Fleet Maintenance - 23

A unique aspect of the Envidia is its battery
management system. "Using AGM batteries for
an APU, the management system protects the
entire battery bank if one battery were to go
bad," Hubbard says. "The system isolates a failed
battery [so that a fleet] only needs to deal with the
cost of one failed battery versus an entire bank."
Electric APUs offer a zero-emission alternative to traditional APUs
which utilize diesel fuel. The
only anticipated maintenance
with an electric APU would be
battery replacement, normal
with any battery replacement
cycle. PM procedures should
accommodate battery monitoring, and including the APU
will add efficiency to the vehicle's battery system altogether. There are no modifications
necessary to the vehicle's ECU
if it already has the ability to
monitor battery voltage.
With the Envidia, customers can have the user interface installed in the cab rest
area. There are independent sensors to monitor the
temperature and operation of
the APU itself, as well as the
cab. A simple user interface
device contains a temperature sensor and controls
to adjust cab temperature.
It also includes a display
for state of charge on the
battery, shown through a set
of LEDs. The interface is as
small as a person's hand and
can be installed on the wall
or console.

evaluate their current and future operational
requirements to decide for themselves if, how,
and when they adopt electrification.
Can the fleet's demands be met with full EVs?
Will electrifying one vehicle pose a data and
research opportunity to extrapolate viability
for the electrification of the entire fleet? Does a
fleet hold out on electrifying their vehicles today

in hopes of full EVs capable of meeting their
demands tomorrow? There is much to consider
when looking at the electrification of fleet vehicles - and the ability to successfully execute such
a drastic upheaval in the status quo of operations
will make all the difference.
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What next?

For now, there is flexibility in the pace and extent to
which fleets adopt electrified
systems.
Federal mandates such as
the Clean Air Act, or state regulations such as California's
resource board (CARB) emissions standards, have been,
are currently, and will continue to develop and further
impact fleets' operations and
makeup. The technology to
ensure compliance with such
regulations will become more
prevalent, alongside the acquisition of more and more data
on the environmental and
logistical impacts such technologies offer.
With further federal and
state regulation changes
imminent, technologies available today and in the future
are on the path of potentially
drastic change. Fleets must

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Fleet Maintenance

Table of Contents for the Digital Edition of Fleet Maintenance