Audi sports prototypes: ultra-lightweight pattern in perfection

Posted on 23. May, 2013 by in Audi Canada

Since 1999, ultra-lightweight pattern has been personification a executive purpose with Audi’s Le Mans prototypes (LMP). Materials, such as CFRP (carbon fiber reinforced plastic), bay vital intensity for optimizing weight.

“In a space of 15 years, we’ve also achieved vital swell in a area of ultra-lightweight design,” stresses Head of Audi Motorsport Dr. Wolfgang Ullrich. “Audi’s LMP sports cars have ceaselessly turn lighter, stiffer, safer in crashes and some-more efficient. There is frequency another motorsport fortify in that a creativity of a engineers is rewarded as rarely as it is with a Le Mans prototypes. Whether in terms of engineering pattern sum or materials: many of a ultra-lightweight ideas from motorsport have a intensity of definitely conversion a growth of Audi’s prolongation models. Reducing a weight of a cars is a pivotal to a successful destiny – in motorsport and in production.”

Even in a initial LMP sports automobile – a 1999 R8R – Audi used a CO fiber monocoque. Audi has significantly been shortening weight to this day:

-As a executive framework component, a monocoque supports a front axle, a front and parallel physique tools and, given 2012, a hybrid system. The engine is directly connected to a rear. The monocoque so transmits a torsional and tortuous army that are introduced by a circle suspensions, and absorbs a impact energies that are generated in accidents – in frontal or side crashes as good as in roll-overs.

-The Audi R8R (1999), a R8 (2000-2005), a R10 TDI (2006-2008) and a R15 TDI (2009-2010) all had open monocoques. For a R18 TDI (2011), Audi used a sealed dungeon for a initial time. Its one-piece pattern is a trend-setter for reserve and weight. Up to then, a sealed monocoques of competitors, for prolongation reasons, had been done adult of several elements.

-Although a sealed cockpit requires a use of some-more element Audi has managed to cut a weight of a monocoque in half between 1999 and today, while leading all a reserve and pile-up mandate of a FIA. Furthermore, Audi managed to again boost a torsional strength of a monocoque during this duration of time notwithstanding a 50-percent rebate in weight. The comparison with a prolongation automobile reveals engaging facts: with allied torsional values, a weight of a CO dungeon of a R18 usually amounts to about a fourth of a weight of a body-in-white done of steel sheet.

-The torsional and tortuous rigidity of a cockpit can usually be totally effective if a entirely stressed assemblies of a engine and delivery yield a analogous stiffness. The V6 TDI engine with a 120-degree cylinder bank angle is formed on an innovative pattern of a crankcase: Underneath a categorical bearing, a crankcase is of a ladder support design. The parallel suction pier of a dry sump and a finning bond a temperament blocks with any other. In multiple with a top crankcase deck, this creates a unbending unit. The engine and a monocoque have scarcely a same stiffness. This framework pattern is complemented by a delivery housing. Since 2012, it has been done of a lightweight and fast full-carbon construction in that a ascent points for a back spindle are integrated. In addition, really light backstays from a monocoque to a delivery housing optimize a rigidity of a back end.

-A sequential comparison illustrates a stress of a swell that has been done in ultra-lightweight design: The weight of a diesel engine, due to a design, exceeds that of a allied gasoline engine in a two-digit commission range. At a same time, a Audi R18 e-tron quattro, given 2012, has been easy a hybrid complement including a engine during a front axle. Still, a simple weight of a competition automobile is next a smallest of 915 kilograms. Ballast weight is used to urge a set-up. The 1999 R8R, with a gasoline engine and but a hybrid system, weighed roughly accurately 900 kilograms and frequency offering any embodiment for ballast.

-Numerous smaller solutions have been concomitant a vital steps. The CO fiber gas pedal in a Audi R10 TDI already saved a few hundred grams of weight compared with an aluminum version. The lithium-ion battery that was used for a initial time in a 2009 R15 TDI even valid to be 7 kilograms lighter than a lead storage battery.

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