Pedal position and/or pedal change rate for use in control of an engine

• US 20060137335A1
• Filed: 12/29/2004
• Published: 06/29/2006
• Est. Priority Date: 12/29/2004
• Status: Active Grant

• Current Assignee: Garrett Transportation I Inc. (Garrett Motion, Inc.)
• Original Assignee: Honeywell International Inc.
• Inventors: Borrelli, Francesco, Stewart, Gregory E., Shahed, Syed M., Hampson, Gregory J.
• Granted Patent: US 7,467,614 B2
• Time in Patent Office: Days
• US Class Current: 60/370
• CPC Class Codes: F02B 37/24 by using pumps or turbines with adjustable guide vanes
• CPC Class Codes: F02D 2200/602 Pedal position
• CPC Class Codes: F02D 41/0007 for control of turbo-charged or super-charged engines control of the pumps per se F02B37/12
• CPC Class Codes: F02D 41/005 according to engine operating conditions
• CPC Class Codes: F02D 41/1401 characterised by the control or regulation method F02D41/1473, F02D41/1477 take precedence
• CPC Class Codes: F02D 41/182 for the control of a fuel injection device
• CPC Class Codes: F02D 41/266 the computer being backed-up or assisted by another circuit, e.g. analogue
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

Systems and methods for using pedal position and/or pedal change rate in the fuel side and/or air side control of an engine. By knowing the pedal position and/or pedal rate, an engine controller may anticipate future fuel and/or air needs of the engine, and adjust the fuel profile and/or air profile to meet those anticipated needs. This may help improve the responsiveness, performance and emissions of the engine.

Claims

1. A method for controlling an internal combustion engine, the engine having a fueling profile that defines the fuel that is provided to the engine, and an air charge profile that defines the air that is provided to the engine, the fueling profile being at least partially controlled by a pedal position, the method comprising the steps of:

identifying a pedal change rate of the pedal position; and

controlling the air profile based, at least in part, on the pedal change rate.

2. The method of claim 1 further comprising the steps of identifying the pedal position, and controlling the air profile based, at least in part, on the pedal position.

3. A method according to claim 1 further comprising:

controlling the fueling profile based, at least in part, on the pedal change rate.

4. The method of claim 3 further comprising the step of identifying the pedal position, and controlling the fueling profile based, at least in part, on the pedal position.

5. The method of claim 1 further comprising the step of identifying the pedal position, and controlling the fueling profile based, at least in part, on the pedal position.

6. The method of claim 1 wherein the engine includes a turbo charger for providing a turbo boost to the air that is provided to the engine, wherein the air profile includes the turbo boost.

7. The method of claim 6 wherein the controlling step includes controlling the turbo boost based, at least in part, on the pedal change rate.

8. The method of claim 1 wherein the engine includes an exhaust recirculation valve for providing a selected amount of exhaust recirculation to the air that is provided to the engine, wherein the air profile includes the amount of exhaust recirculation.

9. The method of claim 8 wherein the controlling step includes controlling the amount of exhaust recirculation based, at least in part, on the pedal change rate.

10. The method of claim 7 wherein the engine includes an exhaust recirculation valve for providing a selected amount of exhaust recirculation to the air that is provided to the engine, wherein the air profile includes the amount of exhaust recirculation.

11. The method of claim 10 wherein the controlling step includes controlling the amount of exhaust recirculation based, at least in part, on the pedal change rate.

12. The method of claim 1 wherein the controlling step uses a current pedal change rate.

13. The method of claim 1 wherein the controlling step uses one or more past pedal change rates.

14. The method of claim 1 wherein the controlling step uses one or more Proportional-Integral-Derivative (PID) control loops.

15. The method of claim 1 wherein the controlling step uses one or more predictive constrained control loops.

16. The method of claim 15 wherein at least one of the predictive constrained control loops includes a Smith predictor.

17. The method of claim 1 wherein the controlling step uses one or more multiparametric control loops.

18. The method of claim 1 wherein the controlling step uses one or more model based predictive control loops.

19. The method of claim 1 wherein the controlling step uses one or more dynamic matrix control loops.

20. The method of claim 1 wherein the controlling step uses one or more statistical processes control loop.

21. The method of claim 1 wherein the controlling step uses a knowledge based expert system.

22. The method of claim 1 wherein the controlling step uses a neural network.

23. The method of claim 1 wherein the controlling step uses fuzzy logic.

24-26. -26. (canceled)

27. A method for controlling a diesel engine that includes a turbocharger, the diesel engine having a fueling profile defining the fuel that is provided to the diesel engine and a turbo boost profile at least in part defining the air that is provided to the diesel engine, the diesel engine having a pedal position, the method comprising the steps of:

identifying a pedal change rate of the pedal position; and

controlling the turbo boost profile based, at least in part, on the pedal change rate.

28. The method of claim 27 further comprising the steps of identifying the pedal position, and controlling the turbo boost profile based, at least in part, on the pedal position.

29. A method according to claim 27 further comprising:

controlling the fueling profile based, at least in part, on the pedal change rate.

30. The method of claim 29 further comprising the step of identifying the pedal position, and controlling the fueling profile based, at least in part, on the pedal position.

31. The method of claim 27 further comprising the steps of identifying the pedal position, and controlling the fueling profile based, at least in part, on the pedal position.

32. The method of claim 29 wherein the fueling profile includes a fueling rate, and the controlling step provides a larger fueling rate for a given pedal position when the pedal change rate is higher than when the pedal change rate is smaller.

33. The method of claim 32 wherein the turbo boost profile includes a turbo boost rate, and the controlling step provides a larger turbo boost rate for a given pedal position when the pedal change rate is higher than when the pedal change rate is smaller.

34. The method of claim 27 wherein the diesel engine has an engine speed, and wherein the fueling profile and the turbo boost profile are controlled, at least in part, based on the engine speed.

35. The method of claim 27 wherein the diesel engine has an air-fuel ratio (AFR), and wherein the fueling profile and the turbo boost profile are controlled based on a target air-fuel ratio (AFR).

70. A method according to claim 29 wherein the one or more engine parameters include an air profile that defines the air that is provided to the engine.

71. A method according to claim 29 wherein the one or more engine parameters include a fuel profile that defines the fuel that is provided to the engine.

72. A method according to claim 29 wherein the one or more engine parameters include a turbo boost profile that defines the turbo boost that is provided to the engine.

73. A method according to claim 29 wherein the one or more engine parameters include an exhaust gas recirculation parameter that defines the amount of exhaust gas recirculation that is provided to an intake air of the engine.

36. A method for controlling a diesel engine that includes a turbocharger, the diesel engine having a fueling profile defining the fuel that is provided to the diesel engine and a turbo boost profile defining the air that is provided to the diesel engine, the diesel engine having a pedal position, the method comprising the steps of:

identifying a pedal change rate of the pedal position; and

controlling the fueling profile based, at least in part, on the pedal change rate.

37. The method of claim 36 further comprising the steps of identifying the pedal position, and controlling the fueling profile based, at least in part, on the pedal position.

38. The method of claim 36 wherein the controlling step uses a current pedal change rate.

39. The method of claim 36 wherein the controlling step uses one or more past pedal change rates.

40. The method of claim 39 wherein the controlling step uses one or more multi-parametric control loops.

41. The method of claim 39 wherein the controlling step includes a first dynamic filter followed by a lookup table followed by a second dynamic filter.

42. The method of claim 41 wherein the first dynamic filter is a Kalman filter or extended Kalman filter.

43. The method of claim 42 wherein the second dynamic filter is an identify filter.

44. The method of claim 41 wherein the look up table is computed using a multi-parametric hybrid algorithm.

45. The method of claim 41 wherein the lookup table encodes one or more constraints on one or more engine emission parameters.

46. The method of claim 45 wherein the look up table generates one or more control signals for the engine that keeps the emissions of the engine within the assigned constraints.

47. The method of claim 46 wherein the lookup table accepts one or more emission control constraints as inputs.

48. The method of claim 47 wherein the one or more emission control constraints are time-varying.

49. The method of claim 36 wherein the controlling step uses one or more Proportional-Integral-Derivative (PID) control loops.

50. The method of claim 36 wherein the controlling step uses one or more predictive constrained control loops.

51. The method of claim 50 wherein at least one of the predictive constrained control loops includes a Smith predictor.

52. The method of claim 36 wherein the controlling step uses one or more multivariable control loops.

53. The method of claim 36 wherein the controlling step uses one or more model based predictive control loops.

54. The method of claim 36 wherein the controlling step uses one or more dynamic matrix control loops.

55. The method of claim 36 wherein the controlling step uses one or more statistical processes control loop.

56. The method of claim 36 wherein the controlling step uses a knowledge based expert system.

57. The method of claim 36 wherein the controlling step uses a neural network.

58. The method of claim 36 wherein the controlling step uses fuzzy logic.

59. A method for controlling an internal combustion engine, the engine having an exhaust recirculation valve for providing a selected amount of exhaust gas to the intake air of the engine, the engine having a pedal position, the method comprising the steps of:

identifying a pedal change rate of the pedal position; and

controlling the amount of exhaust gas recirculation that is provided to the intake air of the engine based, at least in part, on the pedal change rate.

60. The method of claim 59 wherein the controlling step includes controlling the amount of exhaust recirculation based, at least in part, on the pedal position.

61-68. -68. (canceled)

69. A method for controlling an internal combustion engine, the engine having one or more controllable engine parameters that affect the performance of the engine, the method comprising the steps of:

identifying a pedal change rate of a pedal position; and

controlling one or more of the engine parameters based, at least in part, on the pedal change rate.