Under development for over 10 years, gasoline direct injection works much like a diesel engine with pressurized fuel injected straight into the cylinder, and, like diesel, tends to lower fuel consumption and increase output. It allows higher compression and lean operation (air/fuel ratio of 30:1-40:1 under low load) and may have 50 percent of the European gasoline market by 2010 as costs decrease. The BMW 760Li, MazdaSpeed6, and some 2005 Audi and VW FSI engines have it, and Isuzu offered it in 2004 Axioms and Rodeos, where it dropped NOx emissions by 87.5 percent, upped horsepower by 8.7, and improved economy by 8 percent.
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