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US 4,902,487 AGranted
Treatment of diesel exhaust gases
AssigneeJohnson Matthey PLC
InventorsBarry J. Cooper, Hyun J. Jung, James E. Thoss
Life of this patent
Estimating the term…
Abstract
In a process wherein diesel exhaust gas is passed through a filter to remove particulate therefrom before discharge and particulate deposited on the filter is combusted, the improvement which comprises combusting the particulate with a gas containing NO.sub.2, which may be catalytically generated in the exhaust system.
Claims9
In a process wherein diesel exhaust gas is passed through a filter to remove particulate therefrom before discharge and particulate deposited on the filter is combusted, the improvement which comprises combusting the particulate with a gas containing NO.sub.2.
Dependencies are inferred from the claim text.