| 摘要 |
PROBLEM TO BE SOLVED: To provide a hydraulic control device which can determine whether or not an abnormality occurs from a detection value of supply pressure.SOLUTION: A hydraulic control device 1 controls supply pressure being hydraulic pressure which is supplied to friction elements 5a to 5e. The friction elements 5a to 5e comprise pistons 7 which can reciprocate by the supply pressure, and first engagement plates 6a and second engagement plates 6b which are engaged with each other and released in the engagement by the movement of the pistons 7. The hydraulic control device comprises supply pressure command means 50a which acquires a command value of the supply pressure, and supply pressure detection means 53a to 53e which detect the supply pressure. The hydraulic control device has a response confirmation part which confirms a response which is temporarily increased or decreased by a waveform of a temporal change of the command value of the supply pressure, also comprises a TCU 50 which determines whether or not a detection value of the supply pressure corresponding to the response confirmation part exists in the detection value of the supply pressure which is acquired by the supply pressure detection means 53a to 53e, and sets determination for determining whether or not the detection value of the supply pressure corresponding to the response confirmation part exists as a reference for the determination of an abnormality.SELECTED DRAWING: Figure 1 |
