Patent application number | Description | Published |
20080223020 | Internal Combustion Engine - An engine exhaust passage has an SO | 09-18-2008 |
20080314025 | Device for Purifying Exhaust Gas of an Internal Combustion Engine - A device for purifying exhaust gas of an internal combustion engine comprising a NOx catalyst device, fuel feeding means for feeding additional fuel into combusted gas flowing into the NOx catalyst device during the regeneration treatment, and a NOx concentration sensor arranged on the exhaust downstream of the NOx catalyst device, wherein when the NOx concentration detected by the NOx concentration sensor is lower than a preset concentration during the regeneration treatment of this time, the amount of NOx absorbed by the NOx catalyst device during a preset period until the regeneration treatment of the next time is estimated by utilizing the NOx concentration sensor, and when the absorbed amount of NOx is smaller than a preset amount, it is decided that the amount of additional fuel fed during the regeneration processing of this time had been abnormally decreased. | 12-25-2008 |
20090241638 | DEVICE FOR DETECTION OF SULFUR CONCENTRATION IN FUEL OR OIL - A metal compound ( | 10-01-2009 |
20100089039 | EXHAUST PURIFICATION DEVICE OF INTERNAL COMBUSTION ENGINE - In an internal combustion engine, an NO | 04-15-2010 |
20100257847 | EXHAUST PURIFICATION SYSTEM OF INTERNAL COMBUSTION ENGINE - In the present exhaust purification system of an internal combustion engine, a particulate filter is arranged downstream of an NOx storage/reduction catalyst device and an S trap device is arranged upstream of the NOx storage/reduction catalyst device. A first fuel supplying means for supplying additional fuel for regeneration of the particulate filter to the exhaust system upstream of the S trap device or into the cylinder is provided. An amount of the additional fuel supplied by the first fuel supplying means is controlled to make the S trap device not release SOx. A second fuel supplying means is provided in the exhaust system between the NOx storage/reduction catalyst device and the particulate filter to make up for a deficiency of the additional fuel supplied by the first fuel supplying means in the regeneration treatment of the particulate filter. | 10-14-2010 |
20100287914 | EXHAUST PURIFYING DEVICE OF INTERNAL COMBUSTION ENGINE - An internal combustion engine in an engine exhaust passage of which an NO | 11-18-2010 |