2020 Hyundai Ioniq Plug-in Hybrid engine

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Hybrid Vehicle H HE
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The HYUNDAI Hybrid Electric Vehicle (HEV) uses both the gasoline engine and the electric motor for power. The elec-
tric motor is run by a high-voltage HEV battery.
Depending on the driving conditions, the HEV computer selectively operates between the engine and the electric motor
or even both at the same time.
Fuel efficiency increases when the engine is off at idle, or when the vehicle is driven by the electric motor with the HEV
battery.
The HEV battery charge must be maintained, so at times the engine will come on even at idle to act as a generator.
Charging also occurs when decelerating or by regenerative braking.
OAE056066 Startup/Low speed cruise
Electric motor
Acceleration
Electric motor + Engine
High speed cruise
Engine
Deceleration
Charging
Stop
Engine OFF

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Plug-in Hybrid Vehicle
The HYUNDAI Plug-in Hybrid Electric Vehicle (PHEV) shares the characteristics of both a conventional hybrid elec-
tric vehicle and an all-electric vehicle.
When used as a conventional hybrid electric vehicle, the HEV computer selectively operates between the engine and
the electric motor or even both at the same time.
When it is operating in the electric vehicle mode, the vehicle is driven only using the electric motor over a certain dis-
tance until the hybrid battery becomes low. The driving distance in EV mode depends on customer driving style and
road conditions. Aggressive driving maneuvers may at times temporarily enable the engine to operate for maximum
power.
The hybrid battery can be fully charged by connecting a plug to an external electric power source.
OAEPH057200L
Electric Vehicle ModeStartup/Low speedAcceleration High speed Deceleration External charging
Electric motor
CD (Charge Depleting) ModeCS (Charge Sustaining) Mode
Charging
MotorEngine+MotorEngine+MotorChargingBattery charging
6

H12
Information
• Even though charging is possible
with the Engine Start/Stop button in
the ON/START position, for your
safety, start charging when the
Engine Start/Stop button is in the
OFF position and the vehicle shifted
to P (Park). After charging has
started, you can use electrical com-
ponents such as the radio by press-
ing the Engine Start/Stop button to
the ACC or ON position.
• During AC charging, the radio
reception may be bad.
• Moving the shift lever from P (Park)
to R (Reverse)/N (Neutral)/D
(Drive) stops the charging process.
To restart the charging process,
move the shift lever to P (Park),
place the Engine Start/Stop button
to the OFF position, and disconnect
the charging cable. Then, connect
the charging cable.8. After charging has started, the
estimated charging time is dis-
played on the instrument cluster
for about 1 minute.
If you open the driver seat door
while charging, the estimated
charging time is also displayed on
the instrument cluster for about 1
minute.
When scheduled charging is set,
the estimated charging time is dis-
played as "--".
Information
Depending on the condition and dura-
bility of the high voltage battery,
charger specifications, and ambient
temperature, the time required for
charging the battery may vary.
ii
OAEPHQ049818L
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Information
• Even though charging is possible
with the Engine Start/Stop button in
the ON/START position, for your
safety, start charging when the
Engine Start/Stop button is in the
OFF position and the vehicle shifted
to P (Park).
After charging has started, you can
use electrical components such as
the radio by pressing the Engine
Start/Stop button to ACC or ON
position.
• Moving the shift lever from P (Park)
to R (Reverse)/N (Neutral)/D
(Drive) stops the charging process.
To restart the charging process,
move the shift lever to P (Park),
place the Engine Start/Stop button
to the OFF position, and disconnect
the charging cable. Then, connect
the charging cable.10. After charging has started, the
estimated charging time is dis-
played on the instrument cluster
for about 1 minute. If you open
the driver seat door while charg-
ing, the estimated charging time
is also displayed on the instru-
ment cluster for about 1 minute.
When scheduled charging is set,
the estimated charging time is
displayed as "--".
Information
Depending on the condition and dura-
bility of the high voltage battery,
charger specifications, and ambient
temperature, the time required for
charging the battery may vary.
ii
OAEPHQ049818L

H28
Starting the Vehicle
1. Carry the smart key or leave it
inside the vehicle.
2. Make sure the parking brake is
firmly applied.
3. Place the shift lever in P (Park).
With the shift lever in N (Neutral),
you cannot start the vehicle.
4. Depress the brake pedal.
5. Press the Engine Start/Stop but-
ton. If the hybrid system starts, the
" " indicator will come on.
Whether the engine is cold or
warm, it should be started without
depressing the accelerator.
After following the start proce-
dures, " " indicator on the
instrument cluster will turn on.
For more information, please
check Chapter 5.ECONOMICAL and SAFE OPERA-
TION of Hybrid system
Drive smoothly. Accelerate at a
moderate rate and maintain a
steady cruising speed. Do not
make "jack-rabbit" starts. Do not
race between stoplights.
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 is running with
the shift lever in N (Neutral), the
hybrid system cannot generate
electricity. The hybrid battery can-
not recharge with the shift lever in N
(Neutral).
Information
In the hybrid system, the engine auto-
matically runs and stops. When the
hybrid system operates, the " "
indicator is illuminated.
In the following situation, the engine
may operate automatically.
- When the engine is ready to run
- When the hybrid battery is being
charged
- Depending on the temperature con-
dition of the hybrid battery
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H29
Special Features
Hybrid vehicles sound different than
gasoline engine vehicles. When the
hybrid system operates, you may
hear a sound from the hybrid battery
system behind the rear seat. If you
apply the accelerator pedal rapidly,
you may hear an unconventional
sound. When you apply the brake
pedal, you may hear a sound from
the regenerative brake system.
When the hybrid system is turned off
or on, you may hear a sound in the
engine compartment. If you depress
the brake pedal repeatedly when the
hybrid system is turned on, you may
hear a sound in the engine compart-
ment. None of these sounds indicate
a problem. These are normal charac-
teristics of hybrid vehicles.If any of following occur, it's a normal
condition if you hear a motor sound
in the engine compartment:
- After turning off the hybrid system,
the brake pedal is released.
- When the hybrid system is turned
off, the brake pedal is applied.
- When the driver door is opened.
When the hybrid system is turned
ON, the gasoline engine may acti-
vate or may not. In this situation, you
may feel a vibration. This does not
indicate a malfunction. When the
" " indicator illuminates, the
hybrid system is ready to begin driv-
ing. Even if the engine is off, you can
operate the vehicle as long as the
" " indicator is illuminated.The hybrid system contains many
electronic components. High volt-
age components, such as cables
and other parts, may emit electro-
magnetic waves. Even when the
electromagnetic cover blocks elec-
tromagnetic emissions, electro-
magnetic waves may have an
effect on electronic devices. When
your vehicle is not used for a long
period of time, the hybrid system
will discharge. You need to drive
the vehicle several times a month.
We recommend driving at least for
1 hour or 10 miles. When the
hybrid battery is discharged, or
when it is impossible to jump start
the vehicle, contact your HYUNDAI
dealer.
NOTICE

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Virtual Engine Sound System
(VESS)
The Virtual Engine Sound System
generates engine sounds for pedes-
trians to hear vehicle sound because
there is limited sound while electric
power is used.
What Does Regenerative
Braking Do?
It uses an electric motor when decel-
erating and when braking and trans-
forms kinetic energy to electrical
energy in order to charge the high
voltage battery.
Battery
Hybrid vehicle
- The vehicle is composed of a
high voltage battery that drives
the motor and air conditioner, and
an integrated 12V lithium ion
polymer battery with the HEV
battery that drives the lamps,
wipers, and audio system.
- The integrated 12V battery is
automatically charged when the
vehicle is in the ready ( )
mode.
Plug-in hybrid vehicle
- The vehicle is composed of a
high voltage battery that drives
the motor and air-conditioner,
and an auxiliary battery (12 V)
that drives the lamps, wipers, and
audio system.
- The auxiliary battery is automati-
cally charged when the vehicle is
in the ready ( ) mode.
When you start the hybrid
system with the shift lever in
P (Park), the " " indicator
illuminates on the instrument
cluster. The driver can drive
the vehicle, even when the
gasoline engine is off.
When you leave the vehicle,
you should turn OFF the vehi-
cle and place the shift lever in
P (Park). If you depress the
accelerator pedal by mistake,
or when the shift lever is not in
P (Park), the vehicle will
abruptly move, possibly result-
ing in serious injury or death.
WARNING

H31
Hybrid System Gauge
The hybrid system gauge indicates
whether the current driving condition
is fuel efficient or not.
CHARGE :
Shows that the energy made by
the vehicle is being converted
to electrical energy. (Regenerated
energy)
ECO :
Shows that the vehicle is being
driven in an Eco-friendly manner.
POWER :
Shows that the vehicle is exceeding
the Eco-friendly range.According to the hybrid system
gauge area, the "EV" indicator comes
on or off.
- "EV" indicator ON : Vehicle is driven
using the electric motor or the
gasoline engine is stopped.
- "EV" indicator OFF : Vehicle is driv-
en using the gasoline engine.
Battery State of Charge (SOC)
This gauge indicates the remaining
hybrid battery power. If the SOC is
near the "L (Low)" level, the vehicle
automatically operates the engine to
charge the battery.
However, if the Service Indicator ( )
and Malfunction Indicator Lamp (MIL)
( ) turn on when the SOC (State of
charge) gauge is near the "L (Low)"
level, have the vehicle checked by an
authorized HYUNDAI dealer.
❈The actual cluster in the vehicle
may differ from the illustration.
OAEPHQ048008/OAEPHQ048802
■Type A■Type B
OAEPH048522/OAEPHQ048009
■Type A■Type B