| Engine-Start Control for a Hybrid Electric Vehicle with a P2/P3 Configuration |
| Wei Ren1,2, Juhua Huang1, Lei Zhang2, Ziyuan Mei2, Jinju Yin2 |
1School of Advanced Manufacturing, Nanchang University, Nanchang, 330031, China
2Product Engineering, Magna PT Powertrain (Jiangxi) Co., Ltd, 169 Meilin Street, Nanchang, 330031, China |
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Received: November 1, 2022; Revised: April 9, 2024 Accepted: May 17, 2025. Published online: July 10, 2025. |
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| ABSTRACT |
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This paper introduces a hybrid electric vehicle (HEV) with a dedicated hybrid transmission (DHT) with a P2/P3 configuration. During the driving mode transition from pure electric driving to engine driving alone, an engine disconnected clutch (EDC) or a P2 motor is employed to implement the engine-start process. Two control strategies are proposed to achieve a quick and comfortable engine-start process. An active damping control with torque compensation is designed to suppress the oscillations and maintain the driving acceleration during the engine start by the EDC. A torque-coordinated control is proposed to smoothly transfer the driving torque from the motor to the engine after synchronizing the engine with the driveline. A predictive global sliding mode control is designed to actively regulate the engine speed by the P2 motor during engine start, providing fast response speed, low static error, and robustness during the entire process. The driveline and control models are established in SIMULINK to simulate various driving cases. The results indicate that both control strategies can satisfy different driving situations for engine start with a low jerk and short duration, thus improving the driving quality during the engine-start process. |
| Key Words:
Hybrid electric vehicle · Engine start · Active damping control · Sliding mode control · Dedicated hybrid transmission |
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Corresponding Author.
Juhua Huang , Email. 
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