2014 KIA Optima Hybrid engine

H2
Kia Hybrid-Electric Vehicle (HEV)
uses a gasoline engine and an
electric motor for power. The elec-
tric motor is powered by a 270V
high voltage HEV battery.
The HEV computer decides when
to use the engine and when to use
electric motor, according to driv-
ing conditions. At times, both are
used simultaneously.
By turning off the engine under
certain conditions and using the
electric motor alone, the HEV sys-
tem saves fuel.
When the HEV battery reaches a
low state of charge, the engine will
cycle on and off to recharge the
battery. Charging also occurs
when decelerating by using
regenerative braking.Hybrid System Display
Many of the displays provide infor-
mation about the hybrid system,
such as the ECO Level and ECO
Score.
The ECO Level displays inform the
driver of the vehicle's fuel efficiency.
If the vehicle is driven economically,
the ECO Level rises. When the vehi-
cle is driven in EV mode, there is a
reduction in carbon dioxide (CO2)
emissions.
The Total ECO Score display indi-
cates the number of times the ECO
Level has reached its maximum.ECO Level display
When the vehicle is started, the ECO
Level display will indicate level 4. If
you drive economically, the ECO
Level will increase. However, if you
do not drive economically, the ECO
Level will decrease.
Kia HYBRID SYSTEM
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H3
State of charge
The state of charge (SOC) gauge
indicates the hybrid battery's charge
level. If the SOC is near Low (L)
level, the vehicle automatically oper-
ates the engine to charge the battery.
The gauge will rarely approach the
High (H) level. This is normal and is
not an indication of a malfunction.
However, if the service indicator and
MIL(Malfunction indicator lamp) turn
on when the State of Charge(SOC)
is near L, have your vehicle checked
by an authorized Kia dealer immedi-
ately.
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WARNING
If the engine will not start after
cranking, press the Start/Stop
button to turn the system off.
This could result in the HEV bat-
tery becoming totally dis-
charged and is likely to be dam-
aged.

H4Kia hybrid system notifies the drivers
of energy flow in various operating
modes. Eleven Modes show drivers
the current operating condition.
Vehicle Stop
The mode means the vehicle at stop.
(No energy flow)
EV Propulsion
Motor power is used to move the
vehicle. (Battery
➞Wheel)
Power Assist
Electric and Engine power are used
to move the vehicle.
(Battery & Engine ➞ Wheel)
Engine Only Propulsion
Engine power is used to move the
vehicle. (Engine ➞Wheel)
Engine Generation
Vehicle is stopped with the Engine
charging the hybrid battery.
(Engine ➞Battery)
OPTIMA HYBRID ENERGY FLOW
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H5
Regeneration
Hybrid battery is being charged by
regenerative braking.
(Wheel ➞Battery)
Engine Brake
The vehicle is being slowed by
engine compression.
(Wheel ➞Engine)
Power Reserve
Engine is both driving the vehicle
and charging the hybrid battery.
(Engine ➞ Wheel & Battery)
Engine Generation/Motor Drive
The vehicle is being slowed by
engine compression and regenera-
tive braking. The hybrid battery is
being charged by regenerative brak-
ing.
(Engine ➞Battery ➞Wheel)
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H6
Engine Generation/Regeneration
The engine and regenerative braking
systems charge the hybrid battery
during deceleration.
(Engine & Wheel ➞Battery)
Engine Brake/Regeneration
The engine compression can be
used to slow the vehicle. The regen-
erative braking system can be used
to charge the hybrid battery.
(Wheel ➞Engine & Battery)
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H7
Starting the Hybrid System
1.Carry the smart key into the vehi-cle.
2.Make sure the parking brake is firmly applied.
3.Place the shift lever in the P(Park) position.
In N (neutral) position, the engine
(hybrid system) will not start.
4.Depress the brake pedal.
5.Press the engine start/stop button.
6.The engine should be started with- out pressing the accelerator. In
extremely cold weather or after the
vehicle has not been operated for
several days, let the engine warm
up without depressing the acceler-
ator.
• Even if the smart key is in thevehicle, it muse be within range of
the antenna before the engine
(hybrid system) will not start.
ton is in the ACC or ON position,
if any door is open, the system
checks for the smart key. If the
smart key is not in the vehicle, the
warning, "Key is not in vehicle"
will come on, and if all doors are
closed, the chime will also sound
for about 5 seconds. The indica-
tor will turn off while the vehicle is
moving. Keep the smart key in the
vehicle when using the ACC posi-
tion or if the vehicle engine is on. If the starting procedure is fol-
lowed, the "READY" symbol on
the instrument cluster will turn on.
For more details, Please check
chapter 5.
STARTING THE HYBRID VEHICLE (SMART KEY)

H8
ECONOMICAL and SAFE
OPERATION of Hybrid system
Drive smoothly. Accelerate at amoderate rate and maintain a
steady cruising speed. Don't make
"jack-rabbit" starts. Don't race
between stoplights.
Avoid excessive idling.
Obey the speed limit.
Monitor the Eco Guide Indicator.
Use Cruise control Whenever
Possible.
Use Auto Mode when setting the
Air Conditioning.
Avoid heavy traffic whenever pos-
sible. Always maintain a safe dis-
tance from other vehicles so you
can avoid unnecessary braking.
This also reduces brake wear.
The regenerative brake generates energy when the vehicle deceler-
ates. When the hybrid battery power is
low, the hybrid system automatical-
ly recharges the hybrid battery.
When the engine runs in "N" posi- tion, the hybrid system cannot gen-
erate electricity. The hybrid battery
cannot recharge in "N" position.
Please refer to chapter 5.
✽ ✽ NOTICE
When the hybrid system is in
READY mode, the engine will auto-
matically start and stop as needed.
The "READY" symbol will illumi-
nate in the cluster when the system
is operational.

H9
THE COMPONENTS OF HYBRID VEHICLE
1. Engine : 2.4L
2. Drive motor : 35kW
3. Automatic transmission : 6AT
4. Hybrid starter generator (HSG)
5. High voltage battery system6. HPCU (Hybrid Power Control Unit)
7. Electric Water Pump (EWP)
8. Brake system with hydraulic compressor
9. Electric air-conditioning compressor
10. Electric Oil Pump (EOP)
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