METHOD FOR REGENERATING A PARTICLE FILTER DURING THE OPERATION OF AN INTERNAL COMBUSTION ENGINE

• US 20170067384A1
• Filed: 01/27/2015
• Published: 03/09/2017
• Est. Priority Date: 02/25/2014
• Status: Active Grant

• Current Assignee: Rolls-Royce Solutions GmbH (Rolls-Royce Holdings Plc)
• Original Assignee: MTU Friedrichshafen GmbH (Rolls-Royce Holdings Plc)
• Inventors: MLLER, Ralf
• Granted Patent: US 10,221,744 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: F01N 11/007 the diagnostic devices measuring oxygen or air concentration downstream of the exhaust apparatus
• CPC Class Codes: F01N 2590/02 for marine vessels or naval applications
• CPC Class Codes: F01N 2590/08 for heavy duty applications, e.g. trucks, buses, tractors, locomotives
• CPC Class Codes: F01N 2590/10 for stationary applications
• CPC Class Codes: F01N 2900/12 said parameters being related to the vehicle exterior
• CPC Class Codes: F01N 2900/1606 Particle filter loading or soot amount
• CPC Class Codes: F01N 3/023 using means for regenerating the filters, e.g. by burning trapped particles by electrically controlling the supply of combustible mixture or its constituents only F02D41/0235
• CPC Class Codes: F01N 3/025 using fuel burner or by adding fuel to exhaust
• CPC Class Codes: F01N 9/002 of filter regeneration, e.g. detection of clogging
• CPC Class Codes: F02D 2200/701 Information about vehicle position, e.g. from navigation system or GPS signal
• CPC Class Codes: F02D 41/029 the exhaust gas treating apparatus being a particulate filter
• CPC Class Codes: Y02T 10/40 Engine management systems

Abstract

A method for regenerating a particle filter during the operation of an internal combustion engine, having the following steps: detecting at least one loading parameter which is characteristic of a present loading of the particle filter, wherein an active regeneration measure can be carried out recurrently in a manner dependent on the loading parameter; determining a time window for a regeneration of the particle filter; and determining a prediction for an operating state of the internal combustion engine expected within the time window, wherein the active regeneration measure at a time indicated for it by the loading parameter is skipped if the prediction predicts that, within the time window, an operating state of the internal combustion engine will arise in which a regeneration of the particle filter takes place without an active regeneration measure.

Claims

1-13. -13. (canceled)

14. A method for regenerating a particle filter during operation of an internal combustion engine, comprising the steps of:

recording at least one loading parameter that is characteristic of a current loading of the particle filter, wherein an active regeneration measure can be performed recurrently depending on the loading parameter;

determining a time window for a regeneration of the particle filter; and

determining a prediction for an operating state of the internal combustion engine that is to be expected within the time window, wherein

the active regeneration measure is skipped at a point in time indicated by the loading parameter if the prediction predicts an operating state of the internal combustion engine within the time window in which a regeneration of the particle filter will take place without the active regeneration measure.

23. A control unit configured to implement the method according to claim 14.

24. An internal combustion engine, comprising a control unit according to claim 23.

25. The internal combustion engine according to claim 24, wherein the internal combustion engine is configured for driving a motor vehicle or as a static internal combustion engine.

26. A motor vehicle, comprising an internal combustion engine according to claim 24.

27. The motor vehicle according to claim 26, wherein the motor vehicle is an automobile, a commercial vehicle, a dumper truck, a rail vehicle, or a watercraft.