An integrated electronic braking system

Abstract

The invention discloses an integrated electronic brake system, which integrates three subsystems: ABS (anti-lock brake system), ASR (Anti-slip Regulation) and EPB (Electrical Park Brake). By respectively arranging an ASR-ABS integrated valve, an EPB integrated valve and an ABS integrated valve, the valves of the three subsystems of the electronic brake system, namely, ABS, ASR and EPB, can be integrated, thereby realizing line resource sharing, reducing the arrangement of vehicle wiring harnesses and pipelines, and realizing vehicle lightweighting.

Description

Technical Field

[0001] The invention relates to the field of automobile braking systems, and in particular to an integrated electronic braking system. Background Art

[0002] The automobile braking system refers to a series of specialized devices that apply a certain force to certain parts of the automobile (mainly the wheels) to force braking to a certain degree. The functions of the braking system are: to force the moving car to slow down or even stop according to the driver's requirements; to keep the stopped car stable under various road conditions (including on ramps); and to keep the speed of the car driving downhill stable.

[0003] At present, the electronic control system of commercial vehicle chassis includes ABS (anti-lock braking system), ASR (Anti-slip Regulation drive anti-skid system) and EPB (Electrical Park Brake electronic parking system). The automobile ABS (anti-lock braking system) prevents the wheels from locking due to excessive braking force during emergency braking, ensuring driving stability and optimal road adhesion coefficient utilization; the ASR (Anti-slip Regulation drive anti-skid system) system prevents the driving wheels from slipping during starting and acceleration to maintain the stability of the vehicle's driving direction; the EPB (Electrical Park Brake) system is a technology that realizes parking brakes and combines parking brakes with driving brakes through electronic control. Figure 1 As shown, in the traditional electronic brake system, the ABS (anti-lock brake system) actuator is composed of left and right ABS solenoid valves, quick release valves, and relay valves; the ASR (anti-slip regulation) actuator is composed of ASR valves and relay valves; the EPB (electronic parking system) actuator is composed of ASR valves, parking memory valves, and relay valves. It can be seen that with the rapid development of automotive electronic technology, there are more and more commercial vehicle chassis electronic control systems, and the number of their brake actuators has increased sharply. A large number of pipelines and wiring harnesses have been added, making the chassis space more crowded, the vehicle weight increased, and the increase in pipelines has increased the risk of air leakage. Based on this, an integrated electronic brake system is provided, which can integrate the above-mentioned ABS (anti-lock brake system), ASR (anti-slip regulation anti-skid system) and EPB (electrical park brake electronic parking system), realize line resource sharing, reduce vehicle wiring harnesses and pipelines, and then realize vehicle lightweighting. This is a technical issue worth exploring in the field of automotive brake systems. Summary of the invention

[0004] In order to overcome the deficiencies of the prior art, the object of the present invention is to provide an integrated electronic brake system that can integrate ABS, ASR, and EPB subsystems to achieve line resource sharing and reduce vehicle wiring harnesses and pipelines.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] An integrated electronic brake system, characterized in that it includes an ECU controller, an air source device and a first air supply pipeline, a second air supply pipeline and a third air supply pipeline, wherein the air source device supplies air to the first air supply pipeline, the second air supply pipeline and the third air supply pipeline respectively; the first air outlet of the air source device is connected to the first air inlet of the brake main valve and the first air inlet of the first integrated valve respectively, the first air outlet of the brake main valve is connected to the second air inlet of the first integrated valve, the first air outlet and the second air outlet of the first integrated valve are connected to the rear brake air chamber respectively to form the first air supply pipeline, and the first integrated valve is ABS-ASR integrated valve; the second air outlet of the air source device is connected to the second air inlet of the brake master valve, the second air outlet of the brake master valve is connected to the air inlet of the second integrated valve, the air outlet of the second integrated valve is connected to the front brake chamber to form the second air supply pipeline, and the second integrated valve is an ABS integrated valve; the third air outlet of the air source device is connected to the air inlet of the third integrated valve, the air outlet of the third integrated valve is connected to the rear brake air chamber to form the third air supply pipeline, and the third integrated valve is an EPB integrated valve; the ECU controller is connected to the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor through signals respectively.

[0007] Furthermore, an integrated electronic brake system as described in claim 1 is characterized in that: the first integrated valve includes an ASR solenoid valve, a relay valve, a two-way check valve, a left rear ABS solenoid valve and a right rear ABS solenoid valve; the first air inlet of the first integrated valve is divided into two branches, which are respectively connected to the air inlet of the ASR solenoid valve and the first air inlet of the relay valve, the second air inlet of the first integrated valve is connected to the air inlet at one end of the two-way check valve, the air outlet of the ASR solenoid valve is connected to the air inlet at the other end of the two-way check valve, and the air outlet of the two-way check valve is connected to the second air inlet of the relay valve; the air outlet of the relay valve is respectively connected to the air inlet of the left rear ABS solenoid valve and the air inlet of the right rear ABS solenoid valve, the air outlet of the left rear ABS solenoid valve is connected to the left rear brake air chamber of the rear brake air chamber, and the air outlet of the right rear ABS solenoid valve is connected to the right rear brake air chamber of the rear brake air chamber.

[0008] Furthermore, the integrated electronic brake system as described in claim 1 is characterized in that: the second integrated valve includes a left ABS solenoid valve, a right ABS solenoid valve and a quick release valve; the second integrated valve includes a left ABS solenoid valve, a right ABS solenoid valve and a quick release valve; the air inlet of the quick release valve is connected to the second air outlet of the brake master valve, and the air outlet of the quick release valve is connected to the air inlet of the left ABS solenoid valve and the air inlet of the right ABS solenoid valve respectively; the air outlet of the left ABS solenoid valve is connected to the left front brake air chamber of the front brake air chamber, and the air outlet of the right ABS solenoid valve is connected to the right front brake air chamber of the front brake air chamber.

[0009] Furthermore, an integrated electronic brake system as described in claim 1 is characterized in that: the third integrated valve includes a parking memory valve and a differential relay valve, the third integrated valve includes a parking memory valve and a differential relay valve, the air inlet of the third integrated valve is divided into two branches, which are respectively connected to the air inlet of the parking memory valve and the first air inlet of the differential relay valve; the air outlet of the parking memory valve is connected to the second air inlet of the differential relay valve; the air outlet of the differential relay valve is respectively connected to the left rear brake chamber and the right rear brake chamber of the rear brake chamber.

[0010] Furthermore, the integrated electronic brake system as described in claim 1 is characterized in that: the air source device includes an air cylinder, and the air cylinder is connected to the first air outlet, the second air outlet, and the third air outlet of the air source device.

[0011] Furthermore, the air cylinder includes a first air cylinder, a second air cylinder, and a third air cylinder. The first air cylinder is connected to the first air outlet of the air source device; the second air cylinder is connected to the second air outlet of the air source device; and the third air cylinder is connected to the third air outlet of the air source device.

[0012] Furthermore, the integrated electronic brake system further includes an EPB switch, and the EPB switch is respectively connected to the ECU controller and the third integrated valve via signals.

[0013] Furthermore, the integrated electronic brake system also includes a power supply, which is electrically connected to the ECU controller, the EPB switch, the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor.

[0014] Furthermore, the air source device includes an air compressor and a dryer, the air outlet of the air compressor is connected to the air inlet of the dryer, and the air outlet of the dryer is connected to the first air supply pipeline, the second air supply pipeline and the third air supply pipeline respectively.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] An integrated electronic brake system of the present invention integrates the valves of the three subsystems of the electronic brake system, namely, ABS, ASR and EPB, by respectively arranging an ASR-ABS integrated valve, an EPB integrated valve and an ABS integrated valve, thereby realizing line resource sharing, reducing the arrangement of vehicle wiring harnesses and pipelines, and realizing vehicle lightweighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 To invent a structural connection diagram of an integrated electronic brake system;

[0018] Figure 2 This is a schematic diagram of the ASR-ABS integrated valve structure;

[0019] Figure 3 This is a schematic diagram of the ABS integrated valve structure;

[0020] Figure 4 This is a schematic diagram of the EPB integrated valve structure. DETAILED DESCRIPTION

[0021] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0022] like Figure 1 An integrated electronic brake system shown in the figure includes an ECU controller, an air source device and a first air supply pipeline, a second air supply pipeline and a third air supply pipeline. The air source device supplies air to the first air supply pipeline, the second air supply pipeline and the third air supply pipeline respectively; the first air outlet of the air source device is connected to the first air inlet of the brake main valve and the first air inlet of the first integrated valve respectively, the first air outlet of the brake main valve is connected to the second air inlet of the first integrated valve, the first air outlet and the second air outlet of the first integrated valve are connected to the rear brake air chamber respectively to form a first air supply pipeline, and the first integrated valve is ABS- ASR integrated valve; the second air outlet of the air source device is connected to the second air inlet of the brake master valve, the second air outlet of the brake master valve is connected to the air inlet of the second integrated valve, the air outlet of the second integrated valve is connected to the front brake chamber to form a second air supply pipeline, and the second integrated valve is an ABS integrated valve; the third air outlet of the air source device is connected to the air inlet of the third integrated valve, the air outlet of the third integrated valve is connected to the rear brake air chamber to form a third air supply pipeline, and the third integrated valve is an EPB integrated valve; the ECU controller connects the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor respectively.

[0023] The integrated electronic brake system of this embodiment is intended to integrate the traditional ASR (Anti-slip Regulation) system, EPB (Electrical Park Brake) system, and automobile ABS (Anti-lock Braking System) system. Since the actuators of the above systems have certain similarities and use some of the same valves, integrating the above systems can achieve resource sharing, reduce vehicle wiring harnesses and pipelines, achieve vehicle lightweighting, and reduce costs.

[0024] This integrated electronic brake system includes the functions of each subsystem of the ABS system, ASR system, and EPB system. The integrated system execution device includes: an air source device, an air reservoir, a main brake valve, a front brake air chamber, a rear brake air chamber, a wheel speed sensor, a first integrated valve (ASR-ABS integrated valve), a second integrated valve (ABS integrated valve), a third integrated valve (EPB integrated valve), an EPB switch, and an ECU controller. Among them, the ABS integrated valve integrates a left ABS solenoid valve, a quick release valve, and a right ABS solenoid valve; the ASR-ABS integrated valve integrates a left rear ABS solenoid valve, a relay valve, a right rear ABS solenoid valve, an ASR solenoid valve, and a two-way one-way valve; the EPB integrated valve integrates a parking memory valve and a differential relay valve. Specifically, Figure 2 As shown, the first integrated valve (ASR-ABS integrated valve) includes an ASR solenoid valve, a relay valve, a two-way check valve, a left rear ABS solenoid valve and a right rear ABS solenoid valve; the first air inlet of the first integrated valve is divided into two branches, which are respectively connected to the air inlet of the ASR solenoid valve and the first air inlet of the relay valve, the second air inlet of the first integrated valve is connected to the air inlet of one end of the two-way check valve, the air outlet of the ASR solenoid valve is connected to the air inlet of the other end of the two-way check valve, and the air outlet of the two-way check valve is connected to the second air inlet of the relay valve; the air outlet of the relay valve is respectively connected to the air inlet of the left rear ABS solenoid valve and the air inlet of the right rear ABS solenoid valve, the air outlet of the left rear ABS solenoid valve is connected to the left rear brake air chamber of the rear brake air chamber, and the air outlet of the right rear ABS solenoid valve is connected to the right rear brake air chamber of the rear brake air chamber. As shown Figure 3 As shown, the second integrated valve (ABS integrated valve) includes a left ABS solenoid valve, a right ABS solenoid valve and a quick release valve; the second integrated valve includes a left ABS solenoid valve, a right ABS solenoid valve and a quick release valve; the air inlet of the quick release valve is connected to the second air outlet of the brake master valve, and the air outlet of the quick release valve is connected to the air inlet of the left ABS solenoid valve and the air inlet of the right ABS solenoid valve respectively; the air outlet of the left ABS solenoid valve is connected to the left front brake air chamber of the front brake air chamber, and the air outlet of the right ABS solenoid valve is connected to the right front brake air chamber of the front brake air chamber. Figure 4As shown, the third integrated valve (EPB integrated valve) includes a parking memory valve and a differential relay valve. The third integrated valve includes a parking memory valve and a differential relay valve. The air inlet of the third integrated valve is divided into two branches, which are respectively connected to the air inlet of the parking memory valve and the first air inlet of the differential relay valve; the air outlet of the parking memory valve is connected to the second air inlet of the differential relay valve; the air outlet of the differential relay valve is respectively connected to the left rear brake air chamber and the right rear brake air chamber of the rear brake air chamber. The ABS integrated valve is located on the air supply pipeline from the brake master valve to the front brake air chamber, and the ABS-ASR integrated valve is located on the air supply pipeline of the driving chamber of the brake air chamber. When the driver steps on the brake master valve pedal, the gas enters the ABS integrated valve from the brake master valve outlet. When the wheel tends to lock as the air pressure increases, the wheel speed sensor detects the wheel information, and the ECU controller issues a command to control the ABS integrated valve, and controls the brake air chamber pressure by reducing pressure, maintaining pressure, and increasing pressure to prevent the wheel from locking, so that the wheel slip rate is kept within a reasonable range. When the vehicle starts or accelerates, the wheel speed sensor detects that the rear axle wheels of the vehicle tend to slip, and the ECU controller issues a command to control the ABS-ASR integrated valve to adjust the brake chamber pressure to prevent the drive wheels from slipping. The EPB integrated valve is located on the pipeline of the parking chamber of the rear brake chamber. When the driver operates the parking button of the EPB switch, the air in the parking chamber of the rear brake chamber is discharged from the EPB integrated valve to achieve electronic parking.

[0025] In addition, the air source device is connected to three air storage cylinders, which supply air sources to the brake master valve, ABS-ASR integrated valve, and EPB integrated valve respectively. The air source device specifically includes an air compressor and a dryer. The air outlet of the air compressor is connected to the air inlet of the dryer, and the air outlet of the dryer is connected to three air supply pipelines respectively to realize the pneumatic control of the three brake subsystems. The front and rear axles of the vehicle are equipped with gear rings, wheel speed sensors, and brake air chambers. The gear rings and wheel speed sensors provide wheel speed information to the ECU controller. The EPB switch is connected to the ECU controller. The ABS integrated valve is located on the air supply pipeline from the brake master valve to the front brake air chamber. The air outlet of the ABS-ASR integrated valve is connected to the driving chamber of the rear brake air chamber, and the EPB integrated valve is connected to the parking chamber of the rear brake air chamber. The ECU controller makes a judgment on the current vehicle status according to each wheel speed sensor and the EPB switch, and then starts the corresponding control program to realize the control function of each system. The power supply is electrically connected to the ECU controller, the EPB switch, the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor to power each component.

[0026] An integrated electronic brake system of the present embodiment integrates the valves of the three subsystems of the electronic brake system, namely, ABS, ASR and EPB, by respectively setting an ASR-ABS integrated valve, an EPB integrated valve and an ABS integrated valve, thereby realizing line resource sharing, reducing the arrangement of vehicle wiring harnesses and pipelines, and achieving vehicle lightweighting.

[0027] The above-mentioned embodiments are only preferred embodiments of the present invention and cannot be used to limit the scope of protection of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. An integrated electronic braking system, characterized in that: It includes an ECU controller, an air source device and a first air supply pipeline, a second air supply pipeline and a third air supply pipeline. The air source device supplies air to the first air supply pipeline, the second air supply pipeline and the third air supply pipeline respectively; the first air outlet of the air source device is connected to the first air inlet of the brake master valve and the first air inlet of the first integrated valve respectively, the first air outlet of the brake master valve is connected to the second air inlet of the first integrated valve, the first air outlet and the second air outlet of the first integrated valve are connected to the rear brake air chamber respectively to form the first air supply pipeline, and the first integrated valve is an ABS-ASR integrated valve; the air source device The second air outlet of the air source device is connected to the second air inlet of the brake master valve, the second air outlet of the brake master valve is connected to the air inlet of the second integrated valve, the air outlet of the second integrated valve is connected to the front brake chamber to form the second air supply pipeline, and the second integrated valve is an ABS integrated valve; the third air outlet of the air source device is connected to the air inlet of the third integrated valve, the air outlet of the third integrated valve is connected to the rear brake air chamber to form the third air supply pipeline, and the third integrated valve is an EPB integrated valve; the ECU controller is respectively connected to the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor by signals; The first integrated valve includes an ASR solenoid valve, a relay valve, a two-way check valve, a left rear ABS solenoid valve and a right rear ABS solenoid valve; the first air inlet of the first integrated valve is divided into two branches, which are respectively connected to the air inlet of the ASR solenoid valve and the first air inlet of the relay valve, the second air inlet of the first integrated valve is connected to the air inlet at one end of the two-way check valve, the air outlet of the ASR solenoid valve is connected to the air inlet at the other end of the two-way check valve, and the air outlet of the two-way check valve is connected to the second air inlet of the relay valve; the air outlet of the relay valve is respectively connected to the air inlet of the left rear ABS solenoid valve and the air inlet of the right rear ABS solenoid valve. The air outlet of the left rear ABS solenoid valve is connected to the left rear brake air chamber of the rear brake air chamber, and the air outlet of the right rear ABS solenoid valve is connected to the right rear brake air chamber of the rear brake air chamber; the second integrated valve includes a left ABS solenoid valve, a right ABS solenoid valve and a quick release valve; the air inlet of the quick release valve is connected to the second air outlet of the brake master valve, and the air outlet of the quick release valve is respectively connected to the air inlet of the left ABS solenoid valve and the air inlet of the right ABS solenoid valve; the air outlet of the left ABS solenoid valve is connected to the left front brake air chamber of the front brake air chamber, and the air outlet of the right ABS solenoid valve is connected to the right front brake air chamber of the front brake air chamber; The third integrated valve includes a parking memory valve and a differential relay valve. The air inlet of the third integrated valve is divided into two branches, which are respectively connected to the air inlet of the parking memory valve and the first air inlet of the differential relay valve; the air outlet of the parking memory valve is connected to the second air inlet of the differential relay valve; the air outlet of the differential relay valve is respectively connected to the left rear brake chamber and the right rear brake chamber of the rear brake chamber.

2. An integrated electronic brake system as claimed in claim 1, characterized in that: The air source device comprises an air storage cylinder, and the air storage cylinder is connected to the first air outlet, the second air outlet, and the third air outlet of the air source device.

3. An integrated electronic brake system as claimed in claim 2, characterized in that: The air storage cylinder includes a first air storage cylinder, a second air storage cylinder, and a third air storage cylinder. The first air storage cylinder is connected to the first air outlet of the air source device; the second air storage cylinder is connected to the second air outlet of the air source device; and the third air storage cylinder is connected to the third air outlet of the air source device.

4. An integrated electronic brake system as claimed in claim 1, characterized in that: The integrated electronic brake system further includes an EPB switch, and the EPB switch is respectively connected to the ECU controller and the third integrated valve by signals.

5. An integrated electronic brake system as claimed in claim 4, characterized in that: The integrated electronic brake system further includes a power supply, which is electrically connected to the ECU controller, the EPB switch, the first integrated valve, the second integrated valve, the third integrated valve and the wheel speed sensor.

6. An integrated electronic brake system as claimed in claim 1, characterized in that: The air source device includes an air compressor and a dryer, the air outlet of the air compressor is connected to the air inlet of the dryer, and the air outlet of the dryer is connected to the first air supply pipeline, the second air supply pipeline and the third air supply pipeline respectively.

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