| 摘要 |
PROBLEM TO BE SOLVED: To ensure necessary supply of working fluid to an automatic transmission during an engine stop while minimizing the battery power consumption. SOLUTION: This control system comprises a mechanical oil pump 12 driven by an engine 1 to feed working fluid to an automatic transmission 3, a motor driven oil pump 15 driven by a motor generator 6 to supply working fluid to the automatic transmission 3, and a selector valve. The selector valve causes the discharge oil of the mechanical oil pump 12 to flow into the automatic transmission 3 when the discharge pressure of the mechanical oil pump 12 s not less than a preset value, and causes the discharge oil of the motor drive oil pump 15 to flow into the automatic transmission 3 when the discharge pressure of the mechanical oil pump 12 is less than the preset value. |
