[1]何 旭,徐一凡,王 路,等.柴油温度对燃烧火焰温度和碳烟生成的影响[J].内燃机学报,2021,(02):97-105.
 He Xu,Xu Yifan,et al.Influence of Diesel Temperature on Combustion Flame Temperature and Soot Formation Characteristics[J].,2021,(02):97-105.
点击复制

柴油温度对燃烧火焰温度和碳烟生成的影响
分享到:

《内燃机学报》[ISSN:1006-6977/CN:61-1281/TN]

卷:
期数:
2021年02
页码:
97-105
栏目:
出版日期:
2021-03-25

文章信息/Info

Title:
Influence of Diesel Temperature on Combustion Flame Temperature and Soot Formation Characteristics
作者:
何 旭徐一凡王 路徐雨轩周 扬刘福水
(1. 北京理工大学 机械与车辆学院,北京 100081;2. 北京电动汽车协同创新中心,北京 100081)
Author(s):
He Xu1 2Xu Yifan1Wang Lu1Xu Yuxuan1Zhou Yang1Liu Fushui1 2
1. School of Mechanical Engineering,Beijing Institute of Technology,Beijing 100081,China;2. Collaborative Innovation Center of Electric Vehicles in Beijing,Beijing 100081,China)
关键词:
柴油机定容燃烧弹冷起动双色法火焰温度KL因子
Keywords:
diesel engineconstant volume combustion vesselcold starttwo-colorflame temperatureKL factor
分类号:
TK421.2
文献标志码:
A
摘要:
在定容燃烧弹中,采用双色法研究不同柴油温度对冷起动过程中的燃烧火焰温度和碳烟生成特性的影响,获取缸内燃烧火焰温度分布和表征碳烟分布的KL因子.结果表明:在喷油后3.5~6.0ms的燃烧稳定时期,柴油温度为40℃的火焰中大于2200K的区域约占60%,柴油温度为20℃的火焰中大于2200K的区域约占55%,柴油温度为0℃的火焰中大于2200K的区域约占40%.随着柴油温度的降低,柴油蒸发吸热量增加,局部范围内温度下降,使火焰高温区面积减小,火焰温度总体降低.在燃烧稳定时期,柴油温度为40、20和0℃时,KL因子大于0.9的碳烟较多的区域占60%、50%和40%.随着柴油温度降低,着火滞燃期增加,油、气混合的时间增长,局部空燃比更大,导致KL因子随着柴油温度的降低而减小.
Abstract:
In the constant volume combustion vessel,two-color technique was used to study the effects of different diesel temperatures on the combustion temperature and soot formation characteristics during cold start. The combustion temperature and the KL factor characterizing the soot volume fraction distribution were obtained. The results show that at the combustion stability period of 3.5ms—6.0ms after injection,40℃ diesel temperature gives 60% flame area where the temperature is more than 2200K in the total flame area,while 20℃ diesel temperature and 0℃ diesel temperature gives 55% and 40% respectively. As the temperature of the diesel decreases,the heat absorption of the diesel fuel increases,and the temperature in the local range decreases,so that the area of the high temperature region of the combustion reduces and the flame temperature is generally reduced. During the combustion stability period,when the disel temperature is 40℃,20℃ and 0℃,the area with more soot with a KL factor of greater than 0.9 accounts for 60%,50% and 40%,respectively. As the diesel temperature decreases,the ignition delay increases,the oil-gas mixing time increases and the local air-fuel ratio is lager. Therefore,the KL factor decreases as the diesel temperature decreases.

相似文献/References:

[1]陈 鬃,梅德清,赵 翔,等.碳烟催化氧化最优升温速率与颗粒质量分数的试验[J].内燃机学报,2015,(04):349.
[2]鹿盈盈,苏万华,裴毅强.喷射参数对柴油机预混燃烧和排放的影响[J].内燃机学报,2016,(01):9.
 LU Ying-ying,SU Wan-hua,PEI Yi-qiang.Effect of Injection Parameters on PCCI Combustion and Emissions in a Diesel Engine[J].,2016,(02):9.
[3]马小康,张付军,韩 恺,等.柴油、正丁醇及其混合燃料单液滴蒸发特性试验[J].内燃机学报,2016,(01):48.
 MA Xiao-kang,ZHANG Fu-jun,HAN Kai,et al.Experiment on Evaporation Characteristics of Diesel,n-Butanol and Their Blends Droplets[J].,2016,(02):48.
[4]徐 辉,蔡忆昔,施蕴曦,等.O3/N2气氛下离线再生DPF的影响因素[J].内燃机学报,2016,(01):81.
 XU Hui,CAI Yi-xi,LI Xiao-hua,et al.Influencing Factors of DPF Off-Online Regeneration Under O3/N2 Atmosphere[J].,2016,(02):81.
[5]钟汶君,何志霞,王 谦,等.不同燃油温度喷嘴内部流动可视化试验[J].内燃机学报,2015,(03):238.
[6]李长江,赵长禄,韩 恺,等.柴油机高原喷油策略遗传算法优化及罚参数研究[J].内燃机学报,2015,(03):250.
[7]王天田,颜伏伍,胡 杰,等.利用NOx传感器的NH3交叉敏感实现SCR 系统闭环控制[J].内燃机学报,2015,(02):178.
 WANG Tian-tian,YAN Fu-wu,HU Jie,et al.Feedback Control of SCR System by Cross-Sensitivity of NOx Sensor to NH3[J].,2015,(02):178.
[8]马志豪,钞 莹,李 磊,等.柴油机颗粒在氧化过程中拉曼光谱参数的变化[J].内燃机学报,2015,(01):44.
 MA Zhi-hao,CHAO Ying,LI Lei,et al.Changes in Raman Spectra of Particulates Emitted from Diesel Engine During Oxidation[J].,2015,(02):44.
[9]唐 蛟,李国祥,王志坚,等.DPF碳载量模型的建立及试验[J].内燃机学报,2015,(01):51.
 TANG Jiao,LI Guo-xiang,WANG Zhi-jian,et al.Construction and Experiment of DPF Soot Loading Model[J].,2015,(02):51.
[10]刘二喜,战 强,邬斌扬,等.进气门晚关与两次喷射协同作用对柴油机 中转速中等负荷的影响[J].内燃机学报,2014,(06):481.
 LIU Er-xi,ZHAN Qiang,WU Bin-yang,et al.Effect of Late Intake Valve Closing and Split Fuel Injection on Thermal Efficiency and Emissions of a Heavy Duty Diesel Engine at Middle Loads and Middle Speeds[J].,2014,(02):481.
[11]贺鹏飞,李 铁,姜 浩,等.柴油喷雾火焰中碳烟颗粒形貌及纳观结构特性[J].内燃机学报,2019,(03):251.
 He Pengfei,Li Tie,Jiang Hao,et al.Effect of Oxygen Concentration on Soot Morphology[J].,2019,(02):251.
[12]黄 胜,郑高翔,黄荣华,等.海拔对柴油喷雾附壁燃烧过程的影响[J].内燃机学报,2019,(06):522.
 Huang Sheng,Zheng Gaoxiang,Huang Ronghua,et al.Influence of Altitude on Diesel Oil Spray Impingement and Attaching Wall Combustion[J].,2019,(02):522.
[13]王成官,楼狄明,谭丕强.基于变海拔柴油撞壁喷雾着火特性可视化研究[J].内燃机学报,2020,(01):10.
 Wang Chengguan,Lou Diming,Tan Piqiang.Visualization on Ignition Characteristic of Wall-Impinging Diesel Spray at Different Altitudes[J].,2020,(02):10.

更新日期/Last Update: 2021-03-25