| 摘要 |
PROBLEM TO BE SOLVED: To provide a control device of an oil pump for an automatic transmission, superior in fuel efficiency performance, by being constituted of a combination of an optimal standard of a mechanical oil pump and an electric oil pump.SOLUTION: A control device (1) of an oil pump for an automatic transmission includes at least a mechanical oil pump (12) driven by an engine (10) and delivering AT oil of a flow rate corresponding to a rotating speed of the engine, and an electric oil pump (42) driven by an electric motor (44) and constituted so as to be capable of controlling its pump rotating speed. The mechanical oil pump is constituted so that a shortage flow rate when the engine is an intermediate rotating speed area becomes 0, and the electric oil pump is constituted so that its maximum delivery flow rate becomes equal to a shortage flow rate when the engine is an idle speed area. |
