Internal combustion engines

Claim 1

AN INTERNAL COMBUSTION ENGINE OF THE LIQUID FUEL INJECTION, COMPRESSION IGNITION TYPE COMPRISING A CYLINDER AND CYLINDER HEAD ASSEMBLY, A PISTON ARRANGED TO RECIPROCATE WITHIN THE CYLINDER AND TO APPROACH THE CYLINDER HEAD CLOSELY AT THE END OF THE COMPRESSION STROKE, A COMBUSTION POCKET FORMED IN EACH OF SAID CYLINDER HEAD AND PISTON CROWN, ONE OF SAID POCKETS BEING INVERTED RELATIVE TO THE OTHER AND BOTH POCKETS BEING IN DIRECT COMMUNICATION WITH THE CYLINDER SPACE THROUGH THEIR RESPECTIVE OPEN MOUTHS, SAID MOUTHS HAVING A CROSS-SECTIONAL AREA PERMITTING AT LEAST SUBSTANTIALLY UNRESTRICTED FLOW OF GASES THERETHROUGH AND BEING LOCATED AT LOCI SUBSTANTIALLY DISPLACED LATERALLY FROM THE AXIS OF SAID CYLINDER, WHEREBY DURING SAID COMPRESSION STROKE AIR IS INTRODUCED INTO SAID POCKETS MAINLY FROM ONE SIDE THEREOF TO FORM AN AIR CHARGE THEREIN, BOTH OF SAID POCKETS BEING SO SHAPED AS TO IMPART IN CONJUNCTION WITH THE LOCATION THEREOF A NATURAL STATE OF ROTATION TO THE AIR INTRODUCED THEREIN, THE CENTERS OF VOLUME OF SAID POCKETS LYING IN SUBSTANTIALLY THE SAME PLANE AS THE CYLINDER AXIS AND THE LOCUS OF ONE POCKET MOUTH BEING NEARER THE CYLINDER AXIS THAN THE LOCUS OF THE OTHER MOUTH, WHEREBY SAID MOUTHS OVERLAP TO A LIMITED EXTENT TO PROVIDE A RESTRICTED THROAT OF SUBSTANTIALLY LESS CROSS-SECTIONAL AREA THAN THAT OF EITHER OF SAID POCKET MOUTHS THROUGH WHICH SAID POCKETS ARE IN COMMUNICATION WHILE SAID CYLINDER HEAD AND PISTON CROWN ARE IN PROXIMITY, AND MEANS FOR INJECTING FUEL INTO THE POCKET IN THE CYLINDER HEAD.