Patent ID: 7360510

Claim:
An internal combustion engine piston cooling system, said engine comprising an engine block having an open lower face closed off by a crankcase, said system comprising cooling nozzles adapted to receive a pressurized cooling liquid and to spray jets of cooling liquid toward the pistons to be cooled, a plurality of nozzles fastened to a common feed manifold to which they are hydraulically connected and with which they form a mechanically rigid assembly, in which engine: said mechanically rigid assembly is associated with hydraulic interface means for providing the hydraulic connection of said common feed manifold to a cooling liquid feed circuit in said crankcase, said hydraulic interface means adapted to make said hydraulic connection as a result of fitting said crankcase under said engine block to close off its open lower face, fixing means for fixing said mechanically rigid assembly to said engine block away from moving components and independently of said crankcase, and a single common feed manifold carrying said cooling nozzles disposed in a row facing a row of pistons of an engine with in-line cylinders.