Charging
When the ignition key is turned to position II (and III) current goes from the central electronic module to connection L on the charge regulator. The regulator directs current to the excitation winding rotor and is then grounded via the regulator. When the current travels through the rotor a magnetic field is formed around the rotor. When the engine is started and the rotor begins to rotate, the magnetic field also rotates and then produces alternating current in the stator windings.
Alternating current is rectified when it passes the diodes and is then fed to the electrical system of the car. The voltage obtained from the stator winding also passes to the regulator via the rectifier and affects the control functions.
When the voltage exceeds the permitted value, the charge regulator reduces the current through the excitation winding. The strength of the magnetic field decreases as does the stator winding supplied alternating current.
The charge indicator lamp in the combined instrument panel is controlled by the driver information module via signals from the Controller area network (CAN).
The purpose of the generator (GEN) is to supply the power consumers with power and to ensure that the battery remains charged. The generator (GEN) is mounted on the front edge of the engine.
The power handling capacity of the generator (GEN) depends on the engine speed (RPM). When the engine is idling the generator (GEN) only supplies approximately half the maximum power handling capacity. When the engine is idling with many power consumers connected battery recharge is negatively affected i. e, the battery does not charge. Battery charging is less efficient in cold conditions than at room temperature. This means that when the engine is idling for a long time, with large power consumers connected the battery can drain.
If the generator fails to charge the power consuming components will take their supply exclusively from the battery. In the end this will drain the battery completely.
The generator (GEN) first generates AC current which is converted to DC current in the DC bridge. the generator (GEN) has a built-in charge regulator.
The auxiliaries belt transfers power from the crankshaft pulley to the auxiliaries such as the power steering pump, air conditioning (A/C) compressor and generator (GEN). The belt tension is tensioned using an automatic belt tensioner. The belt is a Poly-v-belt.
The generator (GEN) with charge regulator can be diagnosed through the central electronic module.