CHAPTER Charging System 19 Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman.

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CHAPTER Charging System 19 Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman AUTOMOTIVE ELECTRICAL AND ENGINE PERFORMANCE

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.1 A typical alternator on a Chevrolet V-8 engine.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.2 The end frame toward the drive belt is called the drive-end housing and the rear section is called the slip-ring-end housing.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.3 An OAP on a Chevrolet Corvette alternator.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.4 An exploded view of an overrunning alternator pulley showing all of the internal parts.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.5 A special tool is needed to remove and install overrunning alternator pulleys or dampeners.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.6 A cutaway of an alternator, showing the rotor and cooling fan that is used to force air through the unit to remove the heat created when it is charging the battery and supplying electrical power for the vehicle.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.7 Rotor assembly of a typical alternator. Current through the slip rings causes the “fingers” of the rotor to become alternating north and south magnetic poles.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.8 An exploded view of a typical alternator showing all of its internal parts including the stator windings.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure 19.9 A rectifier usually includes six diodes in one assembly and is used to rectify AC voltage from the stator windings into DC voltage suitable for use by the battery and electrical devices in the vehicle.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure Magnetic lines of force cutting across a conductor induce a voltage and current in the conductor.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure A sine wave (shaped like the letter S on its side) voltage curve is created by one revolution of a winding as it rotates in a magnetic field.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure When three windings (A, B, and C) are present in a stator, the resulting current generation is represented by the three sine waves.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure Wye-connected stator winding.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure As the magnetic field, created in the rotor, cuts across the windings of the stator, a current is induced.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure Delta-connected stator winding.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure A stator assembly with six, rather than the normal three, windings.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure Typical voltage regulator range.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure A typical electronic voltage regulator with the cover removed showing the circuits inside.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure Typical General Motors SI-style alternator with an integral voltage regulator.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure A coolant-cooled alternator showing the hose connections where coolant from the engine flows through the rear frame of the alternator.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure A Hall-effect current sensor attached to the positive battery cable is used as part of the EPM system.

Copyright © 2016 by Pearson Education, Inc. All Rights Reserved Automotive Electrical and Engine Performance, 7e James D. Halderman Figure The amount of time current is flowing through the field (rotor) determines the alternator output.