Method and system for enchanced engine control

• US 20020069011A1
• Filed: 12/05/2000
• Published: 06/06/2002
• Est. Priority Date: 12/05/2000
• Status: Active Grant

• Current Assignee: Detroit Diesel Corporation (Daimler Truck Holding AG)
• Original Assignee: Detroit Diesel Corporation (Daimler Truck Holding AG)
• Inventors: McKenzie, Ian D., Hawkins, Jeffery S.
• Granted Patent: US 6,529,815 B2
• Time in Patent Office: Days
• US Class Current: 701/104
• CPC Class Codes: F02B 37/00 Engines characterised by provision of pumps driven at least for part of the time by exhaust
• CPC Class Codes: F02D 2041/228 Warning displays
• CPC Class Codes: F02D 2200/0414 Air temperature
• 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 41/1446 the characteristics being exhaust temperatures
• CPC Class Codes: F02D 41/22 Safety or indicating devices for abnormal conditions in air/fuel ratio feedback systems F02D41/1495, in electric control linkage F02D11/107, in purge control systems F02M25/0809
• CPC Class Codes: Y02T 10/12 Improving ICE efficiencies
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A method for controlling an engine of a system having an air-charger system connected to the engine includes sensing air-charger system temperature; comparing the air-charger system temperature to a temperature threshold; and adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold. A system for controlling engine operation is also provided.

Claims

1. A method for controlling an engine of a system, wherein the system has an air-charger system connected to the engine, the method comprising:

sensing air-charger system temperature;

comparing the air-charger system temperature to a temperature threshold; and

adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold.

2. The method of claim 1 wherein sensing air-charger system temperature includes sensing air-charger compressor outlet temperature.

3. The method of claim 1 wherein sensing air-charger system temperature includes sensing temperature of air-charger system piping.

4. The method of claim 1 wherein adjusting an engine control parameter includes reducing available engine torque.

5. The method of claim 1 wherein adjusting an engine control parameter includes reducing fuel supplied to the engine.

6. The method of claim 1 wherein adjusting an engine control parameter includes advancing timing of a fuel injection to the engine.

7. The method of claim 1 wherein adjusting an engine control parameter includes adjusting air supplied to the engine.

8. The method of claim 1 wherein adjusting an engine control parameter includes adjusting exhaust gas re-circulation rate.

9. The method of claim 1 wherein adjusting an engine control parameter includes reducing engine loading.

10. The method of claim 1 further comprising:

comparing the air-charger system temperature to an additional temperature threshold; and

shutting down the engine when the air-charger system temperature exceeds the additional temperature threshold.

11. A system for controlling engine operation, the system comprising:

an air charger system temperature sensor for sensing air charger system temperature; and

a controller in communication with the air charger system temperature sensor, the controller including control logic for comparing the air-charger system temperature to a temperature threshold, and control logic for adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold.

12. The system of claim 11 further comprising a warning indicator in communication with the controller, the warning indicator being activated when the air-charger system temperature exceeds the temperature threshold.

13. The system of claim 11 wherein the controller further comprises control logic for comparing the air-charger system temperature to an additional temperature threshold, and control logic for generating an engine shutdown signal when the air-charger system temperature exceeds the additional temperature threshold.

15. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for reducing available engine torque.

16. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for reducing fuel supplied to the engine.

17. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for advancing timing of a fuel injection to the engine.

18. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for adjusting air supplied to the engine.

19. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for adjusting exhaust gas re-circulation rate.

20. The computer readable storage medium of claim 14 wherein instructions for adjusting an engine control parameter include instructions for reducing engine loading.

21. The computer readable storage medium of claim 14 further comprising:

instructions for comparing the air-charger system temperature to an additional temperature threshold; and

instructions for shutting down the engine when the air-charger system temperature exceeds the additional temperature threshold.

14. A computer readable storage medium having information stored thereon representing instructions executable by an engine controller in communication with an air charger system temperature sensor and an engine, the computer readable storage medium comprising:

instructions for determining air charger system temperature based on signals provided by the air charger system temperature sensor;

instructions for comparing the air charger system temperature to a temperature threshold; and

instructions for adjusting an engine control parameter when the air-charger system temperature exceeds the temperature threshold.