Modern Automotive - PowerPoint PPT Presentation

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Modern Automotive

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by Russell Krick Publisher The Goodheart-Willcox Co., Inc. Tinley Park, Illinois Sound System Components: AM/FM radio tape player amplifier sub-woofer speaker CD ... – PowerPoint PPT presentation

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Title: Modern Automotive


1
PowerPoint for
Modern Automotive Technology
by Russell Krick
2
Chapter 37
Sound Systems and Power Accessories
3
Sound System
  • Components
  • AM/FM radio
  • tape player
  • amplifier
  • sub-woofer speaker
  • CD player
  • power antenna

4
AM Radio
  • AM signals vary in amplitude (strength)
  • Frequency range 5301610 kilohertz (kHz)
  • The signal is reflected off the ionosphere,
    giving it long range

5
FM Radio
  • FM signals vary in frequency
  • Frequency 88108 megahertz (MHz)
  • The signal is not reflected off the ionosphere,
    limiting its range

6
AM versus FM Signals
7
CD Players
  • Compact disc players
  • Use a plastic disc
  • Play music digitally
  • Locations
  • in dash
  • in trunk

8
Radio Noise
  • Interference or static (popping, clicking)
  • Causes
  • faulty antenna
  • open or shorted noise suppressor (capacitor)
  • faulty spark plug wire
  • faulty radio
  • distant stations

9
Radio Noise
  • A noise that changes with engine speed may be
    caused by faulty ignition or charging systems
  • Noise suppressors are capacitors that absorb
    voltage fluctuations, smoothing the current
  • found at the alternator, ignition coil,
    distributor, or blower motor

10
Power Seats
  • Components
  • fuses or circuit breakers
  • switches
  • electric motor and drive assembly
  • related wiring
  • When activated by a switch, the reversible dc
    motors operate a gear mechanism, positioning the
    seat

11
Power Seat
Headrest
Backcushion
Rearverticalmotor
  • Seat removal may be needed to service the seat
    motors

Lumbarmotor
Seatcushion
Power seat switches
Seat track
Slide motor
12
Power Seat
  • Each motor operates differentseat adjustments

13
Power Windows
  • Components
  • control switches
  • reversible electric motor
  • circuit breaker
  • fuse
  • related wiring
  • Operate some or all of the cars side windows
    electrically

14
Power Windows
  • A motor and regulator mechanism is located in
    each door
  • A gearbox converts the motors rotary motion to
    linear motion to drive the window up and down
  • A circuit breaker protects the motor if the
    switch is held on one position too long or if
    window is frozen in place

15
Motor and Regulator
16
Reminder System
  • Warning or chime system
  • Warns driver of several conditions
  • seat belts are not fastened, engine on
  • keys in ignition, engine off
  • headlamps on, engine off

17
Reminder System
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