Brake pedal feel adjustment device and method for automatically recognizing driving intention, and automobile

Abstract

This invention discloses an automatic brake pedal feel adjustment device and method for recognizing driving intentions, relating to the field of automotive braking technology. It includes: an adjustment mechanism comprising a controller and an adjustment cylinder, with a piston and a spring movably disposed within the cylinder, the controller being connected to the piston; an oil inlet and an oil outlet on the adjustment cylinder; and a brake fluid pipe channel and a reservoir channel at the bottom of the cylinder, both communicating with the oil outlet. The two channels are respectively equipped with a first elastic plug and a second elastic plug, the elastic force of the first elastic plug being less than that of the second elastic plug; a pedal angle sensor disposed on the brake pedal and connected to the controller; and a three-way connector with three openings communicating with the reservoir, the oil inlet, and the reservoir channel. This adjustment device addresses the problem of low-drag calipers with increased clearance between the friction pads and brake discs by quickly eliminating the initial clearance through targeted calibration, thus accelerating pedal response.

Description

Technical Field

[0001] This invention belongs to the field of automotive braking technology, and more specifically, relates to a brake pedal feel adjustment device and method for automatically recognizing driving intentions, and an automobile. Background Technology

[0002] The feel of a car's brake pedal is related to the user's driving experience, comfort, and safety. There are many factors that can be used to evaluate the quality of the brake pedal feel, among which the length of the initial brake pedal travel (also known as the initial free travel) has a significant impact on the driver.

[0003] The initial pedal travel is constrained by the structure of braking system components, such as the free play of the vacuum booster and master cylinder, and the clearance between the friction pads and the brake disc, preventing a shorter initial travel. Furthermore, a key measure in promoting low-drag calipers is to increase the clearance between the friction pads and the brake disc, inevitably leading to an increase in brake fluid demand, directly reflected in a longer brake pedal travel. When the driver depresses the brake pedal, the initial travel of the braking system needs to be eliminated before the brake fluid can push the friction pads to press against the brake disc and generate braking force. The inherently larger travel makes it difficult to quickly build braking pressure in the initial driving phase, sometimes even resulting in a feeling of not pressing the pedal at all, severely impacting braking safety and comfort. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by providing a brake pedal feel adjustment device and method for automatically recognizing driving intentions, and for automobiles. This adjustment device is designed for low-drag calipers with increased gap between the friction pads and brake discs. It can quickly eliminate the initial gap and accelerate the pedal response speed through targeted calibration, thus solving the existing problems.

[0005] To achieve the above objectives, the present invention provides a brake pedal feel adjustment device for automatically recognizing driving intentions, comprising:

[0006] An adjustment mechanism is provided, comprising a controller and an adjustment cylinder. A piston and a solenoid spring are movably disposed within the adjustment cylinder. The controller can control the piston to move toward the solenoid spring. An oil inlet and an oil outlet are respectively provided on the side wall and bottom wall of the adjustment cylinder. A brake oil pipe channel and a reservoir channel communicating with the oil outlet are provided at the bottom of the adjustment cylinder. A first elastic plug is provided in the brake oil pipe channel, and a second elastic plug is provided in the reservoir channel. The spring force of the first elastic plug is less than the spring force of the second elastic plug.

[0007] A pedal angle sensor is installed on the brake pedal and is connected to the controller. When the brake pedal rotates, the pedal angle sensor sends a signal to the controller and controls the piston to move towards the coil spring to block the oil inlet.

[0008] The three-way connector has its first and second ends connected to the liquid reservoir and the oil inlet, respectively, and its third end connected to the liquid reservoir channel.

[0009] Optionally, the regulating cylinder body is further provided with a brake oil pipe flow channel, a brake oil pipe inlet channel, and a brake oil pipe outlet channel. One end of the brake oil pipe inlet channel is located at one end of the first elastic plug, and one end of the brake oil pipe outlet channel is located at the other end of the first elastic plug. The brake oil pipe flow channel connects the brake oil pipe inlet channel and the brake oil pipe outlet channel.

[0010] Optionally, the first elastic plug includes a first valve core and a first spring. A first sealing ring is provided between one end of the first valve core and the brake oil pipe channel. The first spring is connected to the other end of the first valve core. The brake oil pipe inlet channel and the brake oil pipe outlet channel are located at both ends of the first valve core.

[0011] Optionally, the second elastic plug includes a second valve core and a second spring. A second sealing ring is provided between one end of the second valve core and the liquid reservoir channel. An oil groove is provided inside the second valve core. The oil groove connects the middle outer peripheral space of the second valve core with the external space of the other end of the second valve core. The second spring is connected to the other end of the second valve core.

[0012] Optionally, the adjustment mechanism further includes a control motor connected to the controller. The control motor is arranged parallel to one side of the adjustment cylinder. The piston is a rack piston, and the rack portion of the rack piston meshes with a gear. The control motor is connected to the gear via a transmission belt.

[0013] Optionally, a plurality of sealing rings are fitted in the middle of the piston portion of the rack piston, and the sealing rings cooperate with the oil inlet.

[0014] Optionally, an end cap is provided at the opening of the adjusting cylinder, a through hole is provided in the middle of the end cap, and multiple mounting holes are provided in the circumferential direction of the end cap, the through hole being in sliding engagement with the rack piston.

[0015] Optionally, the brake pedal is provided with a pedal pivot, which is connected to the pedal angle sensor via a shift fork.

[0016] The present invention also provides a method for adjusting the brake pedal feel by automatically recognizing driving intentions. Utilizing the aforementioned brake pedal feel adjustment device for automatically recognizing driving intentions, the method includes:

[0017] After the pedal angle sensor detects that the brake pedal is rotating, it sends a signal to the controller;

[0018] The controller drives the piston to move closer to the coil spring, switches the oil inlet to the closed mode and continues to move, increases the pressure of the brake fluid in the regulating cylinder, and opens the first elastic plug to open the brake fluid pipe passage.

[0019] The brake fluid flows in reverse within the brake fluid line passage, causing the first elastic plug to close. As the piston continues to move closer to the coil spring, the pressure of the brake fluid in the regulating cylinder continues to increase, opening the second elastic plug and thus opening the reservoir passage.

[0020] After the pedal angle sensor detects that the brake pedal has reset, the controller drives the piston to move away from the coil spring, causing the second elastic plug to close until the oil inlet switches to the open mode.

[0021] The present invention also provides an automobile, including the above-described brake pedal feel adjustment device for automatically recognizing driving intentions.

[0022] This invention provides a brake pedal feel adjustment device and method for automatically recognizing driving intentions, and an automobile, the advantages of which are:

[0023] 1. This adjustment device automatically identifies the driver's braking intention by collecting the rotation angle of the brake pedal angle sensor, and controls the movement of the adjustment mechanism in a timely manner by controlling the motor to realize the movement of the rack piston, ensuring the correct flow of oil between the adjustment mechanism and the reservoir;

[0024] 2. The adjustment device achieves forward and reverse rotation of the pedal angle sensor through the linkage between the shift fork and the pedal shaft, thereby outputting a signal consistent with the pedal being pressed down and returned, which is used to control the pressing and retraction of the rack piston.

[0025] 3. This adjustment device achieves the switching between two oil circuits, the brake oil pipe channel and the reservoir channel, by using an elastic plug that opens under different pressures. When the brake oil pipe channel is open, it can quickly eliminate the gap between the brake friction pads and the brake disc, thereby reducing the initial free travel of the pedal.

[0026] 4. The adjusting device ensures that the first valve core and the second valve core open and close in the correct sequence by adjusting the spring force of the first spring and the second spring;

[0027] 5. This adjustment device, through data calibration by the controller, quickly eliminates the gap between the brake pads and the brake disc, meets the low drag caliper requirements for larger disc-pad gaps, reduces caliper drag torque, and reduces energy consumption;

[0028] 6. The adjustment device, through data calibration of the controller, meets the requirements of the non-ventilated pedal feel.

[0029] Other features and advantages of the present invention will be described in detail in the following detailed description section. Attached Figure Description

[0030] The above and other objects, features and advantages of the present invention will become more apparent from the more detailed description of exemplary embodiments of the invention in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments of the invention.

[0031] Figure 1 A connection diagram of a brake pedal feel adjustment device for automatically recognizing driving intentions according to an embodiment of the present invention is shown.

[0032] Figure 2 A schematic diagram of a brake pedal feel adjustment device for automatically recognizing driving intentions according to an embodiment of the present invention is shown.

[0033] Figure 3 A schematic diagram of the structure of the adjusting cylinder according to an embodiment of the present invention is shown.

[0034] Figure 4 A schematic diagram of the structure of an end cap according to an embodiment of the present invention is shown.

[0035] Figure 5 A schematic diagram of the structure of a first valve core according to an embodiment of the present invention is shown.

[0036] Figure 6 A schematic diagram of the structure of a second valve core according to an embodiment of the present invention is shown.

[0037] Figure 7 A schematic diagram of a piston according to an embodiment of the present invention is shown.

[0038] Figure 8 A schematic diagram of a valve seat according to an embodiment of the present invention is shown.

[0039] Figure 9 A schematic diagram of the oil circuit is shown for an automatic brake pedal feel adjustment device for recognizing driving intentions according to an embodiment of the present invention when it is in the initial gap adjustment state.

[0040] Figure 10A schematic diagram of the oil circuit is shown for an automatic brake pedal feel adjustment device for recognizing driving intentions according to an embodiment of the present invention when the vehicle is in a braking state.

[0041] Explanation of reference numerals in the attached figures:

[0042] 1. Adjustment mechanism; 2. Controller; 3. Adjustment cylinder; 4. Piston; 5. Spring; 6. Oil inlet; 7. Brake oil pipe channel; 8. Reservoir channel; 9. Pedal angle sensor; 10. Brake pedal; 11. T-connector; 12. Reservoir; 13. Brake oil pipe flow channel; 14. Brake oil pipe inlet channel; 15. Brake oil pipe outlet channel; 16. First valve core; 17. First spring; 18. First sealing ring; 19. Second valve core; 20. Second spring; 21. Second sealing ring; 22. Oil groove; 23. Control motor; 24. Gear; 25. Drive belt; 26. Sealing ring; 27. End cap; 28. Through hole; 29. ​​Mounting hole; 30. Five-channel body; 31. Pedal shaft; 32. Shift fork; 33. Vacuum booster; 34. Master cylinder; 35. Master cylinder oil pipe; 36. Brake hydraulic module. Detailed Implementation

[0043] Preferred embodiments of the invention will now be described in more detail. While preferred embodiments of the invention are described below, it should be understood that the invention can be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the invention will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art.

[0044] This invention provides a brake pedal feel adjustment device for automatically recognizing driving intentions, comprising:

[0045] The regulating mechanism includes a controller and a regulating cylinder. A piston and a solenoid spring are movably arranged inside the regulating cylinder. The controller can control the piston to move in the direction of the solenoid spring. An oil inlet and an oil outlet are respectively provided on the side wall and bottom wall of the regulating cylinder. A brake oil pipe channel and a reservoir channel connected to the oil outlet are provided at the bottom of the regulating cylinder. A first elastic plug is provided in the brake oil pipe channel, and a second elastic plug is provided in the reservoir channel. The spring force value of the first elastic plug is less than the spring force value of the second elastic plug.

[0046] The pedal angle sensor is installed on the brake pedal and is connected to the controller. When the brake pedal rotates, the pedal angle sensor sends a signal to the controller and controls the piston to move towards the coil spring, thereby blocking the oil inlet.

[0047] The three-way connector has its first and second ends connected to the reservoir and oil inlet, respectively, and its third end connected to the reservoir channel.

[0048] Specifically, the brake pedal feel adjustment device includes a controller and an adjustment cylinder. The controller controls the piston's movement within the adjustment cylinder based on the brake pedal's rotation angle. When the piston moves towards the spring and blocks the inlet, the reservoir stops releasing brake fluid into the adjustment cylinder. As the piston continues to move towards the spring, both elastic plugs experience equal pressure. Due to the smaller spring force of the first elastic plug, the brake fluid passage is opened first, allowing brake fluid to be pre-emptively delivered to the brakes of all four wheels, pushing the caliper rack piston to eliminate the initial gap between the friction pads and the caliper. As the brake pedal's rotation angle increases, the master cylinder, controlled by the vacuum booster, delivers brake fluid to the brakes of all four wheels, filling them completely. This allows the caliper rack piston to continue applying pressure to the friction pads, clamping the brake disc and achieving vehicle deceleration or stopping. Simultaneously, the brake fluid in the brake fluid passage experiences a reverse force, causing the brake fluid in the passage to exert pressure on the first elastic plug. When the piston applies force to the first elastic plug, it re-blocks the brake fluid line passage, preventing the brake fluid in the regulating cylinder from draining and releasing pressure. As the piston continues to move towards the spring, the brake fluid pressure in the regulating cylinder gradually reaches the spring force of the second elastic plug, opening it and allowing the reservoir passage to open. This allows the brake fluid in the regulating cylinder to return to the reservoir, relieving the pressure inside the regulating cylinder and ensuring the brake fluid level remains at the correct position, preventing low brake fluid warnings. Once the inlet is open, brake fluid is discharged back into the regulating cylinder, maintaining the set pressure for adjustments to the initial clearance between the brake pads and calipers. When the brake pedal is released, the piston moves away from the spring, reducing the brake fluid pressure in the regulating cylinder. This causes the second elastic plug to close the reservoir passage. Once the piston opens the inlet, brake fluid re-enters the regulating cylinder, ensuring a proper brake fluid level is maintained.

[0049] The controller calibrates low-drag braking systems with different fluid requirements and larger gaps between the friction pads and brake discs. By controlling the response time of the adjustment mechanism through the signal output by the controller, the disc gap is quickly eliminated. The control of the initial pedal travel and pedal feedback force can achieve different pedal feel styles, such as comfort and sport. It can satisfy the comfort pedal style with a longer initial pedal travel, smooth braking response, and smaller initial pedal force, as well as the sport pedal style with a shorter initial pedal travel, faster braking response, and larger initial pedal force.

[0050] Optionally, the regulating cylinder body is also provided with a brake oil pipe flow channel, a brake oil pipe inlet channel and a brake oil pipe outlet channel. One end of the brake oil pipe inlet channel is located at one end of the first elastic plug, and one end of the brake oil pipe outlet channel is located at the other end of the first elastic plug. The brake oil pipe flow channel connects the brake oil pipe inlet channel and the brake oil pipe outlet channel.

[0051] Specifically, the bottom of the adjusting cylinder is also equipped with an inlet and outlet channel for the brake oil pipe. The inlet and outlet channels of the brake oil pipe are respectively located at the front and rear ends of the first elastic plug. When the brake oil pressure in the adjusting cylinder increases to the point that it can open the first elastic plug, the brake oil flows into the brake brake of each wheel after passing through the inlet channel, flow channel and outlet channel of the brake oil pipe in sequence. Before the brake fluid flowing from the master cylinder arrives, it enters the brake first, eliminating the initial gap between the friction pads and the caliper and reducing the initial braking stage.

[0052] In one embodiment, the outer ends of the brake oil pipe flow channel, brake oil pipe inlet channel, and brake oil pipe outlet channel are located on the regulating cylinder body and sealed with sealing plugs. This allows for thorough maintenance of each channel during the maintenance of the regulating cylinder body. Additionally, when it is necessary to adjust the oil pressure within the regulating cylinder body, the sealing plugs can be opened to apply pressure to the channels.

[0053] Optionally, the first elastic plug includes a first valve core and a first spring. A first sealing ring is provided between one end of the first valve core and the brake oil pipe passage. The first spring is connected to the other end of the first valve core. The brake oil pipe inlet passage and the brake oil pipe outlet passage are located at both ends of the first valve core.

[0054] Specifically, a first valve core and a first spring are installed in the brake oil pipe channel. The first spring provides elastic support for the first valve core, thereby enabling the first valve core to cooperate with the first sealing ring to block the brake oil pipe channel. When the brake oil pressure in the regulating cylinder reaches the elastic pressure of the first spring, the first valve core is pushed open, allowing the brake oil to enter the brake oil pipe inlet channel, and then bypass the first valve core to flow into the brake brakes of each wheel from the brake oil pipe outlet channel.

[0055] Optionally, the second elastic plug includes a second valve core and a second spring. A second sealing ring is provided between one end of the second valve core and the liquid reservoir channel. An oil groove is provided inside the second valve core, which connects the middle outer periphery space of the second valve core with the external space of the other end of the second valve core. The second spring is connected to the other end of the second valve core.

[0056] Specifically, a second valve core and a second spring are installed in the reservoir channel. The second spring provides elastic support for the second valve core, so that the second valve core cooperates with the second sealing ring to seal the reservoir channel. When the first valve core is closed, the brake fluid pressure in the cylinder is adjusted to reach the elastic pressure of the second spring, which opens the second valve core. The brake fluid remains on the outer periphery of the second valve core, flows into the interior of the second valve core through the oil groove, and then flows out from the other end of the second valve core, sending the brake fluid back to the reservoir.

[0057] In one embodiment, the second spring is a disc spring.

[0058] The elastic force of the first and second springs can be adjusted by their wire diameter. By adjusting the elastic force of the two springs, the normal opening and closing of the first and second valve cores can be achieved, thus determining the correct flow direction of the brake fluid.

[0059] Optionally, the adjustment mechanism also includes a control motor connected to the controller. The control motor is arranged parallel to one side of the adjustment cylinder. The piston is a rack piston, and the rack part of the rack piston meshes with a gear. The control motor is connected to the gear through a transmission belt.

[0060] Specifically, after the controller receives the signal from the pedal angle sensor, the adjustment mechanism drives the drive motor to drive the transmission belt. The transmission belt meshes with the gears, and the gear transmission enables the rack piston to move in and out of the adjustment cylinder.

[0061] Optionally, the piston portion of the rack piston is fitted with multiple sealing rings, which mate with the oil inlet.

[0062] Specifically, multiple sealing rings are installed on the rack piston, which block the oil inlet. After the sealing ring at the end of the rack piston near the coil spring reaches the oil inlet, no more brake fluid flows into the reservoir from the regulating cylinder. This ensures that the brake fluid in the regulating cylinder rises to the required pressure, thereby opening the first elastic plug.

[0063] Optionally, an end cap is provided at the opening of the adjusting cylinder, with a through hole in the middle of the end cap and multiple mounting holes in the circumferential direction of the end cap, the through hole slidingly engaging with the rack piston.

[0064] Specifically, an end cover is installed on the adjusting cylinder body. The end cover is fastened to the adjusting cylinder body by screws on the mounting hole. The rack part of the rack piston is in movable engagement with the through hole to ensure that the rack piston can move normally under the transmission of the control motor.

[0065] Optionally, the brake oil line channel is connected to the five-channel body.

[0066] Specifically, after the first valve core in the brake oil pipe channel is opened, the brake fluid flows into the five-channel body and enters the brake pump of each wheel through the five-channel body. According to the different gaps between the brake pads and brake discs of each wheel, the brake fluid is reasonably distributed.

[0067] Optionally, the brake pedal is provided with a pedal pivot, which is connected to the pedal angle sensor via a shift fork.

[0068] Specifically, when the brake pedal is pressed, the brake pedal and the pedal shaft rotate synchronously. The pedal shaft transmits the rotation angle accurately to the pedal angle sensor through the shift fork. In this way, the adjustment cylinder can accurately identify the driving intention and quickly eliminate the disc clearance.

[0069] The present invention also provides a method for adjusting the brake pedal feel by automatically recognizing driving intentions. Utilizing the aforementioned brake pedal feel adjustment device for automatically recognizing driving intentions, the method includes:

[0070] After the pedal angle sensor detects that the brake pedal is rotating, it sends a signal to the controller;

[0071] The controller drives the piston to move closer to the coil spring, switches the oil inlet to the closed mode and continues to move, increases the pressure of the brake fluid in the regulating cylinder, and opens the first elastic plug to open the brake fluid pipe passage.

[0072] The brake fluid flows in reverse within the brake fluid line passage, causing the first elastic plug to close. As the piston continues to move closer to the coil spring, the pressure of the brake fluid in the regulating cylinder continues to increase, opening the second elastic plug and thus opening the reservoir passage.

[0073] After the pedal angle sensor detects that the brake pedal has reset, the controller drives the piston to move away from the coil spring, causing the second elastic plug to close until the oil inlet switches to the open mode.

[0074] Specifically, in this brake pedal feel adjustment method, during the adjustment process, the pedal angle sensor detects that the brake pedal is depressed. The pedal angle sensor sends a signal to the controller, thereby starting the control motor to drive the transmission belt to rotate. This causes the rack piston to move towards the coil spring. When the sealing ring of the rack piston blocks the oil inlet, the pressure of the brake fluid in the adjusting cylinder begins to increase, and the brake fluid in the reservoir stops flowing into the adjusting cylinder. When the brake fluid pressure reaches the elastic force of the first spring, the first valve body is opened, and brake fluid begins to flow from the brake line to the brakes of each wheel, pushing the caliper rack piston to move and eliminate the initial gap between the friction pads and the caliper. As the brake pedal continues to be depressed, more and more brake fluid flows from the adjusting cylinder into the brake, and the master cylinder also discharges brake fluid into the brake to achieve the braking effect. As the brake fluid fills the brake caliper, the brake fluid in the brake line passage is subjected to reverse pressure, causing the first valve body to seal the brake line passage. After the first valve body returns to its original sealed state, the piston continues to move towards the coil spring as the pedal angle sensor continuously monitors the brake pedal being depressed. The pressure of the brake fluid in the regulating cylinder continues to increase. When the brake fluid pressure reaches the spring force of the second spring, the second valve body is opened, and brake fluid begins to flow from the reservoir passage into the reservoir. When the brake pedal is released, the pedal angle sensor sends a signal to the controller. At this time, the rack piston begins to move away from the coil spring, the brake fluid pressure in the regulating cylinder decreases, and the second valve body seals the reservoir passage. When the rack piston no longer seals the inlet, the brake fluid in the reservoir returns to the regulating cylinder for use in the next operation of the regulating mechanism.

[0075] The present invention also provides an automobile, including the above-described brake pedal feel adjustment device for automatically recognizing driving intentions.

[0076] Example

[0077] like Figures 1 to 10 As shown, the present invention provides a brake pedal feel adjustment device for automatically recognizing driving intentions, comprising:

[0078] Adjustment mechanism 1 includes controller 2 and adjustment cylinder 3. Piston 4 and spring 5 are movably arranged inside adjustment cylinder 3. Controller 2 can control piston 4 to move in the direction of spring 5. Oil inlet 6 and oil outlet are respectively provided on the side wall and bottom wall of adjustment cylinder 3. Brake oil pipe channel 7 and reservoir channel 8 connected to oil outlet are provided at the bottom of adjustment cylinder 3. A first elastic plug is provided in brake oil pipe channel 7 and a second elastic plug is provided in reservoir channel 8. The spring force value of the first elastic plug is less than the spring force value of the second elastic plug.

[0079] The pedal angle sensor 9 is installed on the brake pedal 10. The pedal angle sensor 9 is connected to the controller 2. When the brake pedal 10 rotates, the pedal angle sensor 9 sends a signal to the controller 2 and controls the piston 4 to move towards the spring 5, thereby blocking the oil inlet 6.

[0080] The three-way connector 11 has its first and second ends connected to the liquid reservoir 12 and the oil inlet 6, respectively, and its third end connected to the liquid reservoir channel 8.

[0081] In this embodiment, the regulating cylinder 3 is also provided with a brake oil pipe flow channel 13, a brake oil pipe inlet channel 14, and a brake oil pipe outlet channel 15. One end of the brake oil pipe inlet channel 14 is located at one end of the first elastic plug, and one end of the brake oil pipe outlet channel 15 is located at the other end of the first elastic plug. The brake oil pipe flow channel 13 connects the brake oil pipe inlet channel 14 and the brake oil pipe outlet channel 15.

[0082] In this embodiment, the first elastic plug includes a first valve core 16 and a first spring 17. A first sealing ring 18 is provided between one end of the first valve core 16 and the brake oil pipe channel 7. The first spring is connected to the other end of the first valve core 16. The brake oil pipe inlet channel 14 and the brake oil pipe outlet channel 15 are located at both ends of the first valve core 16.

[0083] In this embodiment, the second elastic plug includes a second valve core 19 and a second spring 20. A second sealing ring 21 is provided between one end of the second valve core 19 and the liquid storage channel 8. An oil groove 22 is provided inside the second valve core 19. The oil groove 22 connects the outer peripheral space of the middle part of the second valve core 19 with the outer space of the other end of the second valve core 19. The second spring 20 is connected to the other end of the second valve core 19.

[0084] In this embodiment, the adjustment mechanism 1 also includes a control motor 23 connected to the controller. The control motor 23 is arranged parallel to one side of the adjustment cylinder 3. The piston 4 is a rack piston. The rack part of the rack piston meshes with the gear 24. The control motor 23 is connected to the gear 24 through a transmission belt 25.

[0085] In this embodiment, a plurality of sealing rings 26 are fitted in the middle of the piston portion of the rack piston, and the sealing rings 26 cooperate with the oil inlet 6.

[0086] In this embodiment, an end cap 27 is provided at the opening of the adjusting cylinder 3. A through hole 28 is provided in the middle of the end cap 27. Multiple mounting holes 29 are provided in the circumferential direction of the end cap 27. The through hole 28 slides with the rack piston.

[0087] In this embodiment, the brake oil pipe channel 7 is connected to the five-channel body 30.

[0088] In this embodiment, the brake pedal 10 is provided with a pedal pivot 31, which is connected to the pedal angle sensor 9 via a shift fork 32.

[0089] The present invention also provides a method for adjusting the brake pedal feel by automatically recognizing driving intentions. Utilizing the aforementioned brake pedal feel adjustment device for automatically recognizing driving intentions, the method includes:

[0090] After the pedal angle sensor 9 detects that the brake pedal 10 is rotating, it sends a signal to the controller 2.

[0091] The controller 2 drives the piston 4 to move closer to the coil spring 5. The piston 4 switches the oil inlet 6 to the closed mode and continues to move, which increases the pressure of the brake fluid in the regulating cylinder 3 and opens the first elastic plug, thereby opening the brake fluid pipe passage 7.

[0092] The brake fluid in the brake line passage 7 flows in reverse, causing the first elastic plug to close. As the piston 4 continues to move closer to the coil spring 5, the pressure of the brake fluid in the regulating cylinder 3 continues to increase, and the second elastic plug is opened, thereby opening the reservoir passage 8.

[0093] After the pedal angle sensor 9 detects that the brake pedal 10 has been reset, the controller 2 drives the piston 4 to move away from the coil spring 5, causing the second elastic plug to close until the oil inlet 6 switches to the open mode.

[0094] The present invention also provides an automobile, including the above-described brake pedal feel adjustment device for automatically recognizing driving intentions.

[0095] In summary, the brake pedal feel adjustment device starts operating when the brake pedal 10 is depressed. The controller 2 receives a signal from the pedal angle sensor 9, and the piston 4 begins to move towards the spring 5. When the piston 4 blocks the oil inlet 6, the pressure of the brake fluid in the regulating cylinder 3 begins to increase. When the brake fluid pressure reaches the spring force value of the first spring 17, the brake fluid flows from the brake oil pipe channel 7 into the five-channel body 30, and finally into the brakes of each wheel, pushing the caliper rack piston to eliminate the initial gap between the friction pads and the caliper. As the brake pedal 10 is depressed, the braking pressure generated by the vacuum booster 33 pushing the master cylinder 34 rack piston to move is transmitted through the master cylinder oil pipe 35 to the brake hydraulic module 36, and then input to each wheel. Inside the brakes of each wheel, the piston of the caliper rack moves, causing the friction pads to press against the brake disc and generate braking force. As the braking force increases, under the action of the pressure difference, the first valve core 16 moves in the opposite direction under the force of the brake fluid in the wheel brakes, blocking the brake fluid pipe passage 7. This causes the pressure of the brake fluid in the regulating cylinder 3 to continue to increase. When the pressure of the brake fluid reaches the elastic force value of the second spring 20, the brake fluid is discharged from the reservoir passage 8 into the reservoir 12 so that when the inlet 6 is opened, the brake fluid is discharged back into the regulating cylinder 3. When the brake pedal 10 is released, as the pressure of the brake fluid in the regulating cylinder 3 decreases, the reservoir passage 8 is closed. When the piston 4 opens the inlet 6, the brake fluid in the reservoir 12 re-enters the regulating cylinder 3.

[0096] The various embodiments of the present invention have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A brake pedal feel adjustment device for automatically recognizing driving intentions, characterized in that, include: An adjustment mechanism is provided, comprising a controller and an adjustment cylinder. A piston and a solenoid spring are movably disposed within the adjustment cylinder. The controller can control the piston to move toward the solenoid spring. An oil inlet and an oil outlet are respectively provided on the side wall and bottom wall of the adjustment cylinder. A brake oil pipe channel and a reservoir channel communicating with the oil outlet are provided at the bottom of the adjustment cylinder. A first elastic plug is provided in the brake oil pipe channel, and a second elastic plug is provided in the reservoir channel. The spring force of the first elastic plug is less than the spring force of the second elastic plug. A pedal angle sensor is installed on the brake pedal and is connected to the controller. When the brake pedal rotates, the pedal angle sensor sends a signal to the controller and controls the piston to move towards the coil spring to block the oil inlet. The three-way connector has its first and second ends connected to the liquid reservoir and the oil inlet, respectively, and its third end connected to the liquid reservoir channel.

2. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 1, characterized in that, The regulating cylinder is also provided with a brake oil pipe flow channel, a brake oil pipe inlet channel, and a brake oil pipe outlet channel. One end of the brake oil pipe inlet channel is located at one end of the first elastic plug, and one end of the brake oil pipe outlet channel is located at the other end of the first elastic plug. The brake oil pipe flow channel connects the brake oil pipe inlet channel and the brake oil pipe outlet channel.

3. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 2, characterized in that, The first elastic plug includes a first valve core and a first spring. A first sealing ring is provided between one end of the first valve core and the brake oil pipe channel. The first spring is connected to the other end of the first valve core. The brake oil pipe inlet channel and the brake oil pipe outlet channel are located at both ends of the first valve core.

4. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 3, characterized in that, The second elastic plug includes a second valve core and a second spring. A second sealing ring is provided between one end of the second valve core and the liquid reservoir channel. An oil groove is provided inside the second valve core. The oil groove connects the outer peripheral space of the middle part of the second valve core with the outer space of the other end of the second valve core. The second spring is connected to the other end of the second valve core.

5. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 1, characterized in that, The adjustment mechanism also includes a control motor connected to the controller. The control motor is arranged parallel to one side of the adjustment cylinder. The piston is a rack piston, and the rack portion of the rack piston meshes with a gear. The control motor is connected to the gear via a transmission belt.

6. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 5, characterized in that, The piston portion of the rack piston is fitted with multiple sealing rings, which cooperate with the oil inlet.

7. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 5, characterized in that, An end cap is provided at the opening of the regulating cylinder. A through hole is provided in the middle of the end cap. Multiple mounting holes are provided in the circumferential direction of the end cap. The through hole slides with the rack piston.

8. The brake pedal feel adjustment device for automatically recognizing driving intentions according to claim 1, characterized in that, The brake pedal is equipped with a pedal pivot, which is connected to the pedal angle sensor via a shift fork.

9. A method for adjusting the brake pedal feel based on automatically recognizing driving intentions, utilizing the brake pedal feel adjustment device for automatically recognizing driving intentions according to any one of claims 1-8, characterized in that, The method includes: After the pedal angle sensor detects that the brake pedal is rotating, it sends a signal to the controller; The controller drives the piston to move closer to the coil spring, switches the oil inlet to the closed mode and continues to move, increases the pressure of the brake fluid in the regulating cylinder, and opens the first elastic plug to open the brake fluid pipe passage. The brake fluid flows in reverse within the brake fluid line passage, causing the first elastic plug to close. As the piston continues to move closer to the coil spring, the pressure of the brake fluid in the regulating cylinder continues to increase, opening the second elastic plug and thus opening the reservoir passage. After the pedal angle sensor detects that the brake pedal has reset, the controller drives the piston to move away from the coil spring, causing the second elastic plug to close until the oil inlet switches to the open mode.

10. A car, characterized in that, Includes the brake pedal feel adjustment device for automatically recognizing driving intentions as described in any one of claims 1-8.

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