Internal combustion engine with ammonia fuel

A method of providing fuel to an internal combustion engine, the method comprising:

• providing a source of ammonia wherein said ammonia is heated by exhaust gas from said internal combustion at a temperature of greater than or equal to 300° C. and a pressure of greater than or equal to 112 bar;
• dissociating a portion of said ammonia into hydrogen and nitrogen;
• and
• introducing said ammonia and said hydrogen to an internal combustion engine wherein said ammonia undergoes expansion and heat release wherein 95% or more of said heat released due to said expansion is retained by said ammonia.

A fuel system for an internal combustion engine, the fuel system comprising:

• a fuel tank to store liquid ammonia;
• a supply line to deliver said ammonia from said fuel tank to a reaction vessel wherein said vessel is capable of heating said ammonia to a temperature of greater than or equal to 300° C. at a pressure of greater than or equal to 112 bar along with dissociation of said ammonia into hydrogen and nitrogen;
• a first fuel supply line to provide the ammonia from the reaction vessel to said internal combustion engine;
• and
• a second fuel supply line to provide the hydrogen from the reaction vessel to said internal combustion engine.