2014年7月，汽车市场进入传统淡季，产销环比下降，同比保持稳定增长。乘用车产销同比继续保持快速增长势头，商用车市场依旧低迷，产销量环比、同比均有不同程度下降。7月，中国品牌表现依然弱势，其中中国品牌乘用车市场份额连续第十一个月同比下降，中国品牌轿车市场占有率创下2009年以来的最低值。小排量乘用车市场份额较上月及上年同期均有所提升。7月，我国汽车企业出口仍未摆脱下滑局面，环比、同比降幅均超过10%。全国汽车市场价格稳中小幅走低，国产汽车与进口汽车价格均呈下降态势。2014年上半年，汽车工业重点企业（集团）经济运行平稳，主要经济指标保持较快增长。

关键词：汽车行业；运行分析

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关键词：汽车产业；零部件；现状

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关键词：

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报告从新能源、新材料、节能环保、生物等方面进行了分析评论。

关键词：新能源；新材料；节能环保；生物

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介绍了汽车融资租赁业务的主要模式，结合全球融资租赁行业加强信用风险管理的趋势，分析 了汽车融资租赁行业信用风险管理以及公司信用风险内部评级模型的应用。

关键词：融资租赁；汽车；信用风险；内部评级模型

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The diffractive optical elements,with the negative dispersive characteristic and the random phase distributing to realize random phase modulation for wave-front,are not only helpful to simplify the optical system,but also improve the image quality,while putting it into the optical system.It can decrease the element numbers of the system and obtain a compact configuration that introducing diffractive optical element into the design of eyepiece.A hybrid diffractive-refractive wide-angle eyepiece,with a big exit pupil distance,is designed by using the Code V Optical Design Software.The features of the wide-angle eyepiece are 30mm effective focal length,60°whole field-of-view (FOV),30mm exit pupil distance and 6mm exit pupil diameter,and which consists of four lens and two diffractive elements.From the result of design,the MTF in the center field of the wide-angle eyepiece is over 0.55at 601p/mm,at the same time,the MTFs in all fields are over 0.3 at 501p/am,which show that this wide-angle eyepiece has a great image quality.

关键词：应用光学；大出瞳距离；广角目镜；光学设计

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control strategy is one of the most decisive techniques in Hybrid Electric Bus (HEB) and directly influences the dynamic performance and fuel economy.For achieving the best fuel economy and keeping the battery for a long time,First,power analytic control strategy was built; then,the hybrid optimization algorithm (HOA) based on Multi-island genetic Algorithm (MIGA) and NLPQL was built by ISIGHT software.HOA is adopted in control strategy parameters of HEB optimization.The results show that the best result can be obtained in few iterative times by HOA,the calculation time was reduce by 12 hours,the fuel economy was improved by 12％ and find the rules between control strategy parameters and fuel economy 、the balance of the battery state of charge(SOC).

关键词：混合动力客车;控制策略;多岛遗传算法;混合优化算法

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Simulations of a supersonic recessed-cavity flow are performed using a hybrid large-eddy/Reynolds-averaged simulation approach utilizing an inflow turbulence recycling procedure and hybridized inviscid flux scheme. Calorically perfect air enters a three-dimensional domain at a free stream Mach number of 2.92. Simulations are performed to assess grid sensitivity of the solution, efficacy of the turbulence recycling, and the effect of the shock sensor used with the hybridized inviscid flux scheme. Analysis of the turbulent boundary layer upstream of the rearward-facing step for each case indicates excellent agreement with theoretical predictions. Mean velocity and pressure results are compared to Reynolds-averaged simulations and experimental data for each case and indicate good agreement on the finest grid. Simulations are repeated on a coarsened grid, and results indicate strong grid density sensitivity. Simulations are performed with and without inflow turbulence recycling on the coarse grid to isolate the effect of the recycling procedure, which is demonstrably critical to capturing the relevant shear layer dynamics. Shock sensor formulations of Ducros and Larsson are found to predict mean flow statistics equally well.

关键词：大涡模拟;雷诺平均;湍流效应;超音速流动;混合动力车

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本文非别从2013-2014年中国先进制造产业发展概况、产业政策与支撑体系、发展预测等几个方面进行了分析评论。

关键词：金属制品；通用设备；专用设备；汽车制造；电气机械；计算机；通信；电子设备；仪器仪表；铁路；船舶；航空；航天；发展概况；产业政策；支撑体系；发展预测

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A "seeded fault test" in support of a rotorcraft condition based maintenance program (CBM), is an experiment in which a component is tested with a known fault while health monitoring data is collected. These tests are performed at operating conditions comparable to operating conditions the component would be exposed to while installed on the aircraft. Performance of seeded fault tests is one method used to provide evidence that a Health Usage Monitoring System (HUMS) can replace current maintenance practices required for aircraft airworthiness. Actual in-service experience of the HUMS detecting a component fault is another validation method. This paper will discuss a hybrid validation approach that combines in service-data with seeded fault tests. For this approach, existing in-service HUMS flight data from a naturally occurring component fault will be used to define a component seeded fault test. An example, using spiral bevel gears as the targeted component, will be presented. Since the U.S. Army has begun to develop standards for using seeded fault tests for HUMS validation, the hybrid approach will be mapped to the steps defined within their Aeronautical Design Standard Handbook for CBM. This paper will step through their defined processes, and identify additional steps that may be required when using component test rig fault tests to demonstrate helicopter CI performance. The discussion within this paper will provide the reader with a better appreciation for the challenges faced when defining a seeded fault test for HUMS validation.

关键词：直升机的性能；飞机的可靠性；系统健康监测；混合动力系统

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