About 31 results
https://drivepatents.com/patents/1081257 · 29 Dec 2004
An exhaust gas for decision is generated, when the operating condition of the engine is within a deterioration decision zone and is of stationary operation. The direct reduction type nitrous oxide (NOx) catalyst is judged as deteriorated, when the concentr...
https://drivepatents.com/patents/1081525 · 22 Dec 2004
A method for estimating the sulfur content in the fuel of an internal combustion engine (1) equipped with a catalyser (11); the method providing the use of a current sulfur concentration value (Sold) and the correction of said current sulfur concentration ...
https://drivepatents.com/patents/1084610 · 25 Aug 2004
This is a method for regenerating the NOx catalyst in a NOx purifying system provided in the exhaust passage with a direct reduction type NOx catalyst which directly decomposes the NOx during lean-condition operation and is regenerated at rich-condition op...
https://drivepatents.com/patents/1085001 · 11 Aug 2004
An exhaust gas purifying system (1) having a continuous regeneration DPF (3) installed in the exhaust passage (2) of a diesel engine (E) provided with a glow plug (16) and a regeneration control means (5) for regenerating the continuous regeneration DPF (3...
https://drivepatents.com/patents/1086526 · 16 Jun 2004
An oxidation-type catalytic converter (25) operates during brief regeneration phases at an increased exhaust gas temperature between 500degrees Celsius and 800degrees Celsius. During regeneration phases, exhaust gas temperature is raised compared to normal...
https://drivepatents.com/patents/1086391 · 16 Jun 2004
In an exhaust emission control apparatus having an NOx catalyst (9) disposed in an exhaust passage (8) of an internal combustion engine, the present invention is intended to suppress deterioration in exhaust emissions when the temperature of the NOx cataly...
https://drivepatents.com/patents/1087576 · 6 May 2004
Exhaust gas temperature (1) is measured. In lean running, this provides an indication of storage catalyst loading. Preferred features: One or more further operational parameters are used in forming the indication of storage catalyst loading. These include ...
https://drivepatents.com/patents/1087945 · 21 Apr 2004
An air-fuel ratio controller, based on the emission air-fuel ratio of exhaust emission flowing into an exhaust emission control catalyst (19) in the exhaust emission passage (7) of an engine (1), the exhausted amount of at least one specific component cont...
https://drivepatents.com/patents/1088493 · 31 Mar 2004
An exhaust gas purifying system for an internal combustion engine, has an exhaust gas purifying catalyst disposed in an exhaust gas passage of the engine to remove an exhaust gas component; a concentration sensor disposed in the exhaust gas passage downstr...
https://drivepatents.com/patents/1090502 · 14 Jan 2004
An exhaust gas purifying apparatus applied to an automotive engine (10) that performs lean combustion is installed in a vehicle, to purify exhaust gas with a NOx storage reduction catalytic converter (22) located in an exhaust passage (18) of the engine. D...