Alternator B3 LIN

The B3 LIN is a powerful 12 V motorsport alternator. It has an optimized hand wound stator winding (3 phase triangle), high current diodes (special Zener diode chips from Bosch production to retain load-dumps) and an extra fine balanced rotor with double impregnated winding.

The LIN regulator (special Bosch developed ASIC) controls the alternator output voltage at B+ connection. The main benefit of this alternator is the high power output in a small low weight package. Furthermore it is optimized concerning vibration endurance.

Features

  • >200 A
  • 4,800 g
  • Clockwise rotation
  • Electrically and mechanically identical with B3
  • Motorsport optimized LIN2.1 regulator with latest ASIC technology

Application

Application

>200 A at 7,000 rpm/85°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

Fixed frequency regulation with pulse width modulation

Stand-by-mode

Switching-on via LIN interface

High side output stage with defined ramp steepness and FET as freewheeling „diode“

Emergency start and default mode

Adjustable set values via LIN interface

Outputs of status information via LIN interface

Technical Specifications

Mechanical Data

Body material

Cast aluminum

Weight w/o pulley

4.8 kg

Max. rotations

18,000 x 1/min

Moment of inertia

22 kg*cm2

Outer diameter w/o screw

136 mm

Length w/o pulley

117 mm

Battery B+ connection

M8x1.25

Tightening torque at B+

22 Nm

Electrical Data

Regulating voltage

14.2 V

Temperature compensation

-10 mV/K

High temperature cut off derating

-250 mV/K

Excitation resistor (L)

Internal (external on request)

Cut-in-speed

3,000 x 1/min

Characteristic

Rpm [1/min]

 

IG [A] at 85°C

3,000

 

14

4,000

 

118

5,000

 

165

6,000

 

189

7,000

 

200

8,000

 

200

9,000

 

200

10,000

 

200

11,000

 

200

12,000

 

200

14,000

 

200

16,000

 

200

18,000

 

200

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.

Rectifier diodes are designed and proved for B+ continuous output current of 210 A. The alternator is able to support more current, but this must be restricted for short time to prevent the destroying of rectifier diodes.

Ordering Information

Alternator B3 LIN

Order number: on request

Dimensions

 

Schematic Diagram

 

Downloads

Documents