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Energies 2018, 11(1), 207; https://doi.org/10.3390/en11010207

Coordinated Engine-Start Control of Single-Motor P2 Hybrid Electric Vehicles with Respect to Different Driving Situations

1,2,3
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1,2,3
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4
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1,2,3,* and 5
1
School of Transportation Science and Engineering, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
2
Beijing Key Laboratory for High-efficient Power Transmission and System Control of New Energy Resource Vehicle, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
3
Dynavolt Tech. and Beihang University Joint Lab for New Energy Resource Vehicle Transmission Technology, Beihang University, 37 Xueyuan Road, Haidian District, Beijing 100191, China
4
Institute of Industrial and Automotive Drivetrains, Ruhr-University Bochum, 44801 Bochum, Germany
5
Beijing Institute of Space Launch Technology, 1 South Dahongmen Road, Fengtai District, Beijing 100076, China
*
Author to whom correspondence should be addressed.
Received: 27 October 2017 / Revised: 8 January 2018 / Accepted: 9 January 2018 / Published: 15 January 2018
(This article belongs to the Special Issue Methods to Improve Energy Use in Road Vehicles)
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Abstract

To cut down the costs caused by the additional starter, single-motor P2 hybrid electric vehicles (HEVs) make use of the driving motor to propel the vehicle as well as start the engine, and accordingly the engine-start control becomes more difficult. To satisfy the passengers’ demands, this paper developed different coordinated engine-start control strategies with respect to different situations. First, a detailed model for the single-motor P2 HEVs system was built and related parameters were presented. Then, the coordinated engine-start control architecture for the internal combustion engine (ICE), engine disconnect clutch (EDC), electric motor (EM) and 8-speed automatic transmission (AT) was analyzed. Considering with the different driving situations, soft start strategy and dynamical start strategy are individually proposed. Through the simulation, the above control strategies were validated in accordance with their control objectives. Last, to optimize the trade-off between driving performance and riding comfort, some key parameters were further discussed. This work not only decreases the difficulty of engine-start control in the single-motor P2 HEVs but also is helpful to improve the quality of engine-start. View Full-Text
Keywords: single-motor P2 hybrid electric vehicles (HEVs); coordinated engine-start control; soft start; dynamical start single-motor P2 hybrid electric vehicles (HEVs); coordinated engine-start control; soft start; dynamical start
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Xu, X.; Wu, X.; Jordan, M.; Dong, P.; Liu, Y. Coordinated Engine-Start Control of Single-Motor P2 Hybrid Electric Vehicles with Respect to Different Driving Situations. Energies 2018, 11, 207.

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