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The Koenigsegg CCX is a mid-engined roadster from Swedish car manufacturer Koenigsegg. The CCX has been engineered to comply with the US regulation and market demands and is an evolutionary design that replaced the Koenigsegg CCR.
CCX is an abbreviation for Competition Coupe X; the X commemorating the 10th anniversary, (being the Roman numeral for ten), of the completion and test drive of the first CC vehicle in 1996.
The CCX was first unveiled on February 28, 2006 at the 2006 Geneva Motor Show although its existence was announced earlier. The CCX is also available as the CCXR, the difference being that CCXR's engine is tuned to run on biofuel. The different fuel and tune allows the CCXR to produce 25% more power than the CCX.
The Koenigsegg CCXR is an "environmentally-friendly" version CCX powered by essentially the same twin-supercharged V8 engine but converted to use E85 ethanol fuel. The engine tune in the CCXR is more powerful than that of the CCX, putting out 1018 bhp (760 kW) at 7200 rpm and 781.8 ft�lb (1060 N�m) of torque at 6100 rpm, 25% more power than the CCX, also making it the second most powerful production car in the world, behind the SSC Ultimate Aero TT.Christian von Koenigsegg said that "Our engineers couldn't quite believe the figures when we tested the car". The increased power is a result of the cooling properties of ethanol in the engine's combustion chambers allowing for a higher pressure in the cylinder and the biofuel having a higher octane rating of 113 RON compared to 95 RON for gasoline in North America and 100 RON for gasoline in Europe, although the CCXR burns slightly more fuel than the CCX with 15 mpg (17L/100km). The only changes to the engine are modified fuel injectors, upgraded fuel lines and piston rings and a higher boost setting on the superchargers. Koenigsegg stated that CCX owners will be able to have their cars converted to the same engine specification as the CCXR for approximately US$100,000 (�80,000) extra, although the CCX remains available for purchase as biofuel for the CCXR may not be available in some locations.
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Specifications :
Manufacturer Koenigsegg
Production 2006�present
Predecessor Koenigsegg CCR
Class Sports car
Body style(s) 2-door roadster
Layout Rear mid-engine, rear-wheel drive
Engine(s) 4.7 L twin-supercharged V8
Transmission(s) 6-speed manual
Wheelbase 2660 mm (104.7 in)
Length 4293 mm (169 in)
Width 1996 mm (78.6 in)
Height 1120 mm (44.1 in)
Curb weight 1180 kg (2601 lb)
Designer Sven-Harry �kesson
Performance :
The CCX can accelerate from stationary to 100 km/h (62 mph) in 3.2 seconds and 100 miles per hour (160 km/h) in 7.7 seconds.It can complete a standing quarter mile in 9.9 seconds with an end speed of 146 miles per hour (235 km/h). According to Koenigsegg it has a top speed of 395 km/h (245 mph), but it has not officially been tested on a long enough straight to confirm its maximum speed. The CCX has a turning circle of 36 ft 1.1 in (11 meters) and can turn at 1.3 lateral gs (13 m/s�).
Engine :
While the previous Koenigseggs were powered by a Ford Modular V8 engine sourced from the U.S., the engine of the CCX was designed by Koenigsegg based on the Ford Modular architecture, and assembled for them by Grainger & Worrall, a British company that produces drivetrain components for Formula One cars.The engine is a 4.7 litre (4712 cc, 287 cu in) V8, with dual overhead camshafts and 4 valves per cylinder. The engine block is made of 356 Aluminium that has undergone a T7 heat treatment, a form of accelerated precipitation strengthening.The aluminium alloy is stronger than the previous engine and allows a thinner, thus lighter, engine block that will withstand higher cylinder pressures. The engine is boosted by two centrifugal superchargers that increase the compression to 17.5 psi (120 kPa) with an 8.2:1 compression ratio. The engine produces 806 hp (601 kW) at 6900 rpm and 678 lb�ft (919 N�m) of torque at 5700 rpm on 91 octane (U.S. rating) gasoline. The engine is lubricated with a dry sump system with a separate oil pump, the pistons are cooled by oil sprayed onto them and the oil itself has an external cooler.The CCX engine burns 14 mpg�U.S. / 17 mpg�imp (17 Liters per 100 kilometers)
Transmission :
The CCX has a six speed manual gearbox made for Koenigsegg by Cima with a twin plate clutch of diameter 8.46 in (215 millimeters) as default but a sequential manual transmission option is available. The power is fed to the wheels through a torque sensitive, limited slip differential. The option to select gear ratios is available, but the default ratios of the 2007 CCX are in the table.