By using an E-Deutz diesel engine and driveline to power a generator and store energy in a battery pack, a Manitou telehandler has downsized from a 3.6-litre 74kW (100hp) engine to a 2.2-litre 54kW (73hp) engine by tapping the extra 20kW (27hp) from the batteries and generator to make up the difference.
Previously, an engine manufacturer’s responsibility stopped at the flywheel, but now an increasing number of engine OEMs are paying as much attention to the drivetrain as they are to the engine itself. And this includes, in many cases, electrified and hybrid drivetrains.
Deutz has paved the way by releasing prototype electric drives, called the E-Deutz portfolio, and now hybrid electric drives are running two demonstration Manitous’ and two Liebherr telehandlers.
The fully electric Manitou MT 1135 telehandler has a 360-volt vehicle power supply and a 59kW (80hp) 60 kilowatt electric motor with a 30 kilowatt-hour battery, all driven by a Deutz TCD 3.6 litre engine.
For the hybrid E-Deutz drive, the company was able to replace the 3.6-litre engine with a Deutz TCD 2.2-litre engine that generates 54kW (73hp) boosted by a 20kW (27hp) electric motor and 48-volt system in a Manitou MT 1335 telehandler
The hybrid Liebherr TL 432-7 telehandler also downsized from a 3.6 to a 2.2-litre Deutz engine, while maintaining the same aggregate power combining mechanical and electrical output.
In both cases the hybrid machines can be powered mechanically or on nothing but electrical power by storing the energy in a 10 kilowatt-hour battery.
Deutz expects a 15% fuel savings will be achieved on average, but this will depend on varying load cycle and work application.