Peugeot 308: Hybrid system

1. Petrol engine
2. Electric motor
3. 6-speed or 7-speed electric dual-clutch automatic gearbox (e-DCS6/7)
4. 48 V traction battery
5. 12 V accessory battery
6. DC/DC converter
7. Belt starter

The 48 V hybrid technology requires no connection to charge the traction battery.

The Hybrid system does not operate continuously, but is activated according to the state of the vehicle, the state of charge of the traction battery, the thermal comfort of the passenger compartment (switching on the heating or air conditioning), the driving conditions (acceleration, deceleration, braking, engine start-up) and the road conditions (uphill, downhill):

- The vehicle always starts with the petrol engine to ensure the efficiency of the catalytic converter and the availability of the brake assist.

- In normal driving, the petrol engine and electric motor work together or separately to optimise fuel consumption and electrical energy or to charge the traction battery.

- During the acceleration phases, the electric motor provides an additional boost to reach the torque needed as fast as possible and to improve the acceleration at low speed.

- During the deceleration phases, the electric motor charges the traction battery, using the inertia of the vehicle.

- The driving in all-electric is possible for parking manoeuvring, for 20 mph (30 km/h) speed zones in city, on urban and country roads with smooth driving and on motorways in slight deceleration or downhill.

The electric motor is integrated into the automatic gearbox.

The DC/DC converter provides the link between the 12 V accessory power supply and the 48 V traction power supply.

The belt starter restarts the petrol engine after driving in all-electric.

PresentationRechargeable hybrid system