Experimental Study of Low Temperature Diesel Combustion Sensitivity to Engine Operating Parameters
Experimental Study of Low Temperature Diesel Combustion Sensitivity to Engine Operating Parameters
复制标题
低温柴油燃烧对发动机运行参数敏感性的实验研究
DOI：
10.1115/1.4006377
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发表时间：
2012
期刊：
影响因子：
--
通讯作者：
McTaggart-Cowan G
中科院分区：
文献类型：
--
作者：
McTaggart-Cowan G
阐明了哪些发动机运行参数对低温柴油机燃烧和排放的影响最大。采用分数阶乘和田口正交试验设计，在中低速和负载条件下对关键参数进行了选择和评价。所研究的变化是：废气再循环率、喷油量和发动机转速分别约为 ± 5%，进气温度约为 ± 10 °C。半分数阶乘分析结果表明，对于特定的载荷/速度点，这些参数之间的交互作用可以忽略不计。田口正交法可以作为一种有效的能效分析工具，用于研究柴油机在LTC模式下运行时可能遇到的多参数“小尺度瞬变”。LTC对废气再循环率的变化最为敏感，废气再循环率从60%增加到63%，THC和CO排放增加一倍，燃烧稳定性降低。LTC对喷油量也很敏感，喷油质量的增加降低了整体氧/燃料比，从而增加了THC和CO的排放。这两个参数影响进气充量中的氧浓度，被认为是LTC燃烧和排放的决定性参数。进气温度对滞留在气缸内的总充气量有影响，在低速中负荷条件下对CO排放影响较大。发动机转速的变化对LTC燃烧过程和排放的影响可以忽略不计。
This work elucidated which engine operating parameters have the greatest influence on Low temperature diesel combustion (LTC) and emissions. Key parameters were selected and evaluated at low and intermediate speed and load conditions using fractional factorial and Taguchi orthogonal experimental designs. The variations investigated were: about ± 5% in EGR rate, fuel injection quantity and engine speed respectively; and ± 10 °C in intake charge temperature. The half-fractional factorial results showed that the interactions among these parameters were negligible for a specific load/speed point. The Taguchi orthogonal method could be used as an efficient DoE tool for studying the multi-parameter ‘small-scale transients’ that a diesel engine would be likely to encounter when operating in LTC modes. LTC showed the most significant sensitivity to EGR rate variations, where an increase from 60% to 63% in EGR rate doubled THC and CO emissions and reduced combustion stability. LTC was also sensitive to the fuel injection quantity with an increase in injected mass lowering the overall oxygen-fuel ratio and thereby increasing THC and CO emissions. These two parameters influenced the oxygen concentration in the intake charge; which was identified to be a decisive parameter for the LTC combustion and emissions. Intake charge temperature affected the total charge quantity trapped in the cylinder and showed noticeable influence on CO emissions for the low speed intermediate load condition. Variations in engine speed showed a negligible influence on the LTC combustion processes and emissions.
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运行参数对现代柴油机低温燃烧应用影响的实验分析
影响因子：
2.5
作者：
C. Beatrice;G. Avolio;C. Guido
通讯作者：
C. Guido
影响因子：
1.9
作者：
Cong, S.;McTaggart-Cowan, G. P.;Peckham, M.
通讯作者：
Peckham, M.
DOI：
10.1177/09544070jauto1577
发表时间：
2011-01
期刊：
Proceedings of the Institution of Mechanical Engineers, Part D: Journal of Automobile Engineering
影响因子：
--
作者：
S. Cong;C. Garner;G. McTaggart-Cowan
通讯作者：
S. Cong;C. Garner;G. McTaggart-Cowan
柴油发动机 EGR-VGT 协调控制：实验比较
DOI：
--
发表时间：
2000
期刊：
影响因子：
--
作者：
M. V. Nieuwstadt;I. Kolmanovsky;P. Moraal
通讯作者：
P. Moraal
DOI：
--
发表时间：
2008
期刊：
影响因子：
--
作者：
Dorothea Liebig;Winfried Krane;P. Ziman;T. Garbe;M. Hoenig
通讯作者：
M. Hoenig