Active and Passive Restraints (cont'd.) Air bag parts –Air bag module consists of air bag and inflator –Air bag system also includes sensors, ignition device, an explosive propellant Inside sensors are called safing sensors Sophisticated electronic control module Squibs used in each air bag ignite the bag –Smart restraint air bags Latest air bag systems Multistage ABS can inflate an air bag in stages
Active and Passive Restraints (cont'd.) Air bag deployment –Process takes about 0.1 seconds –Side air bags deploy individually –Smart air bag system uses various inputs –OSS determines where passengers are located –Newer systems consider vehicular forces –Radar-based systems sense when a vehicle will not be able to stop in time
Security Systems (cont’d.) Theft-warning systems –Passive and active Transponder passive antitheft systems –Systems with an encoded transponder ignition key Antitheft system electrical operation –Operate with different permission codes Transponder key replacement –Manufacturers have different processes All are expensive
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