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Mercedes-Benz Bionic

Field	Value
image	Bioniccar 11.jpg
name	Mercedes-Benz Bionic
manufacturer	Mercedes-Benz
production	Concept car (2005)
engine	1.9-liter four-cylinder direct-injection turbodiesel. 138 hp
wheelbase	101 in
length	167 in
width	71.5 in
height	62.8 in
weight	2425 lb
transmission	Autotronic CVT transmission

Comparison to a streamlined half-body with Cd of 0.12

The Mercedes-Benz Bionic is a concept car created by DaimlerChrysler AG under the Mercedes Group. It was first introduced in 2005 at the DaimlerChrysler Innovation Symposium in Washington, D.C. The Bionic is modeled after the yellow boxfish, Ostracion cubicus, and has 80% lower nitrogen oxide emissions with its selective catalytic reduction technology.

Engine and performance

The Bionic is powered by a 103 kW direct-injection diesel engine with an average fuel economy of 54.7 MPG (US) (~4.3 L/100 km). This engine also outputs around 140 hp and a little over 221 ft·lbf of torque at around 1,600 rpm. The Bionic can go from 0 to 60 mph in about eight seconds and has a top speed of a little over 190 km/h.

Design

The exterior design was modeled after the yellow boxfish (Ostracion cubicus), a marine fish that lives in coral reefs. Mercedes-Benz decided to model the Bionic after this fish due to the supposed low coefficient of drag of its body shape and the rigidity of its exoskeleton; this influenced the car's unusual looks. It was believed that the shape of the boxfish would improve aerodynamics and stability. However, in 2015, a paper in Journal of the Royal Society Interface claimed that "The drag-reduction performance of the two boxfish species studied was relatively low compared with more generalized body shapes of fish". Other parts of the design include the fact that the rear wheels are partially fitted with plastic and that it is considered as a lightweight vehicle. Mercedes-Benz reported a drag coefficient of 0.19; for comparison, the production vehicle with the lowest ever Cd value was the GM EV1, at 0.195. While the Bionic had a much larger internal volume than the EV1, the Bionic's larger frontal area made the EV1 more aerodynamic overall, as drag is a product of the area and the drag coefficient.

The vehicle was capable of seating four people.

References

(15 June 2005). ""Bionic" Car Fueled by Fishy Ideas". National Geographic.
Padeanu, Adrian. (2 January 2019). "2005 Mercedes Bionic: Concept We Forgot". Motor1.com.
(2015). "Bio-Inspired Design: Aerodynamics of Boxfish". Procedia Engineering.
(July 2009). "The Energy-Efficient Boxfish". Watchtower Bible and Tract Society of New York.
Jake, Buehler. (11 March 2015). "A Real Drag. Mercedes-Benz modeled a car on the boxfish. Only it completely misunderstood the boxfish.". Slate.
(6 February 2015). "Boxfish swimming paradox resolved: forces by the flow of water around the body promote manoeuvrability". Journal of the Royal Society Interface.
[http://www.cnn.com/2007/TECH/03/08/cars.fish.popsci/index.html Mercedes' fish-inspired car] CNN (retrieved 2008-08-12)

Info: Wikipedia Source

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