Vehicle shift control system

• US 10,166,953 B2
• Filed: 11/05/2010
• Issued: 01/01/2019
• Est. Priority Date: 11/24/2009
• Status: Active Grant

• Current Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Tsutsumi, Takahiko, Sekiya, Keisuke, Ueno, Koki, Kitaori, Ichiro, Suzuki, Toshinari
• Primary Examiner(s): Estremsky, Sherry L
• Application Number:
  US13/510,967
• Publication Number:
  US 20120252628A1
• Time in Patent Office: 2,979 Days
• Field of Search: 340453, 340456, 116 281
• CPC Class Codes: B60L 2220/18 Reluctance machines
• CPC Class Codes: B60L 2250/16 by display
• CPC Class Codes: B60L 50/16 with provision for separate direct mechanical propulsion
• CPC Class Codes: B60L 53/14 Conductive energy transfer
• CPC Class Codes: B60T 1/005 by locking of wheel or transmission rotation
• CPC Class Codes: F16H 2059/746 Engine running state, e.g. on-off of ignition switch
• CPC Class Codes: F16H 63/42 Ratio indicator devices
• CPC Class Codes: F16H 63/483 Circuits for controlling engagement of parking locks or brakes
• CPC Class Codes: Y02T 10/70 Energy storage systems for electromobility, e.g. batteries
• CPC Class Codes: Y02T 10/7072 Electromobility specific charging systems or methods for batteries, ultracapacitors, supercapacitors or double-layer capacitors
• CPC Class Codes: Y02T 90/14 Plug-in electric vehicles

Abstract

When a P lock state is set on the basis of a predetermined request signal for setting the P lock state, a P position indicator lamp (62) is turned on or off on the basis of the status of power supplied to the vehicle (10). For example, when the P lock state is set, the P position indicator lamp (62) is turned off when the power status is an ALL-OFF status where a combination meter (56), or the like, is not turned on or is raised to an ACC-ON status; whereas, when the P lock state is set, the P position indicator lamp (62) is turned on when the power status is an IG-ON status, when the power status is changed from the IG-ON status during vehicle driving to the ACC-ON status, or within a predetermined period of time from when the power status is changed from the IG-ON status to the ALL-OFF status.

Claims

1. A vehicle shift control system comprising:

a parking lock device that changes rotation teeth, rotating integrally with a drive wheel, between a locked state where a lock tooth engages the rotation teeth and a non-locked state where the locked state is released;

a lock indicator lamp that, when lit, indicates the parking lock device is in the locked state; and

an electronic control unit configured to automatically control the lock indicator lamp to be either on or off, without user intervention, in accordance with a status of power supplied to a vehicle,

wherein the parking lock device is activated on the basis of a request signal to change the rotation teeth between the locked state and the non-locked state to thereby electrically change a shift position for vehicle driving,

the status of power supplied to the vehicle is at least one of;

a power off status for disabling the vehicle from running and having all systems, including ignition and accessories, off,

a partially power on status for disabling the vehicle from driving but allowing operation of only part of functions of the vehicle while a display device for indicating vehicle information related to the vehicle driving remains turned off, and

a power on status for turning on the display device and enabling the vehicle to run,

when the status of power supplied to the vehicle is the power off status for disabling the vehicle from running, the electronic control unit is configured to automatically control the lock indicator lamp to be off, without user intervention, and

when the status of power supplied to the vehicle is raised from the power off status to the partially power on status for disabling the vehicle from driving but allowing operation of only part of functions of the vehicle while the display device for indicating vehicle information related to the vehicle driving remains turned off, the electronic control unit is configured to automatically control the lock indicator lamp to be off irrespective of ambient lighting, without user intervention, even if the request signal is for changing to the locked state.

2. The vehicle shift control system according to claim 1, wherein

the vehicle includes an electric motor as a driving force source and an electrical storage device that supplies stored electric power to the electric motor,

during a stop of the vehicle, the electrical storage device is chargeable with electric power supplied from an external power supply to the vehicle, and

a predetermined request signal is the request signal for setting the locked state, which is output when the charging is performed.

3. The vehicle shift control system according to claim 2, wherein

the electronic control unit is configured to automatically control the lock indicator lamp to be on, without user intervention, within a predetermined period of time from when the charging is started.

4. The vehicle shift control system according to claim 1, wherein

when the status of power supplied to the vehicle is the power on status for turning on the display device for indicating vehicle information related to vehicle driving and enabling the vehicle to run, the electronic control unit is configured to automatically control the lock indicator lamp to be on, without user intervention.

5. The vehicle shift control system according to claim 1, wherein

when the status of power supplied to the vehicle is changed from the power on status during vehicle driving to the partially power on status for disabling the vehicle from running but allowing operation of only part of functions of the vehicle while the display device remains turned off, or within a predetermined period of time from when the status of power supplied to the vehicle is changed from the power on status to the power off status for disabling the vehicle from running, the electronic control unit is configured to automatically control the lock indicator lamp to be on, without user intervention,

in a case where the status of power supplied to the vehicle is changed from the power on status during vehicle driving to the partially power on status, a predetermined request signal, which is the request signal for setting the locked state, is output on the basis of a position signal corresponding to an operating position of an operating device for changing the shift position, and

in a case within the predetermined period of time from when the status of power supplied to the vehicle is changed from the power on status to the power off status, the predetermined request signal is output as the status of power supplied to the vehicle is changed from the power on status to the power off status.

6. The vehicle shift control system according to claim 1, wherein

the electronic control unit is configured to:

determine that the vehicle has entered a charging state at a given time; and

automatically control the lock indicator lamp to turn off, without user intervention, at a predetermined period after the given time.

7. The vehicle shift control system according to claim 1, wherein

the electronic control unit is configured to automatically control the lock indicator lamp to be either on or off, without user intervention, after a predetermined period of time has elapsed since the status of power supplied to the vehicle has changed.

8. The vehicle shift control system according to claim 1, wherein

the electronic control unit is configured to automatically control the lock indicator lamp to be either on or off, without user intervention, after a predetermined period of time has elapsed since an electrical storage device of the vehicle begins charging.