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Koenigsegg CCX

The Koenigsegg CCX is a mid-engine sports car manufactured by Swedish automotive manufacturer Koenigsegg Automotive AB. The project began with the aim of making a global car, designed and engineered to comply with global safety and environment regulations, particularly to enter the United States car market. To sell cars in the US many alterations were made to the design of the CCR; the previously used Ford Modular engine was replaced by an in-house developed Koenigsegg engine designed to run on 91 octane fuel, readily available in the United States, and to meet the Californian emission standards.

The name CCX is an abbreviation for Competition Coupé X, the X commemorating the 10th anniversary (X being the Roman numeral for ten) of the completion and test drive of the first CC prototype in 1996.

The CCX was unveiled at the 2006 Geneva Motor Show, sporting body modifications to meet US vehicle regulations and a new in-house developed 4.7L twin supercharged V8 engine capable of generating a maximum power output of 817 PS (601 kW; 806 hp) at 7,000 rpm and 920 N⋅m (679 lb⋅ft) of torque at 5,500 rpm while running on 91 octane gasoline.


The engine of a Koenigsegg CCX at the 2006 Geneva Motor Show
The new engine is of all aluminium construction, made out of 356 aluminium with a T7 heat treatment to further enhance block integrity and cylinder bore chill during casting. Specifically created and cast for Koenigsegg by Grainger & Worrall, a casting specialist with F1 experience in drivetrain components, the engine was built, assembled and tested at their Ängelholm production plant. The engine is lubricated with a dry sump system with a separate oil pump and the pistons are cooled by means of an internal cooler that sprays oil onto them in order to run high cylinder pressure with 91 octane fuel making it capable of 14 mpg‑US (17 L/100 km; 17 mpg‑imp) in combined cycle and 18 mpg‑US (13 L/100 km; 22 mpg‑imp) in highway travel.Available transmissions are a CIMA 6-speed manual and a 6-speed sequential manual transmission. Power is fed to the wheels through a torque-sensitive limited slip differential.


Rear view of the CCX
The chassis is made from carbon fibre reinforced with kevlar and aluminium honeycomb like the previous models. While the body keeps the targa top body style and the dihedral synchro-helix actuation doors, it is completely reworked. There is a new front bumper design, enhanced brake cooling, fog lamps, US patented head lamps, a new fresh air intake on the bonnet that acts as ram air booster, air intakes behind the front wheels to enhance airflow and a glass window over the engine.

The standard magnesium-alloy rear wheel of a CCX
The CCX has frontal area of 2,894 sq in (1.867 m2) and a drag coefficient of Cd=0.30., with a CdA of 0.56 m2 (6.0 sq ft). It also has a flat underside with venturi tunnels at the rear and an optional rear spoiler to improve downforce. At 200 km/h (124 mph) there is 60 kg (130 lb) of downforce over the front axle and 65 kg (143 lb) over the rear. The car is 88 mm (3.5 in) longer to comply with the US rear impact regulations and to free space around the rear muffler. On the interior, there is 51 mm (2.0 in) of extra headroom as well as specifically designed Sparco carbon fibre seats.

Wheels and brakes
First in the industry carbon fibre wheels are optional equipment, 3 kilograms (6.6 lb) lighter than the standard forged alloy telephone-dial wheels, both using centre locking nuts. Diameter is 19 inches at the front and 20 inches at the rear equipped with 255/35 Y19 front, 335/30 Y20 rear Michelin Pilot Sport 2 tyres, 8 piston caliper carbon ceramic brakes measuring 380 mm (15 in) in diameter at the front and 6 piston caliper 362 mm (14.3 in) at the rear are optional, saving another 2 kg (4.4 lb) of unsprung weight.

source : wikipedia.org

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