| 氧传感器中值电压修正对TWC匹配的影响 |
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| 引用本文： | 董团结,王建昕,庄人隽,黄刚,张黎军,梅亚峰.氧传感器中值电压修正对TWC匹配的影响[J].车用发动机,2001(2):25-27. |
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| 作者姓名： | 董团结 王建昕 庄人隽 黄刚 张黎军 梅亚峰 |
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| 作者单位： | 1. 清华大学汽车安全与节能国家重点实验室,
2. 东风汽车公司发动机厂, |
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| 基金项目： | 北京市科学技术委员会资助项目 !(95 40 62 40 0 ) |
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| 摘 要： | 对随着发动机负荷的升高 ,排气中NOx 浓度增大 ,氧传感器的中值电压会发生偏移 ,导致高负荷空燃比(α)偏稀的现象进行了试验研究和讨论。试验结果表明 ,对氧传感器的中值电压进行修正 ,可明显减少NOx 的排放
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| 关 键 词： | 电控汽油机 三效催化转化器(TWC) 氧传感器(EGO) |
| 文章编号： | 1001－2222(2001)02－0025－03 |
| 修稿时间： | 2000年2月29日 |
Effect of the Correction of EGO Set-point Voltage on the Match of TWC |
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| DONG Tuan-jie,WANG Jian-xin,ZHUANG Ren-jun,HUANG Gang,ZHANG Li-jun,MEI Ya-feng.Effect of the Correction of EGO Set-point Voltage on the Match of TWC[J].Vehicle Engine,2001(2):25-27. |
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| Authors: | DONG Tuan-jie WANG Jian-xin ZHUANG Ren-jun HUANG Gang ZHANG Li-jun MEI Ya-feng |
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| Abstract: | The A/F control is an important work of the match of TWC and EFI gasoline engine.However,when the engine load increases, the concentration of the NOx in the exhaust will also increase，thus causing the set-point voltage becomes high, and eventually making the A/f lean. In order to find out the effect of the correction of the set-point voltage on the emission of the NOx, experimental investigations have been done on an engine test bench. The results show that the A/F becomes lean when the load is high. It is an effective way to reduce the NOx emission by correcting the EGO set-point voltages. |
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| Keywords: | EFI engine TWC EGO |
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