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Exhaust purification device and method of calculating NOx mass adsorbed in lean NOx trap of exhaust purification device
Exhaust purification device and method of calculating NOx mass adsorbed in lean NOx trap of exhaust purification device
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机译:排气净化装置和计算在排气净化装置的稀薄NOx捕集器中吸附的NOx质量的方法
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摘要
A method of calculating a nitrogen oxide (NOx) mass adsorbed in a lean NOx trap (LNT) of an exhaust purification device includes calculating a NOx mass flow stored in the LNT, calculating a NOx mass flow thermally released from the LNT, calculating a NOx mass flow released from the LNT at the rich air/fuel ratio, calculating a NOx mass flow chemically reacting with the reductant at the LNT, and integrating a value obtained by subtracting the NOx mass flow thermally released from the LNT, the NOx mass flow released from the LNT at the rich air/fuel ratio, and the NOx mass flow chemically reacting with the reductant at the LNT from the NOx mass flow stored in the LNT.
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