| 摘要 |
The present invention relates to an apparatus and method for controlling an oil pump of a transmission. According to the present invention, a rotation velocity is compensated with a compensation value in which the input shaft velocity of a transmission at a stop mode during the driving of the vehicle and the variation of oil temperature are reflected, and the power corresponding to the compensated rotation velocity is supplied to an electric oil pump. The compensation value in which the input shaft velocity of the transmission and the variation of oil temperature are reflected is stored as a learning value, and control commands for operating the electric oil pump are differently outputted through the learning value, thus allowing the rotation velocity of the electric oil pump to be controlled as optimal rotation velocity required for formation of line pressure. Accordingly, the power consumption caused by the excessive rotation of the electric oil pump can be minimized to improve fuel efficiency and, even if oil viscosity is increased by low oil temperatures to cause low rotation velocity, damage to the electric oil pump according to the characteristics of the electric oil pump maintaining the rotation velocity can be prevented so that the durability of the electric oil pump is improved. [Reference numerals] (103) Engine on?; (105) Drive an electric oil pump to the maximum rotation velocity; (107) Calculate the input velocity of a transmission and oil temperature at the next stop mode; (109) Calculate rotation velocity corresponding to the input velocity of the transmission and the oil temperature; (111) Supply power corresponding to the rotation velocity; (113) Calculate the input velocity of the transmission and the oil temperature variation at the next stop mode; (115) Calculate a compensation value corresponding to the calculated transmission input velocity and oil temperature; (117) Determine rotation velocity in which the compensation value is reflected; (119) Supply power corresponding to the determined rotation velocity; (121) Store the compensation value as a learning value; (AA) Start; (BB) End |
