| 摘要 |
PROBLEM TO BE SOLVED: To elongate the life of an electric oil pump to be used as the aid of a main oil pump while suppressing its deterioration and avoiding its size increase. SOLUTION: The electric oil pump 40 is operated only for an operation allowable time depending on the durability of the electric oil pump 40, and then an engine 12 is started to supply hydraulic pressure with a mechanical oil pump 36. The continuous operation time for the electric oil pump 40 is restricted to elongate the life of the electric oil pump 40 while suppressing its deterioration and avoiding its size increase. COPYRIGHT: (C)2006,JPO&NCIPI |
