Generator G-221
1 - cover from the side of slip rings; 2 - rectifier block; 3 - bolt for fastening the rectifier unit and stator winding leads; 4, 5 - contact rings; 6 - rear ball bearing; 7 - rotor shaft; 8 - insulating bushings; 9 - screw for fastening the brush holder; 10 - positive contact bolt (conclusion «30»); 11 - insulating sleeve of the contact bolt; 12 - plug of the central output of the stator winding; 13 - brush holder; 14 - negative brush; 15 - positive brush; 16 - stud for attaching the generator to the tension bar; 17 - impeller pulley; 18 - pole tip of the rotor from the drive side; 19 - generator drive pulley; 20 - pulley fastening nut; 21 - remote ring; 22 - front ball bearing; 23 - cover from the drive side; 24 – rotor winding frame; 25 - rotor winding; 26 - stator slot insulation; 27 - stator; 28 - stator winding wedge; 29 - stator winding; 30 - pole tip of the rotor from the side of slip rings; 31 - coupling bolt; 32 - buffer sleeve; 33 - sleeve
Generator System Wiring Diagram
1 - rechargeable battery; 2 – generator rotor winding; 3 - generator; 4 – generator stator winding; 5 - generator rectifier unit; 6 - voltage regulator; 7 - additional resistors; 8 - thermocompensating resistor; 9 - throttle; 10 - ignition switch; 11 - fuse box; 12 - charge control lamp; 13 - charge control lamp relay
Rated voltage | AT 12 |
Direction of rotation | right (drive side) |
Maximum output current at 14 V and rotor speed 5000 min–1, A | 42 |
Maximum rotor speed, min–1 | 13000 |
Gear ratio engine-generator | 1: 2,04 |
On VAZ-2101, -2102 vehicles and their modifications, a three-phase alternating current generator of the G-221 type was used (see fig. Generator G-221) with built-in rectifier. Until the mid 80s «negative» valves (diodes) rectifiers were pressed into cover 1, and «positive» - in a separate plate attached to the lid.
Since the mid-1980s, for G-221 generators, all valves have been located in a non-separable rectifier block 2, consisting of two plates. In case of damage to the valves, the block is replaced with a new one.
Regulator 6 (see fig. Generator System Wiring Diagram) maintains the generator voltage at 13.2–14.5. The serviceability of the generator is checked using the control lamp 12 in the instrument cluster and relay 13.
When the ignition is switched on, when the engine (and hence the generator) does not work yet, current flows from the battery through the relay contacts, and the lamp is on. After starting the engine and when the car is moving, the lamp should go out, since under the action of the rectified phase voltage of the generator, the relay armature should be attracted to the core and open the relay contacts.