Fuel additive, additive-containing fuel compositions and method of manufacture

A fuel additive concentrate composition comprising:

• about 80-20% by weight of an additive constituent comprising:
• about 3-35% by weight of a nitrogen-containing compound selected from the group consisting of urea, cyanuric acid, triazine, and ammonia;
• about 30-97% by weight of a carrier blend comprising:
• about 30-75% by weight of an alkoxylated alcohol composition having the following general structure:
• wherein
• R1 is C6-C16,
• R2 is H or CH3,
• And x is 1-7;
• about 10-60% by weight of a polyalkylene glycol ester composition having the following general structure:
• wherein
• R3 is C11-C19,
• R4 is H or CH3,
• Y is 1-20,
• R5 is H or COR3;
• and
• about 10-60% by weight of an alkanolamide composition having the following general structure:
• wherein R6 is C12-C18,
• R7 is H or CH2CH2OH;
• and
• about 0.0025-25% by weight of water;
• and
• about 20-80% by weight of a solvent,
• wherein the fuel additive composition is substantially homogeneous.

A fuel composition formulated to produce reduced NOx emissions when subject to combustion in an internal combustion engine comprising:

• about 97-99% by weight of a hydrocarbon-containing fuel;
• and
• about 0.01-3% by weight of a fuel additive concentrate comprising:
• about 80-20% by weight of an additive constituent comprising:
• about 3-35% by weight of a nitrogen-containing compound selected from the group consisting of urea, cyanuric acid, triazine, and ammonia;
• about 30-97% by weight of a carrier blend comprising:
• about 30-75% by weight of an alkoxylated alcohol composition having the following general structure:
• wherein
• R1 is C6-C16,
• R2 is H or CH3, and
• X is 1-7;
• about 10-60% by weight of a polyalkylene glycol ester composition having the following general structure:
• wherein
• R3 is C11-C19,
• R4 is H or CH3,
• y is 1-20
• R5 is H or COR3;
• and
• about 10-60% by weight of an alkanolamide composition having the following general structure:
• wherein
• R6 is C12-C18;
• R7 is H or CH2CH2OH;
• and
• about 0.0025-25% by weight of water
• wherein the fuel additive composition is substantially homogeneous.