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AIR CONDITIONING
27
CONSTRUCTION:
A magnetic clutch consists of a stator, rotor with
pulley, and pressure plate to engage the drive
pulley and compressor magnetically. The stator is
fixed on the compressor housing, and the
pressure plate is attached to the compressor
shaft. Two ball bearings are used between the
inner surface of the rotor and the front housing of
the compressor
OPERATION:
Whenever the engine is operating, the pulley is
rotating since it is connected to the crankshaft by
a belt, but the compressor does not operate until
the clutch is energized. When the air conditioning
system is on, the amplifier supplies current to the
stator coil. The electromagnet attracts the
pressure plate and pulls the plate against the
friction facings on the pulley. The friction between
the facing and plate causes the clutch assembly
to rotate as a unit, and drive the compressor.
NOTE:
For
compressor
and F.I.C.D. details refer engine
group.