Control device for vehicle

Patent metadata

Field	Value
Publication number	US-9376998-B2
Application number	US-201314375808-A
Country	US
Kind code	B2
Filing date	Feb 25, 2013
Priority date	Mar 15, 2012
Publication date	Jun 28, 2016
Grant date	Jun 28, 2016

Abstract

A device for controlling a vehicle is configured to determine whether or not a relay is fixedly closed before a vehicle travels and after a driver operates an ignition, and the driving of a starter motor and an SSG motor is inhibited when the relay is determined to be fixedly closed.

First claim

The invention claimed is:

1. A device for controlling a vehicle, comprising:
a main battery configured to supply power to a motor capable of rotatably driving a crankshaft of an engine;
a sub-battery configured to supply power to an electric component disposed in the vehicle;
a relay disposed between the motor and the sub-battery;
a fixed closed determination device configured to determine whether or not the relay is fixedly closed after an ignition of the vehicle is operated and before the vehicle begins to travel; and
a motor drive permission device configured to permit the motor to be driven when the relay is determined to not be fixedly closed, and inhibit the motor from being driven when the relay is determined to be fixedly closed.

2. The device for controlling a vehicle according to claim 1 , wherein
the fixed closed determination is configured to determine that the relay is fixedly closed before the vehicle travels and after the driver operates an ignition.

3. The device for controlling a vehicle according to claim 1 , wherein
the fixed closed determination device is configured to automatically stop the engine when a predetermined engine stopping condition is fulfilled while the vehicle is stopped, and afterward determine the relay is fixedly closed during an engine restart of an idling stop control for restarting the engine when a predetermined engine restart condition is fulfilled.

4. The device for controlling a vehicle according to claim 1 , wherein
the fixed closed determination device is configured to determine that the relay is fixedly closed while torque assist control for driving the motor is being implemented, while the vehicle is stopped and while the vehicle is traveling.

5. The device for controlling a vehicle according to claim 1 , wherein
the fixed closed determination device is configured to determine that the relay is fixedly closed on the basis of the power state of the sub-battery.

6. The device for controlling a vehicle according to claim 2 , wherein
the closed determination device is configured to automatically stop the engine when a predetermined engine stopping condition is fulfilled while the vehicle is stopped, and afterward determine the relay is closed during an engine restart of an idling stop control for restarting the engine when a predetermined engine restart condition is fulfilled.

7. The device for controlling a vehicle according to claim 2 , wherein
the closed determination device is configured to determine that the relay is closed while torque assist control for driving the motor is being implemented, while the vehicle is stopped and while the vehicle is traveling.

8. The device for controlling a vehicle according to claim 3 , wherein
the closed determination device is configured to determine that the relay is closed while torque assist control for driving the motor is being implemented, while the vehicle is stopped and while the vehicle is traveling.

9. The device for controlling a vehicle according to claim 2 , wherein
the closed determination device is configured to determine that the relay is closed on the basis of the power state of the sub-battery.

10. The device for controlling a vehicle according to claim 3 , wherein
the closed determination device is configured to determine that the relay is closed on the basis of the power state of the sub-battery.

11. The device for controlling a vehicle according to claim 4 , wherein
the closed determination device is configured to determine that the relay is closed on the basis of the power state of the sub-battery.

Assignees

• Nissan Motor

Inventors

• Mori Kouichi
• Takahashi Hironobu

Classifications

• F02N11/0833

  Vehicle conditions (F02N11/0822, F02N11/0825 take precedence) · CPC title

• F02N2011/0892

  Two coils being used in the starting circuit, e.g. in two windings in the starting relay or two field windings in the starter · CPC title

• Y02T10/48

  Cross-Sectional Technologies · mapped topic

• F02N2250/02

  Battery voltage drop at start, e.g. drops causing ECU reset · CPC title

• B60L11/1851

  Operations & Transport · mapped topic