Vehicle control method and vehicle control device

Patent metadata

Field	Value
Publication number	US-2022041164-A1
Application number	US-201817312546-A
Country	US
Kind code	A1
Filing date	Dec 13, 2018
Priority date	Dec 13, 2018
Publication date	Feb 10, 2022
Grant date	—

Abstract

A vehicle control device controls a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor. The vehicle is equipped with, as traveling modes, a normal mode, and an eco-mode having a larger regenerative braking force than the normal mode obtained such that rotational energy of the wheels is converted into electrical energy. A controller stops the internal combustion engine and switches from the normal mode to the eco-mode when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle.

First claim

1 .- 6 . (canceled)

7 . A vehicle control method of controlling a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor,
the vehicle being equipped with, as traveling modes, a normal mode, and an eco-mode having a larger regenerative braking force than the normal mode obtained such that rotational energy of the wheels is converted into electrical energy, the method comprising stopping the internal combustion engine and switching from the normal mode to the eco-mode when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle, wherein a responsiveness of a drive force of the drive motor is set to be slower for the eco-mode than for the normal mode.

8 . A vehicle control method of controlling a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor, the method comprising
when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle, stopping the internal combustion engine and increasing a regenerative braking force obtained such that rotational energy of the wheels is converted into electrical energy more than the regenerative braking force before detecting the abnormality, wherein a responsiveness of a drive force of the drive motor after detecting the abnormality is slower than before detecting the abnormality.

9 . The vehicle control method according to claim 7 , wherein:
the vehicle further includes a mechanical brake operated by use of an intake manifold negative pressure of the internal combustion engine and the method sets a maximum drive force of the drive motor to zero when a pressure difference between an atmospheric pressure and the intake manifold negative pressure is a predetermined value or lower.

10 . The vehicle control method according to claim 7 , wherein:
the vehicle is further equipped with an S-mode as the other traveling mode; the S-mode has the same regenerative braking force as the eco-mode, and has faster responsiveness of the drive motor than the eco-mode; and the method stops the internal combustion engine and switches from the S-mode to the eco-mode when detecting an abnormality in a device mounted on the vehicle during traveling of the vehicle.

11 . A vehicle control device of controlling a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor,
the vehicle being equipped with, as traveling modes, a normal mode, and an eco-mode having a larger regenerative braking force than the normal mode obtained such that rotational energy of the wheels is converted into electrical energy, the device comprising a controller configured to stop the internal combustion engine and switch from the normal mode to the eco-mode when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle, wherein a responsiveness of a drive force of the drive motor is set to be slower for the eco-mode than for the normal mode.

12 . A vehicle control device of controlling a vehicle including a drive motor connected to a rotation shaft of wheels, a battery that supplies electricity to the drive motor, and an internal combustion engine connected to the drive motor,
the device comprising a controller configured to, when detecting at least an abnormality in the internal combustion engine during traveling of the vehicle, stop the internal combustion engine and increase a regenerative braking force obtained such that rotational energy of the wheels is converted into electrical energy more than the regenerative braking force before detecting the abnormality, wherein a responsiveness of a drive force of the drive motor after detecting the abnormality is slower than before detecting the abnormality.

Assignees

• Nissan Motor

Inventors

• Hoshi Kiyoshi
• Nakada Naoki
• Gotou Kenichi
• Shimizu Takayuki
• Nakamura Yohei

Classifications

• Y02T10/84

  Data processing systems or methods, management, administration · CPC title

• B60W2050/0297

  Control Giving priority to different actuators or systems · CPC title

• B60W2050/0295

  Inhibiting action of specific actuators or systems · CPC title

• B60W2710/083

  Torque · CPC title

• B60W50/082

  Selecting or switching between different modes of propelling · CPC title