Supervisory control algorithm design of a 48v 4wd hybrid electric vehicle with fuel efficiency analysis

Kiyun Jeong, Seongmin Ha, Hyeongcheol Lee

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Presented in this paper is a 48 V-powernet-based powertrain structure with a front-wheel drive system that includes an engine and a 48 V BSG and a rear-wheel drive system driven by a traction motor without a mechanical link to the front-drive axle. The power distribution algorithm of the hybrid supervisory controller includes an electric drive mode by the rear-wheel drive motor as well as a hybrid electric control mode between the engine and the two drive motors. The results of the fuel economy simulation for the 4 WD 48 V mild hybrid system that was performed in the study are presented in this paper, along with the results of the analysis of the varying of the capacity of the rear-drive motor from 5 to 15 kW. The fuel efficiency improvement of the front engine is also compared with that of the BSG. This paper introduces a power distribution algorithm for the mild hybrid drive system model, and presents a design guideline for selecting the capacity of the rear-drive motor based on the simulation results for fuel economy and efficiency improvement.

Original languageEnglish
Pages (from-to)131-141
Number of pages11
JournalTransactions of the Korean Society of Automotive Engineers
Volume26
Issue number1
DOIs
StatePublished - 2018 Jan 1

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Hybrid vehicles
Wheels
Fuel economy
Engines
Drive axles
Front axles
Traction motors
Electric drives
Powertrains
Hybrid systems
Controllers

Keywords

  • 4 Wheel drive
  • 48V system
  • Belt driven Starter Generator(BSG)
  • Fuel efficiency
  • Mild hybrid electric vehicle

Cite this

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abstract = "Presented in this paper is a 48 V-powernet-based powertrain structure with a front-wheel drive system that includes an engine and a 48 V BSG and a rear-wheel drive system driven by a traction motor without a mechanical link to the front-drive axle. The power distribution algorithm of the hybrid supervisory controller includes an electric drive mode by the rear-wheel drive motor as well as a hybrid electric control mode between the engine and the two drive motors. The results of the fuel economy simulation for the 4 WD 48 V mild hybrid system that was performed in the study are presented in this paper, along with the results of the analysis of the varying of the capacity of the rear-drive motor from 5 to 15 kW. The fuel efficiency improvement of the front engine is also compared with that of the BSG. This paper introduces a power distribution algorithm for the mild hybrid drive system model, and presents a design guideline for selecting the capacity of the rear-drive motor based on the simulation results for fuel economy and efficiency improvement.",
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Supervisory control algorithm design of a 48v 4wd hybrid electric vehicle with fuel efficiency analysis. / Jeong, Kiyun; Ha, Seongmin; Lee, Hyeongcheol.

In: Transactions of the Korean Society of Automotive Engineers, Vol. 26, No. 1, 01.01.2018, p. 131-141.

Research output: Contribution to journalArticle

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N2 - Presented in this paper is a 48 V-powernet-based powertrain structure with a front-wheel drive system that includes an engine and a 48 V BSG and a rear-wheel drive system driven by a traction motor without a mechanical link to the front-drive axle. The power distribution algorithm of the hybrid supervisory controller includes an electric drive mode by the rear-wheel drive motor as well as a hybrid electric control mode between the engine and the two drive motors. The results of the fuel economy simulation for the 4 WD 48 V mild hybrid system that was performed in the study are presented in this paper, along with the results of the analysis of the varying of the capacity of the rear-drive motor from 5 to 15 kW. The fuel efficiency improvement of the front engine is also compared with that of the BSG. This paper introduces a power distribution algorithm for the mild hybrid drive system model, and presents a design guideline for selecting the capacity of the rear-drive motor based on the simulation results for fuel economy and efficiency improvement.

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KW - 4 Wheel drive

KW - 48V system

KW - Belt driven Starter Generator(BSG)

KW - Fuel efficiency

KW - Mild hybrid electric vehicle

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