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Home > Hybrid system overview > Driving the hybrid/plug-in hybrid vehicle > Energy flow

Energy flow

The hybrid system informs you about energy flow in various operating modes. While driving, the current energy flow is specified in 11 modes.

Vehicle stop

The vehicle is stopped.

(No energy flow)

EV propulsion

Only motor power is used to drive the vehicle.

(Battery → Wheel)

Power assist

Both the motor and the engine power are used to drive the vehicle.

(Battery & Engine → Wheel)

Engine only propulsion

Only the engine power is used to drive the vehicle.

(Engine → Wheel)

Engine generation

When the vehicle is stopped, the high-voltage battery is charged by the engine.

(Engine → Battery)

Regeneration

The high-voltage battery is charged by the regenerative brake system.

(Wheel → Battery)

Engine brake

Engine braking is used to decelerate the vehicle.

(Wheel → Engine)

Power reserve

The engine is simultaneously used to drive the vehicle and to charge the high-voltage battery.

(Engine → Wheel & Battery)

Engine generation/motor drive

The engine charges the high-voltage battery. Motor power is used to drive the vehicle.

(Engine → Battery → Wheel)

Engine generation/regeneration

The engine and regenerative brake system charges the high-voltage battery.

(Engine & Wheel → Battery)

Engine brake/regeneration

The engine braking is simultaneously used to decelerate the vehicle and to charge the high-voltage battery.

(Wheel → Engine & Battery)

Start engine to avoid battery discharge

If the engine is not turned on with the ENGINE START/STOP button in ACC or ON for a while, the battery can be discharged. Turn on the engine to prevent 12V battery from discharge.