DISPOSITIF COMPORTANT UNE VANNE DE COMMANDE ET UNE POMPE A CAPACITE VARIABLE ET UN CIRCUIT DE PRESSION HYDRAULIQUE D'UN MOTEUR A COMBUSTION INTERNE DANS LEQUEL LE DISPOSITIF EST UTILISE

摘要

In a hydraulic pressure circuit including an introduction section through which oil is introduced, a main passage section installed at a downstream side of the introduction section to be communicated with a supply section through which oil is supplied to each of slide sections of an internal combustion engine, a branch passage branched from the main passage section to supply oil to a hydraulic pressure actuator, and a control valve having a valve body which is moved in accordance with a pressure of an upstream side thereof, and a variable capacitance pump configured to drain oil to the introduction section, the variable capacitance pump is configured to vary a drained flow quantity in accordance with the drained pressure of oil and a pressure under which the oil drained flow quantity is started to be varied is higher than a pressure under which the valve body is started to move.