车用发动机电控式EGR系统设计解析

车用发动机的有害排放物是造成大气污染的一个主要来源,随着环境保护问题的重要性日趋增加,降低发动机有害排放物这一目标成为当今世界上发动机发展的一个重要方向。通过对车用发动机废气再循环(EGR)系统的控制方法设计的解析,说明在安装一套排气再循环EGR控制系统是有效降低车用发动机有害排放物的行之有效的方法。     

中国新能源汽车企业协同创新模式的创新绩效及作用路径研究

新时代下,协同创新已成为新能源汽车企业快速适应外部复杂环境、解决创新效率低下,规避创新风险的必然选择.根据相关研究,在区分新能源汽车企业协同创新模式的基础上,构建了面向不同创新绩效的协同创新模式作用模型,并利用中国新能源汽车企业的调研数据,实证分析协同创新模式的作用路径.结果表明,三种协同创新模式均能促进创新绩效提升,且动态知识管理能力的中介作用和环境不确定性的调节作用也得到了验证,但各模式的作用情境有所差异,为新能源汽车企业基于创新目标选择协同创新模式提供了依据.     

The electric vehicle revolution: Critical material supply chains,trade and development

The emergence of a mass market for electric vehicles (EVs) offers development opportunities for countries that have abundant resources of cobalt, nickel, lithium, copper, aluminium and manganese. Not surprisingly, developing countries have proposed ambitious plans to expand production of these raw materials. However, an observation from the resource curse literature is that strong institutions are required if they are to mitigate the risk of poorly directed, often excessively procyclical, investment, not least because of the complexity, opacity and price volatility of many raw materials utilised by global EV value chains. This paper examines the outlook for EV demand and associated raw material usage paying attention to the drivers and sensitivities required to assess and track future market transformations. These end use shifts are then placed in the context of the broader supply chain adjustments and trends shaping the demand. For resource exporters, adapting to structural change will require fiscal, regulatory, environmental and institution reforms designed to capture shifting patterns of resource wealth in a way which takes appropriate account of comparative advantages in specific value chains and mitigates adverse environmental and social consequences from their extraction and processing.