Process for reducing abnormal combustion within an internal combustion engine

A process reducing abnormal combustion within a combustion chamber of an engine, the process comprising:

• providing a piston-driven internal combustion engine having a cylinder, a piston with at least one piston ring and a head using a computer, the cylinder, piston and head forming a combustion chamber;
• providing the computer with memory and a processing unit, the computer operable to perform simulations and calculations;
• simulating at least one of the cylinder, the piston with at least one piston ring and the head of the piston-driven internal combustion engine using the computer;
• simulating oil droplets passing past the at least one piston ring and entering into the combustion chamber using the computer;
• simulating the location of the oil droplets within the combustion chamber after entering into the combustion chamber using the computer;
• determining hot spots in the combustion chamber from the oil droplets simulation and from the location of the oil droplets simulation using the computer;
• simulating combustion of fuel and air within the combustion chamber including simulation of fuel properties using the computer;
• calculating a probability of pre-ignition for at least a portion of the hot spots in the combustion chamber as a function of the simulated combustion and determined hot spots within the combustion chamber using the computer;
• and
• altering a combustion chamber parameter of the piston-driven internal combustion engine as a function of the determined probability of pre-ignition, the changing of combustion chamber parameter reducing pre-ignition for the piston-driven internal combustion engine.