20
When Driving 
Vehicle electric 
devices
Vehicle electric 
devices
Accelerator OFF
Accelerator ONEnergy     
regeneration
ChargeBattery
Battery Power
Power Engine
Variable 
voltage 
alternator
Variable 
voltage 
alternator Engine
Tyre TyreCapacitor
CapacitorDC-DC converter
DC-DC converter
Kinetic energy
Electrical power
i-ELOOP System 
i-ELOOP is a regenerative braking system. When you depress the brake pedal or use 
engine braking, the kinetic energy that occurs is converted to electrical energy by the 
power generator and the converted electrical energy is stored in the rechargeable 
battery (capacitor and battery). The stored electricity is used as power to charge the 
battery and the vehicle's electrical devices.
• A variable voltage alternator is incorporated in the power generator which 
converts the kinetic energy to electricity and can generate electricity efficiently 
according to the vehicle conditions.
For details, refer to Section 4, “i-ELOOP”. 
• A capacitor is used to store large amounts of electricity instantly which can be 
utilized quickly.
• A DC-DC converter is incorporated which steps down the stored electricity to 
voltage useable by the vehicle's electrical devices.
 $ 9   @  &