Patent ID: 11959434
Assignee: CLEARFLAME ENGINES, INC.
Field: Engines, pumps, turbines (Mechanical engineering)
Classification: CPC F  Y | IPC F

Claim 31:
32. The method of claim 29, wherein the fuel is a first fuel, the volume of air is a first volume of air, and the engine crank angle is a first engine crank angle, the method further comprising:
opening the intake valve to draw a second volume of air into the combustion chamber;
closing the intake valve; and
moving the piston from BDC to TDC;
injecting a volume of a second fuel into the combustion chamber at a second engine crank angle during a second time period, the second fuel having a different cetane number, heating value, and/or chemical composition from the first fuel; and
combusting substantially all of the volume of the second fuel,
wherein the second engine crank angle is greater than about 330 degrees by a sufficient margin such that no more than about 50% of the volume of the second fuel is pre-mixed with the second volume of air upon initiation of combustion.