Vehicle control device and method of controlling the same

• US 9,616,877 B2
• Filed: 05/13/2014
• Issued: 04/11/2017
• Est. Priority Date: 05/15/2013
• Status: Active Grant

• Current Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Original Assignee: Honda Motor Co., Ltd. (Honda Motor Company)
• Inventors: Tanida, Koji
• Primary Examiner(s): Bishop, Erin D
• Application Number:
  US14/276,358
• Publication Number:
  US 20140342875A1
• Time in Patent Office: 1,064 Days
• Field of Search: None
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/11 Stepped gearings
• CPC Class Codes: B60W 10/182 including control of parking brakes
• CPC Class Codes: B60W 2510/1005 Transmission ratio engaged
• CPC Class Codes: B60W 2510/101 Transmission neutral state
• CPC Class Codes: B60W 2520/04 Vehicle stop
• CPC Class Codes: B60W 2540/06 Ignition switch
• CPC Class Codes: B60W 2710/1005 Transmission ratio engaged
• CPC Class Codes: B60W 30/181 Preparing for stopping
• CPC Class Codes: B60Y 2400/76 Automatic gearshift to neutral

Abstract

While an engine (drive source) is being driven, when a long pressing operation (selection operation on a predetermined shift range) on an N-range button via a SBW shifter is executed, an engine drive/stop button blinks to notify a driver (step S1 and step S2). During the blinking of the engine drive/stop button, when the engine drive/stop button is pressed and the engine (drive source) is stopped, a neutral range is maintained without being switched to a parking range automatically (step 3 and step 4).

Claims

1. A vehicle control device comprising:

a control unit that switches a shift range of an automatic transmission by an actuator based on a vehicle speed detected by a vehicle speed sensor and an operation result of a shift range selector by a driver, wherein

the control unit switches the shift range to a parking range by the actuator automatically when a vehicle power source is turned off or a drive source is stopped in a state that the vehicle speed detected by the vehicle speed sensor is equal to or less than a predetermined speed and,

the control unit notifies the driver via a warning device when a predetermined shift range selection operation is executed by the shift range selector in a state that the vehicle power source is on or the drive source is being driven; and

the control unit maintains a neutral range when an operation in which the vehicle power source is turned off or the drive source is stopped is executed while the warning device notifies.

2. The vehicle control device according to claim 1, wherein the predetermined shift range selection operation is an operation in which a selection operation for the neutral range by the shift range selector continues for a time period equal to or more than a first predetermined period.

3. The vehicle control device according to claim 2, wherein the control unit notifies the driver for a second predetermined period via the warning device, stops a notification when the notification by the warning device exceeds the second predetermined period, and switches the shift range to the parking range by the actuator automatically when the operation in which the vehicle power source is turned off or the drive source is stopped is executed after the notification stops.

4. The vehicle control device according to claim 1, wherein the control unit notifies the driver for a predetermined period via the warning device, stops a notification when the notification by the warning device exceeds the predetermined period, and switches the shift range to the parking range by the actuator automatically when the operation in which the vehicle power source is turned off or the drive source is stopped is executed after the notification stops.

5. The vehicle control device according to claim 4, further comprising:

a starter switch that operates to start/stop the drive source, wherein

the warning device blinks an LED provided with the starter switch for the predetermined period.

6. The vehicle control device according to claim 1, wherein the control unit sets the vehicle power source partially in a start-up state for a predetermined period and notifies the driver of a state where the neutral range is maintained when the neutral range is maintained in the state that the vehicle power source is turned off or the drive source is stopped.

7. The vehicle control device according to claim 1, wherein the control unit sets a predetermined power source necessary for an operation of the shift range selector in a start-up state when the neutral range is maintained in the state that the vehicle power source is turned off or the drive source is stopped, and switches the automatic transmission to the parking range when an operation to select the parking range by the shift range selector is executed.

8. The vehicle control device according to claim 1, wherein the vehicle has a slope detector that detects a road slope, and the control unit switches to the parking range without maintaining the neutral range even if an operation to maintain the neutral range is executed in the state that the vehicle power source is turned off or the drive source is stopped when the road slope detected by the slope detector is equal to or more than a predetermined slope.

9. The vehicle control device according to claim 8, wherein the control unit switches to the parking range automatically when the vehicle speed detected by the vehicle speed sensor is equal to or more than the predetermined speed while the neutral range is maintained in the state that the vehicle power source is turned off or the drive source is stopped.

10. A method of controlling a vehicle control device having a control unit that switches a shift range of an automatic transmission by an actuator based on a vehicle speed detected by a vehicle speed sensor and an operation result of a shift range selector by a driver, the method executed by the control unit comprising:

switching the shift range to a parking range by the actuator automatically when a vehicle power source is turned off or a drive source is stopped in a state that the vehicle speed detected by the vehicle speed sensor is equal to or less than a predetermined speed,

notifying the driver via a warning device when a predetermined shift range selection operation is executed by the shift range selector in a state that the vehicle power source is on or the drive source is being driven; and

maintaining a neutral range when an operation in which the vehicle power source is turned off or the drive source is stopped is executed while the warning device notifies.

11. The method of controlling the vehicle control device according to claim 10, wherein the predetermined shift range selection operation is an operation in which a selection operation for the neutral range by the shift range selector continues for a time period equal to or more than a first predetermined period.

12. The method of controlling the vehicle control device according to claim 11, wherein the method further comprises:

notifying the driver for a second predetermined period via the warning device;

stopping the notification when the notification by the warning device exceeds the second predetermined period; and

switching the shift range to the parking range by the actuator automatically when the operation in which the vehicle power source is turned off or the drive source is stopped is executed after the notification stops.

13. The method of controlling the vehicle control device according to claim 10, wherein the method comprises:

notifying the driver for a predetermined period via the warning device;

stopping a notification when the notification by the warning device passes the predetermined period; and

switching the shift range to the parking range by the actuator automatically when the operation in which the vehicle power source is turned off or the drive source is stopped is executed after the notification stops.

14. The method of controlling the vehicle control device according to claim 13, vehicle control device further comprising:

a starter switch that operates to start/stop the drive source, wherein the method comprising;

blinking an LED provided with the starter switch for the predetermined period by the warning device.

15. The method of controlling the vehicle control device according to claim 10, wherein the method further comprises:

setting the vehicle power source partially in a start-up state for a predetermined period; and

notifying the driver of a state where the neutral range is maintained when the neutral range is maintained in the state that the vehicle power source is turned off or the drive source is stopped.

16. The method of controlling the vehicle control device according to claim 10, wherein the method further comprises:

setting a predetermined power source necessary for an operation of the shift range selector in a start-up state when the neutral range is maintained in a state that the vehicle power source is turned off or the drive source is stopped; and

switching the automatic transmission to the parking range when an operation to select the parking range by the shift range selector is executed.

17. The method of controlling the vehicle control device according to claim 10, wherein the vehicle has a slope detector that detects a road slope, and the method further comprises:

switching to the parking range without maintaining the neutral range even if an operation to maintain the neutral range is executed in the state that the vehicle power source is turned off or the drive source is stopped when the road slope detected by the slope detector is equal to or more than a predetermined slope.

18. The method of controlling the vehicle control device according to claim 17, wherein the method further comprises:

switching to the parking range automatically when the vehicle speed detected by the vehicle speed sensor is equal to or more than the predetermined speed while the neutral range is maintained in the state that the vehicle power source is turned off or the drive source is stopped.