e-POWER control technology
Advanced control technology supports the powerful and quiet driving that is characteristic of motor drive
e-POWER
is
Nissan‘s
original
electric
powertrain
which
generates
electricity
from
an
engine
and
is
100%
motor
driven.
In
addition
to
the
smooth
and
powerful
driving
that
is
unique
to
and
characteristic
of
motor
drive,
advanced
control
technology
manages
the
engine's
operation,
providing
an
overwhelmingly
quiet
experience.
In
areas
where
road
noise
is
low,
such
as
in
urban
areas,
the
engine‘s
operation
is
suppressed
as
much
as
possible,
and
in
areas
where
road
noises
are
high,
such
as
when
driving
at
high
speeds
or
on
rough
roads,
the
engine
generates
electricity
and
realizes
a
quietness
that
makes
you
feel
as
if
the
engine
isn’t
there.

System Operation
e-POWER provides an overwhelmingly quiet experience with less frequent engine operation when compared to general hybrids.
- At low to medium speeds, such as in urban areas, the motor is only driven via the battery.
- When the driver releases the accelerator for deceleration, the regenerative brake is activated and the battery is charged with the electricity that is generated.
- When driving at high speeds, the engine generates electricity to drive the motor and charge the battery.
- When strong acceleration is required, the motor combines the electricity generated by the engine and the electricity from the battery, and then powerfully drives the vehicle.
When the battery is low, the engine does not operate to generate electricity if possible. However, when driving on rough roads which tend to be noisy, the engine operates efficiently to charge the battery in a short amount of time.* In other words, on rough roads, the engine noise is masked by the road noise. Additionally, when charging at low speeds is needed, the engine operates while suppressing its RPM.


- The control that changes operation according to road surface conditions is applied to some vehicle models.
System Mechanism
e-POWER
has
a
high-power
motor
and
a
high-performance
lithium-ion
battery,
and
can
drive
battery-only
in
a
wide
range
of
situations.
Because
the
engine
is
specialized
for
power
generation
and
is
not
connected
to
the
drive
wheels,
the
system
can
freely
control
the
engine's
operation.
Power
generation
timing
is
controlled
by
judging
based
on
the
vehicle
speed,
degree
of
acceleration,
and
battery
charge
level,
etc.
Technology
is
also
being
introduced
that
estimates
road
surface
roughness
from
minute
fluctuations
in
wheel
speed
and
actively
operates
the
engine
on
rough
road
surfaces.*
Additionally,
by
operating
at
efficient
engine
RPM
when
generating
power,
the
engine's
operating
time
is
reduced
and
high
fuel
efficiency
is
achieved.
Through
step-by-step
changes
to
engine
RPM
according
to
vehicle
speed,
engine
operation
is
controlled
so
that
the
engine
isn’t
apparent.

- The control that changes operation according to road surface conditions is applied to some vehicle models.