| 摘要 |
<p>Provided is an exhaust purification control system for an internal combustion engine, wherein the deterioration of the purification efficiency due to problems in integrated value control, i.e., a deviation from a true value, can be eliminated, and the time for resetting can be conserved. An exhaust purification control system (25) for an internal combustion engine is provided with a catalyst (13) which is provided in an exhaust passage (6) of an internal combustion engine (1) and which purifies exhaust gas; a reactant supply device (30) for supplying a reactant (12) necessary for a reaction of the catalyst (13) to the upstream side of the catalyst (13); and a control device (24) for controlling the supply of the reactant from the reactant supply device. The control device (24) executes a step (S2) for calculating a basic reactant supply quantity on the basis of the operation state of an internal combustion engine, a step (S4) for calculating a correction quantity (Nc) for the basic reactant supply quantity on the basis of the operation state of an internal combustion engine, and a step (S5) for calculating a target reactant supply quantity on the basis of the basic reactant supply quantity and the correction quantity.</p> |
