The benefits that gear-reduced starter motors offer, over older direct drive type, are well known in the car, LCV and HGV markets. (Smaller, lighter and more efficient = fuel saving)

For several years Prestolite have offered the market leading M105R starter  motor,  fitted on many OE’s including MTU, MAN, Van Hool, Cummins, CAT, Perkins, King Long, Weichai Power, Yulin Diesel and many others.

Based on the success of the M105R starters (producing > 150,000 per year) we have worked hard to expand our gear-reduced starter range and continue doing so to bring you the best product for all your starting needs.

We can now offer heavy duty GR starters from 2.8L up to 32L engines (single starter applications).
 
As expected from Prestolite, we continue to innovate to offer unique features.

Noseless starters with rotatable nose housing and rotatable control relay giving ultimate flexibility, and advanced clutch and gearbox developments to delivery enhanced starting conditions, protecting engines and giving endurance and longevity.

 
The M128R development is now completed, giving a 24V / 12kW starter for up to 32L engines (or 64L in dual starter applications). Redesigned gearbox, clutch and seal arrangement coupled with reinforced and dynamically balanced armature will give lighter, more powerful and more durable starter that its predecessor.

 

Stop/start functionality is migrating across from car into truck and bus markets.

The demand is primarily driven by emission control and fuels saving for public transport and multi-stop delivery vehicles navigating busy city centres.
 
Prestolite are working closely with Cummins and other OE manufacturers, developing and field trialling the stop/start SSM91R and M105R starter motor, with required duty cycle of 250,000 starts, in UK and China.
 
Stop / Start starter functionality not only impacts the starter motor functionality and reliability, but also places additional demand and stress on the electrical system.

With every start function the starter draws a large amount of power from the batteries. On continuous journeys this loss would be quickly replenished, however, the vehicle does not operate continuously due to the stop / start design. Therefore, the alternator is required to deliver a high output at low speed and at a higher efficiency, ensuring the system is capable of supporting the stop / start system and the other electrical loads (light, heating, charging points, etc).