[杂谈] 现代GDCI双增压引擎明年装备新索纳塔

So, how's it work? Basically, Hyundai is combining the best attributes of diesel engines with gasoline fuel, and using both supercharging and turbocharging technology to aid with performance. For starters, the GDCI(Gasoline Direct-Injection Compression) engine in development uses a supercharger for "low exhaust gas temperatures" and then a turbocharger for "high-speed power." Combined with an extremely high compression ratio – 14.8:1 – as well as a fully variable valvetrain, Hyundai expects a 1.8-liter GDCI engine to be more efficient than a comparable 2.0-liter diesel engine with similar performance.

With a current redline of only 4,500 rpm, it also appears like it will behave like a diesel, if not sound like one, though Hyundai tells us it "can soften the noise with injection timing."