Experimental Investigation of Hydrous Ethanol Gasoline on Engine Noise, Cyclic Variations and Combustion Characteristics

Zhenbin Chen, Jiaojun Deng, Haisheng Zhen, Chenyu Wang and Li Wang
Additional contact information
Zhenbin Chen: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Jiaojun Deng: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Haisheng Zhen: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Chenyu Wang: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China
Li Wang: Mechanical and Electrical Engineering College, Hainan University, Haikou 570228, China

Energies, 2022, vol. 15, issue 5, 1-17

Abstract: Nowadays, the noise pollution of internal combustion engines is a very important factor influencing human health and is the main noise source of urban environmental noise. Additionally, the main source of gasoline engine noise consists of combustion noise in the cylinder, where the combustion noise is influenced by the combustion processes within the combustion chamber, especially the cyclic variation in the engine combustion. Thus, the inter-relationship between engine noise, cyclic variation and combustion is of great interest to be explored. Moreover, despite the environmental advantages of clean energy, the impact of different fuels on the internal combustion engine’s noise emissions cannot be ignored. As a result, in this work, three blends were prepared and used as test fuels, namely pure gasoline (E0), 10% hydrous ethanol (E10W) and 20% hydrous ethanol (E20W) by volume, accompanied by engine operating at a steady speed of 2000 r/min under various loads. The experimental results show that lower engine noise was observed for both E10W and E20W compared to E0. Upon the addition of hydrous ethanol, the peak in-cylinder pressure increased while the maximum pressure rise rate (( dp/dφ ) max ) decreased at the low and medium loads. Furthermore, the coefficients of variation in indicated mean effective pressure ( COV imep ) and COV ( dp/dφ ) max for the two blended fuels were higher than those for pure gasoline. Compared with those of E20W, E10W has lower COV imep and COV ( dp/dφ ) max at low and medium loads. The ( dp/dφ ) max and noise emission have a positive relation when the engine is fueled with the hydrous ethanol–gasoline blends, whereas the cyclic variation parameters vary in the opposite direction of the noise emission level for all the blend mixtures. Moreover, ( dp/dφ ) max has an essential effect on the combustion noise from a gasoline engine.

Keywords: hydrous ethanol gasoline; noise emissions; cycle-by-cycle variations; combustion characteristics; spark ignition engine (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2022
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/15/5/1760/pdf (application/pdf)
https://www.mdpi.com/1996-1073/15/5/1760/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:15:y:2022:i:5:p:1760-:d:759757

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().