Optimized Design and Analysis of a Novel Multi-Mode Series-Parallel Hybrid Powertrain Chongqing University

Format:

Book

Conference/Event

Author/Creator:

Zhang, Yuxin, author.

Contributor:

Yang, Yalian

Zou, Yunge

Conference Name:

SAE 2024 Vehicle Powertrain Diversification Technology Forum (2024-12-06 : Xi'An, China)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2025

Summary:

To enhance energy efficiency of series-parallel hybrid system, this paper investigates and compares the effects of adding the gear ratio at different power source position on the performance of the vehicle. Firstly, the effect of adding gears at various positions is analyzed on the basis of intelligent multi-mode drive (IMMD) configuration, and the potential working modes resulting from the added gear ratios at different power source positions are examined. Secondly, multi-objective particle swarm optimization (MOPSO) algorithm is used to optimize the transmission ratio of new gears, laying the groundwork for comparing different configurations. Moreover, the fuel economy performance of the optimized series-parallel configuration was evaluated using a rapid dynamic programming approach with the objective function of minimizing fuel consumption during power transfer. Finally, in accordance with the aforementioned research, the acceleration performance and economic performance of different configurations were compared quantitatively. The comparative analysis shows that for series-parallel hybrid powertrain, increasing the driving motor direct drive gear had a significant effect on improving the dynamic performance, the 100 km acceleration time increased by 14.08%. increasing engine direct drive gear had a significant effect on improving the economy under urban dynamometer driving schedule (UDDS), the fuel consumption was reduced by 4.76% on average, increasing the engine and driving motor direct drive gears at the same time had a significant effect on improving the economy and dynamics, exhibiting a 20.63% improvement in acceleration and a 4.29% improvement in fuel economy under worldwide harmonized light vehicles test cycle (WLTC) cycle

Notes:

Vendor supplied data

Publisher Number:

2025-01-7025

Access Restriction:

Restricted for use by site license