New Hyundai 2.4-liter GDI four-cylinder makes 200 hp in 2011 Sonata

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Filed under: Technology, Hyundai

Hyundai 2.4L Theta-II GDI - Click above for high res image gallery

When Hyundai's all new Sonata goes on sale early in 2010, it will arrive in U.S. showrooms with only one available engine, a thoroughly revamped version of the 2.4-liter Theta-II four cylinder. The new engine is Hyundai's first production powerplant with gasoline direct injection, but John Juriga, director of powertrains at the Hyundai-Kia Technical Center (HATCI), promised it wouldn't be the last. Juriga told a media briefing at HATCI recently that Hyundai was planning to roll out GDI across its lineup in the coming years.

For now though we have to be content with the new Sonata engine, which is now more powerful than the engine it replaces with 200 hp and 186 pound-feet of torque. The basic internal dimensions are carried over from the 2010 port-injected edition, with bore and stroke of 88 mm x 97 mm for a total displacement of 2,359 cc. The new fuel delivery system has allowed the engineering team to bump the compression ratio from 10.5:1 up to 11.3:1. Like other direct injected engines, the charge cooling effect of injecting the fuel in into the high temperature compressed aid allows the elevated compression without the risk of knock. Read on to learn more about the first GDI Hyundai engine.


Gallery: Hyundai 2.4L Theta-II GDI


[Source: Hyundai]Continue reading New Hyundai 2.4-liter GDI four-cylinder makes 200 hp in 2011 Sonata
New Hyundai 2.4-liter GDI four-cylinder makes 200 hp in 2011 Sonata originally appeared on Autoblog on Mon, 23 Nov 2009 13:01:00 EST. Please see our terms for use of feeds.


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