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Aimed at achieving "2015 model average fuel economy in 2008 reduced by 30% on the basis of" Grand goal, up to horses since a year ago we published the latest SKY series engine. But until recently, Mazda finally announced the official developed the SKY series. First launch of the new 2.0 l gasoline engine and will be applied to the Mazda launched the new models.

For Mazda's new generation of dynamic systems, SKY two major series entitled KY-G direct injection gasoline engine and a clean-diesel engine SKY-D. 2.0 l gasoline engine compression ratio from 10: 1 to amazing 14: 1, through the direct injection system with precise control over oil and gas mixture proportions, not only ensuring 163 horsepower and 210 cow ・ m power output indicators, and fuel economy increases 15%. As horse Mazda 3 models, urban and high-speed terrains of 100 kilometers fuel consumption respectively only 7.8 l and 5.9 litres, the equivalent of cash Mazda2 level.

Nevertheless increase the compression ratio will allow cylinders creates a significant amount of heat energy, leading to early igniting, also is to say of knock. In order to better disseminate the calories, engineers significantly lengthened 4-2-1 structure of the exhaust manifold, reduces burning gas was once again the chance of inhaled air cylinder. In addition, low friction piston, connecting rod and crankshaft with further reduces engine through the exhaust side of electronically controlled variable timing control institutions also contribute to improving the cold starting performance. On this basis, the series gasoline engine in the future will KY-G derive 1.3 l-2.5 l displacement of more than one version.

In fuel economy, will be put into operation in 2012 SKY-D series 2.2 l clean-diesel engine, fuel prominent original improve by 20% , and mass most advanced diesel engine, and can meet the remaining Euro 6 standards. It also adopted a similar low internal friction technologies and optimizes combustion chamber shape and fuel injection and engine efficiency, but the opposite is the practice, the agent will be compacted ratio from 16.3: 1 to 14: 1, almost reaching today's diesel engine compression ratio limit. This has brought the three benefits: lower working temperature can significantly reduce harmful nitrogen oxide compounds produce; engine instant acceleration to improve significantly; piston and connecting rod pressure gets smaller, you can not do it like before, the overall weight of the engine is reduced by 25 kg.