METHOD FOR OPERATING AN INTERNAL COMBUSTION ENGINE

• US 20150101314A1
• Filed: 12/17/2014
• Published: 04/16/2015
• Est. Priority Date: 09/17/2012
• Status: Active Grant

• Current Assignee: Rolls-Royce Solutions GmbH (Rolls-Royce Holdings Plc)
• Original Assignee: MTU Friedrichshafen GmbH (Rolls-Royce Holdings Plc)
• Inventors: Spder, Tim
• Granted Patent: US 9,574,508 B2
• Time in Patent Office: Days
• US Class Current: 60/274
• CPC Class Codes: F01N 9/00 Electrical control of exhaust gas treating apparatus monitoring or diagnostic devices for exhaust-gas treatment apparatus F01N11/00; conjoint electrical control of two or more combustion engine functions F02D43/00
• CPC Class Codes: F01N 9/002 of filter regeneration, e.g. detection of clogging
• CPC Class Codes: F02D 2041/286 comprising means for signal processing
• CPC Class Codes: F02D 2200/0812 Particle filter loading
• CPC Class Codes: F02D 35/0007 using electrical feedback F02D35/0015 takes precedence
• CPC Class Codes: F02D 41/0052 Feedback control of engine parameters, e.g. for control of air/fuel ratio or intake air amount
• CPC Class Codes: F02D 41/024 to increase temperature of the exhaust gas treating apparatus
• CPC Class Codes: F02D 41/027 to purge or regenerate the exhaust gas treating apparatus
• CPC Class Codes: F02D 41/029 the exhaust gas treating apparatus being a particulate filter
• CPC Class Codes: F02D 41/1445 the characteristics being related to the exhaust flow
• CPC Class Codes: F02D 41/1446 the characteristics being exhaust temperatures
• CPC Class Codes: F02D 41/2451 characterised by what is learned or calibrated

Abstract

The invention relates to a method and an arrangement for operating an internal combustion engine. In the method a first distribution of values for at least one variable is used, the variable describing a physical property of the internal combustion engine, and over a second time period values for this variable are recorded and classified, such that a second distribution is determined. The first distribution is then compared with the second distribution such that the behavior of the internal combustion engine can be adapted on the basis thereof.

Claims

1. A method of operating an internal combustion engine, comprising the steps of:

using a first distribution of values for at least one variable;

recording and classifying values for the at least one variable over a second time period;

determining a second distribution; and

comparing the first distribution with the second distribution.

2. The method according to claim 1, wherein the first distribution is determined by recording of values of the at least one variable over a first time period.

3. The method according to claim 2, wherein the first time period is longer than the second time period.

4. The method according to claim 3, wherein the first distribution is predetermined in one classification.

5. The method according to claim 1, whereby in the second distribution the at least one variable is classified dependent on at least one second variable.

6. The method according to claim 1, wherein an event is triggered on the basis of the comparing step.

7. The method according to claim 1, wherein the at least one variable includes an exhaust gas temperature.

8. The method according to claim 1, wherein the comparing step includes comparing a threshold.

9. The method according to clam 1, wherein the internal combustion engine includes an exhaust gas treatment system, and the method is carried out in association with the exhaust gas treatment system.

10. A method of controlling an exhaust gas recirculation system in an internal combustion engine, comprising the steps of:

using a first distribution of values for at least one variable;

recording and classifying values for the at least one variable over a second time period;

determining a second distribution; and

comparing the first distribution with the second distribution.

11. An arrangement for operating an internal combustion engine, comprising:

a controller which is structured and arranged to operate the internal combustion engine, based on a method of;

using a first distribution of values for at least one variable;

recording and classifying values for the at least one variable over a second time period;

determining a second distribution; and

comparing the first distribution with the second distribution.

12. The arrangement according to claim 11, wherein the first distribution is determined by recording of values of the at least one variable over a first time period.

13. The arrangement according to claim 12, wherein the first time period is longer than the second time period.

14. The arrangement according to claim 13, wherein the first distribution is predetermined in one classification.

15. The arrangement according to claim 11, whereby in the second distribution the at least one variable is classified dependent on at least one second variable.

16. The arrangement according to claim 11, wherein an event is triggered on the basis of the comparing step.

17. The arrangement according to claim 11, wherein the at least one variable includes an exhaust gas temperature.

18. The arrangement according to claim 11, wherein the comparing step includes comparing a threshold.

19. The arrangement according to clam 11, wherein the internal combustion engine includes an exhaust gas treatment system, and the controller carries out the method in association with the exhaust gas treatment system.