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客车底架总成焊接台的设计 被引量:2
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作者 徐云兆 徐素娟 方永红 《人民公交》 2000年第3期26-28,共3页
客车底架总成焊接台是客车生产过程中所需的重要工装之一,为保证生产出高质量的符合设计要求的底架,焊接台通常应满足如下要求:一是定位精度高,可靠性好;二是刚性好;三是工艺性和经济性好。经过几年设计和制造焊接台的经历,我们积累了... 客车底架总成焊接台是客车生产过程中所需的重要工装之一,为保证生产出高质量的符合设计要求的底架,焊接台通常应满足如下要求:一是定位精度高,可靠性好;二是刚性好;三是工艺性和经济性好。经过几年设计和制造焊接台的经历,我们积累了一些经验。现从以下几方面简要介绍一下底架总成焊接台设计时应注意的一些问题及经验。 展开更多
关键词 焊接台 底架 定位基准 框架总成 纵梁 客车生产 定位块 定位支架 夹紧器 定位精度
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Optimization Framework for Conceptual Powertrain Design
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作者 Tobias Hellberg Martin Meywerk 《Journal of Mechanics Engineering and Automation》 2015年第6期327-337,共11页
With an increasing number of vehicles with alternative powertrains, the choice of the most appropriate powertrain system for a vehicle class or a load cycle is challenging. This paper introduces a method to design an ... With an increasing number of vehicles with alternative powertrains, the choice of the most appropriate powertrain system for a vehicle class or a load cycle is challenging. This paper introduces a method to design an optimal alternative powertrain based on a longitudinal dynamic simulation. The objective function of the minimization problem describes the characteristic map of the traction system. The goal of the optimization is to minimize fuel consumption respectively energy demand. Different types of propulsion systems are investigated. The results show that the proposed method delivers useful alternative powertrains by applying an optimization with reasonable restrictions. 展开更多
关键词 Simulation in automotive engineering hybrid powertrain OPTIMIZATION longitudinal dynamic vehicle simulation.
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