Starter Motors and Generators Heavy Duty starter motor series HEF109 – engineered for high performance demands
Introduction Bosch offers a broad range of starter motors for onand off-highway commercial vehicles to the commercial vehicle manufacturers. The Heavy Duty (HD)starter motor series HEF109 is the best solution for large-volume engines requiring high cranking power. The starter motor can be equipped with a variety of different features enabling an adaption of the starter motor to the specific needs of our customers with little effort or expense. Product description ▶▶Starter motors for 24 volt nominal system voltage ▶▶Starter-motor performance of up to 9.2 kilowatts (at –20 °C) Customer benefits
▶▶Powerful solution for diesel engines of up to
▶▶ High cold-start performance
28 liters displacement and stationary gas-powered
▶▶ Excellent thermal robustness
engines
▶▶ Improved B10 lifetime compared to direct starter motors in this power output range due to specific product design ▶▶ Increased lifetime of ring gear and starter
▶▶Six-pole electrically excited starter motor type ▶▶Reduction gear drive and non-sliding overrunning clutch ▶▶Two-stage engagement process
pinion by reliable and smooth engagement
▶▶Unique compact design in this performance class
(two-stage)
▶▶B10 lifetime up to 800,000 kilometers in on-highway
▶▶Minimum installation space requirements
use or 14,000 operating hours in off-highway applica-
▶▶ Direct triggering of starter motor actuation via
tions
the engine control unit and simplified cable
▶▶Integrated mechanical relay (IMR) with optional
connection due to integrated mechanical relay –
plug connection provides reliable switching of all
serving as low current interface for electronic
starting functions between starter motor and
control of operation ▶▶ Different opportunities of optional performance features, thus
engine control unit ▶▶Modular starter-motor concept with optional performance features available:
• optimized, individual solutions • adaptable for specific high demands
IP protection class
Thermal protection
Rotatable flange
Insulated ground
Switched ground
“-MP” (Power Plus)