Power plants – Internal combustion engine with treatment or handling of... – Methods
Patent
1990-10-31
1991-06-18
Hart, Douglas
Power plants
Internal combustion engine with treatment or handling of...
Methods
60286, 60288, 60311, G01N 302
Patent
active
050240544
ABSTRACT:
In a diesel engine exhaust system a plurality of valved ceramic filters are connected in parallel in the exhaust stream and loaded sequentially. While one filter is preferentially loaded, a second filter is opened to the exhaust stream when backpressure reaches a predetermined value. The secondary filter is removed from the exhaust stream when air flow to the engine drops a discrete amount below a peak air flow determined by the backpressure which would cause the secondary filter to be placed in the exhaust stream. The preferentially loaded filter is bypassed when completely loaded and regenerated. The secondary filter is then preferentially loaded and the sequence continues.
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Donaldson Drawing No. 5215B94.
Barris Marty A.
Wagner Wayne M.
Donaldson & Company, Inc.
Hart Douglas
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