Achieving The Maximum Fuel EconomyPotential Of Gasoline Engines Modular and Modular and flexible flexible architectures architectures Reduced Reduced mass mass Improved Improved combustion combustion technology technology Integration of Integration of leading-edge leading-edge technologies technologies Flex Fuel Flex Fuel
Gasoline Engines –Achieving the Maximum Fuel Economy Cam Phasing, Variable ValvePotential Lift, Active Fuel Management Port Deactivation with EGR• Modular And Flexible Architectures• Reduced Mass• Improved Combustion Technology• Integration Of Leading Edge Technologies Spark Ignition Downsized SIDI HCCI – Homogenous Charge Direct Injection Turbo Boosting Compression Ignition
GM’s Global Ethanol Initiatives GM is the world leader in providing customer choice through biofuel and FlexFuel availability – more than 4.0 million ethanol-capable vehicles on the road In U.S., GM has 3.0 million FlexFuel E85-capable vehicles on the road and has committed to have 50% of annual volume E85 capable by 2012 In Brazil, 100% of our fleet is available with FlexPower and accounts for 95% of sales
Advancing Emission TechnologyDevelopment – Diesel Engines Improved Base Engine Advanced Advanced common rail common rail injection injection Lower Lower compression compression ratio ratio Higher peak Higher peak cylinder cylinder pressure pressure
Diesel Engines – Achieving the Lowest Emissions Base Engine Advanced Boosting with Cylinder Technologies Small Displacement Pressure Sensing • High Pressure HP Injection ECU Turbo Cylinder • Lower EGR Turbo Pressure Compression Ratios Sensor • Higher Peak LP Fuel Cylinder Pressure Turbo Injectors PCCI Combustion Diesel Particulate Filter NOX Aftertreatment X 6Equivalence Ratio (f) 5 Oxidation Catalyst 4 soot zone Porous Cell 3 Conventional Conventional Wall 2 Combustion Combustion PCCI PCCI Combustion 1 Combustion Particulate NOX Zone Filter 0 Urea SCR Urea 500 1000 1500 2000 2500 3000 NOx Catalyst Injection Temperature (K)
Summary For GM, energy alternatives and advanced technologies that help reduce dependency on petroleum, improve fuel economy and reduce emissions are the keys to developing sustainable transportation.