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Research Papers: Fuel Combustion

Models and Analysis of the Pressure Field for a Hybrid Electric Vehicle With a Fuel Vapor-Containment System in a Refueling Process

[+] Author and Article Information
Yanyue Fang

School of Automotive and Traffic Engineering,
Vehicle Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: 2211604009@stmail.ujs.edu.cn

Ren He

School of Automotive and Traffic Engineering,
Vehicle Engineering,
Jiangsu University,
Zhenjiang 212013, China
e-mail: heren1962@163.com

Baowei Fan

School of Energy and Power Engineering,
Engineering Thermophysics,
Jiangsu University,
Zhenjiang 212013, China
e-mail: tsww1919@163.com

1Corresponding author.

Contributed by the Internal Combustion Engine Division of ASME for publication in the Journal of Energy Resources Technology. Manuscript received December 3, 2018; final manuscript received March 25, 2019; published online April 9, 2019. Assoc. Editor: Dr. Avinash Kumar Agarwal.

J. Energy Resour. Technol 141(9), 092202 (Apr 09, 2019) (7 pages) Paper No: JERT-18-1868; doi: 10.1115/1.4043339 History: Received December 03, 2018; Accepted March 28, 2019

In order to ensure and improve the performance of the fuel vapor-containment system (FVS) on a hybrid electric vehicle (HEV), the vapor pressure field of the evaporative (EVAP) system in the refueling process was analyzed. Numerical models were established to describe the pressure change in the EVAP system. Based on these numerical models, the influences of refueling speed, filler pipe diameter, vent pipe diameter, and fuel vapor-containment valve (FVV) port diameter on pressure change were discussed. The numerical models and the influences of aforementioned effects were validated by experiments. Simulation and experimental results indicated that the vapor pressure field in the EVAP system is more susceptible to the change of refueling speed and FVV port diameter. If the refueling speed increased and the FVV port diameter decreased, the vapor pressure in the EVAP system strongly fluctuated. Furthermore, results also show that the FVV port diameter should be as large as possible but less than 20 mm, while refueling speed should be 50 l/min. The filler pipe diameter can be chosen in the range of 23–28 mm.

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Figures

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Fig. 2

The geometry model of the EVAP system equipped with an ORVR system

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Fig. 1

EVAP system with an ORVR system

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Fig. 8

Vapor pressure in the EVAP system under different refueling speeds

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Fig. 9

Vapor pressure in the EVAP system under different vent pipe diameters

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Fig. 10

Vapor pressure in the EVAP system under different filler pipe diameters

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Fig. 11

Vapor pressure in the EVAP system under different FVV port diameters

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Fig. 3

Experimental process

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Fig. 4

The installation of refueling and data acquisition machine: (a) inner structure and (b) metal plug

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Fig. 5

The installation of vent pipes with different diameters: (a) 10 mm vent pipe and (b) 15 mm vent pipe

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Fig. 6

The connection of the filler pipe and the EVAP system on ordinary gasoline vehicles and HEV: (a) ordinary gasoline vehicles and (b) HEV

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