Mass Impacts on Fuel Economies of Conventional vs. Hybrid Electric Vehicles
Mass Impacts on Fuel Economies of Conventional vs. Hybrid Electric Vehicles
复制标题
传统电动汽车与混合动力电动汽车对燃油经济性的重大影响
DOI：
10.4271/2004-01-0572
复制
发表时间：
2004
期刊：
影响因子：
--
通讯作者：
D. Santini
中科院分区：
文献类型：
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作者：
F. An;D. Santini
传统车辆（CV）的车辆重量和燃料经济性之间的强相关性被认为是常识，并且传统车辆（CV）的质量减少与燃料消耗减少的关系经常被引用，而不分离动力系统与车身（滑翔机）的影响，也不基于等效车辆性能水平。本文挑战的假设，这种关系很容易概括。此外，对于混合动力电动车辆（HEV），质量、性能和燃料消耗之间的关系与CV不同，并且随着混合动力类型而变化。对于全功能（全轮再生）混合动力车辆，其中电池组和电机具有足够的功率和能量存储，回收了非常大一部分动能，有效消除了发动机空转。本文从质量与燃油经济性的关系方面评估了从传统车辆转向混合动力车辆的两个重要影响-（1）燃油经济性的显着改善，质量变化很小或没有变化，以及（2）一旦切换到混合动力传动系统，相对于传统车辆，质量减少在改善燃油经济性方面的有效性将减少。在本文中，我们讨论了车辆牵引负载故障和混合动力对车辆效率的影响，讨论了通过再生制动将动能转换为电能来捕获动能，评估了当车辆不需要动力时关闭发动机的好处，并调查了与车辆质量相关的能量损失。«少
The strong correlation between vehicle weight and fuel economy for conventional vehicles (CVs) is considered common knowledge, and the relationship of mass reduction to fuel consumption reduction for conventional vehicles (CVs) is often cited without separating effects of powertrain vs. vehicle body (glider), nor on the ground of equivalent vehicle performance level. This paper challenges the assumption that this relationship is easily summarized. Further, for hybrid electric vehicles (HEVs) the relationship between mass, performance and fuel consumption is not the same as for CVs, and vary with hybrid types. For fully functioning (all wheel regeneration) hybrid vehicles, where battery pack and motor(s) have enough power and energy storage, a very large fraction of kinetic energy is recovered and engine idling is effectively eliminated. This paper assesses two important impacts of shifting from conventional to hybrid vehicles in terms of the mass vs. fuel economy relationship - (1) significant improvements in fuel economy with little or no change in mass, and (2) once a switch to hybrid powertrains has been made, the effectiveness of mass reduction in improving fuel economy will be diminished relative to conventional vehicles. In this paper, we discuss vehicle tractive load breakdowns and impacts of hybridization onmore » vehicle efficiency, discuss capture of kinetic energy by conversion to electrical energy via regenerative braking, assess benefits of shutting off the engine when the vehicle does not require power, and investigate energy losses associated with vehicle mass.« less