进气湿度对重型天然气发动机影响的试验研究

张腾; 韩文涛; 纪常伟; 田茂军; 王怀宇; 陈龙

doi:10.3969/j.issn.1001-2222.2023.01.006

车用发动机 >

2023 , Vol. 0 >Issue 1: 34 - 38

DOI: https://doi.org/10.3969/j.issn.1001-2222.2023.01.006

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进气湿度对重型天然气发动机影响的试验研究

张腾 ,
韩文涛 ,
纪常伟 ,
田茂军 ,
王怀宇 ,
陈龙

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（1.潍柴动力股份限公司，山东潍坊 261061；2.北京工业大学能源与动力工程学院，北京 100124；3.中国汽车工程研究院股份有限公司，重庆 401122；4.中国第一汽车股份有限公司研发总院，吉林长春 130000）

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Experimental Study on Influence of Intake Humidity on Heavy-Duty Natural Gas Engine

ZHANG Teng ,
HAN Wentao ,
JI Changwei ,
TIAN Maojun ,
WANG Huaiyu ,
CHEN Long

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(1.Weichai Power Co.,Ltd.,Weifang 261061,China;2.College of Energy and Power Engineering,Beijing University of Technology,Beijing 100124,China;3.China Automotive Engineering Research Institute Co.,Ltd.,Chongqing 401122,China;4.China FAW GROUP Co.,Ltd.,R&D Institute,Changchun 130000,China)

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摘要

以满足国六排放标准的重型天然气发动机为研究对象，研究了进气湿度对天然气发动机性能和排放的影响。研究结果表明，进气湿度增加对天然气发动机性能和排放的影响体现在以下几个方面：燃烧恶化，缸内燃烧压力降低，CA50后移；发动机点火角需要提前以保证发动机正常运行；输出扭矩降低，气耗增加；NO_x排放下降，HC和CO排放呈现出上升趋势，但与HC和CO排放相比，对NO_x排放影响较大。

关键词： 天然气发动机; 进气湿度; 性能试验

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张腾 , 韩文涛 , 纪常伟 , 田茂军 , 王怀宇 , 陈龙 . 进气湿度对重型天然气发动机影响的试验研究[J]. 车用发动机, 2023 , 0(1) : 34 -38 . DOI: 10.3969/j.issn.1001-2222.2023.01.006

Abstract

The impact of intake humidity on heavy-duty natural gas engine performance and emission was studied based on the engine that meets China Ⅵ emission standard. The research results show that the intake humidity has a certain influence on the performance and emission of natural gas engine. With the increase of intake humidity, the combustion deteriorates, the in-cylinder combustion pressure decreases, and the CA50 moves backwards. The engine ignition angle needs to be advanced to ensure normal engine operation. The torque output decreases and the gas consumption increases. Besides, HC and CO emissions show an upward trend, but NO_x emission reduces with a large influence.

Key words： natural gas engine; intake humidity; performance test

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