Contribution Ratio of Methanol to HC Emission of a Gasohol Fueled Spark Ignition Engine

WANG Wenrui; WANG Kun; WANG Xiaorong; WEI Yanju; LIU Shenghua

doi:10.7652/xjtuxb201403008

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Contribution Ratio of Methanol to HC Emission of a Gasohol Fueled Spark Ignition Engine

更新时间：2025-04-29

- Contribution Ratio of Methanol to HC Emission of a Gasohol Fueled Spark Ignition Engine
- Vol. 48, Issue 3, Pages: 39-43+114(2014)
- 作者机构：
  
  西安交通大学能源与动力工程学院,西安,710049
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb201403008
  CLC： TK462
- Online First：10 March 2014，
  
  Published：2014
- 稿件说明：
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WANG Wenrui, WANG Kun, WANG Xiaorong, et al. Contribution Ratio of Methanol to HC Emission of a Gasohol Fueled Spark Ignition Engine[J]. 2014, 48(3): 39-43+114.
DOI：

WANG Wenrui, WANG Kun, WANG Xiaorong, et al. Contribution Ratio of Methanol to HC Emission of a Gasohol Fueled Spark Ignition Engine[J]. 2014, 48(3): 39-43+114. DOI： 10.7652/xjtuxb201403008.

摘要

在一台JL368Q3型汽油机上

通过考察发动机燃用体积分数分别为10%、20%和85%的甲醇汽油混合燃料时甲醇和碳氢(HC)的排放特性

研究了甲醇和汽油各自的排放率随发动机排气温度的变化规律和甲醇掺混比的影响

以及甲醇对发动机碳氢排放的贡献率。试验结果表明:甲醇掺混比对甲醇排放率的影响不大

在各掺混比下

甲醇排放率均不超过8 g/kg

且随发动机排气温度的升高呈现指数降低的趋势; 汽油的碳氢排放率比甲醇排放率高一个数量级

甲醇体积分数为10%时发动机的碳氢排放率在中高负荷时最低

约为40 g/kg; 在各甲醇掺混比下

汽油均是发动机碳氢排放的主要来源

甲醇对发动机碳氢排放的贡献率不超过8%。

Abstract

The emission rate characteristics of methanol and hydrocarbon(HC)were investigated on a JL368Q3 gasoline engine when fueled with methanol/gasoline blends with the methanol fraction of 10%

20% and 85% in volume

respectively. The effects of exhaust temperature and methanol fraction on the emission rates

and the contribution ratio of methanol on HC emission were then quantitatively studied. Experimental results show that the blending ratio of methanol has little effect on its emission rate

and the rate is less than 8 g/kg for all the fuel blends and it decreases exponentially with the increasing engine speed and exhaust temperature. The emission rate of HC is one grade higher than that of methanol and is higher than 40 g/kg when the engine fueled with the M10 blend. For all the tested fuel blends

gasoline is the main source of HC emission

and methanol contributes less than 8% on HC emission.

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references

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