Oil pump sticking detection device and oil pump sticking detection method

摘要

An oil pump fixation detecting apparatus includes an oil pump, a discharge state switching unit, a target oil pressure setting unit, a pressure regulator, and a fixation determining unit. The discharge state switching unit performs control of switching a discharge state of the oil pump from a full-discharge state to a partial-discharge state. The fixation determining unit determines that the oil pump is not fixed in the full-discharge state in a case where oil pressure in a high-pressure oil passage has dropped by a predetermined value or more within a predetermined time, and determines that the oil pump is fixed in the full-discharge state in a case where the oil pressure in the high-pressure oil passage does not drop by the predetermined value or more.