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Rollover sensor for enhanced passive safety


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Überschlagsensor für erweiterte passive Sicherheit

ZUR DEUTSCHEN VERSION

Cayenne S

Brand-new design at the front, further enhancement of design at the rear, even more striking lines, as well as perfect interaction of convex and concave shapes and contours - these outstanding features accentuate the muscular stature of Porsche's new Sports Utility.

../../JPG/PORSCHE/POR00265.JPG, CAYENNE_S, photo by porsche 2007 In the process, the new Cayenne S has shifted its visual centre of gravity further down to the ground, thus providing an even more powerful and muscular look from every angle - sporting but nevertheless ideal for the toughest terrain. And what looks good also offers benefits in terms of aerodynamics, with the Cd drag coefficient down from 0.39 to 0.35.

More power on less fuel

Apart from the increase in engine size, direct gasoline injection in conjunction with camshaft management and VarioCam Plus valve control are among the fundamental improvements provided on the eight-cylinder power unit. Together with the significant enhancement of aerodynamics and the use of longer axle transmission ratios, this offers the costumer an allround package not only significantly improving the performance of the new Cayenne S on the road, but also reducing fuel consumption by a substantial amount: The 4.8-litre power unit develops maximum torque of 500 Nm (369 lb-ft) and now offers peak output of 385 bhp (283 kW), up by 45 bhp or 33 kW over the former model. At the same time fuel consumption in the Tiptronic S model is down significantly to an average of just 13.7 litres/100 kilometres (14.9 litres with manual gearbox), equal to 20.6 and, respectively, 19.0 mpg Imp. This means a significant improvement of fuel economy under real-life driving conditions by up to 15 per cent. Acceleration from 0 - 100 km/h, in turn, is down by two-tenths of a second on the manual gearbox version to 6.6 seconds, with the Tiptronic S completing the same exercise even four-tenths of a second faster in 6.8 seconds. And top speed, finally, is up from 242 to 250 km/h (150 to 155 mph) on the automatic version and 252 km/h (156 mph) on the manual gearbox model.

Sports Button for even more dynamic performance

More than ever before, the new Cayenne models allow the customer to determine and specify the character of the vehicle himself - or herself. All he or she has to do is press the Sports Button enabling the driver to choose either the Standard or the Sports setup. Depending on the level of equipment in the vehicle, the Sports Button influences the gas pedal control map, the automatic transmission, the optional sports exhaust system (on the Cayenne S with Tiptronic S only, PASM damper management and PDCC anti-roll control.)

Transmission offering even greater motoring comfort

The Cayenne S comes as standard with a six-speed manual gearbox appropriately modified to match the more powerful engine with its extra torque. Hence, the gear teeth are made of an even stronger material and the bearings have been optimised. Higher engine output and the improved drag coefficient allow the use of a longer final drive transmission ratio without making any concessions in terms of agility and driving dynamics. Indeed, these improvements not only serve to reduce fuel consumption, but also enhance motoring comfort on long journeys thanks to the reduction of engine speed. The manual gearbox is combined as standard with the PDOA Porsche Drive Off Assistant supporting the driver when setting off on an uphill gradient. PDOA prevents the vehicle from rolling back in such a situation by automatically intervening in the brakes: As soon as the driver engages the clutch, the system reduces brake pressure and the driver is able to set off smoothly in the Cayenne S. The Cayenne S is also available as a further option with modified, upgraded six-gear Tiptronic S incorporating a similar holding function to prevent the vehicle from rolling back on an uphill gradient. The Cayenne S with Tiptronic S comes as yet a further option with a sports exhaust incorporating a modified main silencer for an even more voluminous and throaty chortle typical of a large V8. The system as such is activated and adjusted via the new Sports button, engine sound being masterminded as a function of load, road speed, engine speed, and the gear currently in mesh. The sports exhaust is recognisable at first sight by its striking double tailpipe covers made of chrome-plated stainless steel.

Suspension with new options: PDCC anti-roll management

More than ever before the customer opting for the Cayenne S is able to choose his or her very own suspension. Right from the start, the steel spring suspension offers excellent conditions for allround use of the vehicle. Then, proceeding from this very good starting point, air suspension and PASM Porsche Active Suspension Management enable the driver to set the standard of comfort and sporting performance to his very own, personal requirements. Switching over to the new generation of Cayenne models, Porsche is introducing yet another option in suspension management: PDCC Porsche Dynamic Chassis Control teaming up if required with air suspension and PASM. PDCC is a continuous body roll management system limiting the side angle of the vehicle in bends and almost fully preventing any body sway in nearly all situations. The result in the Cayenne S is not only a significant enhancement of handling in every respect, but also substantially greater driving stability, for example when changing lanes at high speeds. PDCC also features so-called "Skyhook" control able to register and set off bumps on the road, thus helping to significantly improve driving comfort wherever appropriate.

"Smart" all-wheel drive and enhanced PSM

PTM Porsche Traction Management permanent all-wheel drive spreads out drive power to the wheels in accordance with individual, current requirements. In the basic mode 62 per cent of the engine's power goes to the rear, 38 per cent to the front wheels. Depending on driving conditions, a multiple-plate clutch operated by an electric motor and controlled electronically may feed up to 100 per cent of the engine's power to either the front or rear. A further point is that the map-controlled longitudinal lock as well as the rear axle differen-tial available as an option not only respond to a lack of traction on the axles, but also follow sensors measuring the speed of the vehicle, its lateral acceleration, the steering angle, and operation of the gas pedal. As a result, PTM is able to calculate the optimum locking action required and distribute drive force accordingly. In practice this means excellent driving stability, improved steering, and better control of the vehicle under dynamic driving conditions. Enhanced to an even higher standard, PSM Porsche Stability Management coming as a regular feature consistently interacts with PTM Porsche Traction Management. PSM now offers several additional functions, pre-loading of the brake system applying the brake pads slightly on the brake discs from the start as soon as the driver takes back the gas pedal abruptly in order to shorten the time required for brake response. The Brake Assistant, in turn, provides the maximum brake pressure required in an emergency, as soon as it detects emergency operation of the brakes. Upgraded trailer stability control, finally, recognises any pendulum or sway motion of a trailer and intervenes as required by activating the brakes. And the new offroad-ABS brake system detects loose terrain and rough conditions beneath the vehicle, applying the brakes appropriately on both sides in order to decelerate the vehicle in a controlled process.

New rollover sensor for extra safety

Two full-size airbags for the driver and front passenger, two thorax side airbags, and two curtain airbags in the roof frame all contribute to the high standard of passive safety offered by the Cayenne S. Apart from collisions at the front and rear as well as the side, the sensors now for the first time also recognise the possible risk of the vehicle rolling over, automatically activating the belt latch tensioners and curtain airbags whenever this is the case.

Free rein for even greater individual style and personal choice

The Cayenne S comes as an option with bi-xenon headlights combined with a new dual-function headlight beam control system: As in the past, additional static headlights come on automatically as soon as the driver turns the steering to a certain, relatively wide angle, thus illuminating the area sideways in front of the vehicle. And now this system is supplemented by dynamic headlight beam control activated in response to even a minor change in the steering to illuminate upcoming bends and serpentines even better than before. Another feature now also available for the first time is an automatic tailgate opening and closing with utmost convenience at the touch of a button, the highly convenient power lift function. The panorama roof system, in turn, is yet another highly attractive option, this electrically operated system consisting of three variably adjustable glass modules as well as a grey-tinted security glass segment fitted firmly to the body. Almost four times the size of the conventional sliding/vent roof, the panorama roof covers an area of approximately 1.4 square metres or 15.1 square feet, spanning almost the entire roof of the Cayenne S from front to rear and side to side. Sound systems developed specifically for the Cayenne S and tailored to the vehicle's require-ments are available for the audio enthusiast. The top-of-the-range offer is the BOSE Surround Sound System incorporating no less 14 loudspeakers with overall output of 350 Watt. New, optional loading space management helps to keep everything tidy and properly arranged in the luggage compartment. The system includes rails integrated in the floor of the luggage compartment, a robust telescopic extension bar and belt rollers enabling the driver and passengers to load and unload the vehicle conveniently and safely at all times.

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porsche

Porsche Press Information, September 2007

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