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| 1 | 中国地理人的解决研究的概述和进步显示文摘增加的中国都市化和工业化在地理,建筑学,并且城市的计划的领域里推动了更大的注意到人的解决和人陆地的关系的学习。我们使用了 bibliometric 方法和统计软件在 16 本中国地理杂志在人的解决上考察 180 篇文章。我们发现中国地理人的解决研究被下列描绘:( 1 )大多数研究在在媒介的模式放大的宏规模,城市的解决区别和理想集中于人的解决扩展,估价指示物,为城市、农村的解决的模型,理论探索和单个因素的、人的解决和复杂、地理存活率的计划惯例,解决环境的全面评估,并且计划社区单位在微规模,社区解决;关于推进人的解决的社会文化的调查和警告。(2 ) 没有进步在综合并且集成方法系统被取得了。PSR 当模特儿, DPSIR 模型被用于指向机制,当标准解决评估系统被问询表调查由物理与经济的指示物组成时。在另一方面,基于 GIS 的空间聚类是最近的年里的一个经常的焦点。在瓷器都市化和工业化的上下文以内在人的解决和理论系统上开创研究将在中国城市和区域的可持续性上提供指导。下列五个方面要求更大的注意:(1 ) 关于人的解决的自然适用性研究,和人的解决的调查要求在城市的环境,相应估价指示物,系统,和进化有关生态地合适的解决反映不同要求的范围,并且居民的影响社会经济的属性。(2 ) 空间时间的评估和可持续性在各种各样的规模在城市、农村的人的解决上研究,集中于在象在城市之间的城市簇和比较那样的各种各样的规模的进化和空间区别,在城市和社区以内。(3 ) 为人的解决进化研究的理论和技术的开发包括察觉技术和方法,数据采矿测量,并且预报并且地区性、城市的人的解决进化进程,机制和模式的模拟。(4 ) 在为有效管理和开发集中于优化,模式,和政策的人的解决的控制上研究。(5 ) 估计人的解决系统服务值并且建立合适的人的解决系统,包括社会、经济、文化、生态的服务值。 | MA Renfeng WANG Tengfei ZHANG wenzhong YU Jianhui WANG Dai CHEN Li JIANG Yanpeng FENG Gequn | 2016 | Journal of Geographical Sciences2016，26，8： | 6 |
| 2 | Calculation on Cylinder Pressure Fluctuation by Using the Wave Equation in KIVA Program显示文摘Cylinder pressure fluctuation during combustion process of internal combustion engine is closely related to combustion noise and knock.The current studies are based on cylinder pressure test to obtain information on combustion noise and knock,but there is little for simulation of combustion pressure fluctuation.Based on effects of combustion process in the combustion chamber on cylinder pressure by using wave equation,the mechanism of pressure fluctuation during combustion is researched with three-dimensional acoustic wave equation and flow field model of KIVA program.The cylinder pressure fluctuation curve,temperature field and acoustic field are obtained from the coupled calculation of the wave equation and KIVA program.The frequency spectrum analysis is taken with the cylinder pressure oscillation of cylinder pressure measured and calculated.The calculation result is consistent with the experimental result.This indicates that the cylinder pressure fluctuation can be correctly calculated with the wave equation.Analysis of calculation results of temperature field and acoustic field shows that sound field changes faster than flame propagates,and distribution of sound field is more complicated.Combustion pressure oscillation in the diesel engine is under highly unstable condition.This indicates that the combination of cylinder pressure fluctuation model and combustion model is an effective method to study the pressure oscillations and a new method to study the combustion noise and knock. | WEI Haiqiao WEI Jingsi SHU Gequn | 2012 | Chinese Journal of Mechanical Engineering2012，25，2： | 5 |
| 3 | Analysis of an electricity-cooling cogeneration system for waste heat recovery of gaseous fuel engines显示文摘Waste heat recovery(WHR)is one of the most useful ways to improve the efficiency of internal combustion engines,and an electricity-cooling cogeneration system(ECCS)based on Rankin-absorption refrigeration combined cycle for the WHR of gaseous fuel engines is proposed in the paper.This system can avoid wasting the heat in condenser so that the efficiency of the whole WHR system improves,but the condensing temperature of Rankin cycle(RC)must increase in order to use absorption refrigeration system,which leads to the decrease of RC output power.Therefore,the relationship between the profit of absorption refrigeration system and the loss of RC in this combined system is the mainly studied content in the paper.Because the energy quality of cooling and electricity are different,cooling power in absorption refrigeration is converted to corresponding electrical power consumed by electric cooling system,which is defined as equivalent electrical power.With this method,the effects of some important operation parameters on the performance of the ECCS are researched,and the equivalent efficiency,exergy efficiency and primary energy rate are compared in the paper. | SHU GeQun WANG Xuan TIAN Hua LIANG YouCai LIU Yu LIU Peng | 2015 | Science China(Technological Sciences)2015，58，1： | 4 |
| 4 | Identification of Axial Vibration Excitation Source in Vehicle Engine Crankshafts Using an Auto-regressive and Moving Average Model显示文摘Violent axial vibration of a vehicle engine crankshaft might lead to multiple defects to the engine.Much research on mechanism and control measures has been done on engines,such as using the dynamic stiffness matrix method,rayleigh differential method,and system matrix method.But the source of axial vibration has not been identified clearly because there are many excitation factors for the axial vibration of a crankshaft,such as coupled torsional-axial vibration and coupled bending-axial vibration,etc.In order to improve the calculation reliability and identify the excitation source of axial vibration of in vehicle engine crankshafts,this paper presents a method to identify the axial vibration excitation source of crankshafts for high speed diesel engines based on an auto-regressive and moving average(ARMA) model.Through determining initial moving average variables and measuring axial /bending/torsional vibrations of a crankshaft at the free-end of a 4-cylinder diesel engine,autoregressive spectrum analysis is applied to the measured vibration signal.The results show that the axial vibration of the crankshaft is mainly excited by coupled bending vibration at high speed.But at low speed,the axial vibration in some frequencies is excited primarily by torsional excitation.Through investigation of axial vibration source of engine crankshafts,calculation accuracy of vibration can be improved significantly. | LIANG Xingyu WANG Yuesen SHU Gequn WEI Haiqiao DONG Lihui MEI Yifan | 2011 | Chinese Journal of Mechanical Engineering2011，24，6： | 3 |
| 5 | Energy management strategy for hybrid electric vehicle integrated with waste heat recovery system based on deep reinforcement learning显示文摘Hybrid electric vehicles(HEVs)are acknowledged to be an effective way to improve the efficiency of internal combustion engines(ICEs)and reduce fuel consumption.Although the ICE in an HEV can maintain high efficiency during driving,its thermal efficiency is approximately 40%,and the rest of the fuel energy is discharged through different kinds of waste heat.Therefore,it is important to recover the engine waste heat.Because of the great waste heat recovery performance of the organic Rankine cycle(ORC),an HEV integrated with an ORC(HEV-ORC)has been proposed.However,the addition of ORC creates a stiff and multi-energy problem,greatly increasing the complexity of the energy management system(EMS).Considering the great potential of deep reinforcement learning(DRL)for solving complex control problems,this work proposes a DRL-based EMS for an HEV-ORC.The simulation results demonstrate that the DRL-based EMS can save 2%more fuel energy than the rule-based EMS because the former provides higher average efficiencies for both engine and motor,as well as more stable ORC power and battery state.Furthermore,the battery always has sufficient capacity to store the ORC power.Consequently,DRL showed great potential for solving complex energy management problems. | WANG Xuan WANG Rui SHU GeQun TIAN Hua ZHANG XuanAng | 2022 | Science China(Technological Sciences)2022，65，3： | 3 |
| 6 | Experimental study of the influence of a pour point depressant additive on particle size distributions in diesel engine exhausts显示文摘Many studies have been performed on diesel engine particulate matter emissions, but the influence of lubricants on emissions has only been considered a few times, and the effects of lubricant additives have yet to be investigated. We studied the influence of a pour point depressant additive(PPD) on particle emissions and particle size distributions from a four-cylinder turbocharged, inter-cooled engine with CF-415W-40 lubricant, using diesel or diesel containing the PPD. Changing the working conditions changed the number of particles emitted and the location of the peak particle size(s) emitted. The number of particles first increased and then decreased as the engine speed increased. Particle emissions were optimal at low engine speeds and high load, increasing with increasing engine speed. | Xingyu Liang Yuesen Wang Lihui Dong Gequn Shu Changwen Liu | 2014 | Particuology2014，12，2： | 2 |
| 7 | Experimental investigation on diesel engine's waste heat capacity under mapping characteristics显示文摘Waste heat recovery for internal combustion engine(ICE)has been considered as an important strategy to improve efficiency and promote fuel economy,thus alleviating the problems of energy shortage and environmental pollution.This paper investigates the characteristics of various kinds of waste heat energy,namely,waste heat in exhaust,cooling water and charge air,over the engine’s whole operating region.Based on the energy balance experiments,the energy distribution of a conventional heavy-duty diesel engine is obtained under mapping characteristics.According to exergy analysis,the energy recovery potential for waste heat is studied as well.The experimental results indicate that exhaust energy increases with engine speed and load,while cooling water energy is more sensitive to load,especially at low and middle speed.Charge air energy,on the other hand,mainly counts on speed rather than load.Exhaust energy possesses the highest recovery potential in terms of both quantity and quality.Through waste heat recovery,a dramatic improvement in engine efficiency is achievable,actually,the maximum value can amount to 60%or even more. | TIAN Hua ZHANG ChengYu LI XiaoNing SHU GeQun | 2015 | Science China(Technological Sciences)2015，58，1： | 2 |
| 8 | Review of dynamic performance and control strategy of supercritical CO_(2) Brayton cycle显示文摘In recent years,the supercritical carbon dioxide Brayton cycle(SCBC)has been regarded as a promising next generation power conversation system,owing to its high efficiency,compact components,applicability for various kinds of heat sources and so on.This paper makes a detailed review of the dynamic performance and control strategy of SCBC.The dynamic simulation model of SCBC is overviewed in detail including different modeling methods of the main component models and validation of system model.As the most inevitable approach to evaluate the dynamic performance of SCBC in practice,existing SCBC test benches concerning SCBC are well collected and presented.Based on these,the open loop dynamic system performances by changing different manipulated variables are reviewed and then various control methods for essential state parameters by different manipulated variables are summarized.Finally,various control strategies of load following and startup/shutdown are clearly presented.With the rapid development of artificial intelligence,combining the core mechanism model and key parameters identifi-cation based on experimental data and machine learning to obtain an accurate model within a wide range of working condition is a popular trend in modeling of SCBC.Moreover,deep reinforcement learning will be a potential method for the control strategy in SCBC. | Xuan Wang Rui Wang Xingyan Bian Jinwen Cai Hua Tian Gequn Shu Xinyu Li Zheng Qin | 2021 | Energy and AI2021，5，3： | 2 |
| 9 | Simulation and thermodynamic analysis of a bottoming organic rankine cycle (ORC) of diesel engine (DE)显示文摘 | Yu Guopeng Shu Gequn Tian Hua | | 0，，： | 1 |
| 10 | Identification of complex Diesel Engine Noise Source Based on Coherent Power Spectrum Analysis 显示文摘 | Liang Xingyu Shu Gequn | 2007 | Mechanical Systems and Signal Processing2007，21，1： | 1 |
| 11 | Axial vibration of high-speed automotive engine crankshaft显示文摘 | Shu Gequn Liang Xingyu | 2007 | International Journal of Vehicle Design2007，45，4： | 1 |
| 12 | The control gain region for synchronization in non-diffusively coupled complex networks显示文摘 | Liu Gequn Li Wenhui Yang Huijie Gareth Knowles | 2014 | Physica A: Statistical Mechanics and its Applications2014，，： | 1 |
| 13 | Gasoline engine exhaust gas recirculation – A review显示文摘 | Haiqiao Wei Tianyu Zhu Gequn Shu Linlin Tan Yuesen Wang | 2012 | Applied Energy2012，，： | 1 |
| 14 | Carbon Dioxide as Working Fluids in Transcritical Rankine Cycle for Diesel Engine Multiple Waste Heat Recovery in Comparison to Hydrocarbons显示文摘In consideration of the high-temperature characteristic of engine's waste heat and stricter environmental regulations, natural substance, including CO_2 and hydrocarbons, have been treated as promising working fluid for diesel engine waste heat recovery due to its environment friendly and excellent physical and chemical properties. This paper presented a comprehensive performance analysis on transcritical Rankine cycles for diesel engine multiple waste heat recovery using hydrocarbons and CO_2 as working fluid. The optimal turbine inlet pressures corresponding to maximum net power output, maximum exergy efficiency and minimum electricity production cost(EPC) were obtained. The effect of working fluid on these optimal pressures has been discussed. For fluids with low critical temperature, the optimal pressure corresponding to maximum net power output is lower than the one for maximum exergy efficiency, while the opposite results can be found for fluid with high critical temperature. Then, the effect of various working fluid properties in transcritical cycle performance is discussed. Comparison results show that CO_2 obtains only more power output than Ethane, Propane and Propene, but CO_2 is capable of absorbing more energy from engine coolant and regeneration heat with comparable total heat transfer areas and has an advantage in turbine size, particularly for hydrocarbons with high critical temperature. | LIU Peng SHU Gequn TIAN Hua | 2019 | Journal of Thermal Science2019，28，3： | 1 |
| 15 | Identification of complex diesel engine noise sources based on coherent power spectrum analysis 显示文摘 | Shu Gequn Liang Xingyu | 2007 | Mechanical Systems and Signal Processing2007，21，1： | 1 |
| 16 | Simulation and thermodynamic analysis of a bottoming organic Rankine cycle (ORC) of diesel engine (DE) 显示文摘 | Yu Guopeng Shu Gequn Tian Hua | 2013 | Energy2013，51，： | 1 |
| 17 | Parametric and exergetic analy- sis of waste heat recovery system based on thermoelectric generator and organic Rankine cycle utilizing R123 显示文摘 | Shu Gequn Zhao Jian | 2012 | Enerev2012，45，1： | 1 |
| 18 | Simulationand thermodynamic analysis of a bottoming OrganicRankine Cycle (ORC) of diesel engine (DE) 显示文摘 | Yu Guopeng Shu Gequn Tian Hua | 2013 | Energy2013，51，9： | 1 |
| 19 | Analysis of on- set and severity of knock in SI engine based on in-cylin- der pressure oscillations 显示文摘 | SHU Gequn PAN Jiaying WEI Haiqiao | 2013 | Applied Thermal Enginee> ing2013，51，2： | 1 |
| 20 | A review of waste heat recovery on two-stroke IC engine aboard ships 显示文摘 | SHU Gequn LIANG Youcai WEI Haiqiao | 2013 | Renewable & Sus- tainable Energy Rev2013，，19： | 1 |
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