mode and comfort mode, and the vehicle condition information includes at least one of the following: acceleration, speed, road excitation signal, vehicle warning information, and steering signal; Based on the vehicle control mode information and the vehicle condition information, a control instruction set is generated. The control instruction set is used to control and adjust the displacement of the flow regulating valve in the flow channel. Based on the vehicle control mode information and the vehicle condition information, a control command set is generated, including: In response to the target vehicle's control mode being Sport mode, one of the first target control command and the second target control command in the control command set is generated based on the vehicle condition information. The first target control command is used to control the flow regulating valve to move a first preset distance within the flow channel so that the flow regulating valve completely closes the flow channel. The second target control command is used to control the flow regulating valve to move a second preset distance within the flow channel so that the flow regulating valve partially opens the flow channel. The hydraulic bushings are in two sets, with each set positioned on one side of the suspension axis of the target vehicle. A control command set is generated based on the vehicle control mode information and the vehicle condition information. The system also includes: In response to the target vehicle's control mode being comfort mode, one of the first target control command, the second target control command, and the third target control command in the control command set is generated based on the vehicle condition information. The third target control command is used to control the hydraulic bushing on one side to fully open the flow channel, and the third target control command is used to control the hydraulic bushing on the other side to fully close the flow channel.

2. The method according to claim 1, characterized in that, Based on the vehicle condition information, one of the first target control command and the second target control command in the control command set is generated, including: Determine whether the speed of the target vehicle is within a preset speed range; If so, generate the first target control command.

3. The method according to claim 1, characterized in that, Based on the vehicle condition information, one of the first target control command and the second target control command in the control command set is generated, and the method further includes: Determine whether the road surface excitation signal is greater than a preset excitation value; If so, generate the second target control command.

4. The method according to claim 1, characterized in that, Based on the vehicle condition information, one of the first target control command, the second target control command, and the third target control command in the control command set is generated, including: Based on the vehicle warning information, determine whether the target vehicle will be hit from one side. When it is determined that the target vehicle will be subjected to a unilateral impact, the third target control command is generated.

5. The method according to claim 1, characterized in that, Based on the vehicle condition information, one of the first target control command, the second target control command, and the third target control command in the control command set is generated, including: In response to the acceleration being greater than a preset maximum value or the acceleration being greater than a preset minimum value, the first target control command is generated.

6. The method according to claim 1, characterized in that, Based on the vehicle condition information, one of the first target control command, the second target control command, and the third target control command in the control command set is generated, including: Determine whether the target vehicle will turn based on the turn signal; When it is determined that the target vehicle will turn, the third target control command is generated.

7. The method according to claim 1, characterized in that, Generating one of the first target control command, the second target control command, and the third target control command in the control command set based on the vehicle condition information, further includes: Determine whether the speed of the target vehicle is within a preset speed range; If so, generate the second target control command.

8. A vehicle comprising a memory and a processor, characterized in that, The memory stores a computer program, and the processor is configured to run the computer program to perform the method as described in any one of claims 1 to 7.

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