Decoupling type electro-hydraulic control system for two-wheeled vehicle

Abstract

The utility model belongs to a vehicle control system, and particularly relates to a decoupling type electro-hydraulic control system for a two-wheeled vehicle. The hydraulic system comprises a front brake, a rear brake, a front operating mechanism, a rear operating mechanism, a first main cylinder connected with the front operating mechanism, and a second main cylinder connected with the rear operating mechanism, and is characterized by further comprising a hydraulic actuator, the hydraulic actuator comprises a first actuating unit connected with the first main cylinder and the front brake and a second actuating unit connected with the second main cylinder and the rear brake, integration and low cost are achieved, the hydraulic actuator is integrated, the structure is more compact, the control system can be conveniently arranged on a vehicle, and the control system is convenient to use. The problems that space is insufficient and cost is high due to the fact that multiple sets of anti-lock mechanisms need to be arranged in the prior art are solved.

Description

Technical Field

[0001] The utility model belongs to the vehicle control system, and particularly relates to a decoupled electro-hydraulic control system for two-wheel vehicles. Background Art

[0002] With the development of society and the improvement of people's living quality, more and more families will choose to buy one or more two-wheel vehicles for daily travel and play. However, most vehicles are only equipped with basic braking, front and rear linked braking system (CBS) or single-wheel anti-lock braking system (ABS). The above three braking methods cannot fundamentally solve the situation of wheel locking and out of control, or can only play the anti-lock effect for a single wheel. At the same time, the above products have a slow reaction when performing braking actions and poor braking effects. In case of misoperation by the driver, wheel locking will also occur. Summary of the Invention

[0003] Aiming at the problems existing in the prior art, the utility model designs a decoupled electro-hydraulic control system for two-wheel vehicles, which can act on the front brake and the rear brake, meet the braking requirements under different braking conditions, ensure the slip rate of the vehicle, and improve the safety of the vehicle.

[0004] The technical solution of the utility model is as follows:

[0005] A decoupled electro-hydraulic control system for two-wheel vehicles, which includes a front brake, a rear brake, a front operating mechanism, a rear operating mechanism, a first master cylinder connected to the front operating mechanism, a second master cylinder connected to the rear operating mechanism, and also includes a hydraulic actuator. The hydraulic actuator includes a first execution unit connecting the first master cylinder and the front brake and a second execution unit connecting the second master cylinder and the rear brake. The first execution unit and the second execution unit are connected to the same motor actuator. The first execution unit includes a first liquid inlet valve, a first pressure reducing valve, a first plunger pump and a first accumulator. The first liquid inlet valve is connected to the first master cylinder and the front brake. The first pressure reducing valve is connected between the front brake and the first accumulator. The first plunger pump is connected between the first master cylinder and the first accumulator. A first one-way valve is also provided between the first master cylinder and the first plunger pump. The first plunger pump is connected to the motor actuator. The second execution unit includes a second liquid inlet valve, a second pressure reducing valve, a second plunger pump and a second accumulator. The second liquid inlet valve is connected to the second master cylinder and the rear brake. The second pressure reducing valve is connected between the rear brake and the second accumulator. The second plunger pump is connected between the second master cylinder and the second accumulator. The second plunger pump is connected to the motor actuator. A second one-way valve is also provided between the second master cylinder and the second plunger pump.

[0006] Further, it further includes a third one-way valve and a fourth one-way valve. The third one-way valve connects the front brake and the first master cylinder, and the brake fluid can only flow from the front brake to the first master cylinder. The fourth one-way valve connects the rear brake and the second master cylinder, and the brake fluid can only flow from the rear brake to the second master cylinder.

[0007] Further, it further includes a controller and a wheel speed sensor. The wheel speed sensor is used to collect the rotational speeds of the front and rear wheels and feedback the wheel speed information to the controller. The controller is also connected to the motor actuator.

[0008] In summary, the present utility model has the following beneficial effects:

[0009] The present utility model designs a decoupled electro-hydraulic braking control system for two-wheeled vehicles.

[0010] The present utility model simultaneously realizes anti-lock braking for the front and rear wheels of two-wheeled vehicles through an electro-hydraulic control system, avoiding the situation of vehicle out of control, overcoming the problem that vehicles with only single-wheel anti-lock guide columns in the prior art are prone to out of control. At the same time, the present utility model realizes integration and low cost, integrating into a single hydraulic actuator, with a more compact structure, facilitating the layout of the control system on the vehicle, and overcoming the problems of insufficient space and high cost existing in the need to arrange multiple sets of anti-lock mechanisms in the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 is a schematic diagram of the composition of the present utility model;

[0012] In the figure, 1 is the front brake,

[0013] 2 is the rear brake,

[0014] 3 is the front operating mechanism, 4 is the rear operating mechanism,

[0015] 5 is the first master cylinder, 6 is the second master cylinder, 7 is the hydraulic actuator,

[0016] 70 is the first execution unit, 701 is the first liquid inlet valve, 702 is the first pressure reducing valve, 703 is the first plunger pump, 704 is the first accumulator, 705 is the first one-way valve,

[0017] 71 is the second execution unit, 711 is the second liquid inlet valve, 712 is the second pressure reducing valve, 713 is the second plunger pump, 714 is the second accumulator, 715 is the second one-way valve,

[0018] 7011 is the third one-way valve, 7111 is the fourth one-way valve,

[0019] 8 is the motor actuator, 9 is the controller, 10 is the wheel speed sensor. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, so that those skilled in the art can better understand the present invention and be able to implement it. However, the embodiments given are not intended to limit the present invention.

[0021] It should be noted that when an element is referred to as being "disposed on" or "fixed to" another element, it can be directly on the other element or there can also be an intermediate element. When an element is referred to as being "fixed to" another element or "fixedly connected" to another element, the connection between them can be a detachable fixing method or a non-detachable fixing method. When an element is considered to be "connected" or "rotatably connected" to another element, it can be directly connected to the other element or there may be an intermediate element at the same time. The terms "vertical", "horizontal", "left", "right", "up", "down" and similar expressions are only for the purpose of illustration and do not represent the only implementation manner.

[0022] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those skilled in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0023] In the present invention, the terms such as "first", "second", "third", etc. do not represent specific quantities and orders, but are only used for name distinction.

[0024] See Figure 1As shown in the figure, a decoupled electro-hydraulic control system for a two-wheeled vehicle includes a front brake 1, a rear brake 2, a front operating mechanism 3, a rear operating mechanism 4, a first master cylinder 5 connected to the front operating mechanism, a second master cylinder 6 connected to the rear operating mechanism, and a hydraulic actuator 7. The hydraulic actuator 7 includes a first actuator unit 70 connecting the first master cylinder and the front brake and a second actuator unit 71 connecting the second master cylinder and the rear brake. The first actuator unit 70 and the second actuator unit 71 are connected to the same motor actuator 8. The first actuator unit 70 includes a first inlet valve 701, a first pressure reducing valve 702, a first plunger pump 703, and a first accumulator 704. The first inlet valve 701 is connected to the first master cylinder 5 and the front brake 1. The first pressure reducing valve 702 is connected between the front brake 1 and the first accumulator 704. The first plunger pump 703 is connected between the first master cylinder 5 and the first accumulator 704. A first one-way valve 705 is further provided between the first master cylinder 5 and the first plunger pump 703. The first plunger pump 703 is connected to the motor actuator 8. The second actuator unit 71 includes a second inlet valve 711, a second pressure reducing valve 712, a second plunger pump 713, and a second accumulator 714. The second inlet valve 711 is connected to the second master cylinder 6 and the rear brake 2. The second pressure reducing valve 712 is connected between the rear brake 2 and the second accumulator 714. The second plunger pump 713 is connected between the second master cylinder 6 and the second accumulator 714. The second plunger pump 713 is connected to the motor actuator 8. A second one-way valve 715 is further provided between the second master cylinder 6 and the second plunger pump 713.

[0025] In this embodiment, the front operating mechanism is a front handbrake, and the rear operating mechanism can be a rear handbrake or a rear footbrake. Preferably, it is a rear handbrake. The motor actuator is a motor with a planetary gearbox. The motor actuator is connected to both the first plunger pump and the second plunger pump at the same time.

[0026] It further includes a third one-way valve 7011 and a fourth one-way valve 7111. The third one-way valve connects the front brake and the first master cylinder, and the brake fluid can only flow from the front brake to the first master cylinder. The fourth one-way valve connects the rear brake and the second master cylinder, and the brake fluid can only flow from the rear brake to the second master cylinder.

[0027] It further includes a controller 9 and a wheel speed sensor 10. The wheel speed sensor is used to collect the rotational speeds of the front and rear wheels and feedback the wheel speed information to the controller. The controller is also connected to the motor actuator.

[0028] The working principle of the present utility model is as follows:

[0029] When the driver operates the front operating mechanism and / or the rear operating mechanism, here taking the driver's operation of the front operating mechanism as an example for illustration, the front operating mechanism drives the first master cylinder to move. Since the first inlet valve is a normally open solenoid valve of two positions and two paths, after the first master cylinder moves, it directly conveys the brake fluid through the pipeline to the front brake, and the front brake performs braking. When the clamping force of the front brake is too large, the wheel speed sensor detects that the wheel is approaching the locked state, then the first inlet valve closes, cutting off the connection between the first master cylinder and the front brake. At the same time, the first pressure reducing valve is energized and conducts, and the brake fluid of the front brake drains into the first accumulator through the first pressure reducing valve, and the pressure of the front brake drops, and the wheel resumes rotation. When the wheel speed sensor detects that the rotational speed of the wheel exceeds the rotational speed threshold set by the controller, the first pressure reducing valve closes. At the same time, the first inlet valve opens, and the motor actuator works, driving the first plunger pump to work. The first plunger pump extracts the brake fluid in the first accumulator and enters the front brake through the first inlet valve to establish a braking pressure, causing the pressure of the front brake to rise and reducing the rotational speed of the wheel. This process repeats, ensuring that the wheel is at the optimal slip ratio, thus preventing the vehicle from getting out of control during braking.

[0030] When the driver releases the front operating mechanism, the first inlet valve opens, and the brake fluid of the front brake flows back into the first master cylinder. If there is brake fluid in the first accumulator, the piston in the first accumulator will reset to drain the brake fluid back into the first master cylinder.

[0031] The action process of the second execution unit is the same as that of the aforementioned first execution unit, ensuring that the front wheels and / or rear wheels will not lock during braking.

[0032] The present utility model simultaneously realizes anti-lock braking for the front and rear wheels of a two-wheeler through an electro-hydraulic control system, preventing the vehicle from getting out of control, overcoming the problem in the prior art that vehicles with only single-wheel anti-lock guide columns are prone to getting out of control. At the same time, the present utility model achieves integration and low cost, integrating into a single hydraulic actuator with a more compact structure, facilitating the layout of this control system in the vehicle, and overcoming the problems of insufficient space and high cost existing in the prior art where multiple sets of anti-lock mechanisms need to be arranged.

[0033] Based on the described embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of the present invention.

Claims

1. A decoupled electro-hydraulic control system for a two-wheeled vehicle, comprising a front brake, a rear brake, a front operating mechanism, a rear operating mechanism, a first master cylinder connected to the front operating mechanism, and a second master cylinder connected to the rear operating mechanism, characterized in that: It further includes a hydraulic actuator. The hydraulic actuator includes a first actuator unit connecting the first master cylinder and the front brake, and a second actuator unit connecting the second master cylinder and the rear brake. The first actuator unit and the second actuator unit are connected to the same motor actuator. The first actuator unit includes a first liquid inlet valve, a first pressure reducing valve, a first plunger pump, and a first accumulator. The first liquid inlet valve is connected to the first master cylinder and the front brake. The first pressure reducing valve is connected between the front brake and the first accumulator. The first plunger pump is connected between the first master cylinder and the first accumulator. A first one-way valve is further provided between the first master cylinder and the first plunger pump. The first plunger pump is connected to the motor actuator. The second actuator unit includes a second liquid inlet valve, a second pressure reducing valve, a second plunger pump, and a second accumulator. The second liquid inlet valve is connected to the second master cylinder and the rear brake. The second pressure reducing valve is connected between the rear brake and the second accumulator. The second plunger pump is connected between the second master cylinder and the second accumulator. The second plunger pump is connected to the motor actuator. A second one-way valve is further provided between the second master cylinder and the second plunger pump.

2. The decoupled electro-hydraulic control system for a two-wheeled vehicle according to claim 1, characterized in that: It further includes a third one-way valve and a fourth one-way valve. The third one-way valve connects the front brake and the first master cylinder, and the brake fluid can only flow from the front brake to the first master cylinder. The fourth one-way valve connects the rear brake and the second master cylinder, and the brake fluid can only flow from the rear brake to the second master cylinder.

3. The decoupled electro-hydraulic control system for a two-wheeled vehicle according to claim 1, characterized in that: It further includes a controller and a wheel speed sensor. The wheel speed sensor is used to collect the rotational speeds of the front and rear wheels and feedback the wheel speed information to the controller. The controller is also connected to the motor actuator.

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