压缩天然气汽车综合性能评价模型

Evaluation Model for Comprehensive Performance of CNGV

压缩天然气汽车(CNGV)具有良好的经济性和低污染性,但也存在动力性能下降、使用性能变差等问题,在评价主导燃料(汽油和柴油)汽车和天然气汽车的性能优劣时尚存争议。文章选取了模糊综合评判决策作为天然气汽车的综合性能评价方法,选定了评价指标,建立了评价模型,通过专家估测法确定了各指标的权重。并以桑塔纳SVW7180CEi型CNG/汽油两用燃料轿车为例,进行了天然气和汽油综合性能评价。结果表明,使用天然气燃料的汽车,其综合性能略优于使用汽油燃料的汽车。本评价模型对于其它型号、类型的CNG汽车,尤其是城市CNG出租车,有一定的参考价值。

Natural gas vehicle(NGV) has good economy and low pollution.There is controversy in performance evaluation for predominant fuel(gasoline and diesel) vehicle and the NGV.So it is necessary to build up a kind of model to evaluate the comprehensive performance of NGV.The fuzzy comprehensive assessing strategy is employed to evaluate the comprehensive performance of NGV and the evaluation model is created.The comprehensive performance of CNG/gasoline two-fueled(taxi) engine in SANTANA Model SVW7180CEi is evaluated by using this model,and a conclusion is drawn that the comprehensive performance of the vehicle using natural gas is slightly better than that of the vehicle using gasoline.The evaluation model can be used to other types of NGV,and is of practical value.