Mitsubishi MOTORS Eclipse 1997, Service Manual

Page: 364 / 540

Charging, System
ENGINE ELECTRICAL
and
GENERAL INFORMATION
The charging system uses generator output to keep
the battery charged at a constant level under various
electrical loads.
GENERATOR SPECIFICATIONS
Items
Engine (A/T) Engine (A/T)
Battery voltage sensing sensing Battery voltage sensing
Identification No.
Part No.
Rated output
Voltage regulator
3392
Electronic built-in type
3
Electronic built-in type
0997
12190
Electronic built-in type
About
Time
Operation
Rotation of the excited field coil generates AC voltage in
the
This alternating current. is then rectified through diodes, to
procedure DC voltage. Refer to the waveform
the
illustration at left.
The average output voltage fluctuates, slightly with the
generator load condition..
.
When the ignition switch is turned on, current flows
in the field coil, causing initial excitation of the field
coil.
When the
coil begins to generate power after
the engine is started, the field coil is excited by
the output current of the coil.
The generator output voltage rises as field current
increases and falls as field current decreases. When
the battery voltage (generator terminal voltage)
reaches a regulated voltage of the
field current is cut off. When the battery voltage
drops below the,
voltage, the
regulator regulates the output voltage to a constant
level by controlling the field current.
In addition, when the field current is constant, the.
generator output voltage rises as the engine speed
increases.
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