Abstract

The state of a vehicle braking system is one of the key factors determining the safety of the driver, passengers and other road users. During operation of a vehicle, the elements of its braking system undergo the process of wear and they are exposed to damage. Deterioration of the braking system efficiency has a direct impact on the collision speed. Thus, diagnosing a braking system during a vehicle operation is of key importance. Therefore, the authors of this article have undertaken the task to identify the influence of the state of a braking system particular element on the collision speed and kinetic energy of the impact. The obtained results of simulation calculations have proven a significant role of a braking system diagnosing in elimination of vehicles whose braking systems do not function properly as using inefficient brakes poses a significant threat to road traffic users and vehicles.

Highlights

  • Road traffic involves a risk of accidents, collisions and vehicle failures

  • Failures which were found in post-accident vehicle technical state diagnosing included lighting, tires and braking system

  • The most important ones were formulated in regulations R13 or R13-H ECE as well as in the EU directive 98/12/WE [4]

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Summary

Introduction

Road traffic involves a risk of accidents, collisions and vehicle failures. Failures which were found in post-accident vehicle technical state diagnosing included lighting, tires and braking system. They account for 14.9 % of all the failures found in the diagnosed vehicles. There are kinds of failures reported for vehicles which were involved in accidents in 2017 (http://statystyka.policja.pl). That, dangerous situations involve the necessity to brake immediately. To perform this task, a driver needs to use the vehicle braking system. A braking system belongs to the most important structural systems of a vehicle and, it needs to meet several requirements. The most important ones were formulated in regulations R13 or R13-H ECE as well as in the EU directive 98/12/WE [4]

Braking system of a vehicle
Design of two-circuit braking system
Design requirements for braking systems
Forces acting on the vehicle while braking
Case study – own research
Findings
Conclusions

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