FILTERS TRAPPING PARTICULATE MATTER

Brand	Owner	Address	Description
TWF	JOHNSON MATTHEY PLC	5th Floor 25 Farringdon Street London EC4A4AB United Kingdom	Filters for trapping particulate matter emitted from vehicular internal combustion engines; catalysed filters for trapping particulate matter emitted from vehicular internal combustion engines; filters for trapping particulate matter emitted from vehicular gasoline internal combustion engines; catalysed filters for trapping particulate matter emitted from vehicular gasoline internal combustion engines; parts and fittings therefor;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

An exhaust gas cleaning system is provided that comprises a particulate filter and an NOx trapping catalytic converter disposed upstream of the particulate filter. The exhaust gas cleaning system is configured to determine a combustion amount of the particulate matter accumulated in the particulate filter that are combusted by the NOx in the exhaust gas, and adjust the combustion amount of the particulate matter based on an NOx adsorption condition of the NOx trapping catalytic converter. Then, the exhaust gas cleaning system is configured to estimate a particulate matter accumulation amount in the particulate filter by subtracting the adjusted combustion amount of the particulate matter from a discharge amount of the particulate matter. Thus, the amount of particulate matter accumulated in the particulate filter is estimated more accurately by taking into consideration the combustion of particulate matter by NOx in the exhaust gas.