eGen Flex™

eGen Flex™ electric hybrid provides revolutionary capabilities and fully electric propulsion when you need it for up to 10 miles each charge depending upon duty-cycle, without the added infrastructure requirements of full EV. Our advanced technology provides geo fencing capabilities to switch to full electric mode when entering zero emission zones or depots, eliminating emissions and reducing noise levels, specifically in highly populated areas.


  • Drive Unit

  • Inverter

  • Rechargeable Energy Storage System


Drive Unit

  • Same proven industry-leading reliability
  • Disconnect clutch added to enable disengaging input shaft from the engine
  • Provides propulsion while the engine is at zero speed, enabling full engine-off propulsion capability


  • Improved efficiency
  • Improved packaging – one-third the size and 50 lbs. lighter than component used in earlier hybrid systems
  • WEG cooling – no oil-coolant lines from drive unit, reducing installation complexity and maintenance costs

Rechargeable Energy Storage System

  • Lithium Titanate (LTO) chemistry that is ideal for electric hybrid operation with constantly being recharged
  • Increased energy capacity – industry-leading 10-mile electric range capability
  • Battery design life of eight years
  • Faster charging than other chemistries
  • Improved fuel economy up to 25% versus conventional diesel bus
  • Operate accessories such as air conditioning and heat at their optimal efficiency with clean and quiet electric power
  • No new charging infrastructure required
  • No engine emissions or noise in dense pedestrian areas while loading and unloading passengers 
  • Electric vehicle operation in Zero Emission Zones and bus depots with geofencing capability
  • Up to 10 miles electric range, duty-cycle and axle-ratio dependent
  • Reduced CO2 emissions
  • Eliminate inefficient belt-driven accessories and reduce the load on the engine
  • Reduced brake wear and increased power through electric hybrid regenerative braking

Reduce Dependence on Fossil Fuels at the Pump

Enhance Quality of Life

Protect the Environment

Reduce Downtime and Maintenance Costs

Innovation that Drives

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