The 2.4-liter Theta II GDI engine features gasoline direct injection (GDI) technology which aims to help Hyundai become a fuel economy leader. Compared to Hyundai's Theta I-4 engine family, the new Theta II 2.4L GDI features an unique block, valvetrain, front end accessory drive (FEAD), intake manifold, pistons, rods, crankshaft, variable induction system and catalyst.
The new engine is said to deliver an estimated 200 horsepower at 6,300 rpm and 186 lb.-ft. of torque at 4,250 rpm. This means that it will deliver more power than a traditional port-injected engine, while using less fuel, creating fewer emissions and delivering improved throttle response.
The GDI's split-injection strategy enables the catalyst to reach operating temperature faster. This helps reduce emissions by 30 percent during cold starts meeting California Air Resources Board's ULEV-2 and PZEV standards.
Moreover, GDI delivers 7 percent more torque at low engine rpm's and 12 percent more torque at the high-end for better take-off and overtaking performance. Best of all, GDI boosts gas mileage by up to 10 percent compared to a conventional engine.
Hyundai announced in late 2008 that it aims to meet Corporate Average Fuel Economy (CAFE) standards (that would have required a fleet average of 35 mpg by 2020), five years early through a combination of new technologies, including hybrids and gasoline direct injection.
However, the Obama administration has since proposed more aggressive standards of 35.5 mpg by 2016, which Hyundai supports and also plans to meet ahead of schedule.
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