Homogeneous charge compression ignition (HCCI-type) combustion system for an engine and powertrain using wet-alcohol as a fuel and including hot assist ignition

An internal combustion-type engine capable of burning a wet-alcohol fuel having both a water component and an alcohol component, comprising:

• a piston reciprocating within a cylinder attached to a cylinder head and connecting a crank shaft via a crank arm;
• an intake cam and valve mounted within an intake port formed in the cylinder head and an exhaust cam and valve mounted within an exhaust port also formed in the cylinder head;
• the fuel being pressurized and heated prior to being injected into the cylinder by a fuel injector separate from the introduction of air and prior to combustion;
• a pair of spark plugs mounted within said cylinder head and located in offset angular directions relative to a combustion chamber within the cylinder for triggering ignition of the fuel;
• and
• a percentage of the water component in the fuel operating to prolong a cylinder pressure prior to ignition of the fuel in order to increase a mean effective pressure, leading to a higher torque of the engine via a longer pressure pulse attained during a period of a mechanical advantage of the crank arm.