共查询到18条相似文献,搜索用时 187 毫秒
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随着燃油价格的不断提高,汽车的燃油经济性越来越被关注。如何减少燃油消耗成为整车制造商面临的一个主要问题。最近几年,柴油发动机在提高燃油经济性、减少排放上取得了很大进展,但除了改进发动机外,还可以通过优化传动系统来降低油耗。目前汽车制造商主要提供了两种动力系统:超速传动系统和直接传动系统。 相似文献
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根据6×4工程自卸车的使用环境,通过动力传动系统的匹配,优化整车动力性和燃油经济性。并对比仿真分析、转毂试验和道路试验的结果,验证匹配的合理性。并针对不同发动机风扇类型,进行了对比试验,初步确认对经济性的影响。 相似文献
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改变传动系单一匹配提高整车燃油经济性 总被引:1,自引:0,他引:1
燃油经济性是载货汽车最重要的性能指标之一。选用具有代表性的几台样车,进行等速行驶燃油消耗量试验和多工况行驶燃油消耗量试验,对试验数据进行对比分析和理论计算,得到不同传动比对整车燃油经济性的影响,并据此设计了几种较为合适的传动系匹配方案,以满足不同用户的要求。 相似文献
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H. S. Wi Y. K. Lee J. I. Park J. H. Lee K. S. Park 《International Journal of Automotive Technology》2009,10(6):771-776
This paper focuses on fuel economy improvement according to the type of power steering system. Usually, a conventional power
steering system is directly driven by the crankshaft of the engine with a belt, known as HPS (hydraulic power steering). However,
there is some inefficiency with this system at high engine speeds. To improve this inefficiency, automobile makers have developed
two power steering systems: EHPS (electro-hydraulic power steering) and MDPS (motor-driven power steering) or EPS (electric
powered steering). However, there has been insufficient study of effects of the type of power steering system on fuel economy.
In this paper, the effect of the type of power steering system on fuel economy is studied experimentally, and calculations
of the effect on vehicle fuel economy are presenting using computer simulation with AVL cruise software. The results demonstrate
that a 1% vehicle fuel economy improvement can be achieved in a vehicle with an electro-hydraulic power steering system compared
to a vehicle with a hydraulic power steering system. In addition, a 1.7% vehicle fuel economy improvement can be achieved
using a full electric power steering system in a FTP-75 driving cycle. These results could be used to choose a power steering
system. 相似文献
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