基于性能带宽的发动机选型方法研究

Study on Engine Model Selection Method Based on Performance Bandwidth

按照一定的方法将乘用车划分为不同级别车型,收集整理每个级别在国内市场上销量较好的车型,统计这些车型的基本动力参数包括扭矩、功率、比扭矩、比功率等,得到各级别车型的动力参数分布范围。运用一定的统计分析方法,将动力参数分布范围转化为发动机性能带宽,基于不同级别车型的性能带宽以及备选发动机的基本动力参数,便可完成发动机的选型。

Passenger cars are divided into different level models according to certain methods, models which sell better in the domestic market in each level are collected, and basic dynamic parameters of these models including torque, power, specific torque, or specific power, etc., are made into statistics, then the dynamic parameters scatter range at all level models can be got. Using certain statistical analysis method, dynamic parameters scatter range can be converted to engine performance bandwidth. Based on the performance bandwidth of different level models and the basic dynamic parameters of alternative engines, the engine model selection can be completed.