The B5 alternator is typical for Cup race cars. Robustness increase for motorsport use. Free-running pulley for reduction of wear.
The multifunctional regulator with special developed ASIC by Bosch controls the output voltage at B+ connection.
Three arm design allows the use of an clamping arm.
Features
- 150 A
- 5,600 g
- Clockwise rotation
- With multifunctional regulator
Application
Application | 150 A at 6,000 rpm/23°C |
Max. ambient temperature | 105°C, high current only with supported cooling air |
Max. ambient temperature (short-term) | 120°C, high current only with supported cooling air |
Rotating direction | Clockwise |
Technical Specifications
Mechanical Data
Body material | Cast aluminum |
Weight w/o pulley | 5.6 kg |
Max. rotations | 13,000 x 1/min |
Moment of inertia | 26 kg*cm2 |
Outer diameter w/o screw | 156 mm |
Length w/o pulley | 172 mm |
Battery B+ connection | M8 |
Tightening torque at B+ | 15 Nm |
Electrical Data
Regulating voltage | 14.2 V |
Temperature compensation | -10 mV/K |
High temperature cut off derating | -250 mV/K |
Excitation resistor (L) | External (internal on request) |
Cut-in-speed | 1,400 x 1/min |
Characteristic
Rpm [1/min] |
| IG [A] at 80°C |
2,000 |
| 75 |
4,000 |
| 114 |
6,000 |
| 123 |
8,000 |
| 125 |
10,000 |
| 126 |
12,000 |
| 127 |
13,000 |
| 127.5 |
Please note: Measured with U=13.1 V and t=20 min | ||
Installation Notes
Typical lifetime: max. 50 h according to Bosch Motorsport standard validation program |
For application with severe conditions and/or high volume, please, contact your Bosch Motorsport counterpart in order to define the most appropriate validation program. |
Ground connection for power and regulator is through the case. Ensure that the case has a high current, low electrical resistance connection to vehicle ground. |
Operating the alternator is only permitted with the installed regulator and a connected 12 V battery (Lithium battery not proved). |
An external lamp (on request) can also realize the excitation current. |
Please find further application hints at our homepage. |
Ordering Information
Alternator B5
Order number: F 02U V01 747-03