For the longest time, an engine's compression ratio has been a fixed value.

Caption by / Photo by Infiniti

That changes with the introduction of Infiniti's VC-Turbo engine.

Caption by / Photo by Infiniti

It uses a system of links within the engine block to change the engine's compression ratio on the fly.

Caption by / Photo by Infiniti

It's able to switch ratios between 8.0:1 and 14.0:1.

Caption by / Photo by Infiniti

Infiniti believes it can produce 27 percent better fuel efficiency than a similarly capable V6 engine.

Caption by / Photo by Infiniti

That's impressive, considering it's a four-cylinder engine.

Caption by / Photo by Infiniti

Infiniti is targeting a power output of 268 horsepower and 288 pound-feet of torque.

Caption by / Photo by Infiniti

The engine should reach production in 2018.

Caption by / Photo by Infiniti

Right now, the automaker won't say what vehicle the VC-Turbo will end up in.

Caption by / Photo by Infiniti

It might seem like witchcraft, but it's just science.

Caption by / Photo by Infiniti
Caption by / Photo by Infiniti
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