| 摘要 |
<p>A method and system directed to reductant dosing control for an emissions system on a motorized vehicle, is disclosed. Both system and method begin with the storing of reductant on the vehicle. Data about the vehicle and the reductant storage, including a next vehicle service point are stored to system memory. A computer is used to determine a consumption rate of the reductant during vehicle operation, estimate a point for total consumption of the reductant, compare the estimated point of total consumption to the recorded vehicle service point, and then adjust the consumption rate of the stored reductant until the estimated point of total consumption and the recorded vehicle service point approximately coincide. The critical points for service and consumption can be recorded as a function of vehicle operation time or a function of driving distance (e.g., vehicle mileage).</p> |
