Oil jet

Abstract

A body (2) of an oil jet (100) is provided with: an oil supply port (6) which opens into an oil passage (62) in a cylinder block (60) of an internal combustion engine; a cylinder (4) one end of which is communicated with the oil supply port (6) and the other end of which is closed; and an oil injection port (10) which opens on a side surface of the cylinder (4). A piston valve (20) is accommodated in the cylinder (4). The piston valve (20) forms in the cylinder (4) a differential pressure room (8) which is a closed compartment. Moreover, an orifice (22) which makes the differential pressure room (8) being communicated with a side of the oil supply port (6) is formed in the piston valve (20). The piston valve (20) is biased toward a position at which the oil injection port (10) is closed by a spring (14). Furthermore, a leak hole (42) which allows oil to be leaked outside of the body (2) from the differential pressure room (8) is formed in the body (2).

Dependencies are inferred from the claim text.