Hiroshima, Japan – Mazda has released information on its next-generation powertrain technologies, called SKYACTIV, which includes new engines, transmissions, bodies and platforms that will be launched starting in 2011. The technologies will make major reductions in fuel consumption and CO2 emissions possible in all Mazda models, the company said.

The process will initially concentrate on lightweight construction as a core value of the brand, along with the optimization of conventional powertrain technologies. In further phases, efficiency-improving technologies such as regenerative braking and hybrid systems will be introduced. Mazda’s goal is to lower the fuel consumption of its global fleet by 30 per cent by 2015, when compared with 2008.

Mazda said that, as an example, its SKYACTIV-G gasoline engine will achieve fuel consumption levels without the use of electric components that have until now been reserved for hybrid powertrains. The high-efficiency direct-injection gasoline engine uses a compression ratio of 14.0:1, the highest ever achieved by any production gasoline engine. It allows the engine to use 15 per cent less fuel but with a 15 per cent increase in torque.

The company will also introduce a new SKYACTIV-D diesel engine, also at 14.0:1, the lowest ever for a diesel engine, resulting in a 20 per cent drop in fuel consumption. The engine would also have clean combustion that would not require expensive after-treatments to reduce NOx.

New transmissions include a SKYACTIV-Drive automatic, which combines the advantages of a conventional automatic, a CVT and a double-clutch transmission, delivering up to seven per cent better fuel economy, and a SKYACTIV-MT compact and lightweight manual transmission with reduced internal friction.

Lightweight construction will include a new SKYACTIV-Body body structure and SKYACTIV-Chassis. The new chassis is eight per cent lighter and 30 per cent more rigid than a conventional chassis, achieved mostly by the increased use of high-tensile steel and optimized bonding materials. The chassis comes with a newly-developed suspension that is 14 per cent lighter than the current suspension, delivering precise handling and ride comfort.

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