HYBRID POWERTRAINS
TRIPLE CHOICE
Perkins showcased three hybrid power
solutions at Bauma Munich in March 2019
all at 75kW (100hp) and based on the
Perkins Syncro 2.8 litre. These comprised
hybrid-electric, hybrid-mechanical and
hybrid-hydraulic solutions.
The hybrid-electric engine features an
advanced regenerative braking system
supplying energy back into the engine via
a motor to provide additional power. It
incorporates an electric machine and
battery within the engine system. Perkins’
preferred arrangement delivers fuel saving
benefi ts while moderating the installation
impact and minimising the cost impact on
the machine. The company says fl exibility
of the system provides opportunities for
further effi ciency and functionality
improvements in the whole machine
through use of 48V electrics.
The hybrid-mechanical system stores
energy from braking mechanically, supplying
energy back into the engine when needed
via a clutch mechanism. This is particularly
useful in hybridising machines that run a
cyclic operation and need very intense
bursts of additional power. Installation size
and quick energy release are among the
other key advantages of this system.
The hybrid-hydraulic incorporates
a hydraulic pump and pressure accumulator
within the engine system. The pump recovers
LEFT: Perkins
electric hybrid engine
RIGHT: Perkins mechanical
hybrid engine
BELOW: Perkins hydraulic
hybrid engine
energy as the machine brakes and stores it
within the accumulator. The accumulator is
then able to supply energy back to the
engine, via the pump when required.
Perkins’ Ajay Prasher says that each of
the company’s three sets of technologies
offers its own performance attributes,
“When deciding which technology is most
appropriate, OEMs would need to
understand what base load and power the
machine will require. The OEM will also
need to understand how much additional
power boost is required and for how long.”
Where a sustained level of boost is
needed for a longer period of time, such as
a telehandler looking for fuel economy
32 iVTInternational.com November 2019
/iVTInternational.com
