2. Fungsi Utama
• The main purpose of the starter motor is to
provide initial power to crank the engine to
start it up when the ignition switch is
turned on.
3. Fungsi Komponen
• Battery : energy resource
• Solenoid: connect the current from the
battery to the starter to reduce voltage
drop that would occur by going through the
ignition switch.
• Starter: uses electrical energy to spin the
flywheel which turns the crankcase and
induces combustion.
4. Prinsip Motor
• DC motors interaction of magnetic fields
to convert electrical energy to mechanical
energy
• Current is applied to field and armature
• Conductor tends to move from weak
magnetic field to strong magnetic field.
• For armature to continue rotating, the
current flow must be reversed.
5. Arus Konductor
• Conductor has
magnetic flux
lines around it
• Opposes north
and south fields
which causes
loop of wire to
turn.
6. Magnet
• Has north and
south pole.
• Magnetic lines of
force move from
north to south
pole.
Widjanarko, TM UNNES
7. Konduktor dlm Medan Magnet
• As current travels
through conductor
and fields,
conductor moves.
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8. • Flux lines
always tend
to want to be
straight
• Fields act on
each other
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32. Kumparan Medan
• Iron Core & Windings concentrate magnetic field
• Fields have north and south pole based on
direction windings are wound around pole shoes
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33. 3 Methods of Connecting Fields
• Series Wound
– Maximum torque
when starts
• Shunt Wound
– Used in smaller
motors
• Compound
Wound
– Constant speed
Page C143
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