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Comparison Of Performance In Vehicle Braking With Active And Inactive ABS System
Technical Paper
2021-36-0072
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE BRASIL 2021 Web Forum
Language:
English
Abstract
The invention of the wheel was an important milestone in the history of mankind. With it was possible to significantly reduce the friction between an object and the ground, requiring less force to move them and making it possible to transport items of interest. The use of the wheel in vehicles brought great advantages, however, it became necessary to control the speed, to avoid accidents with the environment around it. As a result, there was a need for the development of brake systems. The main function of the brake system is the transmission of the braking torque to the wheels, through the conversion of kinetic energy into heat. However, conventional brake systems had a serious problem with the car's ability to control while braking. The ability to control the vehicle, known as handling, is dependent on the adhesion between the tire and the ground. Driving loss occurs when the wheels lock during braking. To solve this problem, the Antilock Brake System (ABS) was created, an active safety system that is implanted on the brake system and its main objective is to prevent the wheels from locking. In this way, it allows the driver to perform maneuvers during braking and stop the vehicle at shorter distances. This paper shows the main brake system configurations applied to vehicles available in the market and its interaction with the ABS system. During an emergency, the natural reaction of the driver is pressing the brake pedal with the greatest possible intensity. The pressure generated in the brake fluid is transmitted to the brakes of the wheels, causing, in most cases, locking of the wheels, causing loss of adhesion and a significant increase in the slip of the tires. The ABS system operates in such situations modulating the pressure acting in the brake system so that the degree of slip does not exceed the ideal operating range. Thus, the main objective, through performance tests, is to demonstrate the importance of implementation of the ABS system in vehicles. The tests were conducted using a vehicle with the ABS system active and inactive and data were collected regarding the braking distance. Through these data were possible to make comparisons to determine the influence of ABS during the occurrence of braking.
Authors
Topic
Citation
Fiorentin, T. and De Borba, T., "Comparison Of Performance In Vehicle Braking With Active And Inactive ABS System," SAE Technical Paper 2021-36-0072, 2022, https://doi.org/10.4271/2021-36-0072.Also In
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