About 41 results
https://drivepatents.com/patents/945519 · 23 Mar 2016
A reducing agent supplying device includes reaction container (20), ozone generator (30), air pump (30p), ozone-containing air pipe (26), compressed air pipe (25), switching device (25v, 26v), and switching controller (41 a). The reaction container defines...
https://drivepatents.com/patents/946479 · 20 Jan 2016
It is proposed an ammonia precursor generating system comprising: a storage compartment (110) storing at least ammonia precursor granules; a dissolving compartment (120) adapted for storing an ammonia precursor solution, and for dissolving ammonia precurso...
https://drivepatents.com/patents/947663 · 16 Dec 2015
In an engine, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged in the engine exhaust passage. A first NO x purification method which injects hydrocarbons from the hydrocarbon feed valve (15) by a predetermined period to ...
https://drivepatents.com/patents/958346 · 19 Aug 2015
An exhaust gas G of an internal combustion engine 11 is made to pass through an exhaust gas purification device 20 after passing through a pre-oxidation catalyst 25, and when a first temperature T1 of the exhaust gas G on an upstream side of the exhaust ga...
https://drivepatents.com/patents/958655 · 5 Aug 2015
In an internal combustion engine, an exhaust purification catalyst (13), particulate filter (14), and hydrocarbon feed valve (15) are arranged in an engine exhaust passage. A low pressure exhaust gas recirculation system (LPL) is provided for making the ex...
https://drivepatents.com/patents/950892 · 20 May 2015
In an internal combustion engine, a hydrocarbon feed valve (15) and an exhaust purification catalyst (13) are arranged in an engine exhaust passage. As rich control for making the air-fuel ratio of the exhaust gas which flows into the exhaust purification ...
https://drivepatents.com/patents/961106 · 6 May 2015
A decrease in the NOx removal or reduction rate is suppressed, while suppressing the outflow of particulate matter from a filter after regeneration of the filter. To this end, in an exhaust passage of an internal combustion engine, there are provided a fil...
https://drivepatents.com/patents/952627 · 14 Jan 2015
A decrease in an NOx removal or reduction rate at the time of filter regeneration is suppressed. To this end, provision is made for an NOx selective reduction catalyst, a filter arranged at the upstream side of the NOx selective reduction catalyst, an NH 3...
https://drivepatents.com/patents/975223 · 7 May 2014
In an engine, an exhaust purification catalyst (13) and a hydrocarbon feed valve (15) are arranged in an engine exhaust passage, and, a low pressure exhaust gas recirculation system (LPL) which makes exhaust gas downstream of the exhaust purification catal...
https://drivepatents.com/patents/979434 · 22 Jan 2014
In an internal combustion engine, inside of an engine exhaust passage, a hydrocarbon feed valve (16), an exhaust purification catalyst (13), a particulate filter (14), and an NO 2 reduction catalyst (15) are arranged. At the time of engine operation, the a...