Text of A Seminar on AUTOMOBILE SAFETY. INTRODUCTION Automobile Industry is undergoing a BIG TRANSFORMATION...
A Seminar on AUTOMOBILE SAFETY
INTRODUCTION Automobile Industry is undergoing a BIG TRANSFORMATION never seen before. Automobile Industry is undergoing a BIG TRANSFORMATION never seen before. Today CARs are not only used for personal Transport but they are ENCOMPASSED with Entertainment that vies with the fedility of your HOME THEATRE Seating arrangement more comfortable than your RECLINER SAFETY FEATURES making your car safer than a TANK
Globally car companies Spend nearly $36 billon annually for influencing new TECHNOLOGIES into their cars.Globally car companies Spend nearly $36 billon annually for influencing new TECHNOLOGIES into their cars. Some of the big advancement in Automotive Industry in last 10years have come in a area of SAFETY.
In addition to Telematics based Services like Digital Satellite Radio In car E-mail GPS systems Recent Advancement in Braking Technology have led to Shorter stopping distance Increased Control in PANIC situation More control on CURVED turns
Air Bags Whats the main function of the System? Material of Airbags? History
Actual Working Airbag Before CollisionAirbag After Collision
Inflation unit How does it INFLATES?
Effectiveness This system has proven its effectiveness In frontal crashes reduction in d rivers death reduced by nearly 14% Passenger side airbags reducing death by nearly 11% NHTSA estimated reduction in risk by nearly 85% with the combination of seat belt and airbags compared than only seatbelt i.e60% Car Model Head Injury Risk Airbag Airbag No Airbag No Airbag Holden Commodore Holden Commodore 2848 Toyota Camry 2044 Mitsubishi Magna 627 Ford Falcon 14 N. A. This are some crash results which give the effectiveness of the system
Different types of Airbags DRIVERS SIDE AIRBAG
PASSENGER AIR BAG Curtain Airbags
Anti-lock Braking System Introduction? Advancement in the system? Working?
Advancement in the system?
How Does the system Works?
Working Conventional Braking Whole process is controlled by driver applied break paddle pressure ; ABS Braking Electric Sensors monitor the wheel speed ABS microprocessor Compares the wheel speed Control valve is energized.
Effectiveness ABS on a test track
Advantages: Achives the Shortest Stopping distance Better chance on Steering around obstacle Reduced risk of skidding Disadvantages : Precautions should be taken while driving Proved less effective on gravel road or road compacted by snow
Traction Control Next Generation ABS Uses ABS as a Building block. Can be is a combination of ABS & Engine control
Mainly the system has to control some or all conditions Retard or Suppress the spark to one or more cylinders Retard fuel supply to one or main cylinder Break one or more wheel Close the throttle, if the vehicle is fitted by wire throttle
Electronic Stability Control
Main components of the system A) active wheel speed sensors; B) steering angle sensor; C) Yaw rate sensor D) attached electronic control unit (ECU) E) motor; F) pressure sensor, G) hydraulic unit.
Some important ECS definitions ESC augments vehicle directional stability by applying and adjusting the vehicle brakes individually to induce correcting yaw torques to the vehicle. ESC is a computer-controlled system, which uses a close-loop algorithm to limit under steer and over steer of the vehicle when appropriate
Case Study A S-Class Mercedes sedan testing Bosch's ESP system