Abstract: Operation of a DI HCCI engine is optimized for maximizing load capability and load ranges via matching fuel ignitability with the compression ratio of the engine.

Abstract: A service station is provided with a plurality of vehicle servicing islands including liquid fuel blending pumps for dispensing and blending fuel components from underground tanks for refueling standard gasoline engine driven vehicles, standard diesel engine vehicles, vehicles with engines requiring dual fuels, vehicles with HCCI engines requiring low octane gasoline blended with standard diesel fuel, and fuel cell powered vehicles having onboard reformers. Other service islands include pumps for dispensing compressed hydrogen to fuel cell powered vehicles that do not include onboard reformers. In addition, service islands are provided for recharging the batteries of pure electric powered vehicles.

Abstract: A method is disclosed for controlling exhaust emissions from direct injected homogeneous charge compression ignition engines by combusting therein a fuel having a cetane number equal to or less than 50, and aromatic content equal to or greater than 15 wt %.