Engine with improved cooling system

Claim 2

An internal combustion engine comprising a cylinder block having a top wall and a plurality of longitudinally aligned closely spaced cylinders opening through said top wall, said block defining a coolant jacket surrounding said cylinders and having a plurality of coolant openings through said top wall and connecting with said coolant jacket, said coolant openings being counterbored from the surface of said top wall to receive seal rings, a resilient seal ring in the counterbore of each of said coolant openings, a cylinder head having lower and side walls and defining an internal coolant jacket, said cylinder head being mounted with said lower wall sealingly opposing the top wall of said block so as to close the ends of said cylinders, said head having coolant openings through the lower wall and connecting the head coolant jacket with the block coolant openings to permit the passage of coolant from said block coolant jacket to said head coolant jacket, a plurality of flow director nozzles, each nozzle comprising a cup-shaped member having at least one nozzle opening in the side thereof and an open end with a radially inwardly extending flange on the open end, said flow director nozzles being secured one in each of said head coolant openings such that said nozzle opening is within said coolant jacket and arranged to direct water flow internally along said lower wall and the end of said radial flange is flush with said lower wall, said flange end engaging the resilient seal ring of its respective coolant opening to seal the interface against loss of coolant therethrough.

Claim 3

An internal combustion engine comprising a cylinder block having a top wall and a plurality of longitudinally aligned closely spaced cylinders opening through said top wall, said block defining a coolant jacket surrounding said cylinders and having a plurality of coolant openings through said top wall and connecting with said coolant jacket, said coolant openings being counterbored from the surface of said top wall to receive seal rings, a resilient seal ring in the counterbore of each of said coolant openings, a cylinder head having lower and side walls and defining an internal coolant jacket, said cylinder head being mounted with said lower wall sealingly opposing the top wall of said block so as to close the ends of said cylinders, said head having coolant openings through the lower wall and connecting the head coolant jacket with the block coolant openings to permit the Passage of coolant from said block coolant jacket to said head coolant jacket, a plurality of flow director nozzles, each nozzle comprising a cup-shaped assembly including a thin-walled openended cup-shaped element having at least one nozzle opening in the side thereof and a heavy-walled cylindrical element having a radially inwardly extending flange at one end, said cylindrical element being secured around the open end of the cup-shaped element with said flange against said open end, said flow director nozzles being secured one in each of said head coolant openings such that said nozzle opening is within said coolant jacket and arranged to direct water flow internally along said lower wall and the end of said radial flange is flush with said lower wall, said flange end engaging the resilient seal ring of its respective coolant opening to seal the interface against loss of coolant therethrough.

Claim 4

An internal combustion engine comprising a cylinder block having a top wall and a plurality of longitudinally aligned closely spaced cylinders opening through said top wall, said block defining a coolant jacket surrounding said cylinders and having a plurality of coolant openings through said top wall and connecting with said coolant jacket, said coolant openings being counterbored from the surface of said top wall to receive seal rings, a resilient seal ring in the counterbore of each of said coolant openings, a cylinder head having lower and side walls and defining an internal coolant jacket, said cylinder head being mounted with said lower wall sealingly opposing the top wall of said block so as to close the ends of said cylinders, said head having coolant openings through the lower wall and connecting the head coolant jacket with the block coolant openings to permit the Passage of coolant from said block coolant jacket to said head coolant jacket, a plurality of flow director nozzles, each nozzle comprising a cup-shaped assembly including a thin-walled openended cup-shaped element having at least one nozzle opening in the side thereof and a heavy-walled cylindrical element having a radially inwardly extending flange at one end, said cylindrical element being secured around the open end of the cup-shaped element with said flange against said open end, said flow director nozzles being secured one in each of said head coolant openings such that said nozzle opening is within said coolant jacket and arranged to direct water flow internally along said lower wall and the end of said radial flange is flush with said lower wall, said flange end engaging the resilient seal ring of its respective coolant opening to seal the interface against loss of coolant therethrough.

Claim 5

An internal combustion engine comprising a cylinder block having a top wall and a plurality of longitudinally aligned closely spaced cylinders opening through said top wall, said block defining a coolant jacket surrounding said cylinders and having a plurality of coolant openings through said top wall intermediate said cylinders and connecting with said coolant jacket, said coolant openings being counterbored from the surface of said top wall to receive seal rings, a resilient seal ring in the counterbore of each of said coolant openings, a cylinder head having lower and side walls and defining an internal coolant jacket, said cylinder head being mounted with said lower wall sealingly opposing the top wall of said block so as to close the ends of said cylinders, said head having coolant openings through the lower wall and connecting with the head coolant jacket and the block coolant openings to permit the passage of coolant from said block coolant jacket to said head coolant jacket, a plurality of flow director nozzles, each nozzle comprising a cup-shaped member having at least one nozzle opening in the side thereof and an open end with a radially inwardly extending flange on the open end and an opening in the flange about the size of said seal ring inner diameter, said flow director nozzles being installed one in each of said head coolant openings by pressing in place from the exterior of said lower wall such that said nozzle opening is within said coolant jacket and arranged to direct water flow laterally therein along said lower wall and the outer surface of said radial flange is flush with said lower wall, said flange outer surface being aligned with and engaging the resilient seal ring of its respective coolant opening to seal the interface against loss of coolant therethrough, an injector receiving wall in said cylinder head at each cylinder location and defining an opening through said head for receiving a fuel injector, said injector opening extending through said lower wall and centered on the axis of its respective cylinder, a plurality of exhaust passages extending laterally within said cylinder head coolant jacket and opening through one of said side walls, said exhaust passages connecting at each cylinder location with four exhaust ports opening through said lower wall at locations spaced around the respective injector opening for said cylinder location, said exhaust passages being bifurcated, with separate legs extending on opposite sides of said injector opening, one of said legs connecting with the two exhaust ports to the rear of said cylinder location and the other of said legs connecting with the two exhaust ports to the front of each cylinder location, said exhaust ports being positioned to provide a substantial coolant passage between said exhaust ports and said injector receiving wall for coolant flow therebetween.

Claim 6

An internal combustion engine comprising a cylinder block having a top wall and a plurality of longitudinally aligned closely spaced cylinders opening through said top wall, said block defining a coolant jacket surrounding said cylinders and having a plurality of coolant openings through said top wall intermediate said cylinders and connecting with said coolant jacket, said coolant openings being counterbored from the surface of said top wall to receive seal rings, a resilient seal ring in the counterbore of each of said coolant openings, a cylinder head having lower and side walls and defining an internal coolant jacket, said cylinder head being mounted with said lower wall sealingly opposing the top wall of said block so as to close the ends of said cylinders, said head having coolant openings through the lower wall and connecting with the head coolant jacket and the block coolant openings to permit the passage of coolant from said block coolant jacket to said head coolant jacket, a plurality of flow director nozzles, each nozzle comprising a cup-shaped member having at least one nozzle opening in the side thereof and an open end with a radially inwardly extending flange on the open end and an opening in the flange about the size of said seal ring inner diameter, said flow director nozzles being installed one in each of said head coolant openings by pressing in place from the exterior of said lower wall such that said nozzle opening is within said coolant jacket and arranged to direct water flow laterally therein along said lower wall and the outer surface of said radial flange is flush with said lower wall, said flange outer surface being aligned with and engaging the resilient seal ring of its respective coolant opening to seal the interface against loss of coolant therethrough, an injector receiving wall in said cylinder head at each cylinder location and defining an opening through said head for receiving a fuel injector, said injector opening extending through said lower wall and centered on the axis of its respective cylinder, a plurality of exhaust passages extending laterally within said cylinder head coolant jacket and opening through one of said side walls, said exhaust passages connecting at each cylinder location with four exhaust ports opening through said lower wall at locations spaced around the respective injector opening for said cylinder location, said exhaust passages being bifurcated, with separate legs extending on opposite sides of said injector opening, one of said legs connecting with the two exhaust ports to the rear of said cylinder location and the other of said legs connecting with the two exhaust ports to the front of each cylinder location, said exhaust ports being positioned to provide a substantial coolant passage between said exhaust ports and said injector receiving wall for coolant flow therebetween.