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US8474246B2 — Method of operating a particle filter in the exhaust system of a motor vehicle's internal combustion engine
|F01N3/0232||Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles removing incombustible material from a particle filter, e.g. ash|
|F01N13/009||Exhaust or silencing apparatus characterised by constructional features ; Exhaust or silencing apparatus, or parts thereof, having pertinent characteristics not provided for in, or of interest apart from, groups F01N1/00Â -Â F01N5/00, F01N9/00, F01N11/00 having two or more separate purifying devices arranged in series|
|F01N3/0253||Exhaust or silencing apparatus having means for purifying, rendering innocuous, or otherwise treating exhaust for cooling, or for removing solid constituents of, exhaust by means of filters using means for regenerating the filters, e.g. by burning trapped particles using fuel burner or by adding fuel to exhaust adding fuel to exhaust gases|
|F01N9/002||Electrical control of exhaust gas treating apparatus of filter regeneration, e.g. detection of clogging|
|F02D41/029||Introducing corrections for particular conditions exterior to the engine in relation with the state of the exhaust gas treating apparatus to purge or regenerate the exhaust gas treating apparatus the exhaust gas treating apparatus being a particulate filter|
|F01N2430/085||Influencing exhaust purification, e.g. starting of catalytic reaction, filter regeneration, or the like, by controlling engine operating characteristics by modifying ignition or injection timing at least a part of the injection taking place during expansion or exhaust stroke|
|F01N2550/04||Filtering activity of particulate filters|
|F01N2560/08||Exhaust systems with means for detecting or measuring exhaust gas components or characteristics the means being a pressure sensor|
|F01N2560/14||Exhaust systems with means for detecting or measuring exhaust gas components or characteristics having more than one sensor of one kind|
|F02D2200/0812||Particle filter loading|
Abstracts ( 1 of 1 )
In a method of operating a particle filter in an exhaust system of a motor vehicle internal combustion engine, wherein the particle filter is reconditioned, in intervals, by a soot-burn-off procedure, the amount of noncombustible ashes also collected in the particle filter is reduced by heating the particle filter and supplying to the particle filter, together with the exhaust gas of the internal combustion engine, a reducing agent which reacts with the ash deposits so as to chemically convert the ash deposits such that at least non-metallic ash components are decomposed and carried out of the particle filter by the exhaust gas.