Braking system with electronic braking assisting function

Abstract

The invention relates to a braking system with an electronic braking assisting function, comprising an electronic vacuum booster, an electronic vacuum booster controller, an original automobile ABS (anti-skid braking system) and braking cylinders. The electronic vacuum booster comprises an electromagnet core, an electromagnet coil and an electrical bushing which are arranged in a vacuum valve, wherein atomspheric valves are arranged in the electromagnet core and the electrical bushing and in close contact with a rubber valve seat, and a gap is left between the electrical bushing and the rubber valve seat; the electronic vacuum booster controller is provided with the braking pressure threshold value, the emergent braking assisting mode work time threshold value and the actual braking pressure change rate threshold value in advance and is used for receiving the expectant braking pressure signal, the actual braking pressure signal and the driver braking signal sent out by a driving assisting system from an automobile CAN (controller area network) bus, comparing all the received signals with all the threshold values, judging and outputting current to the electromagnet coil; the original automobile ABS is connected with a braking main cylinder of the electronic vacuum booster through a pipe; and all the braking cylinders are connected with the original automobile ABS through pipes.The invention can be widely applied to the driving assisting system such as the adaptive cruise control system, the stop and go cruise system, the collision avoidance system, the emergent braking assisting system and the like.

Description

technical field [0001] The invention relates to an automobile braking system, in particular to a braking system with electronic auxiliary braking function. Background technique [0002] With the increasing popularization of automobiles and the increase of road traffic, traffic safety problems are becoming more and more serious. To this end, various automakers are working on driver assistance systems such as adaptive cruise control (ACC, Adaptive Cruise Control), stop-and-go cruise control (S&G, Stop & Go) and active collision avoidance systems (CAS, Collision Avoidance System). development. The common feature of these driving assistance systems is that they all have an active braking function, so that many dangerous situations can be avoided. In order to make the car have active braking function, it must have a set of auxiliary braking device that can be electronically controlled. One type of auxiliary braking device that is widely used at present is the vacuum-assisted a...

AI Technical Summary

Problems solved by technology

However, the above-mentioned methods all require the additional installation of a diaphragm displacement sensor, resulting in an increase in system cost, and require high technical requirements for air tightness and initial position correction during the installation of the diaphragm displacement sensor

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