| 摘要 |
Electrical efficiency is improved by improving the motor operating point when there is a gear-shift request during deceleration/regeneration. A drivetrain from a drive source to drive wheel is provided with a motor-generator (MG) for implementing regeneration during deceleration and an automatic transmission (3) comprising an engaging clutch (8c) as a shifting element. The electric automobile comprises a gear-shift request assessment step (S1), a gear shifting permission assessment step (S4), and a shift initiation step (S5). In step (S1), an assessment is made as to whether a gear-shift request made during deceleration/regeneration is one in which a disengaging element or engaging element during a gear shift is the engaging clutch (8c). In step (S4), an assessment is made as to whether to grant gear shifting permission based on regeneration torque magnitude when an assessment indicates that the gear-shift request uses the engaging clutch (8c) as a disengaging element or engaging element. In step (S5), shifting is initiated according to the gear-shift request if a decision to grant gear shifting permission is made. |
