Abstract: A diesel combustion system with a re-entrant piston bowl utilizes momentum interaction with the bowl at multiple locations to cause recirculation of the partially burned fuel and combustion products in a toroidal flow so as to consume soot formed during an earlier portion of the combustion process, while reducing the formation of NOx and improving fuel efficiency of the engine.

Abstract: A compact lubrication fluid filtering and cooling assembly including a bracket (16) for simultaneously mounting a pair of lubrication filters, (12 and 14) and a lubrication fluid cooler (10) on the block (4) of an internal combustion engine equipped with an internally contained lubrication circuit and providing fluid connection therewith. The bracket (16) provides a plurality of fluid flow passages (30, 77, 80, 88 and 91a) whereby lubrication fluid is conducted from the main engine oil discharge port (24) into bracket (16) into a first discharge port (26) leading to filter (12) from which oil is returned to the bracket for delivery to cooler (10), and from cooler (10) back through bracket (16) to the main return port on the engine block.

Abstract: A cylinder liner is disclosed for an internal combustion engine including a cylindrical hollow body having a press fitted upper end and a stop located intermediate the liner ends for engaging an engine block liner stop to provide upper and lower seals for a coolant passage. The outside surfaces of the liner adjacent the press fitted upper end and the stop are formed to permit a settable plastic material to be used between the liner and engine block to assist in forming the coolant seal and to provide radial support to the liner to permit the lower 30 percent of the cylinder liner to be free of any direct contact with the engine block. This design also permits use of a smaller capacity cooling system and improves lubricating oil flow within the engine block.