Image credits: © Porsche.

2006 Porsche Cayenne

Honed to satisfy the world's most demanding band of engineers, the Porsche Cayenne's compact 3.2-liter V6 engine is designed around a lightweight cast-iron crankcase, placed lower in the engine cradle for a better center of gravity and crisp, nimble handling.

The Cayenne is powered by a 3.2-liter naturally aspirated V6 engine developing a total output of 247 hp (SAE) at 6,000 rpm and maximum torque of 229 lb-ft between 2,500 and 5,500 rpm. With a top track speed of 133 mph, the Cayenne with manual transmission will take you from 0 to 60 miles per hour in 8.5 seconds, while the Tiptronic S model accelerates 0 to 60 miles per hour in 9.1 seconds.

The entire cooling system has been specially designed for heavy-duty operation including prolonged highway speeds, difficult, off-road terrain and carrying or pulling heavy loads. A special coolant management system heightens control over operating temperatures throughout the engine. While 20% of the coolant is supplied to the crankcase, the remaining 80% cools the cylinder heads using proven cross-flow technology that stabilizes operating temperatures and reduces wear.

2006 Porsche CayenneExcess heat is extracted from the oil using a dedicated oil cooler. An oil reservoir located inside the engine saves space and reduces weight to ensure oil delivery precisely where it's needed during extreme driving conditions. Indeed, the Cayenne can climb, traverse and descend gradients up to 45 degrees

One of the key features of the new Cayenne V8 engine is our patented VarioCam variable valve technology. In the simplest terms, VarioCam continually adjusts intake valve timing based on engine speed to enhance performance in all driving situations.

Operating under direct control of the Motronic engine management system, VarioCam uses a rotary-vane actuator on each bank of cylinders to continually adjust the phase angle of the intake cam.

The result is an ingeniously simple and highly effective means of improving power and torque throughout the rev range while simultaneously reducing fuel consumption.

Another important feature of the VarioCam system is hydraulic valve adjustment. In addition to reducing engine noise, this technical feature helps minimize emissions during warm-up. Better yet, there's no need for regular valve adjustment.

To reduce fuel consumption and exhaust emissions while improving power and low-end torque on the Cayenne's V6 engine, Porsche engineers have fit both the inlet and exhaust camshafts with a new variable valve timing system.

The Cayenne's computerized Motronic engine management system continuously adjusts each cylinder's two inlet and exhaust valves by means of a roller cam follower with hydraulic valve clearance adjustment.

2006 Porsche CayenneThe split-second precision of the Cayenne V8 and V6 powerplants is controlled by Motronic ME7.1.1, a robust, highly intelligent engine management system that balances impressive power with impeccable smoothness. Proving that the Cayenne's brain is indeed a match for its brawn.

The Motronic system continuously monitors a wide range of sensors and engine components. In mere milliseconds, streams of data are compared with corresponding sets of reference values. Based on this comparison, the system precisely adjusts key engine functions, such as the ignition or fuel injection, for optimal performance in all driving conditions. Other key systems that are plugged into Motronic management include onboard diagnostics and cylinder-specific knock control, with automatic adaptation to any change in fuel quality.

The entire process is seamless and automatic, resulting in greater levels of power and torque, as well as better fuel economy and lower emissions in the exhaust stream.

The Motronic system also manages air flowing into the engine for maximum levels of performance. The system regulates boost pressure on the Cayenne Turbo, and variable resonance induction on both the Cayenne and Cayenne S models.

The air intake system on the Cayenne Turbo and Cayenne S models features an advanced multi-process technology and resonance induction to maximize the engine's ability to breathe. And take your breath away. The dimensions of the inlet manifold are matched with tuned inlet ports to achieve a much richer and flatter torque curve.

2006 Porsche CayenneThe Cayenne model also features a resonance induction system with a variable-length intake manifold. This inventive engineering concept uses pressure waves generated by the opening of the inlet valves to increase the density of the incoming air—which, in turn, increases the amount of energy released during combustion. Depending on engine speed, the system selects one of two intake tubes. At lower speeds, the longer tube is employed to maximize low-end torque. At around 4250 rpm, the system switches to a shorter intake tube in order to maximize power output with a more eager throttle response—a smart move by any measure for enhancing the pure joy of piloting a Porsche.

All Cayenne engines feature a static high-voltage ignition system with separate ignition coils on each individual spark plug. This method improves combustion for more power with better fuel economy, reduced emissions, less maintenance and longer spark-plug life. The sequential fuel injection system is equally advanced. Every injector is served by a returnless fuel supply system, with a precise air/fuel mix that is continuously adjusted in response to power requirements and emissions readings. The result? Easy on fuel. (concept carz) Easy on the environment.

The sporting performance of our latest SÚV model is enhanced even further by a new six-speed manual gearbox, designed exclusively for the Porsche Cayenne.

A short-throw operation and precise gear linkage combine to deliver an engaging immediacy and power. A dual-mass flywheel and cable-operated gearshift reduce noise and vibration for added comfort, while a lightweight gearbox casing forged from die-cast aluminum adds to the exceptional handling you enjoy on-pavement.

Off-road, the transmission's design proves equally exemplary, excelling in wading depths over one and a half feet and gradients up to 45 degrees.

Porsche Drive Off Assistant, a new manual-transmission feature similar to the Hill Holder system on Tiptronic models, is on hand for hill starts. The system prevents the vehicle from rolling backward on slopes when starting from a full stop by automatically applying the brakes until the clutch is released and Drive is set in motion. As the clutch engages, the system gradually releases the brakes, allowing you to set off safely and reliably on steep gradients.

Engine-drag torque control— another electronic driving aid—assists with slow and steady descents down challenging mountain roads by applying selective braking as needed on individual wheels at speeds up to 12.5 mph.

The clutch pedal, like the brake and accelerator pedals, is heavily ribbed for superior grip in work shoes or snow boots. The feeling underfoot is remarkably light, considering the huge loads the Cayenne is capable of carrying and towing.

The Porsche Cayenne's synthesis of SÚV versatility and sports car performance is clearly seen— and, more importantly, felt—in a six-speed transmission capable of transforming the Cayenne's engine torque into a controlled delivery of power in all terrain, while tailoring shift points to your particular style of driving at the same time.

Tiptronic S offers the full advantages of an automatic transmission with the fun and immediacy of manual shifting. Gear ratios have been carefully selected for a seamless flow of power with virtually no interruption in drive to the wheels.

2006 Porsche CayenneIn automatic mode, Tiptronic S makes the kind of decisions you would make if you possessed over 50 years of racing experience. The system continuously adjusts gearshift patterns to suit your driving style, ranging from Economy for optimal fuel efficiency in everyday driving, to Sport for maximum performance with downshifts for more rapid acceleration. The system also offers a kick-down function, which automatically selects a lower gear for full acceleration when merging or passing.

As you travel, Tiptronic S monitors your driving tendencies and road conditions, then selects the most appropriate shifting program. The system even adapts its gearshift pattern in low-range mode for the optimal delivery of power during off-road or towing excursions.

Move the center console's shifter into the manual slot, and the system automatically relinquishes gear selection to the driver. Tip the gearshift lever forward and backward to manually change gears, or use the steering wheel's rocker switches. Tiptronic S automatically matches engine revs to appropriate gear ratios and prevents gearshifts that would over-rev the engine.

Naturally, the system's intelligence covers a wide range of driving conditions. When starting from cold, for example, Tiptronic S automatically suppresses low-rev up-shifts to help accelerate warm-up of the catalytic converters. Once up to speed, the system responds to rapid throttle movements by selecting a more active gearshift pattern.

Únlike conventional automatic gearboxes, Tiptronic S does not upshift when you lift off the throttle heading into a corner, and then downshift on exit because speed has fallen off. This enhances overall stability for better control and safety at speed.

During heavy braking, a lower gear is automatically selected. An incline sensor also improves shifting by enabling the system to modify its shift points for better uphill acceleration and more effective engine braking on descents.

All three Cayenne models come equipped with one of the most advanced driver aids ever featured on a standard production vehicle— Porsche Traction Management (PTM). While incredibly sophisticated, the fundamental concept is extremely simple: PTM actively distributes engine torque to the wheels that can use it most effectively for optimum all-terrain performance.

At the heart of Porsche Traction Management is a permanent four wheel- drive system with a lockable center differential. Power is distributed using a standard torque split of 38% to the front axle and 62% to the rear. This rear-wheel bias provides stable grip on a variety of surfaces, along with a level of feedback and feel for the road that is pure Porsche. Úp to 100% of the torque can be delivered to either axle as driving conditions dictate.

PTM doesn't rely solely on traction, or the absence of it, in meting out power. Sensors measure speed, lateral acceleration—even steering wheel and throttle positions—before calculating the amount of power to be distributed to each axle. The payoff? Úncanny agility through corners and better stability when changing lanes at speed or driving in snow and ice.

If one of the wheels does lose traction, Porsche Traction Management uses the Automatic Brake Differential system to apply braking on that wheel. Torque that would otherwise be delivered to the slipping wheel is fed to the opposite wheel instead. If both wheels on one axle are in danger of slipping, the Cayenne's electronic engine management system invokes Anti-Slip Regulation to reduce power and restore grip.

By combining these functions, PTM ensures resolute traction in almost any kind of weather.

For added involvement and versatility, PTM offers you a choice of driving options. Úsing a single control in the center console, the driver can select between 'high range' and 'low range' modes.

In High-Range mode, the transmission is configured for optimum performance on paved surfaces. Low-range mode reduces the gearing to accommodate more challenging off-road driving, or provide maximum traction when towing a heavy trailer. Once Low-Range mode has been selected, the same control can be used to lock the center differential for maximum traction, and in difficult terrain and demanding conditions.

The idea of a Porsche accelerating down a highway or roaring around a racetrack is commonly accepted, but navigating between boulders on a forest trail may take some getting used to. Únless, of course, you're aware of our many rally victories and long history of offroad competition.

The Porsche Cayenne is engineered with some of the most advanced off-road technology ever featured on a production vehicle. Its exceptional all-terrain prowess is rooted in permanent all-wheel drive and integrated off-road systems. Advanced technologies ranging from Porsche Traction Management to ABS brakes and Porsche Stability Management interact flawlessly to deliver exceptional traction on any surface.

For more challenging terrain, simply shift the transfer gearbox into 'Low Range' mode and you are ready to go. The Cayenne Turbo air-suspension system allows you to increase the ground clearance setting to 10.75 inches (Special Off-road Level) for safely navigating the most serious off-road obstacles. This air-suspension system is optional on both the Cayenne and Cayenne S.

Need to ford a stream? With its high-level air intake, transmission ventilation and fully encapsulated door-sill seal, the Cayenne can navigate a water crossing up to approximately a foot and a half in depth.

An optional Advanced Off-road Technology Package (AOTP) goes even further in equipping each of the Cayenne models for mastery over the most daunting terrain. A battery of enhancements ranging from enhanced side-sill, fuel tank and rear axle protection to a steel plate engine bay guard and headlight cleaning system accompany the addition of two more advanced off-road systems with this package.

The first of these systems is an electronically variable and lockable rear differential, which automatically redistributes torque to stabilize the vehicle upon detecting slippage at either of the rear wheels. When low-range gearing is selected, the differential can also be locked using a center-console control to provide both rear wheels with up to 100% of the engine's power.

A second key system in the AOTP package is a pair of front and rear anti-roll bars that are hydraulically disengageable. By splitting each anti-roll bar into two separate sections, the normal stiffness of the Cayenne suspension can be reduced to give each wheel more freedom of movement. For safety, the bars automatically reconnect at approximately 30 mph.

When the dust settles, it's clear that each of the Cayenne models is uniquely engineered to tackle varied terrain from mud and rock and sand to winding ribbons of pavement.

Source - Porsche

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