Independent booster pump distributed autonomous braking system with shaft pressure balance

Abstract

The invention relates to the technical field of automobile autonomous braking systems, in particular to an independent booster pump distributed autonomous braking system with a shaft pressure balance.The independent booster pump distributed autonomous braking system comprises a power source and a brake controller, and also comprises at least three plunger pumps which are separately and electrically connected to the brake controller, wherein all of the plunger pumps are equipped with oil cans; the plunger pumps are separately connected to wheel brakes through brake pipes in a one-to-one correspondence manner; a pressure relief pipe is arranged between each of the wheel brakes and the corresponding oil can; each of the pressure relief pipes is provided with a normally closed solenoid valve;the normally closed solenoid valves are separately and electrically connected to the brake controllers; each of the plunger pumps forms a brake circuit with the corresponding wheel brake and the corresponding normally closed solenoid valve; the two wheel brakes at two ends of a same shaft communicate with each other through a corresponding brake pipe; normally open solenoid valves are arranged onthe corresponding brake pipes; and the normally open solenoid valves are electrically connected to the brake controllers. The independent booster pump distributed autonomous braking system with the shaft pressure balance has the advantages of simple structure without the need for a manual braking device, high braking reliability, good failure protection ability, flexible brake force control and high control pressure accuracy.

Description

technical field [0001] The invention relates to the technical field of vehicle braking control systems, in particular to an independent booster pump distributed autonomous braking system with axial pressure equalization. Background technique [0002] Automobile braking system is closely related to automobile driving safety. In the hydraulic braking system of traditional automobiles, the driver applies braking pressure to the wheel cylinders of each wheel brake by depressing the brake pedal, so as to achieve braking and decelerate the vehicle. Smart car systems such as advanced driver assistance systems (ADAS) and automated driving systems (ADS) require braking systems that can autonomously brake the vehicle, that is, apply the brakes to some or all of the wheels without depressing the brake pedal. [0003] At present, most of the brake systems that can implement autonomous braking use electric power assist, and retain brake control devices such as brake pedals. For unmanne...

AI Technical Summary

Problems solved by technology

In most driving braking conditions, the two front wheels and the two rear wheels require the same braking pressure. In order to realize this function, it will increase the difficulty of control, and the effect is mostly unsatisfactory.

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