Preinduction means and method for treating a fuel air mixture for reduction of nitrous oxides

Claim 1

A PREINDUCTION DEVICE FOR IMPROVING THE PERFORMANCE OF AN INTERNAL COMBUSTION ENGINE HAVING A CARBURETOR, AN INTAKE MANIFOLD, AND AN EXHAUST MANIFOLD, COMPRISING: MEANS DEFINING AN INTAKE PASSAGEWAY FOR RECEIVING A FUEL-AIR MIXTURE FROM THE CARBURETOR; MEANS DEFINING AN OUTER ANNULAR CHAMBER IN COMMUNICATION WITH SAID PASSAGEWAY; MEANS PROVIDING AN INTERMEDIATE ANNULAR CHAMBER CONCENTRIC WITH SAID OUTER ANNULAR CHAMBER; MEANS FOR DIRECTING FLOW OF SAID MIXTURE FROM SAID OUTER CHAMBER TO SAID INTERMEDIATE CHAMBER AT THE TOP OF THE LATTER CHAMBER AND FOR IMPARTING INITIAL ROTARY MOTION TO SAID MIXTURE; MEANS FOR INTRODUCING EXHAUST GASES TO THE TOP OF THE INTERMEDIATE CHAMBER AND FOR IMPARTING ROTARY MOTION TO SAID EXHAUST GASES FOR COMMINGLING OF SAID EXHAUST GASES WITH SAID FUEL-AIR MIXTURE TO PROVIDE A COMPOSITE MIXTURE; MEANS PROVIDING AN INNER CHAMBER; MEANS PROVIDED ADJACENT THE BOTTOM OF SAID INTERMEDIATE CHAMBER AND SAID INNER CHAMBER FOR FURTHER DIRECTING FLOW OF SAID EXHAUST GAS AND FUEL-AIR MIXTURE IN A ROTARY DIRECTION AND FOR SEPARATING NONVOLATILIZED FUEL DROPLETS FROM SAID FUEL-AIR MIXTURE AND FOR FURTHER INTIMATELY MIXING SAID EXHAUST GASES AND SAID FUEL-AIR MIXTURE; AND MEANS PROVIDING AN OUTLET PASSAGEWAY IN COMMUNICATION WITH THE UPPER PORTION OF THE INNER CHAMBER, SAID OUTLET PASSAGEWAY BEING IN COMMUNICATION WITH THE INTAKE MANIFOLD.