| 摘要 |
The present invention relates to a method for controlling HIS operation time considering inner oil pressure of a hydraulic circuit. The method for controlling HIS operation time considering inner oil pressure of a hydraulic circuit includes an ISG performing step for switching off an engine and storing the state of oil pressure in a hydraulic circuit provided in a transmission by performing idle-stop-and-go (ISG) when the vehicle stops; a stopped vehicle oil pressure condition measuring step for updating the condition of stopped vehicle oil pressure by figuring out the natural emission of a hydraulic circuit according to the stop time of vehicle; an ISG releasing step for switching on the engine according to an ISG release condition; a hydraulic circuit condition determining step for determining whether the hydraulic circuit is satisfied with a quick start condition; an oil pressure calculating step for calculating the internal oil pressure of a hydraulic circuit by checking the quantity of increased oil pressure in the hydraulic circuit increased by the operation of an oil pump as an engine RPM is increased if the HIS quick start condition is not satisfied; an HIS operation determining step for determining whether a hydraulic impulse oil storage can be operated by the internal oil pressure of the hydraulic circuit; and an HIS operation step for operating the hydraulic impulse oil storage. The method for controlling HIS operation time considering inner oil pressure of a hydraulic circuit can control all friction elements provided in a transmission by controlling the operation time of HIS although the HIS is arranged with a relatively small capacity, thereby minimizing transmission impact when an engine restarts immediately after the operation of ISG, which starts the engine. |
