Engine control with programmable automatic starting

• US 6,351,703 B1
• Filed: 06/06/2000
• Issued: 02/26/2002
• Est. Priority Date: 06/06/2000
• Status: Expired due to Fees

• Current Assignee: Detroit Diesel Corporation (Mercedes-Benz Group AG)
• Original Assignee: Detroit Diesel Corporation (Mercedes-Benz Group AG)
• Inventors: Avery, Richard M. Jr.
• Primary Examiner(s): Dolinar, Andrew M.
• Application Number:
  US09/587,967
• Time in Patent Office: 630 Days
• Field of Search: 701/112, 701/113, 123/179.2, 123/179.3, 123/179.4, 307/10.4, 307/10.6, 290/38.C
• US Class Current: 701/112
• CPC Class Codes: B60R 25/04 operating on the propulsion system, e.g. engine or drive motor
• CPC Class Codes: B60R 25/33 of global position, e.g. by providing GPS coordinates
• CPC Class Codes: B60W 2556/50 of positioning data, e.g. GPS [Global Positioning System] data
• CPC Class Codes: F02N 11/0807 Remote means
• CPC Class Codes: F02N 11/0811 using a timer

Abstract

A system and method for controlling an internal combustion engine having an electronic engine controller to automatically start the engine at a programmable day/date and time include determining a current day/date and time, comparing the current day/date and time to a day/date and time previously stored in the programmable memory for automatically starting the engine, determining whether current conditions are acceptable for automatically starting the engine, and controlling the engine to automatically start the engine beginning at the programmed day/date and time. In one embodiment, a remotely located computer transmits a signal to coordinate automatic starting of a plurality of engines, such as in a truck/bus fleet, or for construction equipment at a construction site. Security features are provided to reduce the possibility of unauthorized use/theft of a vehicle or other equipment after being automatically started. Security features may include limiting distance traveled, limiting maximum speed, and/or limiting any movement of the vehicle/equipment. Engine torque may be reduced or the engine automatically stopped when a security violation is triggered.

Claims

1. A method for controlling an internal combustion engine installed in a vehicle having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine including determining whether the vehicle is stationary; and

controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started.

2. The method of claim 1 wherein the step of determining whether the vehicle is stationary comprises determining whether a parking brake is set.

3. The method of claim 1 wherein the step of determining whether the vehicle is stationary comprises monitoring a vehicle speed sensor signal.

4. The method of claim 3 wherein monitoring the vehicle speed sensor signal comprises comparing vehicle speed to a selectable threshold and determining conditions are acceptable for automatically starting the engine if the vehicle speed is less than the selectable threshold.

5. A method for controlling an internal combustion engine installed in a vehicle having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine;

controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started; and

controlling the engine to limit vehicle speed until a valid password is entered.

6. The method of claim 5 wherein controlling the engine to limit vehicle speed comprises reducing available engine torque when vehicle speed exceeds a programmable threshold.

7. A method for controlling an internal combustion engine having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine;

attempting to automatically start the engine beginning at the previously stored day and/or date and time for automaticlaly starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started; and

automatically stopping the engine if the vehicle is moved without entry of a valid authorization code.

8. A method for controlling an internal combustion engine installed in a vehicle having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine;

controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started;

attempting to automatically start the engine when any one of the battery voltage, oil temperature, fuel temperature and ambient temperature drops below a programmable value without regard to the current date and time; and

storing an indication of the current date and time and which condition triggered an automatic engine start when an automatic start is attempted.

9. A method for controlling an internal combustion engine installed in a vehicle having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

receiving a wireless signal transmitted from a control computer to determine the date and time for automatically starting the engine;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine including determining whether the vehicle is stationary; and

controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started.

10. The method of claim 9 wherein the step of controlling comprises:

energizing the starter for a first period;

pausing for a second period;

repeating the steps of energizing and pausing a predetermined number of times until the engine starts or the predetermined time has elapsed.

11. The method of claim 9 wherein the step of determining whether current conditions are acceptable comprises determining whether an ignition switch is on.

12. The method of claim 9 wherein the step of determining whether current conditions are acceptable for automatically starting the engine comprises requiring entry of a password.

13. The method of claim 9 further comprising:

monitoring at least one condition selected from a group including battery voltage, oil temperature, fuel temperature, and/or ambient temperature; and

automatically starting the engine when any one of the battery voltage, oil temperature, fuel temperature, and ambient temperature drops below a programmable value without regard to the current date and time.

14. A method for controlling an internal combustion engine installed in a vehicle having an electronic engine controller in communication with a starter motor and a plurality of fuel injectors, the electronic engine controller including a programmable memory for storing instructions and parameters for controlling the engine, the method comprising:

determining a current day and/or date and time;

comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

determining whether current conditions are acceptable for automatically starting the engine;

automatically starting the engine at the previously stored day and/or date and time; and

wherein the previously stored date and time is transmitted by a remotely located control computer.

15. A method for controlling a plurality of vehicles to automatically start the engines, the method comprising:

transmitting a signal from a remotely located computer at a programmable day and/or date and time to the plurality of vehicles to enable the plurality of engines to start;

for each engine;

determining whether conditions are acceptable for automatically starting the engine; and

repeatedly attempting to start the engine while conditions are acceptable for automatically starting the engine until the engine starts or a predetermined number of attempts have been completed.

16. The method of claim 15 wherein the step of transmitting comprises transmitting a schedule having a plurality of automatic engine starting days or dates and times to the plurality of engines.

17. The method of claim 15 wherein the step of determining whether conditions are acceptable comprises determining whether a parking brake is set.

18. The method of claim 15 wherein the step of determining whether conditions are acceptable comprises monitoring vehicle speed.

19. The method of claim 15 further comprising limiting vehicle speed after automatic starting of the engine until a password is entered.

20. The method of claim 19 wherein vehicle speed is limited to substantially zero.

21. The method of claim 15 further comprising limiting vehicle speed after automatic starting of the engine until a switch requiring a key for activation has been activated.

22. The method of claim 15 further comprising limiting distance traveled by the vehicle after automatically starting the engine.

23. The method of claim 22 wherein limiting distance traveled by the vehicle comprises limiting distance traveled as determined by number of revolutions detected by a vehicle speed sensor.

24. The method of claim 22 wherein limiting distance traveled by the vehicle comprises limiting distance traveled as determined by a signal transmitted to and/or from the vehicle.

25. The method of claim 22 wherein limiting distance traveled by the vehicle comprises limiting distance traveled as determined by a GPS system.

26. Apparatus for controlling an internal combustion engine having a starter motor and a plurality of fuel injectors, the apparatus comprising:

an engine controller including a programmable memory for storing data representing instructions and parameters for controlling the engine, the instructions including instructions for determining a current date and time, comparing the current date and time to the date and time received via a wireless signal transmitted from a control computer and previously stored in the programmable memory, determining whether current conditions are acceptable for automatically starting the engine, and controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored date and time and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started.

27. A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine, the computer readable storage medium comprising:

instructions for determining a current day and/or date and time;

instructions for storing a date and time for automatically starting the engine received via a wireless signal transmitted from a control computer;

instructions for comparing the current day and/or date and time to the day and/or date and time previously stored in the programmable memory for automatically starting the engine;

instructions for determining whether current conditions are acceptable for automatically starting the engine; and

instructions for controlling the starter motor and fuel injectors to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started.

28. A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine, installed in a vehicle the computer readable storage medium comprising:

instructions for determining a current day and/or date and time;

instructions for comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

instructions for determining whether current conditions are acceptable for automatically starting the engine;

instructions for attempting to automatically start the engine beginning at the previously stored day and/or date and time for automatically starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started; and

instructions for controlling the engine to limit vehicle speed until a valid password is entered.

29. A computer readable storage medium having stored data representing instructions executable by a computer to control an internal combustion engine, installed in a vehicle the computer readable storage medium comprising:

instructions for determining a current day and/or date and time;

instructions for comparing the current day and/or date and time to a day and/or date and time previously stored in the programmable memory for automatically starting the engine;

instructions for determining whether current conditions are acceptable for automatically starting the engine;

instructions for attempting to automatically start the engine beginning at the previously stored day and/or date and time for automaticlaly starting the engine and continuing for a predetermined time thereafter while the current conditions are acceptable for automatically starting the engine or until the engine has started; and

instructions for automatically stopping the engine if the vehicle is moved without entry of a valid authorization code.