OIL JET

摘要

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).