HYBRID VEHICLE

摘要

A hybrid vehicle includes a control unit that performs control such that the motoring of an engine is carried out at a higher rotational speed when a required braking force is large than when the required braking force is small, from the start of charge of a battery to the start of rapid decrease in a charging power of the battery, in the case where predetermined control is performed to control a first motor and a second motor such that the battery is charged within a range of a permissible charging power through regenerative driving of the second motor and the motoring of the engine by the first motor with fuel injection stopped and that the required braking force at a braking request is applied to the vehicle, in response to the making of the braking request during the performance of cruise control or variable speed limiter control.

主权项

1. A hybrid vehicle comprising:
an engine; a first motor; a planetary gear having three rotary elements that are connected to a rotary shaft of the first motor, an output shaft of the engine and a drive shaft coupled to an axle respectively in such a manner as to be arranged in a sequence of the rotary shaft, the output shaft and the drive shaft in an alignment chart; a second motor that is connected to the drive shaft; a battery that exchanges power with the first motor and the second motor; a setting unit that sets a permissible charging power of the battery and a permissible discharging power of the battery; and a control unit that controls the engine, the first motor and the second motor such that the vehicle runs while the battery is charged/discharged within a range of the permissible charging power and a range of the permissible discharging power respectively, wherein the setting unit is configured to set the permissible charging power such that a time from start of charge of the battery to start of rapid decrease in a charging power of the battery becomes shorter and an amount of decrease per unit time at a time of start of rapid decrease in the charging power becomes larger when the charging power is large than when the charging power is small, in a case where the charge is continued, and the control unit is configured to perform control such that motoring of the engine is carried out at a higher rotational speed when a required braking force is large than when the required braking force is small, from start of the charge to start of rapid decrease in the charging power, in a case where predetermined control is performed to control the first motor and the second motor such that the battery is charged within the range of the permissible charging power through regenerative driving of the second motor and motoring of the engine by the first motor with fuel injection stopped and that the required braking force at a braking request is applied to the vehicle, in response to making of the braking request during performance of cruise control or variable speed limiter control.