FIELD: engine devices and pumps.
SUBSTANCE: oil supply device for an internal combustion engine includes: a variable displacement pump (1) that changes the outlet pressure at which the oil is discharged; an oil channel (2) through which the oil flows from the pump (1); an oil filter (3) and an oil cooler (4), each of which is installed in the oil channel (2); a bypass channel (5) connected to the oil channel (2) and bypassing the oil cooler (4), and a bypass valve (6) that opens and closes the bypass channel (5) in accordance with the oil pressure. The bypass valve (6) is controlled so as to control the oil flow through the oil cooler (4), depending on the control of the outlet pressure of the pump (1) in accordance with the operating conditions of the internal combustion engine.
EFFECT: reduced load of a variable displacement pump.
9 cl, 10 dwg
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