Vehicle stabilization system for tricycle

Abstract

The utility model belongs to the technical field of vehicles, and particularly relates to a vehicle stabilizing system for a tricycle, which comprises an electronic control unit and a hydraulic control unit, the electronic control unit is fixedly connected to the outer side wall of the hydraulic control unit through screws, and the electronic control unit is electrically connected with a brake master cylinder. A liquid outlet port of the brake master cylinder is communicated with a liquid inlet port of the hydraulic control unit, a liquid outlet port of the hydraulic control unit is communicated with three hydraulic brake actuators, the three hydraulic brake actuators are used for braking two front wheels and a rear wheel respectively, the electronic control unit is electrically connected with a driving unit, and the driving unit is electrically connected with the rear wheel. When the tricycle is unstable, the hydraulic control unit and the electronic control unit are started to control the switching state of the hydraulic control unit and control the driving system to work, front wheels of the tricycle are controlled, a driver is assisted in steering, and safety and controllability of the tricycle are improved.

Description

Technical Field

[0001] The utility model belongs to the technical field of vehicles, and in particular relates to a vehicle stabilizing system for a tricycle. Background Art

[0002] Due to the continuous increase in urbanization and logistics needs, as well as drivers' continuous demand for vehicle safety and stability, three-wheeled vehicles have begun to enter the public eye and currently have a certain market.

[0003] However, due to design limitations, current three-wheeled vehicles travel at a slow speed, and because three-wheeled vehicles only have three wheels, they have poor stability compared to four-wheeled vehicles. When changing lanes quickly, instability may occur. If the operation is improper, it may cause the vehicle body to tilt, increase the risk of rollover, and have poor handling performance. Therefore, a stability system for three-wheeled vehicles is needed to improve driving performance. Utility Model Content

[0004] The purpose of the utility model is to provide a vehicle stabilizing system for a tricycle to solve the above problems.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] A vehicle stabilization system for a three-wheeled vehicle comprises an electronic control unit and a hydraulic control unit, wherein the electronic control unit is fixedly connected to the outer side wall of the hydraulic control unit by screws, the electronic control unit is electrically connected to a brake master cylinder, the fluid outlet port of the brake master cylinder is communicated with the fluid inlet port of the hydraulic control unit, the fluid outlet port of the hydraulic control unit is communicated with three hydraulic brake actuators, the three hydraulic brake actuators are respectively used to brake two front wheels and one rear wheel, the electronic control unit is electrically connected to a drive unit, the drive unit is electrically connected to the rear wheel, and a sensor unit is arranged on the three-wheeled vehicle, and the sensor unit is electrically connected to the electronic control unit.

[0007] Preferably, the hydraulic control unit includes a front wheel control unit and a rear wheel control unit, the fluid inlet ports of the front wheel control unit and the rear wheel control unit are both connected to the fluid outlet ports of the brake master cylinder, the fluid outlet port of the front wheel control unit is connected to two of the hydraulic brake actuators, and the fluid outlet port of the rear wheel control unit is connected to the other hydraulic brake actuator.

[0008] Preferably, the front wheel control unit includes a reversing valve and a high-pressure valve connected to the fluid outlet port of the brake master cylinder, the reversing valve and the high-pressure valve are connected in parallel, the fluid outlet port of the reversing valve is connected to the fluid inlet ports of two first pressure-boosting valves, the two first pressure-boosting valves are connected in parallel, the fluid outlet ports of the two first pressure-boosting valves are respectively connected to the two hydraulic brake actuators, the fluid outlet port of the first pressure-reducing valve is connected to the fluid inlet port of the first pressure-reducing valve, the fluid outlet ports of the two first pressure-reducing valves are connected to the first self-priming pump, a one-way valve is arranged between the two first pressure-reducing valves and the first self-priming pump, and the first self-priming pump is connected to the high-pressure valve.

[0009] Preferably, the rear wheel control unit includes a second pressure-boosting valve connected to the fluid outlet port of the brake master cylinder, the fluid outlet port of the second pressure-boosting valve is connected to the hydraulic brake actuator, the fluid outlet port of the second pressure-reducing valve is connected to the fluid inlet port of a second pressure-reducing valve, the fluid outlet port of the second pressure-reducing valve is connected to a second self-priming pump, and the second self-priming pump is connected to the brake master cylinder.

[0010] Preferably, the sensor unit includes a wheel speed sensor, a steering angle sensor, a yaw angular velocity sensor and an acceleration sensor arranged on the three-wheeled vehicle, and the wheel speed sensor, steering angle sensor, yaw angular velocity sensor and acceleration sensor are all electrically connected to the electronic control unit.

[0011] Preferably, when the reversing valve is opened, the high-pressure valve is closed, and the liquid outlet port of the reversing valve is connected to the liquid inlet port of the first boosting valve; when the reversing valve is closed, the high-pressure valve is connected to the first self-priming pump.

[0012] Preferably, the driving unit comprises a motor, the motor is electrically connected to the brake master cylinder, and an output end of the motor is drivingly connected to the rear wheel.

[0013] Compared with the prior art, the utility model has the following advantages and technical effects:

[0014] During the driving process of the three-wheeled vehicle, the sensor unit continuously collects real-time vehicle signals and sends the signals to the electronic control unit. The electronic control unit determines the current state of the vehicle through calculation. When the driver brakes or turns, the electronic control unit determines whether the vehicle enters an unstable state based on the signal of the sensor unit. If the vehicle is unstable, the hydraulic control unit is started to control the hydraulic control unit. At this time, the electronic control unit determines the cause of the vehicle instability, and then controls the conversion state of the hydraulic control unit and controls the operation of the drive system, thereby controlling the front wheels of the three-wheeled vehicle, thereby assisting the driver in steering and improving the safety and controllability of the vehicle. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor:

[0016] Figure 1 It is the overall piping diagram of the utility model;

[0017] Figure 2 This is the piping diagram of the hydraulic control unit;

[0018] Figure 3 It is the fluid inlet port of the hydraulic control unit;

[0019] Figure 4 It is the fluid outlet port of the hydraulic control unit;

[0020] Figure 5 It is the work flow chart of the utility model.

[0021] Among them, 1. Electronic control unit; 2. Brake master cylinder; 3. Hydraulic control unit; 4. Hydraulic brake actuator; 5. High-pressure valve; 6. First self-priming pump; 7. Reversing valve; 8. First boost valve; 9. First pressure reducing valve; 10. Wheel speed sensor; 11. Steering angle sensor; 12. Yaw angular velocity sensor; 13. Acceleration sensor; 14. Rear wheel; 15. Front wheel; 16. Second boost valve; 17. Second pressure reducing valve; 18. Second self-priming pump; 19. Motor. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0023] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0024] Reference Figures 1 to 5As shown, the utility model provides a vehicle stabilization system for a three-wheeled vehicle, including an electronic control unit 1 and a hydraulic control unit 3. The electronic control unit 1 is fixedly connected to the outer side wall of the hydraulic control unit 3 by screws. The electronic control unit 1 is electrically connected to a brake master cylinder 2. The fluid outlet port of the brake master cylinder 2 is connected to the fluid inlet port of the hydraulic control unit 3. The fluid outlet port of the hydraulic control unit 3 is connected to three hydraulic brake actuators 4. The three hydraulic brake actuators 4 are respectively used to brake two front wheels 15 and one rear wheel 14. The electronic control unit 1 is electrically connected to a drive unit, and the drive unit is electrically connected to the rear wheel 14. A sensor unit is provided on the three-wheeled vehicle, and the sensor unit is electrically connected to the electronic control unit 1.

[0025] During the driving process of the three-wheeled vehicle, the real-time signal of the vehicle is continuously collected through the sensor unit and the signal is sent to the electronic control unit 1. The electronic control unit 1 determines the current state of the vehicle through calculation. When the driver brakes or turns, the electronic control unit 1 determines whether the vehicle enters an unstable state based on the signal of the sensor unit. If the vehicle is unstable, the hydraulic control unit 3 is started and controlled. At this time, the electronic control unit 1 determines the cause of the vehicle instability, and then controls the conversion state of the hydraulic control unit 3 and controls the operation of the drive system, thereby controlling the front wheels of the three-wheeled vehicle, thereby assisting the driver in steering and improving the safety and controllability of the vehicle.

[0026] The hydraulic control unit 3 includes three interfaces connected to the hydraulic brake actuator 4, namely the front left wheel interface (FL), the front right wheel interface (FR) and the rear wheel interface (R), as well as two master cylinder end interfaces connected to the brake master cylinder 2.

[0027] According to a further optimization scheme, the hydraulic control unit 3 includes a front wheel control unit and a rear wheel control unit. The fluid inlet ports of the front wheel control unit and the rear wheel control unit are both connected to the fluid outlet ports of the brake master cylinder 2. The fluid outlet port of the front wheel control unit is connected to two of the hydraulic brake actuators 4, and the fluid outlet port of the rear wheel control unit is connected to the other hydraulic brake actuator 4.

[0028] To further optimize the solution, the front wheel control unit includes a reversing valve 7 and a high-pressure valve 5 connected to the fluid outlet port of the brake master cylinder 2, the reversing valve 7 and the high-pressure valve 5 are connected in parallel, the fluid outlet port of the reversing valve 7 is connected to the fluid inlet port of two first boosting valves 8, the two first boosting valves 8 are connected in parallel, the fluid outlet ports of the two first boosting valves 8 are respectively connected to two hydraulic brake actuators 4, the fluid outlet port of the first boosting valve 8 is connected to the fluid inlet port of the first pressure reducing valve 9, the fluid outlet ports of the two first pressure reducing valves 9 are connected to the first self-priming pump 6, a one-way valve is arranged between the two first pressure reducing valves 9 and the first self-priming pump 6, and the first self-priming pump 6 is connected to the high-pressure valve 5.

[0029] A further optimized solution is that the rear wheel control unit includes a second boosting valve 16 connected to the fluid outlet port of the brake master cylinder 2, the fluid outlet port of the second boosting valve 16 is connected to the hydraulic brake actuator 4, the fluid outlet port of the second boosting valve 16 is connected to the fluid inlet port of the second pressure reducing valve 17, the fluid outlet port of the second pressure reducing valve 17 is connected to the second self-priming pump 18, and the second self-priming pump 18 is connected to the brake master cylinder 2.

[0030] According to a further optimization scheme, the sensor unit includes a wheel speed sensor 10, a steering angle sensor 11, a yaw angular velocity sensor 12 and an acceleration sensor 13 which are arranged on the three-wheel vehicle, and the wheel speed sensor 10, the steering angle sensor 11, the yaw angular velocity sensor 12 and the acceleration sensor 13 are all electrically connected to the electronic control unit 1.

[0031] The wheel speed sensor 10, the steering angle sensor 11, the yaw rate sensor 12 and the acceleration sensor 13 continuously collect real-time vehicle signals and send the signals to the electronic control unit 1, which determines the current state of the vehicle through calculation.

[0032] To further optimize the solution, when the reversing valve 7 is opened, the high-pressure valve 5 is closed, and the liquid outlet port of the reversing valve 7 is connected to the liquid inlet port of the first boosting valve 8; when the reversing valve 7 is closed, the high-pressure valve 5 is connected to the first self-priming pump 6.

[0033] According to a further optimized solution, the drive unit includes a motor 19 , the motor 19 is electrically connected to the brake master cylinder 2 , and the output end of the motor 19 is transmission-connected to the rear wheel 14 .

[0034] The working process of the utility model is as follows:

[0035] Under normal circumstances, the high-pressure valve 5 remains closed and the reversing valve 7 remains open. When the driver steps on the brake for active control, the high-pressure valve 5 and the reversing valve 7 have no effect on the brake line, thus ensuring the vehicle's braking response to the driver. The hydraulic braking force reaches the front wheel 15 through the first boost valve 8, which is equivalent to a normal braking system.

[0036] When the driver brakes or turns, the electronic control unit 1 determines whether the vehicle enters an unstable state based on the sensor signal. If the vehicle is unstable, the electronic control unit 1 determines the cause of the vehicle instability, and then the reversing valve 7 is closed to cut off the connection between the brake master cylinder 2 and the oil circuit of the front wheel 15; the high-pressure valve 5 is opened to establish a channel between the brake master cylinder 2 and the first self-priming pump 6.

[0037] According to the result calculated by the electronic control unit 1, it is determined which front wheel 15 needs to be braked, and then the first boosting valve 8 of the front wheel 15 that needs to be braked is opened, the first reducing valve 9 is closed, and the first boosting valve 8 and the first reducing valve 9 of the non-braking wheel are closed. In this way, the brake fluid can enter the first self-priming pump 6 through the high-pressure valve 5. The first self-priming pump 6 can actively increase the brake fluid pressure when it works, and the pressure value can be detected by the pressure sensor. The first self-priming pump 6 pumps the brake fluid through the opened first boosting valve 8 to the hydraulic brake actuator 4 of the front wheel 15 that needs to be braked, brakes the front wheel 15, and realizes autonomous control of the vehicle.

[0038] In the description of the present invention, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and "outside" etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0039] The embodiments described above are only descriptions of the preferred methods of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should fall within the protection scope determined by the claims of the present invention.

Claims

1. A vehicle stabilization system for a three-wheeled vehicle, characterized in that: The invention comprises an electronic control unit (1) and a hydraulic control unit (3), wherein the electronic control unit (1) is fixedly connected to the outer wall of the hydraulic control unit (3) by screws, the electronic control unit (1) is electrically connected to a brake master cylinder (2), the fluid outlet port of the brake master cylinder (2) is connected to the fluid inlet port of the hydraulic control unit (3), the fluid outlet port of the hydraulic control unit (3) is connected to three hydraulic brake actuators (4), the three hydraulic brake actuators (4) are respectively used to brake two front wheels (15) and one rear wheel (14), the electronic control unit (1) is electrically connected to a drive unit, the drive unit is electrically connected to the rear wheel (14), and a sensor unit is arranged on the tricycle vehicle, the sensor unit is electrically connected to the electronic control unit (1).

2. The vehicle stabilization system for a three-wheeled vehicle according to claim 1, characterized in that: The hydraulic control unit (3) comprises a front wheel control unit and a rear wheel control unit, wherein the fluid inlet ports of the front wheel control unit and the rear wheel control unit are both connected to the fluid outlet port of the brake master cylinder (2), the fluid outlet port of the front wheel control unit is connected to two of the hydraulic brake actuators (4), and the fluid outlet port of the rear wheel control unit is connected to the other hydraulic brake actuator (4).

3. The vehicle stabilization system for a three-wheeled vehicle according to claim 2, characterized in that: The front wheel control unit comprises a reversing valve (7) and a high-pressure valve (5) which are connected to the fluid outlet port of the brake master cylinder (2); the reversing valve (7) and the high-pressure valve (5) are connected in parallel; the fluid outlet port of the reversing valve (7) is connected to the fluid inlet ports of two first pressure-boosting valves (8); the two first pressure-boosting valves (8) are connected in parallel; the fluid outlet ports of the two first pressure-boosting valves (8) are respectively connected to the two hydraulic brake actuators (4); the fluid outlet port of the first pressure-boosting valve (8) is connected to the fluid inlet port of the first pressure-reducing valve (9); the fluid outlet ports of the two first pressure-reducing valves (9) are connected to the first self-priming pump (6); a one-way valve is provided between the two first pressure-reducing valves (9) and the first self-priming pump (6); the first self-priming pump (6) is connected to the high-pressure valve (5).

4. The vehicle stabilization system for a three-wheeled vehicle according to claim 2, characterized in that: The rear wheel control unit includes a second pressure-boosting valve (16) connected to the fluid outlet port of the brake master cylinder (2), the fluid outlet port of the second pressure-boosting valve (16) is connected to the hydraulic brake actuator (4), the fluid outlet port of the second pressure-boosting valve (16) is connected to the fluid inlet port of a second pressure-reducing valve (17), the fluid outlet port of the second pressure-reducing valve (17) is connected to a second self-priming pump (18), and the second self-priming pump (18) is connected to the brake master cylinder (2).

5. The vehicle stabilization system for a three-wheeled vehicle according to claim 1, characterized in that: The sensor unit comprises a wheel speed sensor (10), a steering angle sensor (11), a yaw angular velocity sensor (12) and an acceleration sensor (13) arranged on the tricycle vehicle; the wheel speed sensor (10), the steering angle sensor (11), the yaw angular velocity sensor (12) and the acceleration sensor (13) are all electrically connected to the electronic control unit (1).

6. The vehicle stabilization system for a three-wheeled vehicle according to claim 3, characterized in that: When the reversing valve (7) is opened, the high-pressure valve (5) is closed, and the liquid outlet port of the reversing valve (7) is connected to the liquid inlet port of the first boosting valve (8); when the reversing valve (7) is closed, the high-pressure valve (5) is connected to the first self-priming pump (6).

7. The vehicle stabilization system for a three-wheeled vehicle according to claim 1, characterized in that: The drive unit comprises a motor (19), the motor (19) is electrically connected to the brake master cylinder (2), and the output end of the motor (19) is drivingly connected to the rear wheel (14).

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