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Mazda to Premiere Eco-Friendly and Powerful Next Generation SKY Concept Engines at 2009 Tokyo Motor Show

Mazda Global Premiere of Eco-Friendly and Powerful Next Generation ‘SKY-G’ and ‘SKY-D’ Engines at Tokyo Motor Show 2009

HIROSHIMA, Japan—Mazda Motor Corporation will showcase the world premiere of its next-generation engine lineup and automatic transmissions at the 41st Tokyo Motor Show, to be held from Saturday, October 24 through Wednesday, November 4, 2009. Mazda will exhibit the ‘Mazda SKY-G’ direct injection gasoline engine, the ‘Mazda SKY-D’ clean diesel engine and the ‘Mazda SKY Drive’ high-efficiency automatic transmission.

Mazda’s theme for the 2009 Tokyo Motor Show is “The Mazda SKY concept—Providing driving pleasure and environmental and safety features for all customers!” Under the headings of “Today,” “Tomorrow” and “The Future,” Mazda will display advanced technologies designed to improve the average fuel economy of Mazda vehicles sold globally 30 percent by 2015 compared to 2008 levels. This is one of the goals of Mazda’s long-term vision for technology development, Sustainable Zoom-Zoom.

Mazda is committed to significantly improving the core aspects of its vehicles that affect performance – engines, transmissions, and lighter vehicle weight – in order to achieve elevated driving pleasure together with outstanding environmental and safety features. The Mazda SKY concept defines Mazda’s approach to developing next-generation powertrains that will significantly improve the eco-friendliness and dynamic performance of all Mazda vehicles. The SKY concept embodies Mazda’s desire to ensure an “everlasting blue sky” under which drivers will always be able to enjoy the fun-to-drive pleasure afforded by owning a Mazda. The concept also reflects the “sky’s the limit” aspirations of Mazda’s engineers as they employ unconventional thinking to achieve optimal performance in every vehicle that bears the Mazda nameplate.

Based on the SKY concept, Mazda’s “Technologies for Tomorrow” display at this year’s Tokyo Motor Show will include the next-generation direct injection gasoline Mazda SKY-G engine and the Mazda SKY-D clean diesel engine. Both offer improved eco-friendliness and torque thanks to optimized combustion efficiency. Mazda will also reveal the first next-generation automatic transmission, the Mazda SKY-Drive, which offers first-rate fuel economy and a direct driving performance feel.

Next-generation direct injection gasoline engine ‘Mazda SKY-G’

Next-generation direct injection Mazda SKY-G gasoline engine
Mazda SKY-G is a next-generation direct injection gasoline engine with significantly improved fuel economy and output performance due to enhanced thermal efficiency. The engine block is newly designed to reduce mechanical friction and achieve an optimal air-fuel mix, and a direct fuel injection system is employed due to the wide variety of spray profiles that are possible, enabling the maximum expansion ratio to be achieved. Specifically, fuel economy and torque are improved by approximately 15 percent compared to Mazda’s current 2.0-liter engine. This was achieved by adopting next-generation fuel injectors and a highly functional variable valve timing mechanism. The engine enables fuel economy equivalent to the current Mazda Demio (known as the Mazda2 overseas) to be achieved in a vehicle the size of a Mazda Axela (Mazda3).

Next-generation clean diesel engine ‘Mazda SKY-D’

Next-generation clean diesel Mazda SKY-D engine
Mazda’s new SKY-D clean diesel engine boasts high fuel economy and output performance as well as low exhaust emissions. The newly designed engine block reduces mechanical friction to the level of a gasoline engine. By optimizing the pressure and temperature in the cylinders, the shape of combustion chambers, and the fuel injection rate, combustion begins at the best timing in terms of thermal efficiency. Specifically, by employing piezo injectors, a two-stage turbocharger and other technologies, fuel economy becomes approximately 20 percent better than the current 2.2-liter diesel engine. Mazda has achieved fuel economy equivalent to the current Mazda Demio (known overseas as the Mazda2) in a vehicle the size of a Mazda Atenza (Mazda6).

‘Mazda SKY Drive’ high-efficiency automatic transmission

Next-generation Mazda SKY-Drive automatic transmission
Mazda’s next-generation SKY-Drive automatic transmission is highly efficient, contributing to substantially improved fuel economy and a more direct feel compared with the current unit. It improves fuel economy by approximately five percent, due to a complete redesign that significantly reduces mechanical friction, a revised torque converter and clutch with minimized slip, and an optimized lock-up mechanism. A rapid clutch action was achieved by identifying the minimum amount of fluid necessary. This also helped to realize a direct feel similar to a dual clutch transmission.

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