A split electro-hydraulic braking system and its braking control method
An electro-hydraulic brake, split-type technology, applied in the direction of brake transmission device, brake action starting device, brake, etc., can solve the problems that cannot meet the requirements of heavy-duty vehicles, large volume, and the installation space of the whole vehicle cannot be installed. The effect of simple structure and small volume
Active Publication Date: 2021-11-26
南京经纬达汽车科技有限公司
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Problems solved by technology
[0004] However, some heavy-duty vehicles have higher requirements on the upper limit of the maximum braking pressure. If the above-mentioned conventional solution of the electro-hydraulic servo device is used, it is necessary to select a large-torque, large-volume motor and increase the internal transmission to ensure zero braking. In this way, the volume of the whole device will become very large. Even if the performance of the electro-hydraulic braking system meets the requirements of the braking pressure function, it is often limited by the installation space of the vehicle and cannot be installed, which cannot meet the requirements of heavy-duty vehicles. The need for hydraulic servo brakes
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[0044] Below in conjunction with specific embodiment the present invention is described in further detail, present embodiment implements under the premise of technical solution of the present invention, provides detailed implementation and specific operation process, but the present invention is not limited to following embodiment.
[0045] refer to Figure 1-6 , a split type electro-hydraulic braking system, including a first liquid storage tank 1, a human cylinder 2, a brake pedal 3, an ABS / ESC solenoid valve 4, a right front brake 5, a left front brake 10, a left rear brake 11, a right rear brake Brake 6, second liquid storage tank 7, master cylinder 8, electro-hydraulic brake device 9. In this embodiment, there are 4 brakes in total, and each brake has a brake wheel cylinder for implementing frictional braking. The oil inlet of the ABS / ESC solenoid valve 4 communicates with the oil outlet F of the manpower cylinder 2 through the hydraulic pipeline, and the oil outlet F co...
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The invention discloses a split type electro-hydraulic braking system, which comprises a first liquid storage tank, a manpower cylinder, a brake pedal, an ABS / ESC solenoid valve, a second liquid storage tank, an electro-hydraulic braking device, a master cylinder, and brakes. Wherein the first oil inlet on the manpower cylinder communicates with the first liquid storage tank, the oil outlet on the manpower cylinder communicates with the ABS / ESC solenoid valve, and the ABS / ESC solenoid valve communicates with the wheel cylinder of the brake through the hydraulic pipeline; The hydraulic brake device is connected to the master cylinder, and the oil outlet on the master cylinder communicates with the second oil inlet on the manpower cylinder through the hydraulic pipeline; a lever, a first piston, a piston push rod and a second piston are arranged in the manpower cylinder , An idle stroke is set between the piston top rod and the second piston. The braking control method of the split electro-hydraulic braking system of the present invention can realize modes such as autonomous braking, wire-controlled braking, power-assisted braking, and failure backup human braking, and has the advantages of small axial installation space and higher output braking pressure. The advantage of higher braking energy recovery efficiency.
Description
technical field [0001] The invention relates to an automobile braking system, in particular to a split electro-hydraulic braking system and a braking control method thereof. Background technique [0002] With the continuous development of pure electric vehicle technology, the requirements for the cruising range of pure electric vehicles are also getting higher and higher. There are many ways to increase the cruising range of electric vehicles, such as increasing the upper limit of power battery reserves and reducing average power consumption. Among them, the most effective technical means is to improve the efficiency of braking energy recovery. [0003] In recent years, the Bosch iBooster electromechanical servo booster mechanism and servo devices with similar structure and functions have appeared on the market. This type of servo device reserves a small idle stroke to support the energy recovery of electric vehicles. At the same time, it also uses servo motor output. The ...
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IPC IPC(8): B60T13/14B60T13/68B60T13/74B60T7/08
CPCB60T7/085B60T13/147B60T13/686B60T13/745B60T13/746
Inventor 王亚邓伟文
Owner 南京经纬达汽车科技有限公司