What are the functions of the four wires of the car alternator?

1. There are B+, D+, DFM, etc. behind the German car generator. Japanese cars include IG, F, L, N, etc.

2. D+ is the generator excitation and is also the connection for the battery charge light on the dashboard. DFM is the power management signal line. It is responsible for monitoring the generator load so that the engine computer. can increase engine speed to adapt to load requirements at any time.

3. The IG behind the generator of a Japanese car is the line after the ignition is turned on, L is the line for the charging light, F is the excitation line, and N is neutral. double.

How to connect the four wires of the generator in the car?

Terminal B --- total output terminal of the generator, connected to the battery and the load power supply The main line is connected. The generator is used to charge the battery and power thedependent.

The B+ of the car generator is the positive output, which is connected to the positive terminal of the battery to charge the battery, and to the electrical equipment of the car to power the lights and equipment;

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Terminal L (D) --- charging indicator terminal (default). Pre-excitement.

The D+ of the generator is connected to the excitation coil, and the three low-power magnetic field diode terminals provide continuous excitation current for the rotor

Terminal W ---phase; lead, usually used as the electrical signal input of the speed sensor.

The W of the motor mainly produces AC voltage, which can be used to measure the power tachometer of automobiles and other AC equipment.

E terminal --- ground wire, usually the generator shell is used for grounding.

The shell of the double-wire generator is not grounded and the E terminal is connected to the power ground wire.

Detailed information:

Generally, automobile generators have 4 terminals:

1 B+ Or B . or +? : The positive output terminal of the generator, the positive output of the generator stator after rectification. Connect to the positive terminal of the vehicle's battery, regulator and electrical devices (loads). The B+ battery-free motor is directly connected to the air conditioner.

2. F+ or F or D: magnetic field terminal, which is connected to the "magnetic field" terminal of the regulator for excitation of the generator rotor.

3. or E: The negative pole of the generator stator output after rectification is connected to the negative pole of the battery negative regulator, usually directly grounded.

4. N or P or W or R or L: generator neutral point output terminal,the output voltage is half of B+, connected to the tachometer, charging indicator light, relay, etc.

References:

What do D and B mean on the generator

The generator in the car has four wires, which are the B+ battery positive terminal, the regulator positive terminal, the regulator ground wire, and the generator ground wire. Connect these four wires and the generator can work. Normally. , the specific steps are as follows:

1. Place the generator on the table.

2. The B+ pin on the far left is the wire connecting the positive terminal of the battery.

3. Pin F is connected to the positive pole of the regulator.

4. Pin E is the ground connecting the regulator.

5. The last thing left is to connect the pins to vehicle ground.

BoHello, is the D+ terminal of the car alternator a carbon brush terminal?

D+ represents the excitation line. The coil is rotated by heat or other energy, and the rotation of the electrical machine is used to drive the generator rotor. Using the principle of "electromagnetic induction", the generator will produce an induced electromotive force and a current can be generated. generated via the closed load loop. D+ is the part that generates current.

B+ represents the wire through which the generator carries current. It is led to the circuit which must be operated via the terminal block. Connected in a loop, it operates electrical equipment.

Generators are widely used in industrial and agricultural production, national defense, science and technology and daily life. There are many forms of generators, but their operating principles are all baseds on the law of electromagnetic induction and the law of electromagnetic force. Therefore, the general principle of its construction is: using suitable magnetic and conductive materials to form magnetic circuits and circuits that conduct electromagnetic induction among themselves to generate electromagnetic energy and achieve the conversion goal of energy.

The classification of generators includes:

Generators are divided into: DC generators and AC generators;

AC generators are divided into: synchronous generators and asynchronous generator (rarely used);

AC generators can also be divided into single-phase generators and three-phase generators.

There are many types of generators. In principle, they are divided into synchronous generators, asynchronous generators, single-phase generators and three-phase generators. In termss of generation method, they are divided into steam turbine generators, hydraulic generators, diesel generators, gasoline generators, etc.

Baidu Encyclopedia - Generator

The D+ terminal of the car generator is a carbon brush terminal, and the generator regulator F is connected to this terminal. one end of the generator excitation coil and the other end of the excitation coil are directly grounded! If the generator has a built-in regulator, this terminal is connected to the ignition switch, to put it bluntly, this is the power line to the generator's field coil.