Geneva Preview: Rinspeed iChange Concept

Article by Christian Andrei, on August 29, 2009

Rinspeed, the Swiss tuning and engineering company famous for its impressively strange creations such as the James Bond esque underwater sQuba and eXasis glass car, just to name a few, is currently dabbling into 'shape-shifting' or 'adaptive' cars like their iChange concept, that has the ability to adapt to the number of passengers on board, and which is set to be shown next month at the Geneva Motor Show.

The fundamental concept of the iChange is the fact that a vehicle demands energy contingent on weight, type of engine and aerodynamics.

Since weight and engines are fixed part of the equation, Rinspeed saw that a car's shape, and therefore its aerodynamic properties, can be transformed. This implies that Rinspeed has created a car that can change its shape to adapt to different conditions.

The Rinspeed model can change from a one-seater into a three-seater in a matter of seconds via a button that will pop up the rear end to increase cabin size in two phases.

The concept car does not have a door instead passengers will board it via the roof, measuring 1.03m in height, by tilting it forward. Absent from the car is a key which was substituted by an Apple iPhone which works in tandem with a Harman Kardon infotainment system that seeks to save energy through a lightweight design and the use of solar power.

For the fixed parts of the car, the iChange will come with a highly-efficient 200hp (150kW) electric motor and lightweight composite infused manufacturing process resulting in only 1,050kg in curb weight.

The car will be powered by a line of lithium-ion batteries which helps it sprint from 0-100km/h in a little over 4 seconds and attain a maximum speed of 220km/h.

Energy is sent to the 18-inch rear wheels through a 6-speed gearbox derived from a Subaru WRX. No imminent plans for producing the iChange yet but be sure that its features will be found in many production cars very soon.

Press Release

Rinspeed iChange Concept

The Swiss auto powerhouse Rinspeed presents the Rinspeed iChange Concept, the world's first car whose body adapts to the number of passengers on board. For Rinspeed boss Rinderknecht the vehicle is more than just a clever concept car. "The Rinspeed iChange Concept is a symbol for the fundamental changes the auto industry undergoes worldwide. And it is clear that only those companies will survive that have innovative answers for the demands of a new automotive era." The visionary Rinderknecht is convinced that the days of gas-guzzling behemoths are coming to an end: "The Rinspeed iChange Concept is a signal for the coming global changes to individual mobility. We need to be ready to meet these challenges with new ideas."

In seconds a streamlined one-seater sports car transforms into a comfortable car with ample room for three. The trick: At the push of a button the rear end of the teardrop-shaped car magically pops up. "We have designed and built an extremely flexible vehicle. In it we have brought the themes of versatility and continually changing energy demands to their logical conclusions." The result is a streamlined, lightweight zero-emission car with dramatically reduced energy consumption.

The basic idea behind the 'Rinspeed iChange Concept: The energy demand of a vehicle depends mostly on its weight, the type of engine it uses, and its aerodynamic properties. The engineering-services company Esoro that traditionally builds Rinspeed concept cars has built an extremely lightweight car weighing in at only 1050 kilograms. To power the car, the Swiss specialists chose an electric motor. The idea of the pop-up rear end was conceived to account for the sizeable effect aerodynamics play in fuel consumption.

While other cars always have to ferry around their puffed-up exteriors that can accommodate up to seven passengers even if they're just transporting a single soul, the Rinspeed iChange Concept features an adaptive body. The sole driver is conveyed in a teardrop-shaped car that offers optimal aerodynamic properties and thus minimized energy consumption. If more than one person need to be transported the expanding rear provides room for two passengers. As a result of the increased weight and no longer optimal aerodynamics the energy consumption increases - but only for the time passengers are actually on board.

The energy for the electric motor comes from lithium-ion batteries that are available in two different stack configurations for short- and long-distance driving. The electric motor of the Rinspeed iChange Concept produces 150kW, capable of propelling the car to a top speed of 220 km/h. The sprint from rest to 100 km/h takes just slightly over four seconds. This impressive performance is made possible with the help of a six-speed pre-selector gearbox from the Subaru WRX car. The central research department of Siemens AG (Corporate Technology, CT) supplied the integration technology for engine/generator, electronics and battery connection interface. Siemens has long been one of the world leaders for energy systems and eco technology with pioneering concepts for electric drive systems. Its products cover the entire electric value-added chain from generation to distribution to consumption. The gearbox and drivetrain are lubricated with eco-friendly lubricants from Motorex. Custom-made lightweight 17" and 18" forged wheels with aerodynamic shrouds are supplied by light-alloy wheel specialists AEZ. Pirelli P Zero tires in size 215/40-17 in front and size 245/40-18 in back provide optimal grip.

An initial walk-around reveals that the concept car has no doors. The entire electrically powered roof section of the car measuring just 1.03 meters in height tilts forward to allow passengers to board. Also gone are such mundane things as a key. Its role is filled by an Apple iPhone, which also controls the most important vehicle functions. The Rinspeed iChange Concept is drastically different than ordinary cars in every detail: At the heart of the concept car lies the groundbreaking next-generation Harman/Kardon infotainment system. The system uses an innovative Intel processor technology that guarantees minimized power consumption. The same is true for the Harman/Kardon high-efficiency audio system. This revolutionary technology meets highest demands on sound quality, weighs much less than ordinary systems and at the same time uses only a fraction of energy. This opens the door to a new dimension of energy efficiency. The route guidance of the navigation system is also especially eco-friendly: The system calculates the most energy-saving route and displays the directions in realistic 3D view. Eberspächer Group from Esslingen, Germany is one of the world leaders in car heaters. Specifically for the „iChange" project Eberspächer developed custom-tailored electric and fuel-burning heating systems. Both systems are geared toward the specific requirements and conditions of electric vehicles.

The pure wool used in the interior was further refined into high-tech wool by Schoeller using state-of-the-art processes. The wool is spun and died in accordance with the highest eco standards. It provides an extremely extravagant ambiance in the Rinspeed iChange Concept, looks stunning and is delicate to the touch. The competence partner Strähle + Hess transformed this natural product into a striking interior. Its surface character and materiality combine to create a symbiosis of shell, firmness and frothy air. Unconventional techniques create unusual surfaces. The seams of the seats are reversed and the removable seats cushions are adorned with the prototype's name. Xmobil provided further customization services. While textiles can be found in the Rinspeed iChange Concept in their original form in other areas, they are newly interpreted on seats and cargo floor using various refinement techniques such as braiding and gathering and a combination of both. Leather strips alternate with technical textiles. The seat cushions are interchangeable, braided felt alternates with technical textiles formed into three-dimensional shapes. This transfers the adaptive concept of the Rinspeed iChange Concept to the interior as well. The diamond-coated anti-slip floor is supplied by abrasives specialist KGS.

The Swiss Federal Ministry for Energy (Bundesamt für Energie) supports the „iChange" project as a groundbreaking research and development project. Solar panels on the top and sides of the roof provide electricity to the fan to keep temperatures in the Rinspeed iChange Concept comfortably low on hot summer days. The large Sharp solar panels also provide additional eco-friendly charging of the batteries.

With the Rinspeed iChange Concept Rinderknecht, a passionate C. F. Bucherer watch wearer, and his partners once more want to provide food for thought for the automotive industry. The Swiss car visionary: "If we want to maintain our individual mobility in the future we have to rethink the car in its entirety, without taboos. Most of all, we have to take its ecological aspects into consideration." And in the end everyone has to personally answer the same question: Am I ready and willing to change myself, do and can 'I change'?

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