面向高速工况的混合动力卡车预见性节能算法

doi:10.13229/j.cnki.jdxbgxb.20221388

Abstract

Abstract:

In the process of long-distance cargo transportation of heavy truck， the main driving condition of the vehicle is the high-speed cruising condition with little change in speed range. In order to further improve the fuel saving rate of the vehicle under this condition， a predictive energy saving algorithm with the objective of minimizing engine fuel consumption is proposed， which takes the P2 configuration single-axle parallel hybrid truck as the research object. Based on the change of road slope in front of the vehicle， considering the influence of speed change and energy distribution on fuel consumption， the vehicle speed and battery SOC are regarded as system state variables， and the global optimal future vehicle speed trajectory and energy distribution rules for the current road are determined by dynamic programming algorithm. It has been verified that the speed planning and energy distribution results obtained by the predictive energy saving algorithm are reasonable， and the fuel saving rates of hybrid truck with predictive energy saving algorithm are 3.19% and 6.26%， respectively compared with hybrid truck using dynamic programming algorithm under cruise control system （CCS） and pure fuel truck under predictive cruise control （PCC）.

Key words: vehicle engineering, hybrid electric truck, predictive energy saving algorithm, vehicle speed planning, energy management strategy

CLC Number:

U461.8

Yu-hai WANG,Xiao-zhi LI,Xing-kun LI. Predictive energy saving algorithm for hybrid electric truck under high-speed condition[J].Journal of Jilin University(Engineering and Technology Edition), 2024, 54(8): 2121-2129.

Figures/Tables 16

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对比项	路段编号	行驶里程 /km	平均车速 /（km·h^-1）	总油耗 /L	百公里油耗 /［L·（100 km）^-1］
仿真计算	1	16.00	86.6	5.26	32.88
实车实验	1	16.00	86.6	5.3	33.13
仿真计算	2	17.10	81.7	5.52	32.28
实车实验	2	17.10	81.7	5.5	32.16

对比项	路段编号	行驶里程/km	平均车速 /（km·h^-1）	电池SOC 初值/%	电池SOC 终值/%	总油耗 /L	百公里油耗/ ［L·（100 km）^-1］
预见性节能算法	1	19.15	79.8	50	50	5.88	30.70
混动车CCS	1	19.15	80.1	50	50	6.05	31.59
燃油车PCC	1	19.15	80.4	-	-	6.25	32.64
预见性节能算法	2	20.00	79.7	50	50	6.23	31.15
混动车CCS	2	20.00	80.1	50	50	6.46	32.30
燃油车PCC	2	20.00	80.2	-	-	6.67	33.35

Predictive energy saving algorithm for hybrid electric truck under high-speed condition

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