International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 3, 2016
Available online at www.ijiere.com
International Journal of Innovative and Emerging
Research in Engineering
e-ISSN: 2394 - 3343
p-ISSN: 2394 - 5494
Combination of ABS and EBA
1
Sourabh Khapre, 2Manish Lilke and 3Parimal Pingale
1
B.E. Scholar, Department, SKN College of engineering, Pune, India,
B.E. Scholar, Department, SKN College of engineering, Pune, India,
3
B.E. Scholar, Department, SKN College of engineering, Pune, India,
2
ABSTRACT
This paper proposes to estimate and to compare the expected and the observed effectiveness of the Anti-lock
Braking System (ABS) and Emergency Brake Assist (EBA) in terms of reduction in injury accidents. Accident
avoidance system in a four wheeler is a cocktail of several technological marvels. The present review is a part
of research project entitled “Combination of Antilock Braking System and Emergency Brake Assist”. In this
paper we review the method used in combination of two breaking system. The project idea is to improve
safety parameters regarding to brakes. Combining ABS and EBA will apply more braking force more with
the help of Solenoid and Electro hydraulic thruster. Solenoid and Electro hydraulic thruster increases the
force applied on brakes in case of emergency.
Keywords: Anti-lock Braking System (ABS); Accident avoidance system; Emergency Brake Assist (EBA);
Solenoid; Hydraulic thrusters;
I. INTRODUCTION
Anti-lock braking system (ABS) is an automobile safety system that allows the wheels on a motor vehicle to maintain
tractive contact with the road surface according to driver inputs while braking, preventing the wheels from locking up
(ceasing rotation) and avoiding uncontrolled skidding.
ABS generally offers improved vehicle control and decreases stopping distances on dry and slippery surfaces for many
drivers; however, on loose surfaces like gravel or snow-covered pavement, ABS can significantly increase braking
distance, although still improving vehicle control.
The ABS controller knows that such a rapid deceleration is impossible, so it reduces the pressure to that brake until it
sees acceleration, then it increases the pressure until it sees the deceleration again. It can do this very quickly, before the
tire can actually significantly change speed. The result is that the tire slows down at the same rate as the car, with the
brakes keeping the tires very near the point at which they will start to lock up. This gives the system maximum braking
power.
In an emergency, many people do not depress the brake pedal hard enough. EBA senses an emergency braking situation
and helps the driver to reduce speed in the shortest distance possible.[5]
Figure 1. Introduction[4]
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 3, 2016
1.1. Need of emergency brake assist
Many accidents caused by ignoring right-of-way, driving on the wrong side of the road, inappropriate speed, and
insufficient distance from other vehicles and so on might have been prevented had the vehicles been able to brake faster.
In comparison, let’s look at a car with a brake assist system. As before, the brakes are not applied with sufficient
force. Based on the speed and force with which the brake pedal is pressed, the brake assist system detects an emergency.
The brake assist system increases the brake pressure until the ABS regulation intervenes to prevent the wheels from
locking. This way the greatest possible braking effect can be achieved and the brake path can be shortened
significantly.[5]
Figure 2. Need of emergency brake assist [5]
II .WORKING
When the brake is pressed beyond the ABS limit the EBA-limit switch is operated which will actuate the
solenoid mounted on the master cylinder of the EBA system. The master cylinder injects high pressure oil into the brake
caliper, this will close the caliper fully thereby applying emergency brake and preventing the head on collision with the
front vehicle.
Thus it is seen that the development of the emergency brake assist system will largely depend upon the design
and development of the active type of brake actuator mechanism which should have the following properties:
1. Fast actuation of the brake system as reaction time is very low
2. Large braking force development to bring about the emergency braking of the vehicle
Hence the design and development of an active electro- hydraulic thruster for application in emergency brake assist is
important part.
Figure 3. Working
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International Journal of Innovative and Emerging Research in Engineering
Volume 3, Issue 3, 2016
Here the motor transmits the power to the shaft via open v-belt drive, motor is variable speed so that we can
have different vehicle speeds, and the speed is regulated using electronic speed regulator. The mechanical counter is used
to count the number of rotations of the wheel after EBA is applied thus the distance of braking is determined.[4]
III. CONCLUSIONS
Finally we conclude that one can reduce the stopping distance by implementing the Emergency brake assist with antilock braking system and hence accidents are decreased.[1]
Acknowledgment
The authors like to warmly thank Prof, V. P. Sawant (SKNCOE) for his guidance and remarks. Also Mr., Vasunde for
helping us in designing components for our project.
REFERENCES
[1] Active Safety Braking System by Vallamkondu Arun Kumar, Setty Kalyan( TIFAC-CORE, VIT University,
Vellore-632014), Email: settykalyan@gmail.com
[2] An Antilock-Braking Systems (ABS) Control by Ayman A. Aly, El-Shafei Zeidan, Ahmed Hamed, Farhan
Salem(Department of Mechanical Engineering, Faculty of Engineering, Taif University, Al-Haweiah, Saudi Arabia )
[3] Real Word Safety Benefits of Brake Assistance Systems by Joerge J Breuer, Andreas Faulhaber, Peter Frank and
Stefan Gleissner(Daimler Chrysler AG Mercedes Car Group, Germany, paper number 07-0103)
[4] http://mechanical.howstuffworks.com/
[5] Self study program 264, The Brake Assist System (Design and Function), VOLKSWAGEN AG, Wolfsburg.
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