Nitrogen oxide purification system and control method of the same
AssigneesHyundai Motor Company, Kia Motors Corporation
InventorJun Sung PARK
Life of this patent
Estimating the term…
Abstract
A nitrogen oxide purification system includes an exhaust line exhausting exhaust gas from a combustion chamber. A first nitrogen oxide purification device is mounted at an upstream side of the exhaust line to primarily purify nitrogen oxides (NOx) included in the exhaust gas, and a second nitrogen oxide purification device is mounted to a downstream side of the first nitrogen oxide purification device to secondarily purify the NOx. A second injector is disposed between the first nitrogen oxide purification device and the first injector to additionally inject fuel for controlling an air/fuel ratio of the exhaust gas.
Claims6
A control method of a nitrogen oxide purification system for removing NOx, the method comprising:
- determining, by a controller, a nitrogen oxide purification mode of a first nitrogen oxide purification device and a second nitrogen oxide purification device;
- determining, by the controller, a driving condition of an engine;
- and
- completing, by the controller, the nitrogen oxide purification mode.
Dependencies are inferred from the claim text.