| Abstract: | A system and method for fast control of the timing of combustion in an
internal combustion engine, comprising actuating a fast-acting
fuel-additive supply valve to meter a variable amount of fuel additive
into a fuel stream, thereby forming an additive-enhanced fuel with an
additive concentration that can be dynamically adjusted as fast as each
engine cycle; injecting the additive-enhanced fuel directly or indirectly
into a combustion chamber or into an intake port; and combusting the
additive-enhanced fuel. |