The development of automotive mechanisms for engines has a history going back more than 120 years and has involved the work of countless engineers. For this reason we tend to find it difficult to think that any further improvement in performance is possible. But the fact remains that 70 to 80 percent of the energy contained in fuel is lost within a vehicle’s powertrain and fails to be transferred as motive power to its wheels.
Many of today’s automakers are working on engine refinement by making engines smaller and various other methods. One of Mazda’s recent developments towards an ideal engine configuration is the Homogenous Charge Compression Ignition (HCCI) engine, which offers the combined advantages of both gasoline and diesel engines. In commercializing the rotary engine and through other remarkable technical achievements, Mazda has a history of making the seemingly impossible possible. Now, we have taken on the challenge of pursuing ideal combustion.
- SKYACTIV-G
A next generation highly-efficient direct-injection gasoline engine that achieves the world’s highest gasoline engine compression ratio of 14.0:1
- The world’s first gasoline engine for mass production vehicles to achieve a high compression ratio of 14.0:1
- Significantly improved engine efficiency thanks to the high compression combustion, resulting in 15 percent increases in fuel efficiency and torque
- Improved everyday driving thanks to increased torque at low- to mid-engine speeds
- A 4-2-1 exhaust system, cavity pistons, multihole injectors and other innovations enable the high compression ratio
- SKYACTIV-D
A next-generation clean diesel engine that will meet global emissions regulations without expensive NOx aftertreatments thanks to the world’s lowest diesel engine compression ratio of 14.0:1
- 20 percent better fuel efficiency thanks to the low compression ratio of 14.0:1
- A new two-stage turbocharger realizes smooth and linear response from low to high engine speeds, and greatly increases low- and high-end torque (up to the 5,200 rpm rev limit)
- Complies with global emissions regulations (Euro6 in Europe, Tier2Bin5 in North America, and the Post New Long-Term Regulations in Japan), without expensive NOx aftertreatment
Vehicle transmissions are not only extremely important for improving fuel economy, they also exert a major influence on driving performance. The performance demands on automatic transmissions vary greatly depending on the market, and since there is not a single transmission in existence that satisfies all these varied demands, automakers deploy a variety of systems, each matched to a particular market.
Employing the world’s most commonly-used combination – a torque converter and stepped automatic transmission – as the basic structure, and by using technology that substantially reduces slip in starting devices, Mazda has brought together the benefits of each system in developing a highly efficient automatic transmission with a substantially direct drive feel.
- SKYACTIV-Drive
A next-generation highly efficient automatic transmission that achieves excellent torque transfer efficiency through a wider lock-up range and features the best attributes of all transmission types
- Combines all the advantages of conventional automatic transmissions, continuously variable transmissions, and dual clutch transmissions
- A dramatically widened lock-up range improves torque transfer efficiency and realizes a direct driving feel that is equivalent to a manual transmission
- A 4-to-7 percent improvement in fuel economy compared to the current transmission