Method and Apparatus for Preserving Battery Operation and Life During Vehicle Post Idle Shutdown Control

• US 20090157232A1
• Filed: 11/05/2008
• Published: 06/18/2009
• Est. Priority Date: 12/13/2007
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Cooprider, Anthony Dwayne, Hanson, Ryan Edwin, Drogosch, Bradley Allen, Card, Daniel James, Wojcik, Karl William, Brombach, Ronald Patrick
• Granted Patent: US 8,457,859 B2
• Time in Patent Office: Days
• US Class Current: 700/297
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 10/30 including control of auxiliary equipment, e.g. air-conditioning compressors or oil pumps
• CPC Class Codes: B60W 2540/06 Ignition switch
• CPC Class Codes: B60W 30/18018 Start-stop drive, e.g. in a traffic jam
• CPC Class Codes: F16H 2312/14 Going to, or coming from standby operation, e.g. for engine start-stop operation at traffic lights

Abstract

A method for preserving battery operation and life during vehicle post idle shutdown, such vehicle having a delayed accessory power mode operative when an ignition state of the vehicle is in a non-engine running condition while an ignition switch of the vehicle is in the ON position to supply accessories in the vehicle the battery. The method includes: detecting whether the vehicle has been in an post idle shutdown condition and brake pedal not pressed and ignition state unchanged; and placing the vehicle in the delayed accessory power mode after detecting that the vehicle has been in an post idle shutdown condition and while the ignition switch is in the ON position.

Claims

1. A method for preserving battery operation and life during vehicle post idle shutdown, such vehicle having a delayed accessory power mode operative when an ignition state of the vehicle is in a non-engine running condition while an ignition switch of the vehicle is in the ON position to supply accessories in the vehicle the battery, such method comprising:

detecting whether the vehicle has been in an post idle shutdown condition and brake pedal not pressed and ignition state unchanged; and

placing the vehicle in the delayed accessory power mode after detecting that the vehicle has been in an post idle shutdown condition while the ignition switch is in the ON position.

2. The method recited in claim 1 wherein, after placing the vehicle in the delayed accessory power mode after detecting that the vehicle has been in a post idle shutdown condition, the mode is returned to a previous mode in response to a vehicle operator either touching a brake pedal state or changing vehicle ignition state.

3. The method recited in claim 2 wherein the detecting uses network message information indicating vehicle speed, brake pedal state, and vehicle ignition state input.

4. The method recited in claim 3 wherein information includes door ajar signals.