| abstract |
A biodiesel or diesel composition for use in internal-combustion engines has an alcohol component, a water component, and a cetane-enhancer component. An anhydrous emulsifier component may be either a glyceryl monooleate or ammonium oleate, and is present in an amount effective for the fuel, alcohol, water, and emulsifier components to form an emulsion. The fuel, alcohol, water, and emulsifier components are present in amounts effective to reduce emissions of nitrogen oxides by a threshold amount upon combustion of the fuel composition, relative to fuel alone. |