The use of sequential twin parallel turbochargers is a world first on a four-cylinder diesel car. The system consists of two identical, small-diameter turbochargers.
At low engine speeds, a single turbocharger ensures engine responsiveness. It is then supported by a second turbocharger, which starts to operate in parallel between 2,600 and 3,200rpm according to the applied load and atmospheric conditions.
The entire range of engine speeds is therefore covered. The system is controlled entirely by the engine’s electronic control unit (ECU).
With the introduction of the new HDi engine, the 607 range now includes three engine options – 2.0 litre 136bhp HDi, 2.2 litre 170bhp HDi and a 3.0 litre V6 petrol engine. These engines are all available in a single trim level – Executive.