Cylinder head with exhaust eductor

Claim 1

IN AN INTERNAL COMBUSTION ENGINE HAVING A CYLINDER BLOCK AND A CYLINDER HEAD FOR SAID BLOCK, SAID CYLINDER HEAD HAVING EXHAUST GAS PORTS AND VALVES IN REGISTER WITH AND TO OPEN AND CLOSE SAID PORTS, AN EDUCTOR THROUGH A WALL OF SAID CYLINDER HEAD DOWNSTREAM OF AND IN COMMUNICATION WITH AN EXHAUST GAS PORT AND OFFSET FROM THE VALVE FOR SAID PORT, SAID EDUCTOR CONDUCTING EXHAUST GASES DISCHARGED FROM ONE OR MORE CYLINDERS OF SAID ENGINE TO AN EXHAUST GAS DISCHARGE AREA HAVING A VOLUMETRIC CAPACITY WITHIN THE PERIMETER OF SAID CYLINDER HEAD SUBSTANTIALLY GREATER THAN THE VOLUMETRIC CAPACITY OF SAID EDUCTOR,, SAID EDUCTOR HAVING AN INLET PORTION AND AN OUTLET PORTION IN COMMUNICATION WITH EACH OTHER, SAID INLET PORTION COMPRISING AN INLET END, AN OUTLET END AND A COMMUNICATING PASSAGE THEREBETWEEN, THE CROSS-SECTIONAL AREA OF SAID INLET END BEING GREATER THAN THE CROSS-SECTIONAL AREA OF SAID OUTLET END OF SAID INLET PORTION, SAID OUTLET PORTION HAVING AN INLET END, AN OUTLET END AND A COMMUNICATING PASSAGE THEREBETWEEN, THE CROSS-SECTIONAL AREA OF SAID INLET END OF SAID OUTLET PORTION BEING GREATER THAN THE CROSSSECTIONAL AREA OF SAID OUTLET END OF SAID INLET PORTION, SAID OUTLET END OF SAID INLET PORTION LYING FULLY WITHIN SAID OUTLET PORTION, AND A FLUID PASSAGEWAY IN COMMUNICATION WITH SAID INLET PORTION AND SAID OUTLET PORTION DISPOSED INTERMEDIATE THE INLET AND OUTLET ENDS OF SAID INLET PORTION AND CLOSELY ADJACENT BUT REARWARDLY OF THE OUTLET END OF SAID INLET PORTION, AND A CONDUIT CONDUCTING OXYGEN-CONTAINING FLUID TO SID EDUCTOR PASSAGEWAY, WHEREBY SAID OXYGEN-CONTAINING FLUID DRAWN INTO SAID OUTLET PORTION OF SAID EDUCTOR ADJACENT THE OUTLET END OF SAID INLET PORTION INTERMIXES WITH SAID EXHAUST GASES AS THEY PASS THROUGH SAID EDUCTOR TO SAID EXHAUST GAS DISCHARGE AREA.