B - Operations – Transporting – 01 – D
Patent
B - Operations, Transporting
01
D
B01D 53/94 (2006.01) B01D 53/62 (2006.01) F01N 11/00 (2006.01)
Patent
CA 2341065
The invention relates to a process for checking the operatability of an exhaust gas purification catalyst for diesel engines, which has a light-off temperature and a degree of conversion r CO for carbon monoxide (CO), by direct measurement of the carbon monoxide concentration in combination with a temperature measurement. The process is characterized in that to evaluate the remaining catalytic activity of the catalyst the difference .DELTA.T between the current catalyst exit temperature T E of the exhaust gas and the light-off temperature T co,50%,fresh of the fresh catalyst for carbon monoxide stored as a function of speed and load .DELTA.T = T E - T CO, 50%,fresh is determined and the degree of conversion r CO for carbon monoxide is evaluated.
Gieshoff Jurgen
Klein Harald
Kreuzer Thomas
Lox Egbert
Neuhausen Ulrich
Dmc2 Degussa Metals Catalysts Cerdec Ag
Marks & Clerk
Umicore Ag & Co. Kg
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