. The 911 Cabriolet has a lot to offer: its body features more innovative light-weight components than ever before. The consistently evolved composite design – which now consists of more aluminium, less steel and new composite materials – once again cuts the weight of the bodyshell by around seven percent, without making any compromises in terms of stability, rigidity and safety, which are all at least at the same exemplary level set by the predecessor model.
To achieve this,
The composite component consists of three elements: a so-called Organo sheet, additional die-cast ribs and a structural foam. Organo sheets are pre-fabricated, highly sturdy semi-finished products made of fibre-glass reinforced plastic. These sheets are cut and reformed as part of a multi-stage process for use in the 911 Cabriolet. In the same process step, the component is equipped with a ribbed pad made of die-cast plastic. In the last process step, an additional layer of structural foam is added to the hybrid component. This layer expands when exposed to heat during the painting process to thus secure the reinforcement within the A-pillar cross-section. The A-pillar itself consists of super high strength sheet metal components such as boron steel.
An increase in the amount of aluminium used lies at the core of the evolved, light-weight design of the new 911 generation – in both the
In addition to high-strength steels, more extruded aluminium profiles were also used in the bodyshell, such as for the front and rear longitudinal members, inner and outer door sills and floor reinforcements. Their share has been increased from three to 25 percent.
Up to now, one disadvantage of aluminium die-cast parts had been the necessary thermal treatment following die-casting. This step is required to lend components the desired material properties that are crucial for crash performance, for example. Thermal treatment therefore represented a separate and thus energy and time-consuming step in the production process. In the new 911,
Materials and production processes define the ideal connection technology: welding, bonding, clinching, screw connections – no less than ten methods are involved in assembling the body of a new 911. One new feature, for example, is friction welding with countersunk head bolts to link components made of aluminium and steel. In this process, the steel bolt is pressed through the aluminium at such a high speed that friction causes the countersunk head bolts to merge with the steel component, creating a particularly strong connection.
The body of the new 911 consists of a multi-material mix and is thus taking the next big step in intelligent light-weight design, advancing the weight reduction strategy started by the predecessor model. At the same time, the evolved body concept also guarantees higher rigidity. Compared with the predecessor model, the 911
Further information as well as film and photo material in the
The consumption and CO2 emission values were calculated according to the new Worldwide Harmonised Light Vehicle Test Procedure (WLTP). The NEDC values derived from this must continue to be specified for the time being. These values cannot be compared to the values calculated based on the previously used NEDC measuring procedure.
Further information on the official fuel consumption and official, specific CO2 emissions of new passenger cars is available in the publication entitled “Guidelines on fuel consumption, CO2 emissions and power consumption of new passenger cars”, which is available free of charge from all sales outlets and from Deutsche Automobil Treuhand GmbH (DAT).
Model Range 911 (Typ 992): Fuel consumption combined 9.1 – 8.9 l/100 km; CO2 emissions 208 – 205 g/km