To provide a lubricating oil supply device of an internal combustion engine for restraining a driving loss and a delay of warming-up caused by installing a piston cooling jet.
When an engine load increases, an ECU 70 stops supply of an exciting current to an electromagnetic actuator 41 of an electromagnetic spool valve 8. Then, a spool 42 energized to a return spring 43 moves to the right side in the figure, and control oil from the electromagnetic spool valve 8 flows in a quantity increase side port 56 of an oil pump 4 via a quantity increase side control oil passage 62. Thus, a hydraulic actuator 52 drives a movable housing 51 in the leftward rotation direction, and a delivery quantity of the oil pump 4 increases. In a PCJ valve 9, the control oil from the quantity increase side control oil passage 62 is supplied to a control port 49, closing by a valve element 47 is released, a fourth feed oil passage 24 is opened, and engine oil from a jet nozzle 10 is injected toward an under surface of a piston 75.
TAKAYAMA NAOKI
OSADA MORIMASA
