| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an oil pump driving device for a hybrid vehicle, which can supply hydraulic fluid of the same oil amount on a test course and on a chassis dynamometer. <P>SOLUTION: The oil pump driving device for a hybrid vehicle includes: a mechanical oil pump (27) which is driven by an input shaft of an automatic transmission (3) and supplies the hydraulic fluid to the automatic transmission (3); an electric oil pump (28) which supplies the hydraulic fluid to the automatic transmission (3) by operation instruction, and which stops supply of the hydraulic fluid to the automatic transmission (3) by non-operation instruction; a shift range detection means (30) for detecting a shift range of the automatic transmission (3); and a control means which operates the mechanical oil pump (27) by driving a motor generator (29) until just before vehicle speed lowers and reaches a predetermined threshold and which outputs non-operation instruction to the electric oil pump (28), when the shift range of the automatic transmission (3) detected by the shift range detection means (30) is in a neutral range. <P>COPYRIGHT: (C)2012,JPO&INPIT |
