| 空燃比对LPG发动机排放特性影响的研究 |
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| 引用本文： | 周重光,严兆大,王希珍,苏石川,曹韵华.空燃比对LPG发动机排放特性影响的研究[J].内燃机工程,2002,23(5):23-26. |
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| 作者姓名： | 周重光 严兆大 王希珍 苏石川 曹韵华 |
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| 作者单位： | 浙江大学,能源工程系,杭州,310027 |
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| 摘 要： | 介绍了与叉车配套的柴油机改装成燃用液化石油气（LPG）发动机的台架试验结果，作者针对叉车发动机的常用运行工况，采用宽域空燃比氧传感器（UEGO）的电控单元来控制发动机的空燃比，得到了在中，高转速下的HC，CO，NOx，排气温度同空燃比的关系，试验结果表明空燃比对LPG发动机排放影响极大，为了得到较好的排放性能，需要随工况的变化精确地控制空燃比。
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| 关 键 词： | 空燃比 LPG发动机 排放特性 液化石油气 宽域空燃比氧传感器 叉车 |
| 文章编号： | 1000-0925(2002)05-023-04 |
An Investigation int0 influence 0f Air-Fnel Ratio on Emissions from a LPG Single-Fuel Engine |
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| Zhou Chongguang,Yan Zhaodao,Wan Xizhen,Su Shichuan,Cao Yunhua.An Investigation int0 influence 0f Air-Fnel Ratio on Emissions from a LPG Single-Fuel Engine[J].Chinese Internal Combustion Engine Engineering,2002,23(5):23-26. |
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| Authors: | Zhou Chongguang Yan Zhaodao Wan Xizhen Su Shichuan Cao Yunhua |
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| Abstract: | The test results of an electronically controlled LPG engine, which was refitted from a forklift diesel engine,have been introduced. The electronic control unit with a universal wide range exhaust gas oxygen sensor(UEGO)is used to control the air-fuel ratio,and then in the medium and high speed and load conditions,the relations between the air-fuel ratio and HC,CO,NOX emissions,the temperature of exhaust gas of the LPG engine have been decribed. The test results show that the air-fuel ratio significantly affects the exhaust emission from a LPG engine. In order to obtain better exhaust emission performance, the air-fuel ratio should be controlled accurately according to the change of operation conditions. |
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| Keywords: | I C Engine Electronic Control Air-Fuel Ratio Characteristic of Emissions Liquefied Petroleum Gas(LPG) Universal Wide range Exhaust Gas Oxygen Sensor (UEGO) |
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