موتور V10
توان:605 اسب بخار در 8000 rpm
گشتاور: 435 lb.-ft
گنجایش:5.7 لیتر
وزن موتور:472 پوند (214 کیلوگرم)
سرعت: (330 کیلومتر بر ساعت(
0 تا100 کیلومتر بر ساعت) :3.9 ثانیه
0 تا 160 کیلومتر بر ساعت : 7 ثانیه
0 تا 200 کیلومتر بر ساعت :10 ثانیه
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Body and Chassis
Porsche’s motor racing division designed and developed the Carrera GT’s body structure. The monocoque combines all structural functions. Unlike a conventional body shell made from numerous separate components, the monocoque is made from only a few elements that are bonded together in a high-pressure furnace to form a single or mono-structure that is exceptionally rigid and strong. Carbon fiber reinforced plastic (CFP) is the generic term for composite fiber materials that were developed primarily for aerospace applications but have been widely applied to motorsports vehicle construction. These materials provide supreme performance through their combination of minimum weight and maximum strength and stiffness. On the Carrera GT, CFP is used for the chassis, which includes the windshield frame (which is reinforced by a steel core) and supplemental safety bar system, engine/transmission support frame, doors, hoods, fenders, underfloor tray and even in many interior components.
CFP is constructed from bonded layers of materials, including carbon fiber tissue, resin and aluminum or plastic honeycomb material that can be nearly an inch in thickness. Aluminum inserts are laminated at specific points so other components can be attached to the load-bearing monocoque structure. The structure is sealed in an airtight foil cover and placed in a high-pressure autoclave furnace, where the resins form a polymer and bond the honeycomb to the carbon fiber. Such carbon bonding creates a strong, stiff and precise structure that is also resistant to temperature extremes.
The Carrera GT is the first road car built around such a chassis and also the first with an engine and transmission support made entirely of CFP, a concept developed by Porsche’s motorsports department and registered for patent. The system was devised because of carbon-reinforced plastic’s structural strength and thermal resistance. CFP is also used in the Carrera GT’s removable roof, which consists of two lightweight panels. It is held in place by rapid-action catches and can be stored in the car’s front luggage compartment.
The Carrera GT has steel reinforcement in its windshield structure and the longitudinal arms commonly referred to as chassis legs are made from high-strength stainless steel and help create a crash structure at the front and rear of the vehicle. Aluminum inserts connect the longitudinal arms to the chassis at the front and to the engine/transmission support frame at the rear. The bumper system is made of a strong aluminum crossbar and impact tubes.
Porsche’s development engineers have placed the car’s fuel tank in an aluminum drawer within the monocoque and between the passenger cell and engine compartment. In addition to protecting the fuel tank, the chassis is designed to protect its human occupants. The Carrera GT is equipped with three-point safety belts with pretensioners and load limitors, but the seats also are prepared to accept six-point racing belts. Passive safety equipment includes front and side airbags for both the driver and passenger. Strong steel tubes built into the Carrera GT’s doors provide additional side-impact protection.
Transmission
The engine’s power reaches the rear wheels through a specially developed six-speed manual gearbox that has compact dimensions and a low center of gravity. The transversely mounted gearbox ensures optimum weight distribution without impairing the position of the rear diffuser.
Rather than carrying the weight of a two-mass flywheel, the transmission uses a special shaft design: the first main shaft is a hollow tube housing the long and thin solid shaft. This effectively creates a torsional spring that enables the shafts to dampen drive impacts and to reduce transmission noise.
The Carrera GT is the first Porsche to feature the Porsche Ceramic Composite Clutch (PCCC®), which is extremely compact and contributes to the car’s low center of gravity. The PCCC’s low mass also has a positive effect on engine dynamics. Ceramic composite clutches used in racing often have short lives, but Porsche has created a new clutch design and configuration with a two-plate dry clutch with ceramics made of carbon fiber and silicon carbide that are strong, light and have an exceptional service life. The plates are only 6.65 inches (169 mm) in diameter, less than half the size of typical production car clutch plates.
Suspension
The Porsche Carrera GT chassis and suspension is based on the architecture of the Porsche GT1, the car that won the 24 Hours of Le Mans race in 1998. For example, as on the GT1, the rear track control arms of the Carrera GT are made of aerodynamically designed steel tubes. However, Porsche engineers did not forget the need for driving comfort on the street when they adapted such racing-bred systems for the new supercar.
Like a racecar, the Carrera GT uses pushrod suspension with double-track control arms at all four corners to give the Carrera GT its refined response and behavior, feeding forces smoothly and efficiently into the car’s chassis. Where many cars use MacPherson spring struts, the Carrera GT’s spring and damper elements are operated by stainless steel pushrods and pivot levers, which separate the guidance function from the spring action. Advantages include more sensitive response and behavior as well as precise suspension tuning for both high and low speeds. Forged aluminum control arms resting on broad mounts feed wheel forces into the chassis. As on a racecar, the control arms are bolted on the chassis without rubber insulators, providing the most precise and direct wheel guidance at all times. The Carrera GT’s superior driving dynamics are further enhanced by a power steering system that has its safety steering column also bolted directly to the monocoque body structure.
Braking System
The Carrera GT is equipped with Porsche Ceramic Composite Brakes (PCCB®), which have been optimized and enlarged. The cross-drilled composite ceramic brake discs are 14.96 inches (380 mm) in diameter at all four corners of the car. Those discs are 1.34 inches (34 mm) thick, yet are 50 percent lighter than comparable cast iron discs. Porsche composite brakes provide immediate, frictionally consistent and optimized response while slowing the Carrera GT. Maximum brake power is built up within fractions of a second, yet abrasion is kept to an absolute minimum and the brakes have a substantial safety reserve even under extreme loads. Six-piston monoblock aluminum brake calipers front and rear are brand new and feature extremely large and firmly bolted connections to the wheel mounts, giving the driver good feel through the brake pedal. Short stopping distances are ensured by the hydraulic brake servo that builds pressure very quickly and efficiently.
The antilock braking system and traction control serve to ensure dynamic driving behavior even in transitional road surfaces and in inclement weather. The Carrera GT has four-channel anti-spin control (ASC) geared specifically for its ceramic brakes to provide short stopping distances with precise steering control. ASC is activated when required throughout the car’s entire range of acceleration, preventing excessive wheel spin on the drive wheels and thus avoiding any instability at the rear of the car. ASC can intervene in engine management to reduce power to the degree required. While they are spinning, the drive wheels are slowed by automatic brake differential (ABD) technology. However, the driver can switch off the traction control function by pressing a button on the center console.
Wheels
The Carrera GT rides on large, five-spoke wheels, which are the first production car application of forged magnesium rims made from a special manufacturing process that enhances strength while reducing weight. The forged magnesium wheels are some 25 percent lighter than cast aluminum wheels and thus reduce unsprung weight to a new level. The result is supreme traction as well as smooth and sure spring and damper action. The wheels are 19 inches in diameter and 9.5 inches wide for the front of the car and 20 inches in diameter and 12.5 inches wide at the rear. The wheels feature motorsports-style central wheel locks on their hubs.
Special tires were developed for the Carrera GT. They measure 265/35 X 19 in front and 335/30 X 20 in the rear. The tires are Z rated and have outstanding grip and consistent behavior at high speeds, yet have a relatively low level of wear for such high-performance tires. Despite its racing-oriented performance, the Porsche Carrera GT does not have a spartan interior. The cockpit is characterized by function-oriented ambience with extensive use of high-tech materials. Carbon, magnesium and leather dominate interior materials, with composite components either in their natural state or painted to match the magnesium pieces.
Interior and Amenities
The car’s center console is made of composite materials covered in galvanized magnesium. The shift lever is positioned about halfway up the console and is directly next to the steering wheel. The shift lever has a ball-shaped knob made of lightweight stratified birch/ash wood meant to remind drivers of the balsa wood shift knob in the 1970 Le Mans-winning Porsche 917. The Carrera GT features a new seat design and structure. The seats are finished in smooth leather and have manual adjustment because power motors would add unnecessary weight. The seats are made of a composite carbon shell. Each seat weighs only 23.6 pounds (10.7 kg.), compared to 28.9 pounds (13.1 kg.) for the seats in the Porsche GT3 or 44.1 pounds (20 kg.) for the seats in a Porsche 911 Carrera.
Air conditioning is optimized for weight and the car comes with a standard air filter system. Even though the Carrera GT is a serious performance car, it can be equipped with many comfort features, including a navigation system and Bose® audio. The Carrera GT also comes with its own five-piece set of leather luggage matched to the car’s interior color – Terracotta, Dark Grey Nature, Ascot Brown/Black Nature. Each piece of luggage is designed for a precise place within the car: the clothes bag fits behind the passenger’s seat, the attaché case fits in the passenger’s foot well, the shoulder bag fits between the passenger’s seat and door, a center console bag fits beneath the console and there are leather bags in special storage boxes within the doors and a travel bag in the luggage compartment. The luggage compartment is lined with a checkered fabric and can hold 2.68 cu.-ft. (76 liters) of cargo. Special leather straps hold the two roof panels in position when they are in the compartment.