Process for operating controlled ignition engines with lean combustible mixtures

Claim 1

A PROCESS FOR FEEDING WITH A CARBURETTED MIXTURE A CONTROLLED IGNITION ENGINE OF THE TYPE COMPRISING AT LEAST ONE CYLINDER PROVIDED WITH A SUBSTANTIALLY HOMOGENEOUS COMBUSTION CHAMBER, A SPARK PLUG, INLET AND OUTLET PORT MEANS, COMPRISING THE STEPS OF PROVIDING TWO SEPARATE GASEOUS STREAMS OF DIFFERENT RICHNESS, SIMULTANEOUSLY INTRODUCING SAID GASEOUS STREAMS IN THE FORM OF A CARBURETTED HETEROGENEOUS MIXTURE INTO SAID CYLINDER, AND DIRECTING THE RICHER ONE OF SAID GASEOUS STREAMS SUBSTANTIALLY IN THE DIRECTION OF SAID SPARK PLUG, AND CONTINUOUSLY CONTROLLING THE RESPECTIVE PROPORTIONS OF SAID SEPARATE GASEOUS STREAMS SO AS TO DETERMINE BOTH THE AVERAGE RICHNESS OF THE INTRODUCED MIXTURE AND ITS DEGREE OF HETEROGENEITY, THEREBY PROVIDING THE POSSIBILITY OF OPERATING THE ENGINE AT WILL EITHER WITH A LEAN MIXTURE OR, IF DESIRED, WITH A MIXTURE OF AN AVERAGE HIGH RICHNESS, AS REQUIRED FOR OBTAINING THE MAXIMIUM POWER OF THE ENGINE.