Official: Porsche introduces the Cayenne S Diesel

Article by Christian Andrei, on September 12, 2012

It was not a secret that Porsche will introduce a bigger diesel engine on the Cayenne, but today this model became official: ladies and gentlemen, this is the Cayenne S Diesel. Powered by Audi’s 4.2-litre eight-cylinder diesel engine with biturbo charging, the Cayenne S Diesel delivers 382 hp (281 kW) and offers a maximum torque of 850 Newton metres.

With these numbers, the SUV hits 100 km/h (62 mph) in 5.7 seconds and has a top speed of 252 km/h or 156 mph. Despite these performances, the Cayenne S Diesel remains a fuel-efficient SUV with NEDC fuel consumption of just 8.3 litres per 100 km (CO2: 218 g/km). This means that when is equipped with an optional 100-litre fuel tank, the vehicle has a total range of about 1,200 km or 745 miles.

In terms of design, the 2013 Porsche Cayenne S Diesel has the same features of eight-cylinder versions. Moreover, the brake system has been sized to handle the car’s power output, and it is identified by its silver brake callipers.

The front end features black fins. The model badge at the rear identifies it as a Cayenne S. According to the official press release, the 2013 Cayenne S Diesel will hit the market in January 2013 and will cost 77,684 euros in Germany – including 19 per cent VAT and country-specific features.

Press Release

Porsche Cayenne S Diesel

In the new Porsche Cayenne S Diesel, engine power and intelligent all-wheel drive interact in an incomparable way: 850 Newton-metres of torque and Porsche Traction Management (PTM). This is the first time that Porsche is employing an eight-cylinder diesel, which immediately assumes the top position in its market segment for power, torque and efficiency.

It is also the world's only diesel V8 to offer an automatic start/stop function in this market segment. While the Cayenne Diesel with a V6 engine represents top efficiency with as much sporty performance as possible, the new Porsche Cayenne S Diesel impressively demonstrates top sports performance with as much efficiency as possible. The new V8 engine with two turbochargers always keeps a powerhouse of energy in store for the driver to call up at any time; it reacts with sporty spontaneity and performs with excellent efficiency under all circumstances. The PTM distributes the engine's powerful propulsive forces according to the specific driving situation, precisely and individually to all four wheels; in interplay with the Cayenne chassis it converts this power into forward propulsion and dynamic performance with unrivalled effectiveness. The optional Porsche Torque Vectoring (PTV Plus) distributes engine power in an even sportier way.

The Porsche Cayenne S Diesel offers a driving experience that is typical of a Porsche and is yet completely new. It is emotional like a sports car, with regard to both its vehicle dynamics and its sound. Smooth engine running and the sound of an eight-cylinder reach the same levels as those of previous Porsche V8 engines. Yet, its diesel operating principle yields a level of fuel economy that makes the Cayenne S Diesel an ideal and comfortable touring vehicle for long trips: based on NEDC fuel consumption values, the car can cover about 1,200 km on a single fill of the optional 100-litre fuel tank.

The Porsche Cayenne S Diesel gets its very special character from the active PTM all-wheel drive system. It embodies the bundled Porsche competence in all-wheel drive technology. Its direct rear-axle drive gives it the driving behaviour of a rear-wheel drive vehicle - with all of the benefits in handling and precision. In a sporty and dynamic style of driving, the added effects of front-wheel drive develop in a way that is precisely adapted to the driving situation and enhances stability and traction. This situation-based intelligence of PTM also gives the Cayenne S Diesel excellent capabilities in classic measures of offroad performance. On surfaces with little grip - e.g. snow, mud or moist grass - PTM, in coordination with Porsche Stability Management (PSM), allows as much drive torque to be applied to each individual wheel as they can transmit effectively without loss of grip. Its dominant high-powered engine also makes the Porsche Cayenne S Diesel the ideal vehicle when it comes to towing and manoeuvring boat or horse trailers. Even when its maximum towing capacity of 3.5 metric tonnes is exploited, the Porsche Cayenne S Diesel still has ample power reserves in all of life's driving situations.

On its exterior, the new top diesel model is also a Cayenne S without compromises, and it bears the typical characteristics of the eight-cylinder variants. Black fins at the front highlight the open air inlets. Together with the silver-coloured brake callipers, this emphasises the sporty character of the new member of the model range. As in the Cayenne Diesel, "diesel" badges on both front wings refer to the operating principle of its V8 engine. The model logo at the rear identifies it as a Cayenne S. The standard Cayenne S III wheels create a visual accent and enable a high level of driving performance both onroad and offroad.

The most powerful Porsche diesel ever

The new eight-cylinder engine not only crowns Porsche's diesel line-up; it simultaneously takes top position in the market segment. 382 hp (281 kW) of power from 4.2 litres of displacement and 850 Newton-metres of torque qualify the new engine as the new benchmark. The engine delivers its tremendous torque between 2000/min and 2750/min, which forcefully propels the Porsche Cayenne S Diesel right from the start.

Energy-saving measures such as thermal management, electrical system recuperation and an automatic start/stop function limit its NEDC combined fuel consumption to just 8.3 l/100 km.

Porsche properties not only express themselves as superior torque and power. The first diesel eight-cylinder in a Porsche is also a fine example of smooth engine running and sound. Completely new algorithms were developed to control rail pressure, injection volumes and times - with the result that diesel-typical combustion characteristics have practically disappeared altogether: The V8 runs harmoniously with low vibration and without any annoying diesel-like background noise. On the contrary, its bass tones are strong and low in frequency, just like the sound that is familiar from other Porsche eight-cylinder engines.

Impressive performance: maximum charge pressure and high-performance radiator

The diesel eight-cylinder is - like the petrol engines from Porsche - configured as a classic V8 with a 90 degree cylinder bank angle. The engine block is made of grey cast iron, and the cylinder heads of aluminium. The fuel supply of the piezo-controlled injectors that spray fuel directly into the combustion chambers is routed via a common rail system, in which pressures of up to 2000 bar are built up. Two exhaust gas turbochargers supply the two cylinder banks; they have variable geometry (VTG) for better cylinder filling. To utilise the stored energy as effectively, the exhaust gas has a relatively high temperature as it enters the turbine. The compressor compresses the combustion air up to 2.9 bar, a peak value for production diesel engines worldwide. However, the heat generated in this process is undesirable. Therefore, the charge air is routed through the same high-performance intercooler that is used in the Cayenne Turbo. For one, it results in significantly more effective cooling than conventional heat exchangers; for another, the intercooler exhibits significantly less resistance and thereby keeps pressure losses very low.

High-Tech inside: special materials for optimal quality and long life

Charge pressures and exhaust gas temperatures demand very high-quality components in the engine. That is why, in this top diesel, Porsche is implementing pistons whose bowl-in edge is melted all around by laser beam in a controlled fashion, and this allows it to withstand especially high thermal and mechanical stresses. The exhaust valves consist of what is referred to as a super-alloy, which is especially heat resistant and originates from motorsport.

Clean power, strong sound: dual-line exhaust system

Much know-how and detailed effort also went into the exhaust system that consists of two completely separate exhaust lines for each cylinder bank, each of which contains an oxidation catalytic converter and a diesel particulate filter. These filters are produced in thin-wall technology and offer a very large surface area. This reduces the regeneration time and exhaust back-pressure, which in turn reduces emissions and fuel consumption. The exhaust system is made of stainless steel for long life, and it is air-gap throughout to keep heat losses as low as possible. In pretreatment of the exhaust gases, the Porsche Cayenne S Diesel offers cooled exhaust gas recirculation into the combustion chambers. This reduces peak combustion temperatures and thereby the nitrogen oxide content of the untreated raw gas.

All-wheel drive and chassis

In the new Porsche Cayenne S Diesel, the combination of a powerful eight-cylinder and eight-speed Tiptronic S has an ideal partner in the form of PTM active all-wheel drive. This Porsche Traction Management system was specially configured for the sporty, highly dynamic Cayenne models, because its broad range of torque distribution offers benefits in terms of vehicle dynamics, agility and traction pre-control and complements the performance-oriented character of the cars.

PTM also has the automatic brake differential (ABD) for improved traction control, anti-slip control (ASR) for improved vehicle stability and a switchable hill control assistant (Porsche Hill Control, PHC) for controlled descents on steep hills.

Porsche Traction Management with active all-wheel drive directly applies power to the rear axle. The extremely compact transfer case of the all-wheel drive is a so-called hang-on solution in a separate housing that follows the transmission. The multi-plate clutch that features electronic control by an electric motor regulates the distribution of drive power to the front axle with full variability, and there is no fixed base distribution. If slip increases at the rear wheels, e.g. during acceleration, a stronger response by the multi-plate clutch distributes more power to the front wheels. By permanently monitoring the driving state, the system is able to react to different driving situations as well as to driver wishes. This is enabled by auxiliary control of the active all-wheel drive system that is tuned to vehicle dynamics; it can react based on the driving situation and even preventively - before undesirable slip occurs at one axle. An example: When the driver steers into a bend, the lateral guiding forces of the steered wheels are increased by reducing the drive torque at the front axle, which enables high levels of agility and transverse acceleration. As the driver then accelerates out of the bend, the drive torque is optimally distributed for maximum traction at both axles.

Three offroad modes: offroad rocker switch

The wide-ranging offroad capabilities of the Porsche Cayenne S Diesel can be modified over various stages by a central offroad rocker switch on the centre console. All systems are then optimised for offroad use, with the goal of improving traction on unpaved surfaces. In offroad mode 1, all relevant systems in addition to the hill descent assist, such as ABS, are also switched to a traction-oriented offroad mode. If the Porsche Cayenne S Diesel is equipped with the air suspension and PASM options, the offroad setting is activated. It is also possible to select the special offroad level via the rocker switch for the air suspension system, in order to further increase the approach and departure angles and the ramp angle as well as fording depth.

If the driver selects offroad mode 2, the longitudinal clutch is locked up to 100 per cent for better traction in difficult offroad conditions. The electronically controlled rear differential lock of the optional Porsche Torque Vectoring Plus (PTV Plus) is integrated in the all-wheel drive control. Fully automatically, it provides for suitable metering of power on especially poor offroad surfaces. If a rear wheel begins to spin on a slippery or loose-packed surface, the differential lock restores traction by intelligently redistributing drive power to the other rear wheel. When conditions require it, another press of the offroad rocker switch selects offroad mode 3 which fully locks the rear differential.

Porsche Torque Vectoring Plus for even greater agility

Performance and stability of the Porsche Cayenne S Diesel can be optimised even further with the new optional Porsche Torque Vectoring (PTV Plus). PTV Plus operates with variable torque distribution to the rear wheels and an electronically controlled rear differential lock. PTV Plus improves steering behaviour and steering precision by specific brake interventions at a rear wheel; its control is based on the steering angle and steering rate, accelerator pedal position, yaw rate and vehicle speed. Stated more precisely: In a dynamic style of driving, turning the steering wheel results in slight braking of the wheel at the inside of the bend. This gives the rear wheel at the outside of the curve greater drive force, which generates additional turning force in the steered direction. This results in more direct and dynamic steering into the bend.

PTV Plus significantly enhances agility and steering precision at low and moderate speeds. The electronically controlled rear differential lock provides for better driving stability, especially when accelerating quickly out of fast driven bends or if wheelspin is occurring. Even on split roadway surfaces, or when roads are wet or snow covered, the system interacts with Porsche Traction Management and Porsche Stability Management to offer benefits in driving stability. In offroad use, PTV Plus reduces slip at the rear wheels. In addition, brake interventions are specifically adapted to offroad use. From the offroad rocker switch on the centre console, the rear differential lock can be locked up to 100 per cent.

Greater safety and comfort

In the Cayenne S Diesel, Porsche is introducing new and extended options to the SUV model series. The focus here is on further enhancing safety and comfort by assistance systems and features. But serious sports-oriented drivers will also find an extended range of options they can use to configure their Cayenne very individually.

New: adaptive cruise control with Porsche Active Safe (PAS)

Porsche Active Safe (PAS), available at the end of 2012, will give the assistance package of cruise control and adaptive cruise control even more intelligence and high performance. PAS also helps to avoid front-end collisions - even when the adaptive cruise control is deactivated. It utilises the front radar system to continuously monitor traffic ahead. If the system evaluates a situation as critical with a potential risk of front-end collision with a vehicle driving ahead, the brake system is preconditioned by slight contact with the brake pads, and the brake assistant is sensitised. With increasing level of risk for a front-end collision, visual and acoustic warnings are initiated, and the driver is also alerted to the need for intervention by a jolt at the brake pedal. If the driver reacts with insufficient pedal pressure, the system boosts the brake pressure within technical limits all the way to full braking pressure, depending on the situation. The PAS may be deactivated in the instrument cluster, if desired.

Extended: Porsche Dynamic Light system Plus (PDLS plus)

The Porsche Dynamic Light system (PDLS) has now been extended to include automatic main beam control and an intersection lighting function. In the case of automatic main beam control, a camera mounted to the rear-view mirror detects the light sources of vehicles ahead and oncoming vehicles and automatically switches between dipped and main beam. The system is active from a speed of 65 km/h, in order to avoid activation of the main beam within cities and villages. In the intersection light function, the navigation data is used to recognise intersections and merging roads. The system then simultaneously activates the left and right static cornering lights for optimal illumination. In the case of a merging road, only the static cornering light on the side facing the merging road is activated.

CDR Plus audio system

The previous two-tiered multimedia range of CDR and PCM will be enlarged starting in December 2012 with the addition of the new optional audio system CDR Plus. Technically, the system is based on the PCM and is comprised of eleven loudspeakers with a total output power of 235 Watt, a high-resolution seven-inch TFT touchscreen, radio with analogue and digital dual tuners. Stored media can be played into the system via the single CD/DVD drive, the USB port for various iPod and iPhone models and from USB memory sticks. They are operated from the CDR Plus audio system or the optional multifunction steering wheel. Other audio sources can be connected via the AUX interface; they are controlled directly at the connected device. Other useful options may be combined with CDR Plus such as a telephone module, DVD changer for six discs or reversing camera.

New functions for PCM: Jukebox, TMC Pro, speed limit indicator, digital radio, AHA App

For even more customised and nearly unlimited musical enjoyment, the optional Porsche Communication Management (PCM) now offers the added feature of saving music to the internal hard drive, also known as the Jukebox. The driver can now save and access up to 10,000 audio files or a maximum of 40 GB of music. Copying to the Jukebox is via the USB port of the universal audio interface via suitable USB memory storage media.

The traffic information service TMC Pro is replacing the previous TMC in Cayenne models for Germany, Austria and Switzerland - as part of the PCM for dynamic route computation. Unlike TMC, TMC Pro accesses data from over 4,000 data sensors located on motorway bridges, 5,500 sensor loops integrated in the roadway pavement and over 10,000 vehicles with FCD (Floating Car Data). This produces data of improved quality and timeliness, which gives the driver a significant advantage in the computation of alternative routes compared to the previously used TMC.

The optional speed limit indicator will be available as an extension to PCM with a navigation module starting around the beginning of next year. This information system uses a camera to detect speed limits, no passing zones and the ends of these zones. If a speed limit applies to wet pavement, a turning lane or specific times of day, or if it only applies to vehicles with trailers, for example, then the system compares the detected sign to information from the vehicle's rain sensor, navigation data, clock time or towbar. The applicable speed limit is shown to the driver on the TFT display in the instrument cluster and on the PCM screen. If the camera is unable to recognise a sign - e.g. due to heavy rain - then the speed limit stored in the navigation system is displayed.

Upon request, the PCM can be supplemented by a receiver for digital radio stations. The formats DAB, DAB+ and DMB Audio enable transmissions in significantly better sound quality compared to analogue radio. To guarantee optimal reception of the selected station, a DAB dual tuner is used which features automatic digital/analogue switching. Reception also depends on local digital network availability.

The AHA radio app integrates online functionalities into the PCM. The AHA radio app is available free-of-charge from iTunes for the iPhone and from the Android Marketplace for Android devices. This online service incorporates such sources as web radio, news feeds, podcasts and audio magazines. Google POI search is also offered, and the search results can be transferred to the PCM as a navigation destination. This makes it easy to quickly find an available parking space, a convenient nearby refuelling station or a good restaurant and be guided directly to it. For use via the iPhone, the customer needs the optional universal audio interface, or via an Android device the optional mobile phone preparation or optional telephone module.

Sport Chrono Package documents vehicle dynamics

The Sport Chrono Package is available as an option for the Porsche Cayenne S Diesel. It includes a chronometer on the dashboard and a performance display screen in Porsche Communication Management. The chronometer or accelerometer can be used to record the boosted performance data, e.g. in the form of lap times or transverse and longitudinal acceleration values. It is possible to display this data graphically via the PCM, e.g. to review the times.

Porsche Cayenne S Diesel Specifications

4.2-litre biturbo V8 engine with 382 hp (281 kW)
8-speed Tiptronic S
Porsche Traction Management (PTM) with active all-wheel drive
0-100 km/h: 5.7 seconds
Top speed: 252 km/h
NEDC fuel consumption: 8.3 l/100 km
CO2 emissions: 218 g/km

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