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t The GDCI engine that Hyundai is working on along with Delphi Powertrain Systems Engineering. The objective is to gain diesel-like fuel efciency from a gasoline engine. engine was to create something that would be "more fun to drive." This was achieved, in part, by improving turbo response, from 1.6 seconds to 1.25 seconds. The twin-scroll turbocharger is integrated into the manifold. They've upped boost pressure by 10%. • Nu 2.0-liter GDI. This engine is being used in both the 2014 Hyundai Elantra and the Kia Soul. In the case of the Elantra, the engine is tuned for performance: 173 hp and 154 lb-ft of torque. In the case of the Soul, they've tuned it for fuel economy: that version of the engine produces 164 hp and 151 lb-ft of torque. Those are the same numbers for the 2013 Soul, but whereas that engine (with automatic transmission) is rated at 23 mpg city/28 mpg highway, the new Nu provides 23 mpg city and 31 mpg highway. The engine features a dual continuously variable valve (CVVT) system so there is timing of both intake and exhaust valves. There is q Here is where the injector is located in the GDCI. The injections occur multiple times, late in the compression cycle. high-pressure in-cylinder injection which improves combustion efciency, and thanks to split injection, there is an improvement in exhaust emissions. The crankshaft is ofset to reduce friction. There is a variable speed oil pump. • Lambda 3.8-liter GDI. Unlike the previous two, which are fours, this is a six-cylinder engine. What's interesting about this engine is that, Juriga says, that compared to the 3.8-liter in the current Hyundai Genesis, "we dropped the power." That is, the Genesis 3.8 produces 333 hp while the new one is 311 hp. "We didn't decrease it so much so that it is an issue, but we wanted to pick up the low end torque. Customers spend much of their time at lower RPMs, so we wanted to improve that." The Genesis 3.8 produces 292 lb-ft while the new one produces 293 lb-ft. (It is worth noting that Hyundai considers the competitive set for this engine to include the 3.5-liter MPI Accord engine, the 3.6-liter Pentastar in the 300S, and the 3.5-liter MPI engine in the Lexus ES 350 to be competitors. The Lambda 3.8 has better horsepower (311) and torque (293) numbers than all of them. Accord, 278/252; 300S, 305/269; ES 350, 268/248.) To achieve the better 37