Methods and systems for activating a stop/start engine

• US 10,371,112 B1
• Filed: 02/09/2018
• Issued: 08/06/2019
• Est. Priority Date: 02/09/2018
• Status: Active Grant

• Current Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Original Assignee: Ford Global Technologies, LLC (Ford Motor Company)
• Inventors: Khafagy, Hafiz, Makkiya, Hussam, Awadi, Ahmed, Rademacher, Eric, Siddiqui, Siraj
• Primary Examiner(s): Vilakazi, Sizo B
• Application Number:
  US15/893,374
• Publication Number:
  US 20190249635A1
• Time in Patent Office: 543 Days
• Field of Search: 1231794, 701112
• CPC Class Codes: F02N 11/003 said electric motor being also used as a drive for auxiliaries, e.g. for driving transmission pumps or fuel pumps during engine stop
• CPC Class Codes: F02N 11/0803 characterised by means for initiating engine start or stop F02N11/0814 takes precedence
• CPC Class Codes: F02N 11/0818 Conditions for starting or stopping the engine or for deactivating the idle-start-stop mode
• CPC Class Codes: F02N 11/0825 related to prevention of engine restart failure, e.g. disabling automatic stop at low battery state
• CPC Class Codes: F02N 11/084 State of vehicle accessories, e.g. air condition or power steering
• CPC Class Codes: F02N 2200/061 Battery state of charge [SOC]
• CPC Class Codes: F02N 2200/0802 Transmission state, e.g. gear ratio or neutral state
• CPC Class Codes: F02N 2200/0806 Air condition state
• CPC Class Codes: F02N 2300/306 with external senders or receivers, e.g. receiving signals from traffic lights, other vehicles or base stations
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

Systems and methods for improving operation of a vehicle are presented. In one example, a controller notifies a human vehicle driver before electric power consumers that are electrically coupled to the vehicle are deactivated. The controller may notify the human driver in response to a state of charge of a vehicle battery.

Claims

1. A method for operating an engine, comprising:

via a controller, automatically stopping the engine;

sending a notification to a human driver of a vehicle while the engine is automatically stopped that one or more electric power consumers coupled to the vehicle will be deactivated in a predetermined amount of time unless the human driver performs an engine reactivation procedure at the vehicle, where the human driver is not occupying the vehicle; and

receiving notification via the controller from the human driver to deactivate the one or more electric power consumers to extend the predetermined amount of time.

2. The method of claim 1, where sending the notification to the human driver includes sending a text message to a cellular phone of the human driver.

3. The method of claim 1, where sending the notification to the human driver includes sending a message to a pager of the human driver.

4. The method of claim 1, where sending the notification to the human driver includes sending a message to a software application of a cellular phone of the human driver.

5. The method of claim 1, where sending the notification includes sending an indication of the predetermined amount of time until the one or more electric power consumers is deactivated to the human driver.

6. The method of claim 1, further comprising deactivating the one or more electric power consumers via opening a contactor in response to the human driver not performing the engine reactivation procedure.

7. The method of claim 6, where the engine reactivation procedure comprises applying a brake pedal or an accelerator pedal.

8. The method of claim 1, where sending the notification to the human driver includes sending data to a satellite.

9. A method for operating an engine, comprising:

via a controller, automatically stopping the engine;

sending a notification to a human driver of a vehicle while the engine is automatically stopped that one or more electric power consumers coupled to the vehicle and receiving electrical power from an electrical energy storage device will be deactivated in a predetermined amount of time unless the human driver performs an engine reactivation procedure at the vehicle, the human driver not occupying the vehicle; and

evaluating an identity of the human driver occupying the vehicle after sending the notification.

10. The method of claim 9, where evaluating the identity of the human driver includes the controller receiving a token from a key fob.

11. The method of claim 9, where the engine reactivation procedure includes the human driver entering a proximity of the vehicle with a key fob.

12. The method of claim 9, further comprising only automatically starting the engine after the evaluation confirms the identity of the human driver.

13. The method of claim 9, further comprising only supplying electrical power to the one or more electric power consumers after the engine is automatically stopped and the human driver exits the vehicle when a transmission of the vehicle is engaged in park.

14. A vehicle system in a vehicle, comprising:

an engine;

one or more electrical energy consumers that are in selective electrical communication with an electric energy storage device; and

an engine controller coupled to the engine, the engine controller including executable instructions stored in non-transitory memory to;

automatically stop the engine via the controller;

determine an electric energy device state of charge; and

when a human driver is not occupying the vehicle, notify the human driver that the one or more electrical energy consumers will be deactivated when the human driver does not perform an engine starting procedure within a predetermined amount of time.

15. The vehicle system of claim 14, where notifying the human driver includes sending data to the human driver via a cellular communication network.

16. The vehicle system of claim 14, where notifying the human driver includes sending data to the human driver via a satellite.

17. The vehicle system of claim 14, where notifying the human driver includes sending data to the human driver via a radio frequency.

18. The vehicle system of claim 14, further comprising additional executable instructions stored in the non-transitory memory to automatically start the engine in response to the human driver performing the engine starting procedure.

19. The vehicle system of claim 18, further comprising additional executable instructions stored in the non-transitory memory to verify an identity of the human driver before automatically starting the engine.