Compression-ignition engines

Claim 1

A COMPRESSION-IGNITION ENGINE A CYLINDER HAVING AN AXIS, A PISTON SLIDABLE IN SAID CYLINDER AND HAVING A FLAT CROWN, A CYLINDER HEAD HAVING AN UNDERSURFACE DEFINING TOGETHER WITH SAID PISTON AND SAID CYLINDER A MAIN COMBUSTION SPACE, SAID CYLINDER HEAD HAVING AN AUXILIARY CHAMBER OPENING INTO THE UNDERSURFACE OF THE CYLINDER HEAD, A BOTTOM PLATE OF RELATIVELY SMALL HEIGHT FITTED INTO SAID CYLINDER HEAD AND CLOSING SAID AUXILIARY CHAMBER, SAID BOTTOM PLATE HAVING A LOWER AND AN UPPER SURFACE, SAID LOWER SURFACE SUBSTANTIALLY COINCIDING WITH THE UNDERSURFACE OF SAID CYLINDER HEAD, SAID BOTTOM PLATE HAVING A DUCT BY WHICH SAID CHAMBER IS IN COMMUNICATION WITH SAID MAIN COMBUSTION SPACE, SAID DUCT BEING ARRANGED AT A SIDE OF SAID BOTTOM PLATE LYING NEAREST TO THE AXIS OF SAID CYLINDER, SAID BOTTOM PLATE BOUNDING SAID DUCT WITH A PERIPHERAL WALL SURFACE SUBSTANTIALLY PARALLEL TO SAID CYLINDER AXIS, A FUEL INJECTION NOZZLE IN SAID CYLINDER HEAD OPENING INTO SAID CHAMBER, SAID NOZZLE BEING DISPOSED OPPOSITE SAID BOTTOM PLATE TO INJECT A JET OF FUEL INTO SAID CHAMBER AT THE END OF THE COMPRESSION STROKE OF SAID PISTON, SAID FUEL BEING DIRECTED ONTO SAID BOTTOM PLATE SAID IMPINGING THEREON SUBSTANTIALLY AT A CENTRAL LOCATION OF SAID BOTTOM PLATE AT A POSITION MORE REMOTE FROM SAID CYLINDER AXIS THAN SAID DUCT, SAID CYLINDER HEAD HAVING IN THE UNDERSURFACE THEREOF OF WEDGE SHAPED RECESS LEADING FROM A POINT IN THE VICINITY OF SAID AXIS OF THE CYLINDER TO SAID DUCT, SAID CYLINDER HEAD HAVING AN UPPER WALL BOUNDING SAID RECESS WHICH IS INCLINED SUCH THAT THE HEIGHT OF SAID RECESS IS GREATER NEAR SAID DUCT THAN NEAR SAID AXIS OF THE CYLINDER, SAID BOTTOM PLATE HAVING A CAVITY IN THE UPPER SURFACE THEREOF ADAPTED FOR RETAINING FUEL THE PERIPHERAL WALL SURFACE OF THE BOTTOM PLATE WHICH BOUNDS SAID DUCT FORMING A SHARP INTERSECTING EDGE WITH SAID UPPER SURFACE OF THE BOTTOM PLATE, SAID INTERSECTING EDGE BEING PROXIMATE THE LOCATION OF FUEL IMPINGEMENT AND AT A GREATER DISTANCE FROM SAID LOWER SURFACE OF THE BOTTOM PLATE THAN IS A CENTER PORTION OF SAID UPPER SURFACE IN SAID CAVITY, SAID HEIGHT OF THE RECESS AT A LOCATION PROXIMATE THE DUCT BEING GREATER THAN SAID DISTANCE OF SAID INTERSECTING EDGE FROM SAID LOWER SURFACE OF THE BOTTOM PLATE, SAID DISTANCES, SAID RECESS HEIGHT, SAID INCLINATION OF THE UPPER WALL OF SAID RECESS, SAID LOCATION OF FUEL IMPINGEMENT AND INTERSECTING EDGE BEING ARRANGED SUCH THAT AIR DISPLACED BY THE ACTION OF THE PISTON THROUGH SAID RECESS SHORTLY BEFORE REACHING THE TOP DEAD CENTER POSITION IN SAID CHAMBER GENERATES FLOW OVER SAID INTERSECTING EDGE TO GENERATE AIR TURBULENCE IN THE CHAMBER IN THE VICINITY OF THE UPPER SURFACE OF THE BOTTOM PLATE AT THE LOCATION OF FUEL IMPINGEMENT THEREON FOR CARRYING AWAY FUEL VAPORS AND DROPLETS FROM SAID LOCATION AND INTO SAID CHAMBER WHEREBY THE VAPORS AND DROPLETS ARE INTIMATELY MIXED WITH THE AIR AND BURNED AT LEAST PARTLY THEREWITH.