摘要
针对混动台架背压测试的一致性问题,对影响系统台架背压的因素进行敏感性研究。通过分析多变量因素并进行交叉试验验证,通过对测试数据的分析发现,在台架上进行1个循环的发动机外特性测试后背压上升值≥10kPa,1个GPF再生循环背压降低值≥6kPa,动力总成耐久台架对背压的影响高达近10kPa,发动机选型方案的差异对背压影响约(5~10)kPa,标定数据影响达4kPa,台架背压对以上因素具有高敏感性。研究结果表明,针对背压高敏感性因素制定测试边界条件对测试数据的准确性至关重要。
Aiming at the consistency of the back pressure of the hybrid bench,the sensitivity of the factors affecting the back pressure of the system was studied.The influence factors are analyzed and verified by cross test.The test data prove that the back pressure rise≥10kPa and the back pressure reduction value≥6kPa of one cycle of engine external characteristic test on the bench,the impact of powertrain durability bench on the back pressure is up to nearly 10kPa,the difference of engine selection scheme on the back pressure is about(5~10)kPa,and the impact of calibration data is up to 4kPa.Bench back pressure is highly sensitive to the above factors.The verification results show that it is very important to establish a unified test boundary condition for high sensitivity factors of back pressure.
作者
谢志清
黄小青
黄勇和
杨洪
黄名宗
林尚锦
Xie Zhi-qing;Huang Xiao-qing;Huang Yong-he;Yang Hong;Huang Ming-zong;Lin Shang-jin(Saic-GM-Wuling Automobile Co.,Ltd,Guangxi Liuzhou 545000;Leadrive Technology(Liuzhou)Co.,Ltd,Guangxi Liuzhou 545003)
出处
《内燃机与配件》
2024年第17期9-11,共3页
Internal Combustion Engine & Parts
基金
广西科技重大专项(广西新能源实验室项目),(项目编号:桂科AA23062058)。
关键词
背压
敏感性
台架
验证
多变量
Back pressure
Sensitivity
Bench-Test
Verification
Multivariable
