The Panamera models are equipped with advanced emission control technology.
The figures are exemplary: vehicles manufactured by Porsche demonstrate that even high performance sportscars can achieve
comparatively moderate exhaust emission values in their respective category. This has been achieved in part by state-of-the-art
engine concepts, including the hybrid drive and diesel and petrol engines. In addition, a fast-heating catalytic converter
system ensures that the optimum operating temperature is reached quickly after the vehicle is started, thereby further improving
emission control system performance.
The petrol models and the hybrid feature stereo Lambda control. Each of the two cylinder banks has a separate Lambda control loop. This determines, via the engine management system, the optimum quantity of fuel, thus ensuring efficient emission control. On the V8 engines, this is assisted by an air injection system where a compressor pumps extra air into the exhaust tract during the catalytic converter warm-up phase for faster heating and, consequently, lower emissions.
The exhaust gas recirculation function on the Panamera Diesel returns some of the exhaust gases to the combustion process. This has the effect of reducing combustion peak temperature and, as a result, nitrogen oxide emissions. Of course, the engine also features an oxidation catalyst and a diesel particulate filter.
Other measures for improving fuel economy are the Auto start/stop function and electrical system recuperation, whereby the
vehicle battery is charged predominantly under braking. Under acceleration, on the other hand, the charging current of the
regulated alternator is reduced so that the engine does not need to work as hard to charge the battery.