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The Citroen C-SportLounge:
A New Type Of GT

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OPTICAL AND HEARING


2005 Citroen C-SportLounge Concept Car
2005 Citroen C-SportLounge Concept Car



14th September, 2005


Citroen has revealed the C-SportLounge at the 2005 Frankfurt International Motor Show, a new concept for a Grand Tourer that combines the GT traditions of performance and style with the latest technology and aerodynamic efficiency.

The advanced aerodynamics include a wing under the rear of the car that reduces drag and, when required provides extra braking force, while an invisible wing sits on the top of the tail of the C-SportLounge, which uses micro electro-mechanical systems (MEMS) to provide a virtual airfoil by propelling jets of air and substantially improving the vehicle's drag and stability at high speeds.

But the Citroen C-SportLounge is more than technology and aerodynamics. The noble styling of the C-SportLounge's bodywork is pleasing to the eye from the first glance. Pure, assertive lines perfectly reflect CitroŽn's style codes. The original architecture successfully combines a powerful, sleekly muscled appearance with remarkable aerodynamics.

Powerful, flowing lines
The concept car has a sleek silhouette with flowing lines, but also gives a sense of power with ultra-smooth flanks, rounded at the top and yellow body paint, which emphasises the vehicle's sleek looks.

The determined look of the front end is enhanced by the wide air intakes and clear-cut headlamps. The headlamps have swivelling beams, providing optimum lighting in bends. The large chrome chevrons on the smooth bonnet express Citroen's signature. The large windscreen placed well to the front rises high and melds into the sunroof in a single unbroken line, offering a broad glass surface, enhancing visibility and letting in maximum light.

The profile of the C-SportLounge reflects optimal aerodynamic design. The receding roof arch and attention to detail underscore the vehicle's class and elegance. The flowing lines are highlighted by two chrome horizontal bars: one following the waist line and the other running along the bonnet up the top of the front quarter-light. The C-SportLounge also expresses strength and power through generous volumes, stressed by well-defined wheel arches and 20-inch aluminium wheels.

The powerful design of the front and rear ends gives the vehicle a determined, powerful appearance. The concept car has boomerang-shaped LED headlamps and two chrome exhaust pipes.

Optimised aerodynamic design
Special attention has been paid to the aerodynamic, flowing lines - strong CitroŽn values. The drag coefficient is 0.26 and rear lift 0.02. In addition to styling and volume that enhance air penetration, various technological features contribute to that result:
Air ducts on both sides of the front bumper. They produce an air flow through the front wheel arches, creating a virtual fairing.
An electro-mechanical system at the rear of the roof. It consists of micro electro-mechanical systems (MEMs), which create a virtual airfoil by propelling jets of air and substantially improve the vehicle's drag and stability at high speeds.
A reverse mobile wing, under the structure at the rear of the vehicle. This cylinder-activated reverse airfoil improves lift and enhances vehicle stability at high speeds. It has three positions:
- A "neutral" position, integrated with the rear styling, when the vehicle is stationary or in the city,
- A position adopted at a cruising speed of above 90 kph that optimises the drag coefficient and lift,
- A position activated during emergency braking to increase negative lift by adding support and stabilising the vehicle.
The smooth subframe improves both drag and positive lift by optimising air flow under the vehicle.

This capacity to penetrate the air enhances the C SportLounge's efficient, dynamic handling, performance and environmental-friendliness.

Dynamic performance and environmental-friendliness
This concept car could be fitted with 140 bhp to 200 bhp petrol or diesel HDi engines equipped with a particulate filter. The engines can be matted with auto-adaptive six-speed gearboxes. As well as the automatic comfort mode, the driver can opt for manual gear change, using paddles behind the wheel.

Thanks to its low drag coefficient, the C SportLounge combines high performance with low fuel consumption and emissions.

AN INVITATION TO TRAVEL

The interior design confirms the vehicle's dynamic and powerful style. The interior of the C-SportLounge, designed to seat four adults comfortably, expresses the grand touring spirit of the concept. The on-board feel is a harmonious blend of noble, sturdy, extensively worked materials and high-tech styling for the driving position, inspired by aviation design.

A cockpit feel
The design of the driving position was dictated by driving pleasure. The driver sits in an authentic cockpit between the central tunnel and the generously curved inner door. This impression is accentuated by the styling and location of the instrument panel: driver-dedicated navigation screens, start button on the roof, and aluminium knobs for the two-zone climate control system on the tunnel. The dials are covered in translucent yellow materials. There are four easy-to-identify display areas:
Left-hand side of the steering wheel: oil and water gauges and speedometer with two arcs and two needles;
Right-hand side of the steering wheel: rev counter and climate control data;
Centre of the steering wheel: display of the automatic gearbox mode selected;
Front doors: two on-board touch screens, within reach of the driver and front passenger, display information on the telephone, audio and navigation systems and pocket-PC functions. The passenger can also access multimedia functions such as the DVD player and games.

The semi-raised driving position offers the driver proper eye height for comfort and safety, as well as a "sports type" seating position for more driving pleasure. The driver's seat and the central console are all of one piece, which keeps the automatic gearbox and climate-control system controls within reach, regardless of the horizontal seat adjustment setting.

The driver's position has been designed to let the driver concentrate on the road, with a fixed-centred controls steering wheel and gear-changing paddles.

Travel in comfort
With rear-hinged doors at the rear, the C-SportLounge offers unexpectedly generous access for a vehicle of this type. The doors open together with the central pillar to an angle of 87į.

Four independent seats, padded and upholstered in bronze-coloured leather, with integrated seat belts, envelop the driver and passengers, who travel in comfort, in an interior modelled on a fighter plane. The leather-upholstered door panels and floor add to the opulence of the interior. The pure lines of the dashboard continue onto the door panels in a receding line that duplicates the overstitching on the seats.

A central tunnel divides the space into individual areas. The pure glass sunroof, divided into four parts, highlights these individualised areas. Like the broad windscreen and long side windows, the sunroof maximises light and enhances the sensation of being open to the sky. Contributing to the refinement of the interior ambience, LED lighting concealed in the armrests diffuses filtered light.

The roomy luggage compartment makes long-distance travel easy.

The original architecture and dynamic, prestigious appearance of the C-SportLounge clearly states its grand touring ambition.

Technical characteristics

Dimensions
Length: 4.51 m
Width: 1.87 m
Height: 1.52 m
Wheelbase: 2.72 m

Aerodynamics
Drag coefficient: 0.26
Forward lift: 0.01
Rear lift: 0.02

Engines*:
140 bhp to 200 bhp petrol or HDi diesel engine with a particulate filter

Gearbox:
six-speed gearbox with gear-changing paddles on steering wheel and mode selection lever for the automatic gearbox on the central tunnel

Tyres:
Michelin 255-40 R20, asymmetrical tread design

Electric parking brake

Directional headlamps

The concept car presented is fitted with an HDi 138 DPFS engine coupled with an automatic six-speed gearbox







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