Baudoulin 4M11G User Manual

Maintenance Manual of 4M11 Series Diesel Engine For Land Power Generators
105
打开车辆电源开关将测试灯连接在发电机的B+和E
（负极）端
测试灯是否亮
将接E端转接发电机D+端
测试灯是否亮
是
是
起动发动机
测试灯是否亮
发电机无故障
否
发电机故障
是
是
否
说明发电机的B+端没有电压，同蓄
电池的正极端之间的导线有故障
说明发电机的D+端的内部电器
线路出现问题
否
Figure 4-73 Flowchart for Judgment of Alternator Malfunction
②Malfunction diagnosis and troubleshooting of charging system
a) Charging failure
Malfunction 1: Charging failure
Vehicle symptom Fault Detection Solution
The charging indicator
lamp fails to turn on after
turn-on of key switch.
Check charging indicator
lamp.
Check the excitation circuit
for presence of open-circuit.
Check alternator indicator lamp for presence of
voltage to ground. If not, replace indicator lamp or
check circuit.
If yes, it indicates that the alternator regulator or rotor
is malfunctioned. Repair or replace alternator.
The charging indicator
lamp fails to turn off
during idling of engine
and turns off during
high-speed running of
engine.
Low power of indicator lamp
or loose parallel excitation
resistor.
Low idling speed of engine.
Use recommended 2~6W lamp bulb or repair circuit.
Adjust idling speed of the engine.
Check whether the voltage to
ground of the alternator
If the alternator indicator lamp terminal voltage is
really low, it indicates low power of excitation line
Turn on the power switch of the vehicle and connect the test lamp to the
terminal B+ and E (negative) of the alternator.
It indicates that there is no voltage at terminal B+
of alternator and the wire to the positive pole of
batte
r
y
i
s
m
a
lf
u
n
ct
i
o
n
ed.
Is test lamp ON?
N
o
Yes
Yes
Yes
N
o
Yes
N
o
Connect the wire from terminal E to
terminal D+ of alternato
r
Is test lamp ON?
It indicates that the internal electric circuit
at terminal D+ of alternator is
malfunctioned.
Start the engine
Is test lamp ON?
Alternator is not
malfunctioned
Alternator is not
malfunctioned
Alternator
m
a
lf
u
n
c
ti
o
n

Baudoulin 4M11G Specifications

General

Brand	Baudoulin
Model	4M11G
Category	Engine
Language	English