Chery B11. Manual — part 80

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cable to terminal B and connect voltmeter cathode to ground safely.)

6. Install engine tachometer.

7. Connect battery cathode cable.

8. Keep engine cover open.

9. Check if voltmeter reading is the same as battery voltage.

Remarks: If voltage is 0V, it means the wiring between alternator terminal B and battery anode is

disconnected or the fuse is broken.

10. Keep lighting switch ON and start on engine after headlamp lighting.

11. Headlamp is adjusted to high beam position and heater blower switch is turned to large volume

position. Engine speed increase to 2500 r/min and the ammeter shows the max. output current

value.

Limit value: 70% rated output current

Remarks：

Rated output current is represented on alternator nameplate.
Due to charging current decreasing violently after engine starting, maximum current must

be read quickly.

Output current changes with electronic load or alternator body temperature changing.
If motor vehicle load is too small during testing, the output current can’t reach regulated

value even alternator works well. If so, it may open headlamp to make battery discharged or

open lamps on other motor vehicles, which will increase electronic load. And then make test

again.

If alternator body temperature or environment temperature is too high, output current often

can’t reach to the regulated current. If so, wait until alternator is cooled and then make test

again.

12. Ammeter reading should be higher than limit value. If it is lower than limit value but alternator

output cable is ok, please remove alternator from engine and check it further.

13. Keep engine running at idle speed after experiment finish.

14. Turn ignition switch OFF.

15. Remove battery cathode cable.

16. Remove ammeter, voltmeter, engine tachometer for test.

17. Alternator output cable is connected to alternator B terminal.

18. Connect battery cathode cable.

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Output Current Measuring Schematic Diagram

负载 Load 电压表 Voltmeter 电流表 Ammeter 充电警告灯 Charge warning light 点火开关 Ignition switch
蓄电池 Storage battery 交流发电机继电器 Alternator relay 交流发电机 Alternator 发动机 Engine

IV. Voltage Adjustment Experiment

Ii

ch Dkke o

Engine

Storage

battery

Voltmeter

Ammeter

Alternator

Ignition switch

Alternator relay

Charge warning light

Load

The experiment is designed to check if voltage regulator may control alternator output voltage.

1. Please check the following items before experiment.

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Alternator installation status.
Check vehicle battery status. Battery should be in full power status.
Alternator transmission belt tension
Fuse status
If abnormal noise exists during engine running

2. Turn ignition switch OFF.

3. Remove battery cathode cable.

4. Connect digital voltmeter to alternator B terminal and ground. (Connect voltmeter anode cable to

S terminal and then connect voltmeter cathode cable to ground safely.)

5. Remove alternator output cable from alternator B terminal.

6. Connect a DC 0-100A ammeter in series between terminal B and removed output cable.

(Connect ammeter anode cable to terminal B and then connect ammeter cathode cable to the removed

output cable.)

7. Install engine tachometer.

8. Connect battery cathode cable.

9. Turn ignition switch ON. Check if voltmeter reading is the same as battery voltage.

Remarks: If voltage is 0V, it means the wiring between alternator terminal B and battery anode is

disconnected or the fuse is broken.

10. Close all lights and accessories.

11. Start on engine.

12. Increase engine speed to 2500 r／min.

13. Read voltmeter indictor when alternator output current drops to 10A.

14. If voltmeter reading is the same as voltage regulator reading, it means voltage regulator works

well.

If voltage value is not within the standard value range, it means voltage regulator or alternator is

not functioned properly.

15. Keep engine running at idle speed after experiment finish.

16.Turn ignition switch OFF.

17.Remove battery cathode cable.

18.Remove ammeter, voltmeter and engine tachometer for test.

19. Connect alternator output cable to alternator terminal B.

20. Connect battery cathode cable.

Voltage Regulation Standard Value

Check terminal

Voltage Regulator Usage

Temperature（℃）

Standard Value

－20 14.2～15.4

20 13.9～14.9

Terminal“S”

60 13.4~14.6

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80

13.1~14.5