摘要
运用仿真方法研究汽油发动机汽车(简称汽油车)受海拔的影响,并选配增压系统对其实现动力恢复,可为乘用车的高原适用性提供依据。基于GT-Suite仿真平台建立汽油车动力性评价模型,在变海拔工况下分析其动力性的变化规律。针对不同海拔下动力损失特征,对所选配的增压系统采用不同控制策略实现恢复作用。结果表明:海拔条件对汽油车加速性能影响最为显著,3 000 m以上地区的原地起步百公里加速时间增加49. 6%以上;选配增压系统后,通过对废气旁通阀开度的标定,实现变海拔条件下进气控制策略,满足了海拔4 000 m内汽油车动力基本不变的目标,为汽油车高原动力恢复提供参考。
The simulation method is used to study the influence of the gasoline engine vehicle by the change of altitude.The power recovery of the supercharging system can be used to provide the basis for the plateau applicability of the passenger vehicle.Based on the GT-Suite simulation platform,the dynamic evaluation model of gasoline vehicle was established,and its dynamic change rule was analyzed under variable altitude condition.According to the characteristics of dynamic loss at different altitudes,different control strategies were used to the supercharging system to restore power performance.The results show that the acceleration performance of the gasoline vehicle is most significant,and the 100 km acceleration time of gasoline vehicle is increased by more than 49.6% when the altitude above 3000m.After the selection of the turbocharging system,the intake control strategy under the condition of variable altitude is realized by calibrating the opening of the exhaust gas bypass valve,and the power of the gasoline vehicle is basically unchanged within the altitude of 4000m.This study can provide reference for the plateau power performance recovery of gasoline vehicles.
作者
张璐璐
马其华
张东剑
闫业翠
ZHANG Lulu;MA Qihua;ZHANG Dongjian;YAN Yecui(School of Automotive Engineering,Shanghai University of Engineering Science,Shanghai 201620,China)
出处
《重庆理工大学学报（自然科学）》
CAS
北大核心
2018年第12期38-45,共8页
Journal of Chongqing University of Technology：Natural Science
基金
2018年度中央高校基本科研业务费学科交叉(理工科)重点计划项目(18D110320)
关键词
汽油车
变海拔
GT-Suite
动力性恢复
增压系统
gasoline vehicle
the change of altitude
GT-Suite
power performance recovery
turbocharging system
