AUTOMOTIVE STARTING SYSTEMS

DC Starter

Starting System Principles

Uses battery power

AUTOMOTIVE STARTING SYSTEMS

Starter Circuit

Electric DC Motor (starter motor)

Solenoid or Relay

Gear Drive Switches & Controls

Wiring

Testing

Removing Starter

STARTING SYSTEM PARTS

Battery

Ignition switch

Solenoid

Starting motor

STARTER CIRCUIT

Battery / Cables

Magnetic Switches

Solenoids

Pull in Windings

Hold in Windings

Pinion Gear

Starter Relay

Starter Circuit Simplified

Starter Solenoid Functions

* Close battery to starter connection

* Push pinion gear into fly wheel

* Bypass the resistance wire of ignition circuit

Move the starter drive into mesh w. flywheel

Complete the starter circuit

Starting System Action

Energizes solenoid

Current flows to Solenoid

Turn key

Connects current to starter motor

Motor turns flywheel

1

Turns starter

Moves pinion forward

Starter System Action cont.

Starter Motor Fundamentals

Converts Electrical Energy

From Battery

Into

Mechanical Energy TORQUE

DC MOTOR

Basic Components

Housings and End Frames

Pole Shoes (magnets)

Field Coils

(windings) x 3 or 4

Armature (spins)

Commutator

Brushes x4

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