杨靖,米林,李洋涛.内燃机瞬态特性对整车循环工况动力性和经济性的影响[J].内燃机工程,2018,39(2):59-65.
内燃机瞬态特性对整车循环工况动力性和经济性的影响
Effect of Engine Transient Characteristics on Vehicle'sDriving Cycle Power and Fuel Consumption
DOI：
关键词:瞬态特性  循环工况  万有特性  循环工况油耗
Key Words:transient characteristics  driving cycle  universal characteristics  driving cycle fuel consumption
基金项目:湖南省绿色汽车2011协同创新中心基金
作者单位
杨靖,米林,李洋涛 1.重庆理工大学 车辆工程学院，重庆 400054；2.滑铁卢大学 机械与机电工程学院，加拿大 滑铁卢 N2L3G1 
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摘要:针对用发动机稳态万有特性计算整车循环工况性能所存在的不足，选用一款汽油机摩托车进行研究和验证。通过运用整车循环工况的试验数据，在发动机动态台架上模拟循环工况测定了发动机的瞬态特性。根据对发动机瞬态特性分析对原机进行了相应改进，使发动机瞬态时混合气形成和燃烧过程得到了改善，加快了发动机瞬态响应频率。最终试验测试结果显示，在发动机稳态特性变化很小的情况下，瞬态特性改进后不仅使整车变工况时动力性略有提升，而且明显降低了整车循环工况百公里油耗。
Abstract:In order to solve the problem of using the engine steady state universal characteristics to calculate the vehicles driving cycle performance, the transient characteristics of a gasoline engine for motorcycle use were measured by simulating the vehicle driving cycle conditions on the engine dynamic bench. And then, the mixture formation and combustion process of the engine were improved under transient conditions, thus resulting in an increase in engines transient response frequency. Experimental results show that in the case of small changes in the steady state characteristics of the engine, the improvements of transient characteristics not only slightly enhance the vehicles dynamic property, but also significantly reduce the 100km fuel consumption in the vehicle driving cycle.
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