燃料电池客车整车控制系统的研究

针对燃料电池客车动力系统的结构形式,作者在分析了整车控制系统的功能需求后,完成了整车控制系统的设计,实现了车载控制器局域网络(CAN)通信、能量管理策略、驾驶员意图解释和故障诊断处理等功能。随后建立了基于dSPACE的快速控制器原型,并利用台架试验进行了硬件在环仿真调试。最后通过实车道路行驶试验验证了整车控制系统的可行性。     

一体式起动发电机系统概述

随着车用电器功率的不断增长,一体式起动发电机(ISA)系统被开发以满足电能需求。该系统的五项主要功能可分别改善经济性、舒适性等整车性能,但各功能的应用对储能系统分别提出了一定要求。现有的各种储能技术都不能全面满足ISA系统的能量要求,必须开发新的储能技术或系统。ISA系统的使用结果表明,该系统可显著提高燃油经济性及低速时的驾驶舒适性。     

马鹿箐隧道高压富水大体量充填性溶腔处治技术

宜万铁路马鹿箐隧道DK255+978处通过一高压富水隐伏溶腔,先后发生多达19次的突涌水(泥)灾害.在对该高压富水隐伏岩溶的处治中,系统地运用了释能降压原理,释放了溶腔所存储的能量,降低了水土压力对隧道的稳定性影响.释能降压技术主要采取了综合地质预报手段探明溶腔边界、内部充填物特性和分布特征等,并根据溶腔的水压、水量测试结果进行排水系统规划、钻孔泄水,采用控爆措施揭开溶腔,并进行实时预警预报监控.结果表明,运用释能降压技术处治马鹿箐+978溶腔,规避了岩溶溃水的风险,取得了良好的效果.     

论能效设计指数（EEDI）现阶段强制实施的合理性

船舶能效设计指数（EEDI）是对未来造船界有深远影响的一项新的IMO法规。本文从政治、经济及技术等方面对船舶能效设计指数推出的合理性进行了全面的阐述。     

工程支持船柴油机余热分析及利用

分析了船舶柴油机余热的形成及组分,并就无动力多功能工程支持船余热利用方案进行了探讨。     

Modeling and forecasting household energy consumption and related CO2 emissions integrating UrbanSim and transportation models: an Atlanta BeltLine case study

Reducing energy consumption and controlling greenhouse gas emissions are key challenges for urban residents. Because urban areas are complex and dynamic, affected by many driving factors in terms of growth, development, and demographics, urban planners and policy makers need a sophisticated understanding of how residential lifestyle, transportation behavior, land-use changes, and land-use policies affect residential energy consumption and associated CO₂ emissions. This study presents an approach to modeling and simulating future household energy consumption and CO₂ emissions over a 30-year planning period, using an energy-consumption regression approach based on the UrbanSim model. Outputs from UrbanSim for a baseline scenario are compared with those from a no-transportation-demand model and an Atlanta BeltLine scenario. The results indicate that incorporation of a travel demand model can make the simulation more reasonable and that the BeltLine project holds potential for curbing energy consumption and CO₂ emissions.     

平台工作船舱室噪声预报分析

基于统计能量法(SEA),采用VA One软件,建立某85 m平台工作船的SEA模型,进行不同工况下的舱室噪声预测,并与实测值进行比较。对比分析平台工作船在航行工况下不同主机负荷时的舱室噪声规律以及动力定位(DP)工况下侧推桨45%负荷时的舱室噪声规律;对比不同激励对舱室噪声的影响,并分析舱室噪声预测时应考虑的一些因素。通过对比不同工况下的噪声预测值与实测值发现,艏侧推桨是平台工作船最重要的噪声源,尤其是在侧推桨出现空泡情况下,噪声超标严重。分析结果可为该类型船舶的降噪措施提供参考。     

振荡浮标式波浪能发电机设计参数的初步选定

参考某型振荡浮标式波浪能发电机的具体参数,结合装置的工作过程,建立海洋浮标工作过程的动力学方程;基于数值分析软件Matlab分析给定海况下浮标质量、电磁阻尼系数与装置工作安全性、能量转换效率的对应关系;探索了一组装置结构的最优化参数。研究结果对海洋可再生能源研究具有一定的参考价值。     

Detailed assessment of global transport-energy models’ structures and projections

This paper focuses on comparing the frameworks and projections from four global transportation models with considerable technology details. We analyze and compare the modeling frameworks, underlying data, assumptions, intermediate parameters, and projections to identify the sources of divergence or consistency, as well as key knowledge gaps. We find that there are significant differences in the base-year data and key parameters for future projections, especially for developing countries. These include passenger and freight activity, mode shares, vehicle ownership rates, and energy consumption by mode, particularly for shipping, aviation and trucking. This may be due in part to a lack of previous efforts to do such consistency-checking and “bench-marking.” We find that the four models differ in terms of the relative roles of various mitigation strategies to achieve a 2 °C/450 ppm target: the economics-based integrated assessment models favor the use of low carbon fuels as the primary mitigation option followed by efficiency improvements, whereas transport-only and expert-based models favor efficiency improvements of vehicles followed by mode shifts. We offer recommendations for future modeling improvements focusing on (1) reducing data gaps; (2) translating the findings from this study into relevant policy implications such as gaps of current policy goals, additional policy targets needed, regional vs. global reductions; (3) modeling strata of demographic groups to improve understanding of vehicle ownership levels, travel behavior, and urban vs. rural considerations; and (4) conducting coordinated efforts in aligning historical data, and comparing input assumptions and results of policy analysis and modeling insights.     

基于成本-效益分析的公共停车场建设评估模型

首先论述了公共停车场建设前进行成本-效益分析的重要性.通过对目前公共停车场建设项目评估方法的分析和比较,对费用效益分析法、层次分析法和模糊综合评判进行了综合运用.结合交通建设项目特点,构建了公共停车场的效益评估指标体系,并选择使用升半岭形分布函数作为隶属函数对效益评估数据进行处理.使用费用效益分析法对公共停车场建设进行投资成本计算,并使用极差变换法得出评估结果.在分别给出成本和效益的评估方法和评估模型基础上,最后综合得出停车场建设评估模型,并通过实例说明了该方法的实用性.