Method and apparatus for minimizing combustible gas contents of engine exhaust gases

Claim 1

THE METHOD OF REDUCING THE COMBUSTIBLE CONTENT OF EXHAUST GASES FROM AN INTERNAL COMBUSTION ENGINE CYLINDER WHICH COMPRISES DIRECTING AN AIR STREAM AT HE EXHAUST GASES LEAVING SAID CYLINDER BEFORE APPRECIABLE EXPANSION OF THE EXHAUST GASES OCCURS, THE AMOUNT OF AIR BEING SUFFICIENT TO PROVIDE FOR COMBUSTION OF THE COMBUSTIBLES IN THE EXHAUST GASES LEAVING THE CYLINDER IMMEDIATELY AT THE TIME OF EXHAUST BUT BEING INSUFFICIENT TO COOL THE EXHAUST GASES BELOW THE AUTOIGNITION TEMPERATURE OF THE EXHAUST GASES, AND CONTINUING THE SUPPLY OF AIR TO SAID EXHAUST GASES AT DECREASING RATES CORRESPONDING TO THE DECREASE IN RATE OF EXHAUST GASES LEAVING THE CYLINDER AS VENTING OF SAID CYLINDER PROCEEDS, WHEREBY THE RESULTANT MIXTURE OF AIR AND EXHAUST GASES PROVIDES SUBSTANTIALLY OPTIMUM CONDTIONS FOR AUTOIGNITION OF THE COMBUSTIBLES CONTAINED IN SAID EXHAUST GASES.