Rezumat

Toate autovehiculele rutiere sunt echipate cu un sistem de frnare care este adaptat n funcie de tipul i destinaia acestuia, avnd rolul de a micora viteza de deplasare sau de a opri autovehiculul ntr-un timp ct mai scurt posibil. Acesta prezint o importan deosebit pentru desfurarea n condiii de siguran a circulaiei. Constituit din cinci capitole, proiectul prezint evoluia sistemelor de frnare pna n prezent. Totui, accentul se pune pe condiiile tehnice privitoare la verificarea performanei i eficacitaii sistemului de frnare al autovehiculelor prin ncercarea acestuia. Capitolul 2 prezint consideraii generale privind ncercarea autovehiculelor, cuprinznd noiuni i definiii, clasificarea ncercrilor, unde sunt prezentate ncercrile pe standul de prob dar i ncercrile de drum.Capitolul 3 prezint clasificarea, condiiile impuse i construcia sistemelor de frnare. Tot aici sunt prezentate i mecanismele de acionare ale sistemului de frnare i sistemele de frnare suplimentare.n capitolul 4 sunt prezentate cercetrile experimentale cuprinznd ncercrile sistemului de frnare al unui autovehicul pe standul de prob unde s-a utilizat dou perechi de anvelope, noi i uzate la presiuni de lucru diferite. Tot n capitolul 4 sunt ncadrate i ncercri de drum care au la baz scoaterea n eviden a performanelor acestui sistem.Rezultatele acestor ncercri au fost surprinztoare, privind evoluia performanelor sistemului de frnare al autovehiculului ncercat n raport cu variaia presiunii din anvelope.Ultimul capitol prezint contribuii personale utilizate pentru desfurarea proiectului, concluziile care au rezultat n urma elaborrii studiului, sugernd totodat i cteva direcii viitoare de dezvoltare.

All road vehicles are equipped with a braking system that is tailored depending on the type and destination, serving to reduce speed or stop the car in the shortest possible time. It is of particular importance for the safe conduct of the movement.Made up of five chapters, the project presents the braking systems until now. However, the emphasis is on the technical conditions for checking the brake performance and efficiency of its vehicles by testing.Chapter 2 presents general considerations concerning the testing of vehicles, including concepts and definitions, classification tests, which are presented on the stand of sample tests and road tests.Chapter 3 presents the classification, construction conditions and braking systems. Here are presented and rod drive mechanisms of the braking system and additional braking systems.In chapter 4 experimental research including brake tests of a sample vehicle bench where he used two sets of tires, new and used at different working pressures.Also in Chapter 4 are classified also road tests based on emphasizing the performance of this system.The test results were surprising, on the development of vehicle brake performance tried the variation of tire pressure.The last chapter presents the personal contributions used for the project, the conclusions that emerged from the work on the study, while suggesting some future directions of development.