2012 All-New Porsche Carrera: Dynamics & Comfort (Part 5/12)

PORSCHE Euorpe: Official Press Release

The new Porsche 911 Carrera

New Technologies for Even Greater Dynamics and Comfort

The complete redesign of the chassis has improved sportiness and comfort alike in the new 911 Carrera. In the process, the 911 Carrera has further bolstered its leading position among high performance sports cars in terms of driving dynamics and agility.

The completely new rear axle significantly improves stability and precision. In addition – depending on model featured as standard or as an optional extra – the enhanced Porsche Active Suspension Management (PASM), PASM sports suspension with body lowered by 20 millimetres (0.79 inch), the enhanced dynamic engine suspension originating from the GT3, the new Porsche Dynamic Chassis Control (PDCC), the completely revamped electro-mechanical power steering, Porsche Torque Vectoring (PTV), the modified braking system and new wheels and tyres ensure driving performance of the highest order.

In both models, the 100 millimetres (3.94 inch) longer wheelbase ensures significantly greater driving stability at high speed. The wider front track width, 46 millimetres (1.81 inch) for the 911 Carrera and 52 millimetres (2.05 inch) for the 911 Carrera S, makes for additional driving stability and agility when cornering. The 911 Carrera features passive suspension as standard. The PASM suspension (ten millimetres lower) is available as an optional extra but features as standard in the 911 Carrera S.

Electro-mechanical steering with Porsche’s trademark precision and feedback

The new 911 Carrera sees Porsche’s first use of electro-mechanical power steering, which has been developed from scratch and is vastly more efficient than every other system on the market. The fundamental advantage compared with hydraulic power steering is the reduction in fuel consumption by at least 0.1 l/100 km. This is achieved as the steering system only requires energy when the driver needs it. Additional new functions further enhance comfort and safety. Specific feedback is passed to the driver through the steering wheel and negative or unnecessary influences are filtered out.

Even at low speeds, active self-alignment of the steering ensures that the steering wheel is automatically returned to the straight-ahead position. When braking on road surfaces with different levels of grip, a tug on the steering wheel imparts a steering input in the desired direction, making it easier for the driver to stabilise the vehicle and keep it in the desired lane. Power Steering Plus, available as an option, provides additional comfort, enabling assisted steering to be customised to the relevant speed and driving situation below 50 km/h (31 mph), for example when manoeuvring.

Porsche’s electro-mechanical power steering is based on a completely novel technical control concept. A vehicle status sensor within the steering system accurately calculates the force currently applied to the rack and pinion, which is then used to vary the appropriate steering torque. This ensures optimal steering feedback in every driving situation with good road surface contact. Useful information about the road surface and driving conditions is transmitted to the driver in full through the steering wheel; unwanted influences are filtered out, information such as jolts is filtered accordingly. This innovative technical control concept, allied with a robust mechanical design, was the only way of satisfying the stringent requirements in terms of the steering sensitivity in a Porsche.

2012 All-New Porsche Carrera: Dynamics & Comfort (Part 5/12)

2012 All-New Porsche 911 (991) in Detail: