911 Carrera GTS

Performance

The message is clear and unmistakable: force, power and dynamics. With direct fuel injection (DFI) and VarioCam Plus, the uprated 3.8-liter six-cylinder rear engine of the new 911 Carrera GTS models generates 408 hp at 7300 rpm.

Maximum torque is 310 lb.-ft. and both models achieve a top track speed of 190 mph. The Coupe accelerates from 0 to 60 mph in 4.4 seconds, the Cabriolet in 4.6. The optional Porsche Doppelkupplung (PDK) further improves acceleration, reducing these times to 4.2 and 4.4 seconds respectively.

The throttle response is even more direct and acceleration is even sportier. The engine power is 23 hp higher than that of the 911 Carrera S. This was made possible by the redesigned intake manifold, the modified cylinder heads and the optimized engine electronics.

Direct fuel injection (DFI)

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 1740 psi directly into the combustion chamber by means of electromagnetically actuated injection valves.

The spray and cone angles have been optimized 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 optimizes 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 3200 rpm and triple injection up to 2500 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 even greater efficiency.

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

Porsche Doppelkupplung (PDK)

PDK is available as an option for the new 911 Carrera GTS models. Gear changes take place in milliseconds, for vastly improved acceleration and lower fuel consumption.

In total, PDK has seven gears at its disposal. Gears 1 to 6 have a sports ratio, with the top track speed being reached in 6th gear. The 7th gear has a long ratio and helps to reduce fuel consumption even further. PDK is essentially two half gearboxes in one and thus requires two clutches – designed here as a double wet clutch transmission.

This double clutch provides an alternating, non positive connection between the two half gearboxes and the engine by means of two separate input shafts (input shaft 1 is nested inside the hollowed-out input shaft 2). The flow of power from the engine is only ever transmitted through one half gearbox and one clutch at a time, while the next gear is preselected in the second half-gearbox. During a gear change, therefore, a conventional shift no longer takes place. Instead, one clutch simply opens and the other closes at the same time.

PDK and the manual gearbox deliver power directly to the road. With the optional Sport Chrono Package Plus, you can make it even more direct, and even sportier. With a rush of adrenaline and euphoria, you are straight into the action.