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CO, N, and CO/N mixed gas injection for enhanced shale gas recovery and CO geological storage
《能源前沿(英文)》 2023年 第17卷 第3期 页码 428-445 doi: 10.1007/s11708-023-0865-9
关键词: shale gas gas injection competitive adsorption enhanced shale gas recovery CO2 geological storage
欧长劲
《中国工程科学》 2007年 第9卷 第5期 页码 27-32
针对气辅注塑成形的注气压力精确控制要求,设计了具有5层结构的模糊神经网络控制器和控制算法,利用神经网络的学习能力实现对模糊逻辑规则的优化,改善了系统的适应性。对系统3段压力控制的仿真 分析,验证了模糊神经网络控制模型的可行性,控制效果良好。
Jingrui LI, Haifeng LIU, Xinlei LIU, Ying YE, Hu WANG, Xinyan WANG, Hua ZHAO, Mingfa YAO
《能源前沿(英文)》 2021年 第15卷 第2期 页码 405-420 doi: 10.1007/s11708-021-0718-3
关键词: high-pressure direct-injection natural gas chemical kinetics combustion modelling marine engine
Yongtao LI, Christina L. MCCARTY, Ed J. GEORGE
《环境科学与工程前沿(英文)》 2011年 第5卷 第3期 页码 417-425 doi: 10.1007/s11783-011-0310-x
关键词: automated solid-phase extraction programmed-temperature vaporization large-volume injection gas chromatography/mass spectrometry semi-volatile organic compounds water analysis
WANG Jinhua, HUANG Zuohua, LIU Bing, ZENG Ke, YU Jinrong, JIANG Deming
《能源前沿(英文)》 2008年 第2卷 第2期 页码 194-201 doi: 10.1007/s11708-008-0035-0
邱水金,姜少飞 ,柴国钟,鲁聪达
《中国工程科学》 2009年 第11卷 第4期 页码 84-90
对截面形状为s-3的加强筋进行工艺参数优化分析,讨论了气辅成型工艺参数对成型质量的影响程度,获得了一组较好的工艺参数组合。以此为参考标准,改变某一个工艺参数而保持其他工艺参数不变,对比研究4种不同截面形状加强筋在气辅成型条件下的成型情况,并考察了单个工艺参数对成型质量的影响趋势情况。
喷射策略对低负荷下天然气——柴油双燃料预混压燃燃烧的影响研究 Article
Hyunwook Park, Euijoon Shim, Choongsik Bae
《工程(英文)》 2019年 第5卷 第3期 页码 548-557 doi: 10.1016/j.eng.2019.03.005
双燃料预混压燃(dual-fuel premixed charge compression ignition, DF-PCCI)燃烧因其氮氧化物(NOx)和颗粒物(PM)排放低而被认为是重载压燃发动机中传统柴油燃烧的可行替代方案。当天然气(NG)应用于DF-PCCI发动机时,其低反应活性降低了高负荷下的最大压升率。然而,天然气- 柴油DF-PCCI发动机在低负荷工况运行时存在燃烧效率低的问题。为了降低低负荷工况下的燃料消耗率、未燃碳氢化合物(HC)和一氧化碳(CO)排放,本文研究了DF-PCCI发动机中供给燃料(天然气和柴油)的喷射策略。研究发现,天然气替代率和柴油喷射时刻(start of energizing, SOE)的改变有效地控制了燃料- 空气混合气的形成。采用柴油两次喷射策略可以调节混合气的局部反应活性。预喷柴油SOE 的延迟和预喷柴油喷射量的减少有利于降低燃烧损失。废气再循环(EGR)的引入通过推迟燃烧相位改善了燃料经济性并将NOx 和PM 排放降低至欧六(Euro Ⅵ)标准以下。结合40%天然气替代率,柴油两次喷射策略和中等EGR 率可以在低负荷工况下有效提高燃烧效率与指示效率,并降低HC和CO排放。
Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)
Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI
《环境科学与工程前沿(英文)》 2014年 第8卷 第6期 页码 863-870 doi: 10.1007/s11783-013-0618-9
关键词: acid gas HCl Ca(OH)2 dry adsorption high temperature dual-layer granular bed filter
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 74-84 doi: 10.1007/s11465-018-0490-1
Compared with conventional injection molding, injection-compression molding can mold optical parts with higher precision and lower flow residual stress. However, the melt flow process in a closed cavity becomes more complex because of the moving cavity boundary during compression and the nonlinear problems caused by non-Newtonian polymer melt. In this study, a 3D simulation method was developed for injection-compression molding. In this method, arbitrary Lagrangian-Eulerian was introduced to model the moving-boundary flow problem in the compression stage. The non-Newtonian characteristics and compressibility of the polymer melt were considered. The melt flow and pressure distribution in the cavity were investigated by using the proposed simulation method and compared with those of injection molding. Results reveal that the fountain flow effect becomes significant when the cavity thickness increases during compression. The back flow also plays an important role in the flow pattern and redistribution of cavity pressure. The discrepancy in pressures at different points along the flow path is complicated rather than monotonically decreased in injection molding.
关键词: injection-compression molding simulation injection molding melt flow cavity pressure
density measurement for plastic injection molding via ultrasonic technology
《机械工程前沿(英文)》 2022年 第17卷 第4期 doi: 10.1007/s11465-022-0714-2
关键词: ultrasonic measurement melt density in-situ measurement injection molding
Trend prediction technology of condition maintenance for large water injection units
Xiaoli XU, Sanpeng DENG
《机械工程前沿(英文)》 2010年 第5卷 第2期 页码 171-175 doi: 10.1007/s11465-009-0091-0
关键词: water injection units condition-based maintenance trend prediction
Intelligent methods for the process parameter determination of plastic injection molding
Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI
《机械工程前沿(英文)》 2018年 第13卷 第1期 页码 85-95 doi: 10.1007/s11465-018-0491-0
Injection molding is one of the most widely used material processing methods in producing plastic products with complex geometries and high precision. The determination of process parameters is important in obtaining qualified products and maintaining product quality. This article reviews the recent studies and developments of the intelligent methods applied in the process parameter determination of injection molding. These intelligent methods are classified into three categories: Case-based reasoning methods, expert system-based methods, and data fitting and optimization methods. A framework of process parameter determination is proposed after comprehensive discussions. Finally, the conclusions and future research topics are discussed.
关键词: injection molding intelligent methods process parameters optimization
《能源前沿(英文)》 2023年 第17卷 第5期 页码 678-691 doi: 10.1007/s11708-022-0859-z
关键词: gasoline compression ignition injection strategy fuel stratification high efficiency high load
Experimental study of stratified lean burn characteristics on a dual injection gasoline engine
Chun XIA, Tingyu ZHAO, Junhua FANG, Lei ZHU, Zhen HUANG
《能源前沿(英文)》 2022年 第16卷 第6期 页码 900-915 doi: 10.1007/s11708-021-0812-6
关键词: dual injection stratified lean burn gasoline engine particulate matter emission combustion analysis
标题 作者 时间 类型 操作
Development of a simplified n-heptane/methane model for high-pressure direct-injection naturalgas marine engines
Jingrui LI, Haifeng LIU, Xinlei LIU, Ying YE, Hu WANG, Xinyan WANG, Hua ZHAO, Mingfa YAO
期刊论文
semi-volatile organic compounds in water using automated online solid-phase extraction with large-volume injection/gas chromatography/mass spectrometry
Yongtao LI, Christina L. MCCARTY, Ed J. GEORGE
期刊论文
Effect of ignition timing and hydrogen fraction on combustion and emission characteristics of natural gasdirect-injection engine
WANG Jinhua, HUANG Zuohua, LIU Bing, ZENG Ke, YU Jinrong, JIANG Deming
期刊论文
Laboratory study on high-temperature adsorption of HCl by dry-injection of Ca(OH)
Junjun TAN,Guohua YANG,Jingqiao MAO,Huichao DAI
期刊论文
Three-dimensional numerical simulation for plastic injection-compression molding
Yun ZHANG, Wenjie YU, Junjie LIANG, Jianlin LANG, Dequn LI
期刊论文
Trend prediction technology of condition maintenance for large water injection units
Xiaoli XU, Sanpeng DENG
期刊论文
Intelligent methods for the process parameter determination of plastic injection molding
Huang GAO, Yun ZHANG, Xundao ZHOU, Dequn LI
期刊论文
methodology for regulating fuel stratification and improving fuel economy of GCI mode via double main-injection
期刊论文