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Effects of Test Conditions on Fuel Economy of Gasoline-Powered Vehicle

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Abstract

In this study, the influence on fuel economy testing of gasoline-powered vehicles is evaluated for various test conditions (e.g., laboratory temperature, soaking time, cooling fan, battery charge state, and driving mode tracking). It showed a difference in fuel economy results of approximately 3 % between low (88 %) and high (99 %) battery state of charge conditions because the alternator saving function has a positive effect on fuel economy. Fuel economy testing with laboratory temperature changes gave a slight reduction at 21 °C and slight increase at 29 °C. The cooling fan changes had an almost negligible effect on fuel consumption. The largest fuel economy result varied by 5.2 % in the soft, standard, and rough driving conditions.

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Abbreviations

ASCR:

absolute speed change rating, %

DR:

distance rating, %

EER:

energy economy rating, %

EPA:

environmental protection agency in US

ER:

energy rating, %

FTP:

EPA federal test procedure

HWFET:

EPA highway fuel economy test cycle

OBD II:

on-board diagnostic system

SAE:

society of automotive engineers

SOC:

state of charge, %

UDDS:

urban dynamometer driving schedule

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Correspondence to Sungwook Park.

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Kwon, S., Kang, M., Seo, Y. et al. Effects of Test Conditions on Fuel Economy of Gasoline-Powered Vehicle. Int.J Automot. Technol. 19, 253–261 (2018). https://doi.org/10.1007/s12239-018-0024-1

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  • DOI: https://doi.org/10.1007/s12239-018-0024-1

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