Title: Research on flexible and controllable starting strategy for commercial vehicle diesel range extender

Authors: Zhuo Zhang; Yuzhen Yuan; Zhiqiang Lin; Kang Song; Zhengsong Mao; Fahua Huang

Addresses: School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, No. 135 Yaguan Road, Jinnan District, Tianjin, China ' School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, No. 135 Yaguan Road, Jinnan District, Tianjin, China ' School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, No. 135 Yaguan Road, Jinnan District, Tianjin, China ' School of Electrical Engineering and Automation, Tianjin University, Tianjin 300072, No. 135 Yaguan Road, Jinnan District, Tianjin, China ' Yuchai Xinlan New Energy Power Technology Co., Ltd., Nanning 530007, No. 9, Ke Yuan Dong Shi Yi Road, High-Tech Zone, Nanning, Guangxi Zhuang Autonomous Region, China ' Yuchai Xinlan New Energy Power Technology Co., Ltd., Nanning 530007, No. 9, Ke Yuan Dong Shi Yi Road, High-Tech Zone, Nanning, Guangxi Zhuang Autonomous Region, China

Abstract: For range extender, engine starting conditions and boosting methods lead to varying oil film formation and pressure establishment durations, resulting in differences in optimal starting durations. This paper primarily addresses the control issue of range extender starting duration. Initially, it establishes and validates the dynamic model of the target range extender system, consisting of a four-cylinder diesel engine and a flywheel integrated starter generator (FISG). Subsequently, designing an adjustable and controllable target speed curve by polynomial splicing, and calibrates curve parameters by optimising vibration performance indicators. Based on the target speed curve, the motor torque is designed, with the torque corresponding to the speed primarily constructing the feedforward torque, supplemented by the feedback torque. Finally, the proposed starting control strategy is validated on the test bench, compared with the original strategy, and the impact of different control parameters on the starting control effect is analysed, confirming the effectiveness of the proposed strategy in achieving flexible and controllable starting times.

Keywords: hybrid electric vehicles; HEV; range extender; start processes.

DOI: 10.1504/IJPT.2024.144511

International Journal of Powertrains, 2024 Vol.13 No.4, pp.362 - 388

Received: 17 Feb 2024
Accepted: 26 Jul 2024
Published online: 17 Feb 2025 *

Full-text access for editors Full-text access for subscribers Purchase this article Comment on this article