| 摘要 |
PROBLEM TO BE SOLVED: To provide a shift control device of a hydrostatic pressure assist vehicle which includes a hydrostatic pressure assist mechanism, improves fuel consumption at a fuel supply stop, and avoids the deterioration in drivability.SOLUTION: A device includes a pump/motor connected to an in-vehicle engine and an accumulator, the pump/motor is operated as a pump and a hydrostatic pressure is discharged and accumulated in the accumulator during deceleration, while the pump/motor is operated as a motor and an engine drive is assisted by the accumulated hydrostatic pressure during starting etc. The device determines whether a vehicle is in a deceleration state or not (S10), determines whether a hydrostatic pressure assist mechanism should regenerate deceleration energy or not when the vehicle is in the deceleration state (S12), calculates a target value of an engine speed within a range of enabling a fuel supply stop to the engine when determining that the mechanism should regenerate (S16), and controls a transmission gear ratio of an automatic transmission toward an increase side to be at the engine speed. |
