SLIDE đào tạo hệ THỐNG túi KHÍ HÃNG KIA

Effect of Air Bag• Decrease in Fatality when Safety System is used Data published by NHTSA, 1999 • When only using Seat Belt: 45% Decrease • When only using Frontal Air Bag : 14% Decreas

SRS AIR BAG

(Supplemental Restraint System)

What is SRS - Air Bag

The SRS Air bag System is a device that reduces head and chest injuries to thedriver and passengers by inflating an air bag installed in the steering wheel or the instrument panel when such a collision occurs, supplementing the function

of the seat belt Thus, the SRS Air bag System is the supplements the

restraining and protective functions of the seat belt For that reason the name of

the system was chosen as the acronym of Supplemental Restraint System

Effect of Air Bag

• Decrease in Fatality when Safety System is used (Data published by NHTSA, 1999)

• When only using Seat Belt: 45% Decrease

• When only using Frontal Air Bag : 14% Decrease

• When using Seat Belt + Frontal Air Bag : 50% Decrease

History Of Air Bag

1998: Transportation Equity Act for the 21st Century enacted by Congress [TEA

21] - for advanced air bags

1993: First of 23 deaths over three years caused by passenger air bags: Diana

Zhang, 6, of Canton, Ohio

Car companies required to begin phasing in passenger air bags in cars and light trucks

1991: President Bush signs a law requiring an air-bag phase-in starting the '94 mo

del year Deadlines for passenger air bags: all 1998 model year cars; all 199

9 model year trucks [ISTEA :: Intermodal Surface Transportation Efficiency Act]

1990: First report of a driver being killed by an air bag: 64-year-old women suffers

fatal chest injuries from air bag

1989: Ford announces driver air bags will be standard equipment in nine car lines

1988: In a dramatic turnaround from CEO Iacocca's previous anti-bag position,

Chrysler becomes the first U.S automaker to install driver air bags as standard equipment in all its domestic-made cars

History Of Air Bag

1987: NHTSA lets automakers use driver air bags to meet passive-restraint

requirements until '94 model year

1986: NHTSA allows automakers to meet passive-restraint requirements through

the 1990 model year with only driver air bags The agency cites concerns about the dangers of passenger air bags

1984: Now Chrysler CEO, Iacocca lambastes air bags as example of "solution

being worse than the problem."

1983: The Supreme Court rules against the Reagan administration and directs

NHTSA to review the case for air bags

1981: Under the anti-regulatory Reagan administration, NHTSA announces one-y

ear delay of passive-restraint rule, proposes that it be rescinded altogether [Transportation Secy: Elizabeth Dole]

NHTSA cancels passive-restraint standard, citing uncertainty about public acceptance and use of automatic safety belts

History Of Air Bag

1979: General Accounting Office warns that out-of-position occupants are in

danger from air bags

General Motors notifies NHTSA it will not offer optional passenger air bags

on 1981 models as planned because of "potential for risk of injury to unrestrained small children who would otherwise survive an impact without significant harm." NHTSA chief Joan Claybrook insists "the trade-off in terms of saving thousands of lives clearly outweighs these extraordinary and infrequent risks."

1977: Carter administration Transportation Secretary Brock Adams announces

that all new cars sold in the USA must have front air bags or passive safety belts that fasten without any effort by the driver or passenger by the 1984 model year

1976: Transportation Secretary William Coleman says air bags in all cars would

save about 12,000 lives each year Scraps passive-restraint requirement when automakers pledge to install some air bags voluntarily

History Of Air Bag

1975: Volvo report says eight of 24 pigs used to simulate effect of air bags on

unrestrained children were killed by the force of the air bags All but three pigs were seriously injured

1974: GM starts making some dual air-bag-equipped Cadillacs, Oldsmobiles an

d Buicks, hoping to sell 100,000 a year Drops effort three years later after selling only 10,000

1973: General Motors manufactures 1,000 Chevrolets equipped with

experimental air bags and provides them to fleet customers for testing

Infant, unrestrained on passenger seat of one of the experimental Chevrolets, is killed when a passenger bag deploys in a wreck GM considers that the first air-bag fatality

An Oldsmobile Toronado, first car with a passenger air bag intended for sale, rolls off assembly line

History Of Air Bag

1971: Ford builds experimental air bag fleet

NHTSA delays passive-restraint mandate until 1976 after Henry Ford II, Ford President Lee Iacocca lobby President Nixon

1970: National Highway Traffic Safety Administration (NHTSA) orders passive

restraints by 1974 model year

1969: Nixon administration proposes passive restraints in cars to protect unbelted

occupants

General Motors warns federal safety officials that children too close to an inflating air bag could be "severely injured or killed."

1966: President Johnson signs the National Traffic and Motor Vehicle Safety Act,

which requires the government to come up with safety standards for new vehicles Previously, auto safety had been largely unregulated

Air bag System Category

Single Sensor Type (Intergrated Type with sensor in Air bag control module)

Air bag System Category

Multi-Sensor Type (Front sensor Type)

Basic Structure

Basic Principle

105 mSec ~ 150 mSec Vent Gas (Bag Deflation)

Airbag System Completed

20 mSe c

35 mSe c

40 mSe c

Bag Deploying

Ignite the Inflator

Full Deployment of the Bag

Produce Nitrogen Gas to Inflate the Bag

Protect the Occupants

3 mSec Crash

Crash Sensing

Make decision deployment or undeployment

DAB (Driver Air Bag)

Airbag-Cover Nuts

3

1 2

4 5

1

2 3

4

DAB (Driver Air Bag)