Filed under: Technology. , Hyundai. testing Hyundai's Theta II DGI engine - Click above for high-res image gallery. When the swoopy new 2011 Sonata. goes into production at Hyundai's plant in Alabama early next year, it won't offer a V6 engine anymore, but it will get the company's first ever direct-injected engine. This week in South Korea, Hyundai took the wraps off its 2.4-liter Theta II GDI four-cylinder. Like similar engines from other automakers, Hyundai's engineers have taken advantage of the charge cooling effect of direct injection by boosting the compression ratio to 11.3:1. As a result the engine produces 198 hp and 184 pound-feet of torque at 4,250 rpm in Korean spec. The direct injection system is setup to use a two-pulse strategy similar to modern common rail diesels. The initial smaller pulse is ignited by the spark plug and then followed by a second larger pulse as the piston begins its downward stroke. GM uses a similar strategy for its 2.4-liter DI Ecotec because it
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