The starter motor uses electrical energy from a battery to spin the flywheel and crank the engine to start it. The solenoid connects the battery current to the starter motor to provide power. The starter motor works on the principle of electromagnetic induction, where a current in the armature coil within a magnetic field produces torque to turn the armature and crank the engine. Key components include the battery, solenoid, starter motor, and overrunning clutch which engages the starter motor with the flywheel only during cranking and disengages when the engine starts.
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.
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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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