Sinotruk howo parts generator regulator FTD2532N for Alternator

Relevant Knowledge

The function of the regulator is to protect the battery, which is the charging protection device of the battery, so as to avoid overcharging and affecting the service life. The principle is that there is a detection circuit inside the regulator. When the battery voltage is higher than the set value (usually 14v or 28v), the switch tube will be disconnected and the power supply to the generator excitation coil will be stopped. The generator can only idle without excitation current [stop generating].

Because the engine speed changes in a large range when the vehicle is running normally, it will certainly have a great impact on the output voltage of the generator, and the motor regulator plays a very important role in maintaining the voltage within a certain range as the regulating voltage.

Function of generator regulator

The voltage regulator is an important part to assist the generator. Because the alternator rotor is driven and rotated by the engine through the belt when the vehicle is running normally, the engine speed changes from about 800 rpm at the lowest to about 6000 rpm at the highest. The engine speed changes in a wide range, which will definitely have a great impact on the output voltage of the generator, causing a large change in the output voltage of the generator, which cannot meet the working requirements of the automotive electrical equipment. In order to ensure that the generator voltage can be maintained at a certain value at different speeds, and can be automatically adjusted with the change of the generator speed, so that the voltage value can be maintained at a certain range, it is necessary to install a voltage regulator to keep its output voltage basically constant under all operating conditions of the engine. The normal operation of the voltage regulator is very important to ensure the normal operation of the entire vehicle electrical system and prolong the service life of the vehicle electrical equipment. The output voltage (or charging voltage) of the automobile generator regulator has a great impact on the service life of the battery. Its function is to protect the battery, which is the charging protection device of the battery, so as to avoid overcharging and affecting the service life. For 12V automotive electrical systems, the regulator regulates the output voltage of the generator between 13.8 and 14.4 volts.

Type and principle of generator regulator

From the perspective of the development of generator regulator, it has experienced three types: contact type, electronic type and microcomputer control type. The contact type uses mechanical contacts to control the connection and disconnection of the rotor coil; The electronic voltage regulator uses a triode or integrated circuit to control the turning on and off of the rotor coil; In the microcomputer control mode, the engine control unit or a separate power management system controls the connection and disconnection of the rotor coil. When it comes to voltage regulator, it is necessary to mention the external grounded voltage regulator and the internal grounded voltage regulator. The internal grounding voltage regulator controls the grounding point of the rotor coil inside the generator; The grounding point of the external grounding voltage regulator control rotor coil is outside the generator. In this definition period, the generator voltage regulator adopts the external design, so the essence is: the internal grounding voltage regulator controls the power supply of the rotor coil; The external grounded voltage regulator controls the grounding of the rotor coil.