Mazda unveils the Kiyora at the 41st Tokyo Motor Show
The Japanese automaker Mazda presented the Kiyora concept at the 41st Tokyo Motor Show. The Mazda Kiyora gives an indication as to where Mazda is going with their small, eco-friendly city car for the future. The Kiyora is highly fuel efficient, with a very small CO2 footprint, delivering Zoom- Zoom driving fun and high levels of safety. This compact concept car is powered by the Mazda SKY-G engine and SKY-Drive transmission, achieving 75.25 MPG. The Mazda SKY-G is a next-generation direct injection gasoline engine with greatly improved fuel economy and output due to enhanced thermal efficiency. The Kiyora chieves this by taking Mazda’s acclaimed lightweight strategy to a new level by employing an extremely rigid and lightweight carbon-fibre body structure beneath a small, aerodynamic outer skin and a spirited, small-displacement 1.3-liter direct injection engine.
Press release after the jump.
The Mazda Kiyora concept suggests one direction Mazda is pursuing in car development, and demonstrates a 30% improvement in fuel economy in line with our “Sustainable Zoom-Zoom” plan. A feasible compact city commuter car of the near future, Kiyora achieves next generation environmental performance coupled with Mazda’s inimitable driving fun. Mazda Kiyora is powered by a next-generation “Mazda SKY-G 1.3L” gasoline engine mated to a next-generation “Mazda SKY-Drive” transmission. The vehicle is also equipped with Mazda’s proprietary i-stop idling stop system and regenerative braking system. Mazda Kiyora achieves ultra-high fuel economy of 32km/L in Japan’s 10-15 mode test cycle assessment, without drive assistance by an electric motor.
Next-generation standards of driving pleasure and eco-friendliness
Mazda Kiyora is a next-generation compact concept born from research into the future of the global environment and the lifestyles of young city dwellers. Mazda Motor Europe’s Advanced Product Strategy (APS) team conducted an in-depth analysis of the small city car segment in Europe. Results showed that young people wanted cars that are fun to drive, easy to park and use, cost little to run and produce low exhaust emissions.
“Mazda Kiyora” is our response to these demands from global markets, using next generation technologies based on Mazda’s “Sustainable Zoom-Zoom” plan.
Mazda Kiyora’s powertrain mates a newly developed “Mazda SKY-G 1.3” direct injection gasoline engine with “Mazda SKY-Drive” — a newly developed, compact and lightweight six-speed AT with manual mode. The results are exceptional environmental performance as well as a powerful and refined drive with excellent response even from low speeds. The car is also equipped with Mazda’s proprietary “i-stop” advanced idling stop system which eliminates wasted fuel consumption when the vehicle is momentarily stationary.
To efficiently harness energy regenerated during deceleration, we installed a regenerative braking system that converts kinetic energy to electricity as the vehicle decelerates and uses it to recharge the battery. The system greatly reduces the load on the engine required to drive the alternator to generate electricity, and this translates into commensurately lower fuel consumption. The exhaust gas purification system employs a newly developed catalyst — produced using single-nanotechnology, which controls particles even smaller than those of conventional nanotechnology — resulting in the highest ranking emissions purification performance in the class.
In addition, thorough weight reduction gives a weight 100kg below that of Mazda Demio. This, together with a superbly crafted aerodynamic body, helps to enable Mazda Kiyora’s ultra-low fuel consumption of 32km/L (Japan’s 10-15 mode test cycle) without drive assistance by an electric motor.
With regard to weight reduction, CAE was employed to design an ideal body structure which includes lightweight materials such as aluminum and a special resin foam, currently under development at Mazda. These are found not only in interior parts such as the instrument panel, but are also used for the hood, tailgate and sections of the chassis. Their effective usage contributes to an improved yaw moment of inertia and reduced unsprung weight, leading to superb handling.
Exterior — Fusing form and function
With an overall length 10cm shorter than the Mazda Demio, Mazda Kiyora represents a further evolution of the company’s design DNA, combining a signature five-point grille with 3-dimensional elements over the entire body. Its silhouette features character lines that are sleek and smooth, moving upwards and rearwards to fuse into the rear spoiler. Combined with 18-inch alloy wheels and extremely short overhangs, the result is a truly sporty look in a small package. The transparent roof is equipped with solar panels which provide electricity for the car’s interior systems.
The compact body and low overall height keep the area of the front cross-section to a minimum. In addition, detailed aerodynamic studies of the body surface shape, use of devices to control underfloor airflow and a rear roof spoiler combine to create exceptional aerodynamics.
Interior design — All-round weight reduction and integrated development
The interior design is not only an expression of beauty and functionality, it also achieves minimized weight while moulding shapes to produce a rigid structure for the cabin. To achieve this, the designers thoroughly analysed the body structure and conducted comprehensive weight-saving development before considering high-cost replacement materials. As well as drastically reducing weight, this also results in high rigidity and excellent impact resistance. Integrating the rear seats with the body frame structure was born from this approach.
Color and materials
The exterior is blue-green with transparent plastic doors chosen to express the purity of water. Inside are forms that give the impression of flowing sea grass — for example, the wavy side member of the body shell. The overall color scheme gives the impression of looking into water when viewed through the doors from outside the car.
The interior seen through the skeletal body shell reflects the water theme with wavy, flowing forms. The instrument panel and door trim have a soft coating and use light metal to enhance this impression.