Automobile braking capacity improving system and method and vehicle

Abstract

The invention discloses an automobile braking capacity improving system and method and an automobile. Wherein the lifting system comprises a working oil cylinder and a pulse generating system; the working oil cylinder is arranged between the vehicle frame and the tire suspension and serves as an execution component for improving the braking capacity, and the pulse generating system is installed on the vehicle body and serves as a control component for improving the braking capacity. When an ABS (anti-lock brake system) intervenes and a braking pulse high-voltage signal is generated, the vehicle is in an emergency braking state, and on the basis of not influencing an original automobile braking system, the positive pressure between the tire and the road surface is increased by utilizing instantaneous pulse force, so that the tire obtains larger friction force, the current automobile braking physical limit is broken through, and the braking distance of the automobile is reduced by 100 kilometers.

Description

Technical Field

[0001] The present invention relates to a vehicle braking ability improvement system, an improvement method, and a vehicle including such an improvement system. Background Art

[0002] The braking force of an automobile comes from the frictional force between the automobile tires and the road surface F , that is μ • N . Among them, μ is the friction coefficient between the tire and the road surface, which is related to the structure of the road surface and the contact area between the tire and the road surface; N is the normal pressure of the tire on the road surface, that is, the gravity of the vehicle frame supported by this tire.

[0003] It can be seen from this that the braking force of an automobile has a maximum value under certain road conditions, that is, an automobile has a shortest braking distance limit at a certain speed, that is, there is a physical limit to the braking distance of an automobile. Generally, the braking effect of an automobile is represented by the braking distance per 100 kilometers. Through the continuous iteration of modern braking electronic technologies such as ABS, EBD, BAS, TCS, and ESC / ESP, the braking distance per 100 kilometers of an automobile has approached the above physical limit. Therefore, improving the braking ability of an automobile and reducing the braking distance per 100 kilometers of an automobile have become technical problems that cannot be broken through in this field. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a vehicle braking ability improvement system, an improvement method, and a vehicle including such an improvement system that can break through the physical limit of vehicle braking, improve the braking ability of the vehicle, and greatly reduce the braking distance per 100 kilometers of the vehicle.

[0005] To solve the above technical problem, the technical solution of the present invention is: a vehicle braking ability improvement system, including: A working oil cylinder, which is arranged between the vehicle frame and the tire suspension and is used to generate a pulsed force between the vehicle frame and the tire suspension; A pulse generation system, which is used to supply hydraulic oil to the working oil cylinder, including a low-pressure oil storage tank and a high-pressure oil storage tank. A solenoid valve one is arranged on the oil path between the low-pressure oil storage tank and the working oil cylinder, a solenoid valve two is arranged on the oil path between the high-pressure oil storage tank and the working oil cylinder, a drain oil path is also arranged between the low-pressure oil storage tank and the working oil cylinder, a solenoid valve three is arranged on the drain oil path, and a check valve one that opens unidirectionally from the working oil cylinder towards the solenoid valve three is arranged between the solenoid valve three and the working oil cylinder; it also includes an electronic control device, and the low-pressure oil storage tank, the high-pressure oil storage tank, the solenoid valve one, the solenoid valve two, and the solenoid valve three are connected to the electronic control device.

[0006] As a preferred technical solution, a pressure boosting oil circuit is provided between the low-pressure storage oil tank and the high-pressure storage oil tank. A pressure boosting oil pump is provided on the pressure boosting oil circuit. A check valve II that opens unidirectionally from the low-pressure storage oil tank towards the high-pressure storage oil tank is provided between the pressure boosting oil pump and the high-pressure storage oil tank.

[0007] Another preferred technical solution, a method for improving the braking ability of an automobile, includes the following steps: S1. At the initial stage of braking, when the driver steps on the brake pedal, the solenoid valve I on the oil circuit connecting the low-pressure storage oil tank and the working oil cylinder is opened, and the hydraulic oil in the low-pressure storage oil tank is injected into the working oil cylinder. The working oil cylinder starts to work, and a dynamic continuous rigid connection is established between the vehicle frame and the tire suspension. S2. When the driver's braking intention is further strengthened and the ABS system is activated, and an ABS pulse high-pressure signal is generated in the braking oil circuit, the electronic control device starts to work. The solenoid valve II on the oil circuit connecting the high-pressure storage oil tank and the working oil cylinder is opened, and at the same time, the solenoid valve I on the oil circuit connecting the low-pressure storage oil tank and the working oil cylinder is closed. The hydraulic oil in the high-pressure storage oil tank is instantaneously injected into the working oil cylinder, causing the movable plunger of the working oil cylinder to quickly rise to generate a pulse force. This pulse force acts between the vehicle frame and the tire suspension, increasing the positive pressure of the tire on the ground and improving the friction between the tire and the ground. The moment when the hydraulic oil in the high-pressure storage oil tank is injected into the working oil cylinder is synchronized and of the same frequency as the pulse oil pressure signal of the ABS system. S3. When the pulse oil pressure of the ABS system starts to release pressure after reaching the maximum, the solenoid valve II on the oil circuit connecting the high-pressure storage oil tank and the working oil cylinder is closed, and the supply of hydraulic oil from the high-pressure storage oil tank stops. The solenoid valve I on the oil circuit connecting the low-pressure storage oil tank and the working oil cylinder is opened, and the low-pressure storage oil tank and the working oil cylinder are connected again. The hydraulic oil flows between the low-pressure storage oil tank and the working oil cylinder under the coercion of the up and down movement of the tire suspension, returning to the state of step S1. S4. During the operation of the entire braking system, steps S1 to S3 are cyclically repeated. S5. After braking, the solenoid valve I on the oil circuit connecting the low-pressure storage oil tank and the working oil cylinder is closed, and the solenoid valve III on the oil drain circuit between the low-pressure storage oil tank and the working oil cylinder is opened. The hydraulic oil in the working oil cylinder flows back into the low-pressure storage oil tank under the coercion of the up and down movement of the tire suspension, and the working oil cylinder stops working.

[0008] As a preferred technical solution, between step S2 and step S3, when the oil pressure in the high-pressure storage oil tank drops to the set pressure limit, the hydraulic oil in the low-pressure storage oil tank is transported to the high-pressure storage oil tank through the pressure boosting oil pump to always maintain the high-pressure working state of the high-pressure storage oil tank.

[0009] Another preferred technical solution is a vehicle, comprising a vehicle braking capacity enhancement system as described in any one of claims 1 or 2, wherein a working oil cylinder is respectively provided between each tire suspension and the frame, and multiple working oil cylinders share a low-pressure oil storage tank and a high-pressure oil storage tank.

[0010] Due to the adoption of the above technical solution, the beneficial effects of the present invention are: 1. In the initial stage of braking, hydraulic oil is injected into the working cylinder through the low-pressure oil storage tank, and a continuous rigid connection is immediately established between the frame and the tire suspension to ensure that when the ABS pulse high-voltage signal is generated, the pulse force generation system is immediately started, and the working cylinder can instantly achieve the effect of pulse pressure. If hydraulic oil is not injected into the working cylinder in advance at the initial moment of braking, so that the active plunger of the working cylinder follows the instantaneous movement of the tire suspension, when the ABS pulse high-voltage signal is generated, high-pressure oil is injected into the working cylinder again, at this time, the high-pressure oil first pushes the plunger of the working cylinder to extend until it supports the tire suspension, and then generates a pulse thrust on the tire suspension and the frame, so that the process of extending the working cylinder plunger takes a period of time, so that the generation of pulse force lags behind the ABS high-voltage pulse signal and cannot be synchronized with the ABS high-voltage pulse signal, so the operation of injecting hydraulic oil into the working cylinder in the initial stage of braking is a prerequisite for the present invention to achieve instantaneous pulse pressure.

[0011] 2. When ABS intervenes and a high-voltage brake pulse signal is generated, the vehicle is in an emergency braking state. On the basis of not affecting the original vehicle braking system, the instantaneous pulse force is used to increase the positive pressure between the tire and the road surface, so that the tire obtains greater friction, thereby breaking through the current physical limit of vehicle braking and reducing the braking distance of the vehicle per 100 kilometers. If the pulse force is designed to be the same as the frame gravity shared by the tire suspension, then the positive pressure of the tire under the tire suspension on the ground will increase by 1 times, and the friction of the tire on the ground will increase by 1 times, that is, the braking force of the tire will increase by 1 times, and the braking force of the entire vehicle will increase by 1 times, so the braking distance per 100 kilometers will theoretically be shortened by half. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] The following drawings are intended only to illustrate and explain the present invention, and do not limit the scope of the present invention. Figure 1 is a hydraulic principle diagram of an embodiment of the present invention; Figure 2 is a method flow chart of an embodiment of the present invention; In the figure: 1-working oil cylinder; 2-low-pressure oil storage tank; 3-high-pressure oil storage tank; 4-solenoid valve 1; 5-solenoid valve 2; 6-solenoid valve 3; 7-check valve 1; 8-boosting oil pump; 9-check valve 2; 10-electronic control device. DETAILED DESCRIPTION

[0013] The present invention will be further described below in conjunction with the accompanying drawings and embodiments. In the following detailed description, only some exemplary embodiments of the present invention are described by way of illustration. Without doubt, those of ordinary skill in the art can recognize that various modifications can be made to the described embodiments without departing from the spirit and scope of the present invention. Therefore, the drawings and the description are illustrative in nature and are not used to limit the protection scope of the claims.

[0014] As Figure 1 shown, an automobile braking ability improvement system includes a working oil cylinder 1 and a pulse generation system. The working oil cylinder 1 is arranged between the vehicle frame and the tire suspension and serves as an execution component for improving the braking ability in this embodiment. The pulse generation system is installed on the vehicle and serves as a control component for improving the braking ability in this embodiment. It generates a pulse force between the vehicle frame and the tire suspension by supplying high-pressure oil into the working oil cylinder 1. This pulse force is superimposed on the original normal pressure of the tire (the gravity of the vehicle frame supported by the tire), increasing the normal pressure between the tire and the road surface, enabling the tire to obtain a greater frictional force, thereby breaking through the physical limit of vehicle braking and reducing the vehicle's braking distance per 100 kilometers.

[0015] In this embodiment, the working oil cylinder 1 is vertically arranged, the cylinder body is fixedly installed on the vehicle frame, and the movable plunger support point of the working oil cylinder 1 contacts downward above the tire suspension without forming a structural connection with the suspension. Its shock absorption between the vehicle frame and the tire suspension is independent and does not affect the shock absorption between the vehicle frame and the tire suspension.

[0016] The pulse generation system includes a low-pressure oil storage tank 2 and a high-pressure oil storage tank 3. An electromagnetic valve 4 is provided on the oil path between the low-pressure oil storage tank 2 and the working oil cylinder 1. An electromagnetic valve 5 is provided on the oil path between the high-pressure oil storage tank 3 and the working oil cylinder 1. A drain oil path is also provided between the low-pressure oil storage tank 2 and the working oil cylinder 1. An electromagnetic valve 6 is provided on the drain oil path. A check valve 7 that opens unidirectionally from the working oil cylinder 1 towards the electromagnetic valve 6 is provided between the electromagnetic valve 6 and the working oil cylinder 1. A pressurization oil path is provided between the low-pressure oil storage tank 2 and the high-pressure oil storage tank 3. A pressurization oil pump 8 is provided on the pressurization oil path. A check valve 9 that opens unidirectionally from the low-pressure oil storage tank 2 towards the high-pressure oil storage tank 3 is provided between the pressurization oil pump 8 and the high-pressure oil storage tank 3. An electronic control device 10 is also included. The low-pressure oil storage tank 2, the high-pressure oil storage tank 3, the electromagnetic valve 4, the electromagnetic valve 5, the electromagnetic valve 6, and the pressurization oil pump 8 are connected to the electronic control device 10.

[0017] In this embodiment, solenoid valve 1 4 is a normally closed solenoid valve, solenoid valve 2 5 is a normally closed solenoid valve, and solenoid valve 3 6 is a normally open solenoid valve; the electronic control device 10 controls the opening and closing of each solenoid valve and controls the oil supply of the low-pressure oil storage tank 2, the high-pressure oil storage tank 3, and the booster oil pump 8. It is used to receive the ABS pulse high-voltage signal to control the operation of this system.

[0018] See Figure 2 , a method for improving the braking ability of an automobile, comprising the following steps: S1. Initial stage of braking: That is, when the driver has the intention to brake and steps on the brake pedal, solenoid valve 1 4 opens, solenoid valve 3 6 closes, and the hydraulic oil in the low-pressure oil storage tank 2 is injected into the working cylinder 1 through solenoid valve 1 4. The working cylinder 1 starts to work, and the movable plunger immediately rises, establishing a dynamic continuous rigid connection between the vehicle frame and the tire suspension. Here, "dynamic continuous" means that the movable plunger of the working cylinder 1 extends and contracts when following the tire suspension to move away from and close to the vehicle frame under the push of the low-pressure oil; "rigid connection" means that when the vehicle frame and the tire suspension are at any displacement and at any moment, solenoid valve 1 4 on the oil circuit connecting the working cylinder 1 and the low-pressure oil storage tank 2 is closed, and when the tire suspension moves towards the vehicle frame direction, it can be rigidly blocked because the hydraulic oil in the working cylinder 1 has nowhere to drain and is incompressible, thus forming a rigid connection, making the vehicle frame, the working cylinder 1, and the tire suspension present a state similar to being fixed.

[0019] S2. The ABS system is activated: When the vehicle enters the emergency braking state, the ABS system starts to work, and an ABS pulse high voltage is generated in the braking oil circuit. At this moment, this system immediately responds and starts to work. The pulse high-voltage signal in the ABS braking oil circuit is used to control solenoid valve 2 5 to open through the electronic control device. At the same time, solenoid valve 1 4 closes, and solenoid valve 3 6 closes, so that the high-pressure oil in the high-pressure oil storage tank 3 is instantaneously injected into the working cylinder 1, causing the movable plunger of the cylinder to extend and generating a powerful pulse force. This pulse force acts between the vehicle frame and the tire suspension, superimposed on the gravity of the vehicle frame borne by the tire, greatly increasing the normal pressure of the tire on the road surface, that is, increasing the friction between the tire and the road surface and improving the braking effect. The moment when the hydraulic oil in the high-pressure oil storage tank 3 is injected into the working cylinder 1 is synchronized and of the same frequency as the pulse oil pressure signal of the ABS system, that is, the ABS pulse high-voltage signal is used as a trigger signal to control the injection of high-pressure oil into the working cylinder 1.

[0020] S3. When the pulse oil pressure of the ABS system starts to relieve pressure after reaching the maximum, solenoid valve 2 5 is controlled to close through the electronic control device, and the hydraulic oil supply from the high-pressure oil storage tank 3 stops. At the same time, solenoid valve 1 4 opens, reconnecting the low-pressure oil storage tank 2 and the working cylinder 1. The hydraulic oil flows between the low-pressure oil storage tank 2 and the working cylinder 1 under the coercion of the up and down movement of the tire suspension, and this system enters the initial stage of braking, that is, it returns to the state of step S1.

[0021] S4. During the operation of the entire braking system, steps S1 to S3 are cyclically repeated, so that the working cylinder 1 responds instantaneously to the ABS pulse high-voltage signal.

[0022] Through the above-mentioned cyclic working process, the pressure in the high-pressure oil storage tank 3 will decrease. When it decreases to the set pressure limit, the booster oil pump 8 starts to work, pumping the hydraulic oil in the low-pressure oil storage tank 2 into the high-pressure oil storage tank 3, and always maintaining the normal high-pressure working state of the high-pressure oil storage tank 3. The function of the one-way valve is to prevent the hydraulic oil in the high-pressure oil storage tank 3 from flowing back into the low-pressure oil storage tank 2 when the booster oil pump 8 stops working.

[0023] S5. When the braking operation is finished, the electromagnetic valve 1 4 and the electromagnetic valve 2 5 are closed, and the electromagnetic valve 3 6 is opened. Under the action of the reciprocating displacement between the frame and the tire suspension, the working cylinder 1 is pressed, so that the hydraulic oil in the working cylinder 1 flows back to the low-pressure oil storage tank 2 through the one-way valve 7 and the electromagnetic valve 3 6 under the pressure of the up and down movement of the tire suspension, and the working cylinder 1 stops working.

[0024] A vehicle includes the above-mentioned automobile braking capacity enhancement system, wherein a working oil cylinder 1 is respectively provided between each tire suspension and the vehicle frame, and multiple working oil cylinders 1 share a low-pressure oil storage tank 2 and a high-pressure oil storage tank 3. The pulse force generation control relies on the mutual sharing and coordination of the brake oil pressure pulse signal of each tire and the ABS, EBD, BAS and other systems.

[0025] Of course, a balance sensor may also be provided on the vehicle to control the operation of the working cylinder 1 on one side to achieve the roll phenomenon of the vehicle body during balanced steering.

[0026] At the same time, when the working cylinders 1 on four tires or more tires generate pulse force at the same time, the car can be freed from trouble.

[0027] The technical points of the present invention are: 1. In the initial stage of braking, hydraulic oil is injected into the working cylinder through the low-pressure oil storage tank, and a continuous rigid connection is immediately established between the frame and the tire suspension to ensure that when the ABS pulse high-voltage signal is generated, the pulse force generation system is immediately started, and the working cylinder can instantly achieve the effect of pulse pressure. If hydraulic oil is not injected into the working cylinder in advance at the initial moment of braking, so that the active plunger of the working cylinder follows the instantaneous movement of the tire suspension, when the ABS pulse high-voltage signal is generated, high-pressure oil is injected into the working cylinder again, at this time, the high-pressure oil first pushes the plunger of the working cylinder to extend until it supports the tire suspension, and then generates a pulse thrust on the tire suspension and the frame, so that the process of extending the working cylinder plunger takes a period of time, so that the generation of pulse force lags behind the ABS high-voltage pulse signal and cannot be synchronized with the ABS high-voltage pulse signal, so the operation of injecting hydraulic oil into the working cylinder in the initial stage of braking is a prerequisite for the present invention to achieve instantaneous pulse pressure.

[0028] 2. When ABS intervenes and a high-voltage brake pulse signal is generated, the vehicle is in an emergency braking state. On the basis of not affecting the original vehicle braking system, the instantaneous pulse force is used to increase the positive pressure between the tire and the road surface, so that the tire obtains greater friction, thereby breaking through the current physical limit of vehicle braking and reducing the braking distance of the vehicle per 100 kilometers. If the pulse force is designed to be the same as the frame gravity shared by the tire suspension, then the positive pressure of the tire under the tire suspension on the ground will increase by 1 times, and the friction of the tire on the ground will increase by 1 times, that is, the braking force of the tire will increase by 1 times, and the braking force of the entire vehicle will increase by 1 times, so the braking distance per 100 kilometers will theoretically be shortened by half.

[0029] The above shows and describes the basic principles, main features and advantages of the present invention. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments. The above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, which fall within the scope of the present invention. The scope of protection of the present invention is defined by the attached claims and their equivalents.

Claims

1. An automobile braking ability improvement system, characterized in that, Comprising: A working oil cylinder, disposed between the vehicle frame and the tire suspension, for generating a pulse force between the vehicle frame and the tire suspension; A pulse generating system for supplying hydraulic oil into the working oil cylinder, including a low-pressure storage oil tank and a high-pressure storage oil tank. An electromagnetic valve I is provided on the oil path between the low-pressure storage oil tank and the working oil cylinder. An electromagnetic valve II is provided on the oil path between the high-pressure storage oil tank and the working oil cylinder. A drain oil path is further provided between the low-pressure storage oil tank and the working oil cylinder. An electromagnetic valve III is provided on the drain oil path. A check valve I that opens unidirectionally from the working oil cylinder towards the electromagnetic valve III is provided between the electromagnetic valve III and the working oil cylinder. It further includes an electronic control device, and the low-pressure storage oil tank, the high-pressure storage oil tank, the electromagnetic valve I, the electromagnetic valve II, and the electromagnetic valve III are connected to the electronic control device.

2. The vehicle braking ability improvement system according to claim 1, characterized in that: A pressurizing oil path is provided between the low-pressure storage oil tank and the high-pressure storage oil tank. A pressurizing oil pump is provided on the pressurizing oil path. A check valve II that opens unidirectionally from the low-pressure storage oil tank towards the high-pressure storage oil tank is provided between the pressurizing oil pump and the high-pressure storage oil tank.

3. A method for improving the braking ability of an automobile, characterized in that, Including the following steps: S1. In the initial stage of braking, the hydraulic oil in the low-pressure storage oil tank is injected into the working oil cylinder, and the working oil cylinder starts to work, establishing a dynamic continuous rigid connection between the vehicle frame and the tire suspension; S2. When the ABS system is activated and an ABS pulse high-pressure signal is generated in the braking oil path, the electronic control device starts to work. The hydraulic oil in the high-pressure storage oil tank is instantaneously injected into the working oil cylinder, causing the working oil cylinder to generate a pulse force. This pulse force acts between the vehicle frame and the tire suspension, increasing the positive pressure of the tire on the ground and improving the friction between the tire and the ground. The moment when the hydraulic oil in the high-pressure storage oil tank is injected into the working oil cylinder is synchronized and in the same frequency as the pulse oil pressure signal of the ABS system; S3. When the pulse oil pressure of the ABS system starts to relieve pressure after reaching the maximum, the supply of hydraulic oil from the high-pressure storage oil tank stops. The low-pressure storage oil tank is reconnected to the working oil cylinder, and the hydraulic oil flows between the low-pressure storage oil tank and the working oil cylinder under the coercion of the up and down movement of the tire suspension, returning to the state of step S1; S4. During the operation of the entire braking system, steps S1 to S3 are cyclically repeated; S5. After braking ends, the hydraulic oil in the working oil cylinder flows back into the low-pressure storage oil tank under the coercion of the up and down movement of the tire suspension, and the working oil cylinder stops working.

4. The method for improving the braking ability of an automobile according to claim 4, characterized in that: Between step S2 and step S3, when the oil pressure in the high-pressure storage oil tank drops to the set pressure limit, the hydraulic oil in the low-pressure storage oil tank is transported to the high-pressure storage oil tank through the pressurizing oil pump to always maintain the high-pressure working state of the high-pressure storage oil tank.

5. A vehicle, characterized in that: Including an automobile braking ability improvement system according to any one of claims 1 or 2. A working oil cylinder is respectively provided between each tire suspension and the vehicle frame, and multiple working oil cylinders share a low-pressure storage oil tank and a high-pressure storage oil tank.

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