|The new DS4 from Citroën. Click to enlarge.|
Citroën will offer the e-HDi micro-hybrid system as an option on the new DS4, to be revealed at the 2010 Paris Motor Show; the DS4 is expected to go on sale later in 2011.
DS4 will be launched with a choice of five Euro 5 engines. The two HDi diesels—an HDi 110 (available as an e-HDi version) and an HDi 160—are both fitted with Citroën’s Diesel Particulate Filter System. The three gasoline powerplants—VTi 120, THP 155 and the new THP 200—were co-developed with BMW. All engines are available with manual or EGS six-speed gearboxes.
DS4 can be specified with Citroen’s micro-hybrid e-HDi technology, which is available from launch on versions powered by the HDi 110 engine. The e-HDi system comprises:
- the engine;
- a new generation Stop & Start system, which instantly cuts out the engine when the car comes to a halt (red lights, traffic jams);
- a second-generation reversible alternator and an e-booster function that restarts the engine instantly (0.4 seconds);
- an electronically controlled alternator that recovers energy during braking; and
- an electronic gearbox system (EGS) with optimized gear changes.
All required features such as the radio, air-conditioning and steering functions remain in operation when the engine is stopped by the system. This technology can reduce the fuel consumption and CO2 emissions by as much as 15% in built-up urban environments.