Efficiency is about getting more from less, and direct fuel injection (DFI) is fitted as standard. With millisecond precision, DFI injects fuel at up to 120 bar directly into the combustion chamber by means of electromagnetically actuated injection valves.

The spray and cone angles have been optimised for torque, power output, fuel consumption and emissions, thus ensuring homogeneous distribution of the air/fuel mixture and, consequently, efficient combustion.

In the direct injection system, the EMS SDI 3.1 engine management system adjusts the injection timing individually for each cylinder and the injection quantity for each cylinder bank. This optimises both the combustion curve and fuel consumption. A hot-film air mass meter takes care of the airflow, so that the combustion chambers contain exactly the right mixture at all times.

Dual injection is implemented at engine speeds of up to 3,200 rpm and triple injection up to 2,500 rpm. The required quantity of fuel is distributed to two or three successive injection processes per cycle.

This strategy achieves faster heating of the catalytic converters after a cold start and produces greater torque in the upper load range.

DFI improves the internal cooling of the combustion chamber by forming the mixture directly in the cylinder. This has made it possible to increase compression (12.5:1), resulting in more engine power and greater efficiency.

Injection is regulated by the electronic engine management system. The exhaust gas cleaning system ensures that emissions remain below the limits of the Euro 5 emission standard, thus helping to protect the environment.