What is SKYACTIV® TECHNOLOGY?
You’ve seen the SKYACTIV® TECHNOLOGY badge on the back of many Mazda models, but what is SKYACTIV® TECHNOLOGY? Let us tell you all about it. SKYACTIV® TECHNOLOGY is actually a broad umbrella term that applies to many technologies employed throughout a modern Mazda vehicle.
How is SKYACTIV® TECHNOLOGY used?
In general, the aim of SKYACTIV® TECHNOLOGY is to increase fuel-efficiency and engine performance without compromising the drive, look, or feel of the car. Mazda engineers achieve this goal through numerous modifications to various parts of a Mazda including the engine, transmission, frame, and more.
Often you may see SKYACTIV® TECHNOLOGY with a letter like SKYACTIV®-G or SKYACTIV®-D. These indicate a specific segment of SKYACTIV® TECHNOLOGY. In the two previously mentioned cases, it stands for gasoline engine and diesel engine respectively.
Example of SKYACTIV®-G technology
To walk you through every bit of SKYACTIV® TECHNOLOGY would be difficult. In truth, SKYACTIV® TECHNOLOGY now extends to nearly every part of a modern Mazda, but to give you an idea how deeply Mazda is thinking about engine technology, let’s take a look at the exhaust system of a Mazda gasoline engine with SKYACTIV® TECHNOLOGY.
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Most exhaust manifolds have down tubes that are of nearly equal length going to a collector and then onto the rest of the exhaust. However, Mazda discovered that these down tubes on modern automobiles aren’t long enough. The exhaust creates a pressure wave that goes from the exhausting cylinder toward another cylinder that’s about to exhaust. This makes it harder for cylinders to exhaust thereby decreasing fuel efficiency.
By lengthening certain downtube respective to the engine’s firing order, Mazda was able to eliminate this pressure wave issue. The pressure wave simply no longer has enough time to travel up the longer downtube before dissipating.
What is SKYACTIV®-X?
SKYACTIV®-X is a new engine technology that you will likely be hearing a lot about in the coming years. Basically, it’s a gasoline engine that uses technology similar to a diesel engine to achieve huge gains in terms of both efficiency and power. This type of engine uses SPCCI or Spark Controlled Compression Ignition.
Instead of using pure compression to ignite the fuel-air mixture like a diesel, it uses a spark plug to create a small pressure wave. This wave pushes the mixture’s pressure over the edge to force ignition of the entire mixture instantaneously. A traditional gasoline engine would have a more gradual and less powerful burn.