Method and system for controlling a vehicle engine during performance driving events

• US 8,290,666 B2
• Filed: 02/23/2009
• Issued: 10/16/2012
• Est. Priority Date: 02/23/2009
• Status: Active Grant

• Current Assignee: GM Global Technology Operations LLC (General Motors Company)
• Original Assignee: GM Global Technology Operations LLC (General Motors Company)
• Inventors: Turski, Michael P., O'Dea, Kevin A.
• Primary Examiner(s): Fleming, Faye M.
• Application Number:
  US12/390,697
• Publication Number:
  US 20100217489A1
• Time in Patent Office: 1,331 Days
• Field of Search: 701/36, 701/51, 701/67, 701/80, 701/48, 701/54, 701/110
• US Class Current: 701/48
• CPC Class Codes: B60W 10/06 including control of combustion engines
• CPC Class Codes: B60W 2510/0604 Throttle position
• CPC Class Codes: B60W 2510/0638 Engine speed
• CPC Class Codes: B60W 2510/0657 Engine torque
• CPC Class Codes: B60W 2520/10 Longitudinal speed
• CPC Class Codes: B60W 2520/105 Longitudinal acceleration
• CPC Class Codes: B60W 2520/14 Yaw
• CPC Class Codes: B60W 2540/10 Accelerator pedal position
• CPC Class Codes: B60W 2540/14 Clutch pedal position
• CPC Class Codes: B60W 2540/16 Ratio selector position
• CPC Class Codes: B60W 2540/18 Steering angle
• CPC Class Codes: B60W 30/18027 Drive off, accelerating from standstill
• CPC Class Codes: B60W 30/18145 Cornering
• CPC Class Codes: B60W 30/19 Improvement of gear change, e.g. by synchronisation or smoothing gear shift
• CPC Class Codes: F02D 11/105 characterised by the function converting demand to actuation, e.g. a map indicating relations between an accelerator pedal position and throttle valve opening or target engine torque
• CPC Class Codes: F02D 41/021 Introducing corrections for particular conditions exterior to the engine conjoint control of vehicle sub-units for propelling the vehicle B60W30/18
• CPC Class Codes: F02D 41/022 in relation with the clutch status
• CPC Class Codes: F02D 41/023 in relation with the gear ratio shifting conjoint control for improving gear change B60W30/19
• CPC Class Codes: F02D 41/263 the program execution being modifiable by physical parameters
• CPC Class Codes: F02D 41/28 Interface circuits

Abstract

A system and method for controlling a vehicle engine during one or more performance driving events, such as a performance takeoff, shifting or cornering event. The engine control system may be used to maintain stability when the vehicle is being driven in a competitive or aggressive fashion by temporarily controlling the vehicle engine through the manipulation of engine torque, engine speed or some other means. If the engine control system receives competing command signals from different vehicle subsystems, then the system may arbitrate or otherwise manage the competing command signals so that different subsystems can function together properly. In one embodiment, the engine control system blends the commands signals from two or more subsystems.

Claims

1. A method for controlling a vehicle engine, comprising the steps of:

(a) sensing at least one vehicle operating condition;

(b) determining if multiple vehicle subsystems are active, wherein an active vehicle subsystem can provide command signals for temporarily controlling the vehicle engine; and

(c) if multiple vehicle subsystems are active, then using the vehicle operating condition to automatically manage the output of the multiple vehicle subsystems so that the vehicle subsystems function together properly.

2. The method of claim 1, wherein step (a) further comprises sensing at least one vehicle operating condition that is selected from the group consisting of:

a steering wheel angle, an accelerator pedal position, a clutch pedal position, a gear shifter selection, a vehicle acceleration, a yaw rate, a vehicle speed, an engine speed, an engine torque, or a throttle valve position.

3. The method of claim 1, wherein step (a) further comprises sensing a vehicle speed and comparing the sensed vehicle speed to a first speed threshold;

and

if the sensed vehicle speed is less than the first speed threshold, then step (b) further comprises determining if one or more performance driving subsystems for lower speeds are active; and

if the sensed vehicle speed is greater than the first speed threshold, then step (b) further comprises determining if one or more performance driving subsystems for higher speeds are active.

4. The method of claim 3, wherein the first speed threshold is within the range 0-15 km/h, inclusive.

5. The method of claim 1, wherein step (b) further comprises determining if multiple performance driving subsystems are active, and at least one of the performance driving subsystems is selected from the group consisting of:

a shifting subsystem, a takeoff subsystem, or a cornering subsystem.

8. The method of claim 1, wherein step (b) further comprises determining if a shifting subsystem is active, and the shifting subsystem is a performance driving subsystem that provides engine command signals during performance shifting events that involve a manual or automatic transmission.

9. The method of claim 1, wherein step (b) further comprises determining if a cornering subsystem is active, and the cornering subsystem is a performance driving subsystem that provides engine command signals during performance takeoff events that involve cornering or handling.

10. The method of claim 1, wherein step (c) further comprises managing the output of the multiple vehicle subsystems by providing command signals from a single vehicle subsystem, and the single vehicle subsystem is selected with the use of at least one vehicle operating condition.

11. The method of claim 1, wherein step (c) further comprises managing the output of the multiple vehicle subsystems by blending engine command signals from a plurality of vehicle subsystems, and the plurality of vehicle subsystems are selected with the use of at least one vehicle operating condition.

12. The method of claim 11, wherein the blended engine command signals are from at least one vehicle subsystem selected from the group consisting of:

a takeoff subsystem, a shifting subsystem, or a cornering subsystem.

13. The method of claim 11, wherein the blended engine command signals are weighted according to one or more vehicle operating condition(s).

14. The method of claim 13, wherein the blended engine command signals are weighted according to a vehicle acceleration.

15. The method of claim 1, wherein step (c) further comprises managing the output of the multiple vehicle subsystems and controlling at least one of:

engine torque or engine speed.

6. A method for controlling a vehicle engine, comprising the steps of:

(a) sensing at least one vehicle operating condition;

(b) determining if multiple vehicle subsystems are active including a takeoff subsystem, where an active vehicle subsystem can provide command signals for temporarily controlling the vehicle engine, and the takeoff subsystem is a performance driving subsystem that provides engine command signals during performance takeoff events that involve vehicle acceleration; and

(c) if multiple vehicle subsystems are active, then using the vehicle operating condition to manage the output of the multiple vehicle subsystems.

7. The method of claim 6, wherein the takeoff subsystem provides engine speed command signals during a first stage of operation and engine torque command signals during a second stage of operation, and the first and second stages of operation are determined by clutch pedal position.

16. A method for controlling a vehicle engine, comprising the steps of:

(a) receiving engine command signals from first and second vehicle subsystems;

(b) producing blended engine command signals from the engine command signals received from the first and second vehicle subsystems, wherein the blended engine command signals incorporate output from the first and second vehicle subsystems; and

(c) controlling the vehicle engine with the blended engine command signals.

17. The method of claim 16, wherein step (a) further comprises receiving engine command signals from at least one performance driving subsystem selected from the group consisting of:

a shifting subsystem, a takeoff subsystem, or a cornering subsystem.

18. The method of claim 17, wherein step (a) further comprises receiving engine command signals at a fraction control module.

19. The method of claim 16, wherein the blended engine command signals are weighted according to one or more vehicle operating condition(s).

20. The method of claim 19, wherein at least one of the vehicle operating condition(s) is selected from the group consisting of:

a steering wheel angle, an accelerator pedal position, a clutch pedal position, a gear shifter selection, a vehicle acceleration, a yaw rate, a vehicle speed, an engine speed, an engine torque, or a throttle valve position.

21. An engine control system for use with a vehicle, comprising:

a sensor for providing at least one vehicle operating condition;

a first vehicle subsystem for providing a first set of engine command signals;

a second vehicle subsystem for providing a second set of engine command signals; and

an electronic vehicle module coupled to the sensor, the first vehicle subsystem, and the second vehicle subsystem for receiving the vehicle operating condition, the first set of engine command signals, and the second set of engine command signals, respectively, wherein the electronic vehicle module uses the vehicle operating condition to automatically manage the first and second set of engine command signals so that the vehicle subsystems function together properly.

22. The engine control system of claim 21, wherein:

the first vehicle subsystem is selected from the group consisting of;

a takeoff subsystem, a shifting subsystem, or a cornering subsystem;

the second vehicle subsystem is selected from the group consisting of;

a takeoff subsystem, a shifting subsystem, or a cornering subsystem; and

the electronic vehicle module is a traction control module for a vehicle.