The powerful starter motor generates 18% more power than the tried and tested ‘M’ (medium) type starter motor on which it is based, and thus delivers a maximum output of 9.2 kilowatts. This is enough to reliably start engines with

up to 28 litre displacement.

Bosch starter motors and generators division president Ulrich Kirschner said: “This new high-performance starter motor is an excellent choice for particularly large engines such as construction machinery.

“These engines were previously very difficult to start with single starter-motor configurations.”

The powerful single-starter solution makes a more complex parallel-starter system unnecessary. The technology is designed to achieve a mileage of up to 800,000km in on-highway use or 14,000 operating hours in off-highway applications.

The design of the HEF109-L is compact, making it particularly suitable for applications where installation space in the engine compartment is limited. The high thermal robustness ensures reliable starting of large engines – even at very low ambient temperatures or in long-lasting starting sequences.