SKYACTIV



SKYACTIV is a blanket term for Mazda's innovative next-generation technologies that are being developed under the company's long-term vision for technology development, Sustainable Zoom-Zoom. The SKYACTIV name is intended to reflect Mazda's desire to provide driving pleasure as well as outstanding environmental and safety performance in its vehicles. To achieve this goal, Mazda has implemented an internal Building Block Strategy to be completed by 2015. This ambitious strategy involves the comprehensive optimization of Mazda's base technologies, which determine the core performance of its vehicles, and the progressive introduction of electric devices such as regenerative braking and a hybrid system. All the technologies that are developed based on the Building Block Strategy will fall under the SKYACTIV umbrella.

The Mazda SKY concept
The precursors of SKYACTIV, which featured Mazda SKY-G 2.0-litre direct injection gasoline engine, Mazda SKY-D 2.2-litre diesel engine, SKY-Drive automatic transmission, Mazda Kiyora with SKY-G 1.3 engine and SKY-Drive automatic transmission, were unveiled in 41st Tokyo Motor Show.

SKYACTIV-G
SKYACTIV-G is a family of direct injection gasoline engines. The engine compression ratio is increased to 14:1. To reduce the chance of engine knock at high compression, residual gas is reduced by using a 4-2-1 exhaust system, implementing a piston cavity, and optimizing fuel injection. In addition, combustion duration is shortened by intensifying air flow, increasing injection pressure, using multi-hole injectors, and having a piston cavity.

SKYACTIV-D
SKYACTIV-D is a family of turbocharged Diesel engines, designed to comply with global emissions regulations.

To eliminate the need of NOx and particulate treatment in contemporary Diesel engines, the cylinder compression ratio is reduced to 14.0:1. Cold engine start is achieved via multi-hole piezo injectors with 3 programmable injection patterns, adoption of ceramic glow plugs. Engine misfiring is prevented via variable valve lift at exhaust, which opens exhaust valves during the intake stroke, which increases engine air temperature. SKYACTIV-D also uses a two-stage turbocharger in which one small and one large turbo are selectively operated according to driving conditions.

SKYACTIV-Drive
SKYACTIV-Drive is a family of automatic transmission, formerly named SKY-Drive.

SKYACTIV-MT
SKYACTIV-MTis a family of manual transmission.

To achieve lighter shift effort with a short shift lever stroke, the lever ratio is increased. However, to overcome the shorter internal stroke, a small module spline is used. Shift throws are reduced by 15 percent making it the shortest shifting of any passenger car.

To allow weight reduction, the triple-shafted gear train is made with reverse and 1st gears on the same shaft, and the use of shorter secondary shaft.

SKYACTIV-Body
SKYACTIV-Body refers to a next-generation lightweight, highly-rigid body with improved crash safety performance and high rigidity.



SKYACTIV-Chassis
SKYACTIV-Chassis refers to a next-generation lightweight chassis that balances precise handling with a comfortable ride feel to realize driving pleasure.