KIA Niro: Hybrid Control System / Description And Operation

The Hybrid Electric Vehicle (HEV) uses hybrid power source (Engine, Electric motor), so its fuel efficiency is relatively high and exhaust emission is very small compared to the traditional vehicle which uses only engine as power source. It consists of the engine, motor, high voltage battery and control modules.

In Electric Vehicle (EV) mode, the HEV is driven by only the electric motor, but engine supports the motor in case the vehicle needs more power (HEV Mode).

The electric motor not only drives the vehicle but also generates electric energy during regenerative braking for charging the high voltage battery.

HEV Operation Mode and Power Flow

Driver Mode

Warning Lamp

Items

1. MIL Lamp

Description

• Lamp ON : Engine Management System (EMS) fault

Items

2. Service Lamp

Description

• Lamp ON : Hybrid related system fault

Items

3. READY Lamp

Description

After ignition START

• Lamp ON : HEV in normal condition is ready to drive (Engine may or may not start)
• Lamp OFF : HEV is not ready to drive

During driving

• Lamp ON : HEV is ready to drive
•  Lamp Blinking : HEV in faulty condition (HEV in limited operating mode)
• Lamp OFF : HEV is not ready to drive

Related Control Module

HPCU (HCU)

Items

4. EV MODE Lamp

Description

• Lamp ON : EV mode (Electric motor only)
• Lamp OFF : HEV mode (Engine running)

Related Control Module

HPCU (HCU)

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