Download Auto Service Study Guide Name______________________

Auto Service Study Guide Starting & Charging Chapter #30 & 32 Pages 499­547 Name______________________ 21 Points Due Date_________ 1. The _________________ system uses battery power and an electric motor to crank the engine for starting. 2. The ____________ is the source of energy for the starting system. The ________________ switch allows the driver to control starter motor operation. 3. The __________________ is a high­current relay (electromagnetic switch) for connecting the battery to the starter motor. The initial “click” you hear just before cranking is the action of the solenoid. 4. The starter __________ produces the high­torque needed for turning the ring gear on the engine flywheel. 5. The starter motor uses repelling _________________ fields to cause the rotary motion to crank the engine. 6. The starter drive is made up of a small, ____________ gear and an ________________________ clutch that work together to mesh with the flywheel during cranking. The pinion gear is has few teeth and the flywheel it meshes with has over a hundred teeth. This gear reduction provides a gain in torque. 7. The ________________ _______________ switch (also known as the park/neutral switch) prevents cranking unless the shift selector is in park or neutral. A clutch safety switch is used on manual transmission cars. ~~~ 8. The _______________ system charges the battery & supplies current to all of the car’s electrical systems. 9. The _______________________ is the AC generator that uses engine rotary motion to produce electricity. 10. The _________________ regulator is an electronic device that controls the charging rate of the alternator. 11. The AC generator is powered by a drive _______ (serpentine or v) connected to the engine crankshaft pulley. 12. The alternator produces AC electricity inside, but is rectified to ______________ _______________ (DC) before it flows out through wiring to recharge the battery and run the vehicle electrical systems. 13. Generally speaking, alternators move ________________ fields past _______ of wire to generate power. 14. Inside of an alternator, the brushes carry a regulated amount of battery voltage through copper slip rings into the spinning field coil of the __________. Moving this electromagnetic field past the ____________ windings generates ac electricity. The ac is changed to dc by diodes in the rectifier bridge. 15. Charging system output is sensitive to ____________ temperature. The ________ is sometimes used to supplement or replace the conventional voltage regulator for more precise control the charging circuit. 16. A loose or slipping alternator drive ______ can cause low charging system output & lead to a dead battery.