Analysis of the process of vehicle stopping with the use of emergency braking system

Road traffic poses high risk to human health and life and material objects. In an emergency situation, it is crucial for a driver to be able to reduce speed of the vehicle and pull up as quickly as possible. The braking distance of a vehicle depends on many factors including the surface condition and the braking system efficiency. During maintenance of a vehicle, the elements of a braking system undergo wear processes and failures. Therefore, producers equip vehicles with emergency braking systems, which can stop a car in the event of the main braking system failure. Cars in Poland are of diversified age therefore many different design solutions can be found. In this study, the problems connected with stopping a car in case of the brakes failure has been discussed according to the type of brake actuation system. Simulation calculations were performed with the use of computer tool V-SIM4, and the obtained results allow to find a braking design with the highest efficiency in terms of braking distance and maintenance of the vehicle direction in case of the main system failure. The research results make it possible to formulate a general conclusion that structures of emergency braking systems should be used in the following order: fully doubled, LL, HI whereas systems TT and X should be replaced by systems LL or possibly HI.

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Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.