Impact of Reformed Ethanol on the Volumetric Efficiency in I.C. Engines

Event
International Powertrains, Fuels & Lubricants Meeting
Authors Abstract
Content
This article presents a set of formulas for estimating the impact of reformed ethanol fuel on volumetric efficiency in I.C. engines. Both partial and complete usages of reformed ethanol fuel are discussed.
Analysis suggests that volumetric efficiency drastically decreases as the level of fuel reforming increases in S.I. engines. Such impact on volumetric efficiency is reduced when the reformed fuel is partially used in diesel engines.
A formula for calculating the impact of intake air temperature variation on volumetric efficiency is also presented. This formula is validated against engine simulation on factors such as engine load, speed, displacement, intake air temperature and reformed fuel temperature.
Validation results show a maximum of 0.5% error, indicating an accurate approximation and hence high feasibility of this formula.
The calculation predicts a decrease of 3-7% in volumetric efficiency caused by temperature variation due to high temperature reformed ethanol fuel, which is consistent with engine simulations.
Meta TagsDetails
DOI
https://doi.org/10.4271/2010-01-1465
Pages
10
Citation
Dong, J., Gesheng, L., Yue, Z., and Liang, Z., "Impact of Reformed Ethanol on the Volumetric Efficiency in I.C. Engines," SAE Int. J. Fuels Lubr. 3(2):38-46, 2010, https://doi.org/10.4271/2010-01-1465.
Additional Details
Publisher
Published
May 5, 2010
Product Code
2010-01-1465
Content Type
Journal Article
Language
English