Internal combustion engine

Claim 1

A COMPRESSION-IGNITION ENGINE COMPRISING A PLURALITY OF CYLINDERS OF THE OPEN CHAMBER TYPE WITH THE CYLINDERS IN AT LEAST TWO BANKS ARRANGED IN A V, A PISTON IN EACH CYLINDER, A CRANKSHAFT, AND A CONNECTING ROD CONNECTING EACH PISTON WITH THE CRANKSHAFT, SAID CRANKSHAFT HAVING CRANK PIN BEARINGS EQUAL IN NUMBER TO THE NUMBER OF CYLINDERS IN EACH BANK WITH INTERMEDIATE MAIN BEARINGS BETWEEN EACH PAIR OF CRANK PIN BEARINGS AND THE CONNECTING ROD FOR EACH CYLINDER IN EACH BANK BEING CONNECTED TO THE CRANK PIN BEARING TO WHICH THE CONNECTING ROD FOR THE CORRESPONDING CYLINDER IN THE OPPOSITE BANK IS CONNECTED, THE RATIO OF THE STROKE OF EACH OF SAID PISTONS TO THE BORE OF SAID CYLINDERS BEING LESS THAN 0.9 AND THE BORE OF SAID CYLINDERS BEING NOT LESS THAN 4 INCHES, THE RATIO OF THE LENGTH OF SAID CONNECTING RODS TO THE BORE OF SAID CYLINDERS BEING LESS THAN 1.75, AND THE RATIO OF THE DISTANCE FROM THE CRANKSHAFT AXIS TO THE REMOTE END OF SAID CYLINDERS TO THE BORE OF SAID CYLINDERS BEING LESS THAN 2.8, EACH OF SAID CYLINDERS HAVING A CYLINDER HEAD AND AN INJECTOR IN SAID HEAD LOCATED SUBSTANTIALLY ON THE AXIS OF THE CYLINDER AND VALVES IN SAID CYLINDER HEAD, SAID VALVES HAVING OPENINGS EXTENDING FROM ADJACENT THE INJECTOR TO SUBSTANTIALLY THE CIRCUMFERENCE OF THE CYLINDER, THE OPENINGS OF SAID VALVES FOR EACH CYLINDER THEREBY BEING RELATIVELY LARGE FOR THE CYLINDER DISPLACEMENT OF THE CYLINDER HAVING THE AFORESAID STROKE-TO-BORE RATIO, EACH OF SAID PISTONS HAVING A SPRAY RECEIVING CAVITY IN ITS CROWN WITH THE PORTION OF THE CROWN EXTERIORLY OF SAID CAVITY COOPERATING WITH SAID CYLINDER HEAD TO FORCE AIR INWARDLY AS THE PISTON APPROACHES TOP DEAD CENTER TO INTERMIX WITH THE SPRAYED FUEL, WHEREBY SAID ENGINE HAS A COMPACT STRUCTURE AND A HIGH SPECIFIC POWER OUTPUT.