The Peugeot 308 CC will be the first model in the Peugeot range to benefit from a new 1.6 liter 112 bhp (84 kW) diesel engine. This new 1.6 liter HDi FAP diesel engine has been designed to meet the requirements of the new Euro 5 emission standards. It also benefits from a number of improvements over the current 110 bhp unit with improved performance in terms of flexibility and responsiveness, as well as noise reduction, while at the same time reducing fuel consumption and CO2 emissions.
The new four cylinder engine with a capacity of 1,560 cm3 and eight valves, has a maximum torque output of 270 N·m (199 lb-ft) at 1,750 rpm, an increase of 12.5% over the current engine, and during overboost, 285 N·m (210 lb-ft) compared to 260 N·m. It also has a very wide operating range with high levels of torque available at all times, ensuring good driveability and reduced fuel consumption on a day to day basis: 135 N·m (100 lb-ft) from 1,000 rpm, 242 N·m (178 lb-ft) at 1,500 rpm, 270 N·m from 1,750 to 2,000 and 224 N·m (165 lb-ft) at 3,500 rpm. Its maximum power output is 112 bhp at 3,600 rpm.
Between this new 1.6 liter HDi and its predecessor, more than 50% of the parts have been entirely redesigned. For example, like the new V6 3.0 liter HDi and 2.0 liter HDi diesel engines that were launched earlier, Extreme Combustion Chamber System (ECCS) technology is much to the fore. (Earlier post, earlier post.)
This combustion chamber design offers:
A lower compression ratio (16.0 compared to 17.5 previously) for enhanced performance and reduced emissions (including NOx).
An increase in the diameter of the combustion chamber (+10%), helping to reduce the quantity of unburnt fuel as a result of less contact with the chamber walls.
A reduction of the swirl (air movement in the combustion chamber) of nearly 10%, thereby reducing heat loss against the walls.
ECCS technology is combined with a new common rail injection system (Continental Automotive Systems) where the injection pressure is increased to 1,650 bars (compared to 1,600 previously) as well as new piezo-electric injectors with seven apertures (instead of solenoid injectors with six apertures as fitted to the previous 1.6 liter HDi diesel engine).
The engine management software has also been entirely redesigned to give this unit more comprehensive injection mapping (up to 5 injections per cycle), improved efficiency and better diagnostics for after-sales service. This helps to improve the homogeneity of the air/diesel fuel mixture for maximum performance, reduced fuel consumption, a reduction of emissions at source and quieter combustion.
The engine also uses a Honeywell Turbo Technology variable-geometry turbocharger optimized in terms of its size. Being smaller, it has a lower inertia, reducing response times to a minimum. An improved exhaust gas recirculation system (EGR valve) and the reduction of internal friction losses allows maximum enhancement of engine efficiency while minimizing potential energy losses. Like its predecessor, this 1.6 liter HDi comes as standard with a diesel particulate emission filter (FAP) with a service life of 112,000 miles.
This new engine will be available in the 308 CC in both Sport and SE trim levels and will be known as the HDi 112.