skyactiv engines

Mazda has officially unveiled the name for its new generation of improved efficiency technologies – SkyActiv. The new moniker encompasses the previously-named SKY series of engines and transmissions, as well as bodyshells and platforms that will be launched in 2011 with the promise of making major reductions in fuel consumption and CO2 emissions.

The programme will initially concentrate on lightweight construction as a core value of the brand, along with the optimisation of conventional powertrain technologies. As it goes along, efficiency improving technologies, such as regenerative brake systems and hybrid power systems, will be successively introduced. The goal of the company is to lower the fuel consumption of its global fleet by 30% by 2015.

skyactiv transmissions

In terms of powertrains, the SkyActiv-G petrol engine is expected to make its debut in the Mazda2 in Japan early next year, and the promise is that it will achieve fuel consumption levels comparable to that of hybrid powertrains.

The high-efficiency direct-injection petrol engine, with a 14.0:1 compression ratio (the highest in the world for a production engine, the company says), will bring a 15% improvement in both engine torque and fuel economy, so the company says. The same compression ratio is to be found in the SkyActiv-D turbodiesel, with a 20% improvement in fuel consumption and Euro 6 emission standards coming from the two-phase turbocharger-equipped pot.

skyactiv bodyshell

Other SkyActiv gear includes a new SkyActiv-MT manual box and a SkyActiv-Drive automatic transmission, which is the former SKY-Drive. The latter features a significantly widened lock-up range, which increases the efficiency of the torque converter, improves torque transfer efficiency and offers a direct driving feel comparable to a manual transmission. Best of all, it also delivers an improvement in fuel economy of up to 7% compared to a current, conventional torque-converter automatic transmission.

Elsewhere, the programme also includes a body structure called SkyActiv-Body and a vehicle platform named SkyActiv-Chassis. The newly-developed, high-strength bodyshell is 8% lighter and 30% stiffer with the use of high-tensile steels and optimised bonding materials. As for the SkyActiv-Chassis, it comes with a newly-developed suspension that’s 14% lighter than the current suspension system used by Mazda.