基于混合动力汽车动力性的模拟计算

Analog computation of dynamic quality based on hybrid electric vehicle

混合动力汽车的研发是缓解资源和环境问题的一个途径。动力性是汽车各种性能中最基本、最重要的性能,因而,在研发的过程中需要对汽车的动力性进行评价。目前,对这方面的的研究不多。根据试验数据,运用曲面拟合和二次拟合的方法,建立了发动机和电机的模型,根据汽车驱动原理,计算了混合动力汽车在纯电机、纯发动机及混合驱动模式下的动力性的各项指标,包括最高车速、加速度、最大爬坡度等,评价了混合动力汽车的动力性,该汽车达到了动力性的设计要求。运用这种方法可以对汽车的动力性进行预测,有利于前期系统部件的选型工作。

The researching of the hybrid vehicle is a approach to resolve the resource and environ-mental problem.Since the dynamic quality is the most basic and important of all kinds of performances,e-valuation to dynamic quality of the vehicle is necessary during the researching and developing period.How-ever the research of this aspect is less at present.Model of engine and motor is established based on experi-mentation data by applying surface fitting and quadratic fitting.And all performance index of the HEV on dynamic quality under different driving mode such as pure motor,pure engine and hybrid is calculated in-cluding maximum speed,acceleration and maximum gradient and so on.In addition the dynamic quality of hybrid vehicle is evaluated,which may satisfy the design requirement.The application of this method can al-so forecast the dynamic quality of the hybrid electric vehicle,which will facilitate for choosing components of the hybrid electric vehicle during the first phase.