A low or no pollution engine is provided for delivering power for vehicles or other power applications. The engine has an air inlet which collects air from a surrounding environment. At least a portion of the nitrogen in the air is removed using a technique such as liquefaction, pressure swing adsorption...http://www.google.com/patents/US6389814?utm_source=gb-gplus-sharePatent US6389814 - Hydrocarbon combustion power generation system with CO2 sequestration
