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2023年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2023年第7卷第1期页码 7-34

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2019年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2019年第3卷第1期页码 6-28

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2020年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2020年第4卷第1期页码 9-29

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2021年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2021年第5卷第1期页码 9-30

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2017年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2017年第1卷第1期页码 7-34

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2018年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2018年第2卷第1期页码 5-26

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2022年度机械与运载工程前沿

机械与运载工程项目组

《全球工程前沿》 2022年第6卷第1期页码 7-32

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车路协同环境下的交通工程

王云鹏,鲁光泉,于海洋

《中国工程科学》 2018年第20卷第2期页码 106-110 doi: 10.15302/J-SSCAE-2018.02.016

摘要：

交通工程的产生与发展始终围绕着交通系统中的人车路耦合关系，来实现高效、安全、绿色的目标。载运工具智能化和车路/车车互联推动了车路协同技术的发展，将使交通系统逐渐从车路协调走向车路协同，并进一步提升交通系统的效能与安全。在车路协同环境下，传统交通系统中人为因素弱化，人车路耦合性增强，系统可控可测，随机性减弱，系统的感知、决策及控制主体逐渐从驾驶人转向机器，这给传统交通工程的基础理论方法带来了诸多变化与挑战。本文主要从人车路耦合的角度重点探讨车路协同系统对交通工程的影响，并提出未来发展过程中亟需解决的科学问题。

关键词：交通工程车路协同发展趋势

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机械与运载工程领域颠覆性技术战略研究

杨艳明,赵云,邵珠峰,李道春,高增桂,张子龙,沈悦,王林军

《中国工程科学》 2018年第20卷第6期页码 27-33 doi: 10.15302/J-SSCAE-2018.06.005

摘要：

通过文献研究和专家访谈等方法，提出机械与运载工程领域已有或潜在的颠覆性技术：仿生智能技术、无轴轮缘推进技术、智能无人飞行器技术、超回路列车技术和微机电系统，对这五项技术的创新性和颠覆性优势进行了分析，最后提出机械与运载领域颠覆性技术的发展建议。

关键词：机械与运载工程颠覆性技术仿生智能技术无轴轮缘推进技术智能无人飞行器技术超回路列车技术微机电系统

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Explicit optimization method for cutting-screw-thread on the basis of dual-RSM

Zhengbao LEI, Shubin WEI, Qingyun DU

《机械工程前沿（英文）》 2010年第5卷第4期页码 423-430 doi: 10.1007/s11465-010-0109-7

摘要： To obtain the explicit function for optimizing the cutting-screw-thread (CST) in crash, the simulations of frontal crash at the speed of 56 km/h have been carried out in VPG. The peak acceleration in crash has been taken as the evaluation index of energy absorption characteristics. First, the single factor experiment was taken based on six parameters affecting on the absorption characteristics of CST. Second, the peak acceleration function of each parameter by using response surface method (RSM) is obtained. Third, the explicit resultant peak acceleration function of six parameters by using RSM again is obtained. A dual RSM-based explicit method is proposed. According to this function, the best size dimensions of CST in different crash conditions could be easily obtained. Finally, an example shows that the values of the calculation errors for simulation value and target value (40 g) are 3.6% and 1.3%, respectively. This method can satisfy the demand for engineering accuracy.

关键词： vehicle engineering crash safety explicit method response surface method

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电动商用车系统工程技术体系及关键技术研究

孙逢春,何洪文

《中国工程科学》 2018年第20卷第1期页码 59-67 doi: 10.15302/J-SSCAE-2018.01.009

摘要：

发展新能源汽车是世界共识，以纯电驱动为特点的新能源汽车被确定为我国的战略性新兴产业和“中国制造2025”重点领域。本文对我国电动商用车发展的历程和技术路线、特点等进行了综述，结合北京奥运会“零排放区24 h不间断安全运行”的需求背景，系统提出并明确了“电动商用车系统工程”的内涵，就其三大核心组成要素“电动商用车平台、充/换电站、运营监控”及其关键技术，分别进行了研究分析。最后，针对我国新能源汽车2020年500万辆级规模应用和2022年北京冬季奥林匹克运动会–25 ℃环境下的应用需求，探讨了电动商用车系统工程体系化升级的抓手，目标是真正实现纯电动商用车“性能优越、技术无短板、推广应用无禁区”。

关键词：电动商用车充/换电站运营监控系统工程冬季奥林匹克运动会

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长征三号系列运载火箭

龙乐豪

《中国工程科学》 1999年第1卷第1期页码 11-18

摘要：

论述了长征三号系列运载火箭诞生的背景、设计思路、总体技术方案、应用发射结果及其在技术与研制工作方面的特点，展望了其发展前景，指出该系列运载火箭是我国目前性能先进的大型主力商业应用发射火箭群体。

关键词：航天大型运载火箭发射服务长征三号系列

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Recent developments in passive interconnected vehicle suspension

Wade A. SMITH, Nong ZHANG,

《机械工程前沿（英文）》 2010年第5卷第1期页码 1-18 doi: 10.1007/s11465-009-0092-z

摘要： This paper presents an overall review on the historical concept development and research advancement of passive hydraulically interconnected suspension (HIS) systems. It starts with an introduction to passive HIS systems and their various incarnations developed over many decades. Next, a description is provided of a recently proposed multidisciplinary approach for the frequency-domain analysis of vehicles fitted with an HIS. The experimental validation and applications of the method to both free and forced vibration analysis are discussed based on a simplified, roll-plane half-car model. A finite-element-method-based approddach for modelling the transient dynamics of an HIS vehicle is also briefly outlined. In addition, recent work on the investigation of NVH associated with HIS-equipped vehicles is mentioned. Discussion is then provided on future work to the further understanding of HIS and its applications. The paper concludes that interconnected suspension schemes can provide much greater flexibility to independently specify modal stiffness and damping parameters – a characteristic unique among passive suspensions. It points out that there is a need for system optimisation, and there are troublesome NVH issues that require solutions. It suggests that further research attention and effort be paid to NVH issues and system level optimisation to gain a greater understanding of HIS and to broaden its applications.

关键词： interconnected suspensions rollover prevention vehicle dynamics ride comfort multibody system dynamics hydraulic system dynamics

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Cumulant-based correlated probabilistic load flow considering photovoltaic generation and electric vehicle

Nitesh Ganesh BHAT, B. Rajanarayan PRUSTY, Debashisha JENA

《能源前沿（英文）》 2017年第11卷第2期页码 184-196 doi: 10.1007/s11708-017-0465-7

摘要： This paper applies a cumulant-based analytical method for probabilistic load flow (PLF) assessment in transmission and distribution systems. The uncertainties pertaining to photovoltaic generations and aggregate bus load powers are probabilistically modeled in the case of transmission systems. In the case of distribution systems, the uncertainties pertaining to plug-in hybrid electric vehicle and battery electric vehicle charging demands in residential community as well as charging stations are probabilistically modeled. The probability distributions of the result variables (bus voltages and branch power flows) pertaining to these inputs are accurately established. The multiple input correlation cases are incorporated. Simultaneously, the performance of the proposed method is demonstrated on a modified Ward-Hale 6-bus system and an IEEE 14-bus transmission system as well as on a modified IEEE 69-bus radial and an IEEE 33-bus mesh distribution system. The results of the proposed method are compared with that of Monte-Carlo simulation.

关键词： battery electric vehicle extended cumulant method photovoltaic generation plug-in hybrid electric vehicle probabilistic load flow

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Emission components characteristics of a bi-fuel vehicle at idling condition

Sameh M. METWALLEY, Shawki A. ABOUEL-SEOUD, Abdelfattah M. FARAHAT

《能源前沿（英文）》 2011年第5卷第3期页码 322-329 doi: 10.1007/s11708-011-0158-6

摘要： Natural gas (NG) represents today a promising alternative to conventional fuels for road vehicles propulsion, since it is characterized by a relatively low cost, better geopolitical distribution than oil, and lower environmental impact. This explains the current spreading of compressed natural gas (CNG) fuelled spark ignition (SI) engine, above all in the bi-fuel version, which is able to run either with gasoline or with NG. However, the aim of the present investigation is to evaluate the emission characteristics at idling condition. The vehicle engine was converted to bi-fueling system from a gasoline engine, and operated separately either with gasoline or CNG. Two different fuel injection systems (i.e., multi-point injection (MPI)-sequential and closed-loop venturi-continuous) are used, and their influences on the formation of emissions at different operating conditions are examined. A detailed comparative analysis of the engine exhaust emissions using gasoline and CNG is made. The results indicate that the CNG shows low air index and lower emissions of carbon monoxide (CO), carbon dioxide (CO ), and total hydrocarbon (THC) compared to gasoline.

关键词： road vehicle engine fuel injection systems carbon monoxide (CO) carbon dioxide (CO₂) total hydrocarbon (THC) vehicle idle conditions air index