Edited by Asiautos Auto Part
The car generator is the main power source of the car. Its function is to supply power to all electrical devices (except the starter) when the engine is running normally (above idling speed) and charge the battery at the same time.
Since the performance of AC generators is better than that of DC generators in many aspects, DC generators have been eliminated. At present, cars use three-phase AC generators with diode rectifier circuits inside to rectify AC into DC, so the output of the car AC generator is DC. The AC generator must be equipped with a voltage regulator, which controls the output voltage of the generator to keep it basically constant to meet the needs of automotive electrical appliances.
1.Components of the generator
Generally, the automobile generator is composed of the rotor, stator, rectifier, front and rear cover, fan, pulley and other components. Its working principle is that when the external circuit energizes the excitation winding through the brush, a magnetic field is generated, and the claw pole is magnetized into the N pole and the S pole. Battery positive pole → charging indicator light → regulator contact → excitation winding → ground → battery negative pole.
2. Rotor
The function of the rotor is to generate a magnetic field. The rotor is mainly composed of claw poles, magnetic poles, excitation windings, collector rings, rotor shafts, etc. Two claw poles are pressed on the rotor shaft, and the excitation winding is installed in the claw pole cavity. The collector ring is composed of two copper rings insulated from each other, which are pressed on the rotor shaft and insulated from the shaft. The two collector rings are connected to the two ends of the excitation winding respectively. When direct current is passed through the two collector rings, current flows through the excitation winding and generates axial magnetic flux, so that one claw pole is magnetized as an N pole and the other is magnetized as an S pole, thus forming six or eight pairs of interlaced magnetic poles.
3. Stator
The function of the stator is to generate alternating current. The stator is installed outside the rotor and fixed to the front and rear ends of the generator. When the rotor rotates inside it, it causes the change of magnetic flux in the stator winding, and an alternating induced electromotive force is generated in the stator winding. The stator consists of a stator core and a stator winding. The stator core is composed of silicon steel sheets with slots on the inner ring and insulated from each other. The stator winding has three sets of coils, which are symmetrically embedded in the slots of the stator core. There are two types of connection for three-phase windings: star and triangle, and star connection is generally used.
4. Rectifier
The function of the rectifier is to convert the three-phase alternating current generated by the stator winding into direct current. The rectifier is composed of rectifier diodes. The rectifier of the 6-tube AC generator is composed of 6 silicon rectifier diodes that are pressed or welded on two insulated plates, one of which is a positive plate with output terminal bolts; the other is a negative plate, which is directly connected to the generator housing (grounded), or the rear cover of the generator can be directly used as a negative plate. The 6 rectifier diodes are divided into two types: positive tubes and negative tubes. The one with positive lead electrode is called positive tube, and the one with negative lead electrode is called negative tube.
10100210 | 10236721 10236721-SEPP | 10747512 |
10095176 | 10202585 | 10747513 |
10095174 | 10759212 | 10766121-SEPP |
10037085 | 10235235 | 10766122-SEPP |
10036831 | 10598868 | 10879244 |
10031849 | Part Number | 10771088-SPCP 10771088-SEPP 11111532-SEPP |
10073599 | 10437501 | 10735420-SEPP |
BRG200005/10+0.25 | 10769602 | 10735422-SEPP |
THM200001 | 10708379 | 10771087-SPCP 10771087-SEPP 11111531-SEPP |
PMP200005 | 10708378 10708379 | 10735419-SEPP |
LPW100180 | 10707690 10707689 | 10735421-SEPP |
HTL200001 | 10667178 10667179 | 10770980-SPCP 10770980-SEPP 11111534-SEPP |
50016100 | 10667179 | 10735420-SEPP |
50016090 | 10623448-SPRP | 10735422-SEPP |
10759212 | 10585054 | 10770979-SPCP 10770979-SEPP 11111533-SEPP |
10094254 | 10030588 | 10232950 | 12643418 | 10252196 10803554 10252196 |
10336894 |
10077376 | 50015571 | 10241848 | 12681616 | 10289135 | 10229021 |
10232645 | 10239523 | 10485232 | 10361599 | 10229022 | |
10230176 | 3005107 | 10129464 | 24111055 | 10510001 | 10320509 |
10230745SEPP | 10040703 | 10191741 | 55577403 | 10577458 | 10320510 |
10229018 | 50015574 | 10226250 |
BRG200010BLU BRG200010RED |
10632429 | 10990914 |
10099079 | 30005106 | 10226859 | 10231482 10175701 |
10789614 10789615 |
30005443 |
0 399 703 196 3708100XEB15 | 5205102AKN01A 5205104AKN01A 6310100XKN01A |
4116500XKZ36A | 2915100XKZ1DA 2915200XKZ1DA |
1000100XKN04A | 5207106XKN01A, 5207103XKN01A, 5207100XKN01A |
4116600XKZ36A | 2915200BKZ16A |
1001105XGW01A | 5207106XKN01A, 5207103XKN01A, 5207100XKN01A |
4121100XKN01A 4121101XKN01A |
3001102XGW01A 3001103XGW01A |
1008100XEB06 | 5207107XKN01A | 4121950X990JC / 4121950X990JA | 3103100XGW01A |
1008100XEN01 | 52320 SWA A01 | 4121950X990JC / 4121950X990JA | 3103101XKZ16A |
1009100XEB58 | 52321 SWA A01 | 4133100XKN01A 4133101XKN01A |
3104102XGW01A |
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