Abstract: According to the invention, an internal combustion engine piston cooling nozzle comprises a nozzle body, a transverse fixing plate and screwing means such as a fixing screw offset laterally at a distance between axes. The nozzle body comprises an axial bore containing valve means and a transverse bore receiving a cooling fluid outlet duct. The peripheral wall is thick around the transverse bore. The diametrally opposite portion of the peripheral wall is thinner because of the presence of an external recess facing the fixing screw. Thus the fixing screw may be moved closer, by reducing the distance between axes, which reduces the overall size of the cooling nozzle.

Abstract: According to the invention, an internal combustion engine piston cooling nozzle comprises a nozzle body, a transverse fixing plate and screwing means such as a fixing screw offset laterally at a distance between axes. The nozzle body comprises an axial bore containing valve means and a transverse bore receiving a cooling fluid outlet duct. The peripheral wall is thick around the transverse bore. The diametrally opposite portion of the peripheral wall is thinner because of the presence of an external recess facing the fixing screw. Thus the fixing screw may be moved closer, by reducing the distance between axes, which reduces the overall size of the cooling nozzle.

Abstract: A spray nozzle comprises a spray nozzle body through which there run an axial passage and a transverse bore to which a cooling fluid outlet injection conduit is connected. The spray nozzle body further comprises a sleeve in the shape of a cylinder of revolution coaxial with the axial passage. The outside diameter of the sleeve is such that it can be force-fitted into the fluid feed orifice of the cylinder, which is also a cylinder of revolution. The outside surface of the sleeve has a smooth or knurled portion. The spray nozzle is simply force-fitted into the cooling fluid feed orifice.