This required extensively redesigning the combustion chambers, crankshaft, turbocharger and exhaust gas treatment. The new aluminium crankcase reduces the weight by 20 kg. This generation of the engine fulfils the requirements for the current exhaust emissions standard Euro 6d-temp and is already equipped for the next stage, Euro 6d. The CO2 emissions could be reduced by up to 10 g/km while simultaneously increasing the power-output and torque values by up to nine percent.
The 12V starter-alternator plays a crucial role in achieving these results. It will transform the TDI into a mild hybrid in the future. The regenerative energy serves as an electric booster during acceleration. The starter’s belt drive will also make the start-stop behaviour more comfortable. A coasting function with the engine shut off promises to reduce fuel consumption.
The production will also be more efficient: all versions of the new engine generation will have a uniform displacement of two litres, although two performance classes were defined (PC1 up to 120 kW and PC2 up to 150 kW), which differ in pistons, crankshaft group and turbocharging. Of course, the EA 288 evo can be fitted both longitudinally and transversely.
Natural-gas boom with high-tech
CNG (Compressed Natural Gas) is one of the quiet resources which must be increased as part of the mobility transformation. Due to the higher proportion of hydrogen, combustion is virtually free of particulate matter. In addition, approximately 20% less CO2 in comparison to diesel or petrol is generated during combustion. And CNG can even be considered to be CO2 neutral if it has been produced using renewable energy sources like wind, water or solar energy. Audi has already demonstrated the practical implementation in an industrial-scale pilot project.