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51401.NDIR方法应用于汽油车NO排气检测的试验研究
[汽车制造业] [2015-06-09]
为改善在用点燃式轻型汽车简易工况NO排气检测准确性,将NDIR检测法应用于NO的排放检测。采用比对测试方法,在184辆在用轻型汽油车的ASM排放检测中,同时采用NDIR方法与通用的电化学法进行排气NO浓度测试。测试结果表明,对于NO检测,NDIR方法与工况的跟随性较电化学方法好,电化学方法测试响应时间较NDIR方法滞后7~8s。采用有限差分法对两种检测方法的检测灵敏度进行分析,得出NDIR法的灵敏度为11.87,电化学法为6.97。分析NDIR法、电化学法两种检测方法下NO测试浓度值的相关性,发现两者高度线性相关,相关系数为0.98。研究结果表明NDIR方法完全适用于ASM工况NO排气浓度检测,其检测准确率较电化学方法高。
关键词：轻型汽油车；一氧化氮；排放测量；非分光红外法；电化学法；灵敏度；相关性
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51402.离心压气机叶轮出口气体流动演变规律数值仿真研究
[汽车制造业] [2015-06-09]
采用全三维仿真计算方法,针对离心压气机叶轮出口位置,进行了气体流动演变规律研究。研究结果表明:相同转速下,随着流量的减小,叶轮出口绝对气流角增加,且增加的范围主要集中在叶轮流道中心以下区域,叶顶区域变化不明显;相同转速下,叶轮出口总压比呈逐渐增加趋势;相同转速下,流量的减小使得叶轮顶部的效率损失减小而主流区的效率损失增加,压气机的最终效率取决于间隙流和主流流动损失的耦合作用。
关键词：离心压气机；叶轮；出口绝对气流角；流动分布
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51403.全球汽车头颈部保护系统市场报告（2015-2019年）
[医药制造业,汽车制造业] [2015-06-06]
Automotive safety systems are designed to comply with the standards and regulations prescribed by government agencies and transport authorities worldwide. A whiplash protection system (WHIPS) is a passive safety system that is designed to protect passengers and drivers against neck and spine injuries. With growing safety concerns among consumers and increasing road fatalities, government agencies and organizations, such as Euro NCAP, US NCAP, and NHTSA, are mandating the inclusion of WHIPS in all new automobiles.
关键词：汽车安全系统；符合；标准和法规；被动安全系统；脊椎受伤
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51404.汽车竞争情报-第551期
[汽车制造业] [2015-06-03]
报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。
关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新
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51405.美国二手车市场报告（2015-2019年）
[汽车制造业] [2015-05-28]
Used cars are vehicles that have been previously owned by one or more owners. Used cars are increasingly becoming an alternative to new vehicles because of increased interest among consumers and the popularity of certified used cars.
关键词：美国；二手车；市场分析
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51406.全球电动汽车市场报告（2015-2019年）
[电气机械和器材制造业,汽车制造业,电力、热力、燃气及水生产和供应业] [2015-05-27]
An electric motor is an electro-mechanical device that converts electrical energy to mechanical energy. Manual processes are converted to highly mechanized operations with the help of motors. Electric motors are used in a wide range of applications, from household devices to industrial machinery. Electric motors are segmented into different categories based on their output power or type. The most widely used electric motors are FHPs based on output power, and AC motors based on type of electric motor.
关键词：电机；机电装置；电能转换；机械能；电动马达
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51407.汽车竞争情报-第549期
[汽车制造业] [2015-05-21]
报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。
关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新
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51408.汽车竞争情报-第548期
[汽车制造业] [2015-05-14]
报告从宏观政策环境、地方政策动态、竞争对手情报、产品与技术创新等几个方面进行了分析及评论。
关键词：宏观政策环境；地方政策动态；竞争对手情报；产品与技术创新
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51409.全球汽车传动系统市场报告（2015-2019年）
[汽车制造业] [2015-05-12]
A drivetrain is a group of components in a vehicle that delivers power to the driving wheels. There are three types of drivetrain: AWD, FWD, and RWD. Each drivetrain has two functions - first, to transmit power from the engine to the driving wheel and second, to vary the amount of torque.
关键词：传动系；提供动力；驱动轮；AWD；FWD；RWD
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51410.北美汽车共享市场报告（2014-2018年）
[交通运输、仓储和邮政业,汽车制造业] [2015-05-12]
Car-sharing is a membership-based, self-service system that contains a network of stations and vehicles, and is an alternative to traditional car ownership for individuals and companies. In this system, vehicles are owned by a separate firm, an organization, or individuals and are shared by users for short period of time. Over the past three decades, car-sharing has grown from a basic service provided by popular organizations to a widely recognized Urban Transport industry. It is also quickly developing into a globalized industry providing many with transportation, land use, environmental, and social benefits.
关键词：汽车共享；网络会员制；自助服务系统；替代；传统汽车
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