Since the end of 2013, Citroën has rolled out a new generation of diesel engines called BlueHDi. These drastically reduce nitrogen oxide (NOx) emissions and lower CO2 emissions by up to 4%, thus providing technology to comply with the more stringent Euro 6 regulations.
The BlueHDi 100 manual gearbox and the BlueHDi 120 S&S six-speed manual gearbox, with a capacity of 1,560cm3 deliver maximum power of, respectively, 73kW (99hp EEC) at 3,750rpm and 88kW (120hp EEC) at 3,500rpm. The torque at 1,750rpm (higher than the preceding generation’s) is 254 Nm for the BlueHDi 100 manual unit and 300 Nm for the BlueHDi 120 S&S 6-speed manual unit.
The Stop & Start technology with an upgraded starter used with the BlueHDi 120 engine offers numerous advantages, including no noise when the car is stopped, lower fuel consumption and reduced greenhouse gas emissions. The engine cuts out when you come to a stop and the gearbox is in neutral and the clutch pedal is released. When the clutch pedal is pressed down again, the engine restarts within about 500ms, or less than the time needed to shift into gear.
The BlueHDi 120 S&S with a six-speed manual gearbox delivers combined cycle consumption of 78.5mpg and CO2 emissions of 95g/km with ultra-low rolling resistance tyres.
Citroën’s BlueHDi engines already meet the future Euro 6 standard thanks to an innovative exhaust line featuring:
-an oxidation catalyser located at the engine exhaust manifold to eliminate the hydrocarbons (HC) and carbon monoxide (CO) coming from the fuel combustion
-a Selective Catalytic Reduction (SCR) module located upstream of the particulate filter to transform up to 90% of nitrogen oxide (NOx) into water vapour (H2O) and nitrogen (N2), both non-toxic, through the injection of Adblue®* (a mixture of water and urea)
-the additive particulate filter invented by PSA Peugeot Citroën, which made its world debut in 2000. It eliminates the number of particulates by up to 99.9%.
An innovatively structured exhaust line with a unique set of technologies: the SCR catalyser positioned upstream of the additive particulate filter is the only post-process system capable of reducing NOx emissions by up to 90% while decreasing CO2 emissions by up to 4%.
*The Adblue® is stored in a 17 litre tank in the rear of the vehicle. This quantity is sufficient for a range of 20,000km. The tank can be easily refilled through the tank opening located in the trunk.