An integrated automotive braking system

Abstract

The application discloses an integrated automobile brake system, a wear benefit early warning module, and a simulated stroke hydraulic cylinder, and belongs to the technical field of automobile brake systems.The wear benefit early warning module comprises a brake pedal and a brake master cylinder, and further comprises a simulated stroke hydraulic cylinder which is connected in parallel with the brake master cylinder, and the simulated stroke hydraulic cylinder is connected with a hydraulic sensor for detecting the hydraulic pressure of the simulated stroke hydraulic cylinder; the brake master cylinder is connected to a caliper through a main hydraulic path, and a hydraulic sensor is also connected to the main hydraulic path for detecting the hydraulic pressure on the main hydraulic path; an auxiliary brake module comprises a booster master cylinder and a motor driving system; the booster master cylinder is connected to the caliper through a bypass hydraulic path of a bypass control module; and the application further comprises a control module which executes the following method: inputting the hydraulic pressure of the simulated stroke hydraulic cylinder, the hydraulic pressure on the main hydraulic path, calculating the difference between the two, and controlling the motor driving system to drive the booster master cylinder to compensate. The application aims to design an integrated automobile brake system, add an auxiliary brake module, and automatically realize the transmission of hydraulic pressure through the motor driving system driving the booster master cylinder.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of automobile braking system, in particular to an integrated automobile braking system. BACKGROUND

[0002] The automobile braking system refers to a braking device and a special braking mechanism installed on an automobile to ensure the safe driving of the automobile and improve the average speed of the automobile; generally, the automobile braking system includes two independent devices, i.e., a driving braking device and a parking braking device; the two braking devices can be used simultaneously to increase the braking effect of the automobile; for some special purpose automobiles and automobiles frequently driving in mountainous areas, long-term and frequent braking will cause the driving braking device to overheat, and therefore various auxiliary braking devices of different types are often added to the automobiles to stabilize the speed when driving downhill.

[0003] The existing braking system can only know the wear condition of the brake disc when measuring the braking performance, and the pedal and other mechanical structures in the braking system and the hydraulic system cannot be known due to long-term work, and different drivers have different preferences for the softness and hardness of the pedal. SUMMARY

[0004] The purpose of the present application is to provide an integrated automobile braking system to solve the problems in the background art.

[0005] To solve the above technical problems, the present application provides the following technical scheme: an integrated automobile braking system,

[0006] The wear benefit early warning module includes a brake pedal and a brake master cylinder, and further includes a simulated stroke hydraulic cylinder connected in parallel with the brake master cylinder, and the simulated stroke hydraulic cylinder is connected with a hydraulic sensor for detecting the hydraulic pressure of the simulated stroke hydraulic cylinder;

[0007] The brake master cylinder is connected to the caliper through a main hydraulic path, and a hydraulic sensor is also connected to the main hydraulic path for detecting the hydraulic pressure on the main hydraulic path;

[0008] The auxiliary braking module includes a power-assisted master cylinder and an electric motor driving system;

[0009] The power-assisted master cylinder is connected to the caliper through a bypass hydraulic path of the bypass control module;

[0010] The control module further includes a control module, which performs the following method: inputting the hydraulic pressure of the simulated stroke hydraulic cylinder and the hydraulic pressure on the main hydraulic path, calculating the difference between the two, and the difference is the compensation amount; the electric motor driving system drives the power-assisted master cylinder to compensate, and the compensation hydraulic pressure is transmitted to the caliper through the bypass hydraulic path.

[0011] Preferably, the brake pedal and the brake master cylinder are both connected with a stroke sensor for detecting the stroke.

[0012] Preferably, the input end of the simulation stroke hydraulic cylinder is connected with a one-way valve, and the output end of the simulation stroke hydraulic cylinder is connected with a normally closed electromagnetic valve.

[0013] Preferably, the auxiliary brake module comprises a one-way valve connected to the output end of the power-assisted master cylinder, and a hydraulic sensor connected to the power-assisted master cylinder.

[0014] Preferably, an oil tank is further provided, and the oil tank is connected with the input pipeline of the brake master cylinder and the power-assisted master cylinder, and the output pipeline of the brake master cylinder.

[0015] Preferably, the output end of the brake master cylinder is connected with a main hydraulic circuit electromagnetic valve, and a one-way valve is connected between the main hydraulic circuit electromagnetic valve and the caliper.

[0016] Preferably, the bypass control module comprises a normally closed electromagnetic valve, a relay for controlling the normally closed electromagnetic valve, and the output end of the normally closed electromagnetic valve is connected to the caliper.

[0017] Preferably, a display and an alarm connected with the control module are further provided.

[0018] An automobile comprising the integrated automobile brake system.

[0019] Compared with the prior art, the automobile brake system has the following beneficial effects:

[0020] The application aims to design an integrated automobile brake system, add an auxiliary brake module, drive the power-assisted master cylinder by a motor driving system to automatically realize the transmission of hydraulic pressure, monitor the pipeline hydraulic pressure feedback to a single-chip microcomputer in real time, and then make the motor driving system increase or decrease the driving force, so as to stably maintain the mechanical feedback of the pedal. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the application. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the application will be clearly and completely described below with reference to the drawings in the embodiments of the application. Obviously, the described embodiments are only part of the embodiments of the application, rather than all the embodiments of the application. Based on the embodiments in the application, all other embodiments obtained by those skilled in the art without creative work fall within the protection scope of the application.

[0023] Referring to the drawings, an integrated automobile brake system comprises a brake master cylinder 2, a brake pedal 1 and a caliper 8.

[0024] The brake pedal 1 is driven by the brake master cylinder 2 to drive the caliper 8 to realize braking or disengaging braking; the brake master cylinder 2 transmits power to the caliper 8 through the main hydraulic circuit, and a one-way valve is arranged on the pipe from the output end of the main hydraulic circuit electromagnetic valve 7 to the caliper 8.

[0025] Further comprising a wear benefit early warning module 4, referring to the figure, including a master cylinder stroke sensor 41 and a pedal stroke sensor 42;

[0026] And an analog stroke hydraulic cylinder 45, referring to the figure, the analog stroke hydraulic cylinder 45 is connected in parallel with the brake master cylinder 2; the input end of the analog stroke hydraulic cylinder 45 is also connected in parallel with a one-way valve and a normally closed electromagnetic valve, and the normally closed electromagnetic valve is a redundant setting of the one-way valve, serving as a backup of the one-way valve. If the one-way valve fails, the normally closed electromagnetic valve is opened by the single-chip microcomputer. The analog stroke hydraulic cylinder 45 is connected with a hydraulic sensor.

[0027] Further comprising an auxiliary brake module 5, including a booster master cylinder 51, the output end of the booster master cylinder 51 is connected to an independent pipe to the caliper 8, and the output end of the booster master cylinder 51 is connected with a one-way valve; the booster master cylinder 51 is powered by a motor drive system 52, and the booster master cylinder 51 is connected with a hydraulic sensor.

[0028] Further comprising a bypass control module 6, including a normally closed electromagnetic valve, the normally closed electromagnetic valve is arranged on the bypass hydraulic circuit, and the bypass hydraulic circuit is a hydraulic circuit connected to the caliper independent of the main hydraulic circuit, the input end of the bypass hydraulic circuit is connected with the booster master cylinder 51, the bypass control module 6 is provided with a relay for controlling the opening or closing of the normally closed electromagnetic valve, and in addition, a hydraulic sensor is further provided for detecting the hydraulic pressure at the main hydraulic circuit electromagnetic valve 7.

[0029] Working principle: including a control module formed by a single-chip microcomputer, the control module controls the collection and detection of data by various sensors when the pedal is in use, including the hydraulic data of the analog stroke hydraulic cylinder and the main hydraulic circuit, and the hydraulic data of the analog stroke hydraulic cylinder is an ideal value. Compare the data with the main hydraulic circuit hydraulic data, calculate the difference, and analyze the actual working efficiency in the brake hydraulic circuit. A threshold value is set for the difference between the main hydraulic circuit and the analog hydraulic pressure, and if the threshold value is reached, the motor drive system 52 is started to compensate through the bypass hydraulic circuit of the booster master cylinder 51.

[0030] When the pedal is stepped on and the brake master cylinder is pulled, the data formed by the two is also collected by the single-chip microcomputer, and when the auxiliary brake module is in action, the hydraulic dynamic change data of the booster master cylinder 51 and the main hydraulic circuit are also collected. By comparing the stroke and hydraulic value change, the wear condition and the part of the brake system that has a problem can be analyzed, and an alarm threshold is set to alarm and display information through an alarm or a display, so as to help technicians diagnose the brake system.

[0031] While embodiments of the application have been shown and described, it is to be understood that the embodiments described are merely exemplary of the principles and application of the present application. Numerous modifications and adaptions can be made without departing from the spirit and scope of the present application, which is defined by the following claims and their equivalents.

Claims

1. An integrated automotive braking system, characterized in that: include: The wear benefit warning module includes a brake pedal and a brake master cylinder, as well as a simulated stroke hydraulic cylinder. The simulated stroke hydraulic cylinder is connected in parallel with the brake master cylinder, and a hydraulic sensor is connected to the simulated stroke hydraulic cylinder to detect the hydraulic pressure of the simulated stroke hydraulic cylinder. The master cylinder is connected to the caliper via the main hydraulic circuit, and a hydraulic sensor is also connected to the main hydraulic circuit to detect the hydraulic pressure. The auxiliary braking module includes a power-assisted master cylinder and a motor drive system; The power steering master cylinder is connected to the caliper via the bypass fluid path of the bypass control module; It also includes a control module, which performs the following steps: inputs the hydraulic pressure of the simulated stroke cylinder and the hydraulic pressure on the main hydraulic circuit, calculates the difference between the two, and the difference is the compensation amount. It controls the motor drive system to drive the power assist cylinder to perform compensation, and the compensation hydraulic pressure is transmitted to the caliper through the bypass hydraulic circuit. When the brake pedal is depressed, the master cylinder is pulled, and the data generated by both actions are collected. When the auxiliary braking module is activated, the data on the dynamic changes in hydraulic pressure of the master cylinder and the main hydraulic circuit are collected. By comparing the stroke and the changes in hydraulic pressure, the wear condition can be analyzed.

2. The integrated automotive braking system according to claim 1, characterized in that: Both the brake pedal and the master cylinder are connected to stroke sensors to detect the stroke.

3. An integrated automotive braking system according to claim 1, characterized in that: The input end of the simulated stroke hydraulic cylinder is connected to a check valve, and the output end of the simulated stroke hydraulic cylinder is connected to a normally closed solenoid valve.

4. An integrated automotive braking system according to claim 1, characterized in that: The auxiliary braking module includes a one-way valve at the output end of the power assist master cylinder and a hydraulic sensor connected to the power assist master cylinder.

5. An integrated automotive braking system according to claim 4, characterized in that: It also includes an oil reservoir, and the oil reservoir is connected to the input pipes of the brake master cylinder and the power assist master cylinder, as well as the output pipe of the brake master cylinder.

6. An integrated automotive braking system according to claim 1, characterized in that: The output end of the brake master cylinder is connected to the main hydraulic circuit solenoid valve, and a check valve is connected between the main hydraulic circuit solenoid valve and the caliper.

7. An integrated automotive braking system according to claim 1, characterized in that: The bypass control module includes a normally closed solenoid valve and a relay that controls the normally closed solenoid valve. The output of the normally closed solenoid valve is connected to the caliper.

8. An integrated automotive braking system according to claim 6, characterized in that: The main hydraulic circuit solenoid valve is a normally open solenoid valve.

9. An integrated automotive braking system according to claim 7, characterized in that: It also includes a display and an alarm that are connected to the control module.

10. A car, characterized in that: It includes an integrated automotive braking system as described in any one of claims 1-9.

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