HYDRAULIC CONTROL DEVICE

PROBLEM TO BE SOLVED: To smoothly engage a lockup clutch from a low state of delivery pressure of a pump.SOLUTION: Since this hydraulic control device includes an adjusting valve 50 for adjusting line pressure PL input from a line pressure oil passage 81 to engaging pressure P0 used for engaging the lockup clutch 16 and outputting it to an engaging pressure oil passage 82 for supplying a hydraulic fluid to an engaging oil chamber 11a, and a lockup control valve 60 for reducing the engaging pressure P0 input from the engaging pressure oil passage 82 and outputting it to a connecting oil passage 84 for supplying the hydraulic fluid to a releasing oil chamber 11b, even when the delivery pressure from a mechanical oil pump 31 is low when power output from an engine is relatively small, the lockup clutch 16 can be smoothly engaged.