LE5 Ecotec 2.4L I4 VVT Engine Power Curve

LE5 Ecotec 2.4L I4 VVT Engine Power Curve

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How Direct Injection Works

Saturn's 2009 Outlook, Sky Red Line, and upcoming Vue 2-Mode hybrid models all feature powerplants using "direct injection" (DI) technology to improve power, efficiency, and emissions. In a conventionally port fuel injected engine, air and fuel are mixed before they enter the combustion chamber. With General Motors' DI engines, fuel is sprayed directly into the cylinder where it is mixed with air.