Patent ID: 8206470

Claim:
A method for reducing NOx emissions from a vehicle, said vehicle powered at least in part by an air-consuming combustion engine, said method comprising: transferring a fluid mixture from a fuel dispensing facility through a fill port to a vehicle storage vessel, said fluid mixture comprising a hydrocarbon component, an ammonia-like NOx reductant component and a NOx reductant carrier component, said ammonia-like NOx reductant component comprising nitrogen and hydrogen elements with no more than a minor amount of carbon; storing said fluid mixture on-board said vehicle in said vehicle storage vessel prior to operation of said vehicle; withdrawing at least a portion of said fluid mixture from said vehicle storage vessel; separating said portion of said fluid mixture into at least a first portion and a second portion wherein said first portion has a concentration of said ammonia-like NOx reductant component different from the concentration of said ammonia-like NOx reductant component of said second constituent portion; mixing at least some of said first portion with engine intake air to form a combustible mixture; combusting said combustible mixture in said air-consuming combustion engine resulting in an exhaust gas mixture being generated; and mixing at least some of said second portion with said exhaust gas mixture.