Automotive Service - School District of · PDF fileAutomotive Service 6. The ... _____ clutch...

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Automotive Service Modern Auto Tech Study Guide Chapters 30 & 32 Pages 499 547 Starting & Charging Systems 21 Points Starter Motor Alternator

Transcript of Automotive Service - School District of · PDF fileAutomotive Service 6. The ... _____ clutch...

Page 1: Automotive Service - School District of · PDF fileAutomotive Service 6. The ... _____ clutch that work together to mesh with the flywheel during ... Moving this electromagnetic field

Automotive Service Modern Auto Tech Study Guide Chapters 30 & 32 Pages 499 ­ 547 Starting & Charging Systems 21 Points 

Starter Motor 

Alternator

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Automotive Service 1.  The _________________ system uses battery power and an electric motor 

to crank the engine for starting. 

Charging Starting Ignition

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Automotive Service 2.  The ____________ is the source of energy for the starting system. 

The _____________ switch allows the driver to control starter motor operation. 

Battery, Ignition Battery, Brake Battery, Park/Neutral

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Automotive Service 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. 

Cellophane Solenoid Fuel Pump

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Automotive Service 4.  The starter __________ produces the high­torque needed for turning the 

ring gear on the engine flywheel. 

Relay Solenoid Motor

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Automotive Service 5.  The starter motor uses repelling _________________ fields to cause the 

rotary motion to crank the engine. 

Static Magnetic Dynamic

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Automotive Service 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 just a few teeth (10) and the flywheel it meshes with has over a hundred teeth. This gear reduction provides a gain in torque. 

Pinion, Overrunning Bevel, One­Way Hypoid, Roller

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Automotive Service 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. 

Starting Safety Brake Light Anti­Theft

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Automotive Service 8.  The _______________ system charges the battery & supplies current to all of 

the car’s electrical systems. 

~~~ 

Charging Starting Ignition

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Automotive Service 9.  The _______________________ is the AC generator that uses engine 

rotary motion to produce electricity. 

Alternator Turbocharger Powertrain Control Module

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Automotive Service 10. The _________________ regulator is an electronic device that 

controls the charging rate of the alternator.

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Automotive Service 11. The AC generator is powered by a drive _______ (serpentine or v) 

connected to the engine crankshaft pulley. 

Smelt Welt Belt

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Automotive Service 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. 

Direct Current Eddy Current House Current

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Automotive Service 13. Generally speaking, alternators move __________ fields past ____ of wire 

to generate power…This is called electromagnetic induction 

Plowed, Fences Magnetic, Coils Force, Mountains

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Automotive Service 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. 

Rotor Rotates 

Stator is Stationary 

Stator, Rotor Rotor, Stator Armature, Rotor

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Automotive Service 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. 

Battery, PCM Coolant, EGR Ambient, Trunk  Battery Temperature Sensor

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Automotive Service 16. A loose or slipping alternator drive ______ can cause low charging system 

output & lead to a dead battery.  (also known as accessory drive belt) 

Train Belt Pinion

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Automotive Service 

Accessory Drive Belt 

Tensioner 

Balancer Alternator