| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide an LNT control method for a vehicle that makes it possible to increase the purification rate of NOx.SOLUTION: In accordance with the temperature of a LNT, the purification efficiency of the LNT can be increased by reducing the amount of slip of NOx and allowing sufficient reduction, by performing a rich performing step S50 with the carrier temperature of the LNT increased by performing a free-rich step S30 and a rich mode separation step S40 when below the reference temperature.</p> |
