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Old 08-29-2013, 03:25 AM
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Ferrer Ferrer is offline
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PEUGEOT style, naturally efficient

Fluidity is part of the Marque's stylistic heritage, it is in its DNA. On the 208 HYbrid FE, the aerodynamics experts took the exercise to an extreme. So, the Cd improves by 25%, to a value slightly lower than 0.25 and a real feat on a conventional vehicle where the passenger space and boot are maintained!

To achieve this, the air is parted by the 'floating grille' redesigned for permeability and reduced by 40% to just 5dmē. In fact, as the engine has been modified for efficiency, it duly requires less cooling.

On the body sides, any flow disrupting components has been eliminated to help improve the aero performance. The tyres, specially developed by Michelin, are of the Tall&Narrow type, ie: of large diameter and narrow width. They are fitted on 19" alloy wheels on which the carbon aerodynamic flaps fill the space between each spoke.

Cameras provide the rear vision, the image being reproduced on board on the interior mirror reminiscent of sporting disciplines like endurance racing. The rear track also contributes to this efficiency by being narrower by 40mm, further reducing the Cd. Finally, the design of the roof extends in an almost horizontal movement leading into the tailgate spoiler.

The rear aspect, with chamfered edges, has an air deflector in its lower section. It deflects the airflow which passes under the vehicle without hindrance due to the completely flat floor.

Finally, to reduce its environmental footprint as much as possible, the LED lamps of the 208 HYbrid FE have thin vertical fins, inspired by the Onyx Concept supercar. These features minimise the air flow turbulence.

A considerable reduction in weight: 20%

When it was launched, the PEUGEOT 208 hatchback shook up the segment, notably due to its light weight - from only 975kg at the Access level. This performance is remarkable, but in the future vehicles will need to be even lighter while still providing the high levels of comfort and safety.

"Reducing the weight was a primary area of consideration. To achieve the 20% reduction in the weight of the vehicle we carried out a study part by part and equipped the 208 HYbrid FE with the most innovative materials from Hutchinson, CCP Composites and Total's Polymers activity. This process is even more virtuous as it does not sacrifice any of the safety and comfort used in the vehicle while introducing real innovations."
Philippe Girard, Scientific Department Representative, Total Composite materials

The 208 HYbrid FE benefits from the latest material innovations developed by the Polymers Division of the Refining-Chemicals department at Total, as well as by its two subsidiaries CCP Composites and Hutchinson.

Taken from the end of the assembly line, the 208 retains its metal structure. Composite components replace bodywork panels and the floor, further reducing the weight of the body shell from 295 to 227kg. The one-piece outer skin (weighing just 20kg), the flat base (8kg), the door panels (c2kg) and the lower front panel are made from carbon fibre. The bonnet (5kg) and the wings (c2.1kg) are constructed from a composite VER/Carbon, a material which is half the weight but with comparable structural properties. It is obtained from a new type of resin which can be used untreated, painted or colour-dyed.

Finally, with the exception of the door windows, the glazing uses polycarbonate to further save 5kg.

The 208 HYbrid FE innovates in its use as this material has up until now be reserved for headlight lenses. It reduces the weight by more than 50% compared to conventional glass.

Innovative suspension and wheels

The 208 HYbrid FE rests on innovative pseudo MacPherson suspension with a 'glass fibre resin' composite transverse located blade. It replaces several components: suspension springs, lower wishbones and anti-roll bar. The front blade also has varying flexibility along its length. Designed and produced by Hutchinson, using these two blades saves 20kg.

Due to their dimensions, the 145/65 R19 wheels themselves reduce the rolling resistance by 20%. They also require less effort on the steering wheel to direct them, making steering assistance superfluous: saving in space under the bonnet, fuel consumption and extra weight. The wheels are fitted onto low friction bearings assisted by special Total grease.

The wheel rims house large brake discs 380mm in diameter and 9.6mm thick. They are rigged with two-piston callipers, 44.5mm at the front and 31.8mm at the rear.

On braking, the reduced effort on the pedal and the intervention of the electric motor mean that the supplementary braking assistance can be eliminated.

A passenger compartment for five occupants

The 208 HYbrid FE needed to retain the interior features of the production hatchback model. The result proves it: a very economical vehicle that can comfortably accommodate five people and their luggage. Only the air conditioning is eliminated due to its impact on fuel consumption.

The composite door trim pads are developed by Total's Polymers Division using Polypropylene reinforced with natural fibres. Its excellent structure, rigidity and impact absorption properties are accompanied by a reduction in weight of up to 15% and mean a reduction in the carbon footprint of these components. The centre console and vent trims are of VER resin (CCP Composites) left untreated to offer an appearance not previously seen before. In fact, their slightly amber honey colour reveals the natural fibres through transparency.

The weight reduction techniques have also been applied to the petrol engine and the gearbox.

An efficient and high-performance power train

The 208 HYbrid FE is driven by a petrol-electric hybrid powertrain, which combines development of the latest generation of 3-cylinder engine with a battery and an electric motor taken from PEUGEOT Sport's Endurance programme. Special engine management and special software control the entire drive train. Overall, the efficiency of the powertrain increases by an impressive 10%.

"The challenge of this project consisted of combining engine optimisations (reciprocating gears, cylinder head, etc.) and optimising the flow of energy between the internal combustion engine and the electric motor. All of the solutions can potentially be carried over to production." Julien Lidsky, Manager, 208 HYbrid FE Powertrain, PEUGEOT Sport
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