911 Carrera S Cabriolet

Performance

The latest 911 has a new generation of engines with direct fuel injection (DFI), and significantly more power. 345 hp is generated by the 3.6-liter boxer (horizontally-opposed cylinder) engine and 385 hp by the 3.8-liter power unit.

The results are outstanding performance and increased fuel efficiency and emission values. All made possible thanks to DFI, VarioCam Plus, an improved lightweight construction, reduced friction and a number of detailed technical solutions.

Integrated dry-sump lubrication

The purpose of integrated dry-sump lubrication is to guarantee a reliable oil supply while reducing engine temperatures, even in sportily driven cars.

The oil reservoir is located inside the engine, making an external tank unnecessary. Four oil pumps remove the oil from the cylinder heads directly into the oil sump. A fifth pump in the oil sump directly supplies the lubricating points in the engine.

To prevent foaming, the oil is channelled through cylinders known as swirlpots. In this way, optimum lubrication is guaranteed at all times and the oil pressure is always maintained at the necessary level in order to ensure, for example, that hydraulic valve clearance compensation remains fully functional – a condition that is crucial to the power and emission characteristics of the engine.

To reduce power losses and increase efficiency, an electronically controlled oil pump supplies the lubricating points inside the engine as and when required. This means that the oil pump does not work so hard when there is less demand for lubrication. The benefits of an on-demand oil supply system are optimum efficiency, increased fuel efficiency and lower exhaust emissions.

Single-jet spray nozzles cool the piston crowns with oil from the main lubrication circuit – another detailed solution that helps to reduce the thermal load on the engine.

For the engine, all of these detailed solutions mean a consistent supply of oil regardless of gravitational loads, even in the most demanding track conditions.

Exhaust system

The stainless steel exhaust system comprises two independent and separate exhaust tracts. Its catalytic converters are highly temperature-resistant and heat up rapidly for effective emissions reduction.

Thanks to advances in emissions technology, they are able to meet strict emission standards, such as EU5 in Europe and LEV II in the USA.

Using stereo lambda control, two sensors continuously monitor the exhaust gas composition for each exhaust tract. A further sensor monitors the efficiency of the catalytic converters.*

In addition, a sports exhaust system is available as an option. This can be activated as desired using a button on the center console. If fitted in conjunction with the optional Sport Chrono Package Plus, the sports exhaust system is activated automatically when ‘Sport’ mode is selected.