Investigation on combustion characteristics of cyclopentanol/diesel fuel blends in an optical engine

Hao Chen, Xin Su, Jingjing He, Peng Zhang, Hongming Xu and Chenglong Zhou

Renewable Energy, 2021, vol. 167, issue C, 811-829

Abstract: Cyclopentanol is a promising alternative biofuel for automobiles. In this study, an optical engine was employed to investigate the effects of cyclopentanol blending ratios on combustion characteristics. Cyclopentanol was blended with diesel by 10% and 20% volume, denoted as CP10 and CP20, respectively. Comparison tests between blends and diesel (denoted as D100) were performed under three injection pressures (100, 120, and 140 MPa) and four injection timings (−6°, −9°, −12° and −15° crank angle after top dead center (°CA ATDC)). The experimental results indicated that the addition of cyclopentanol prolongs the ignition delay, shortens the combustion duration and improves the indicated thermal efficiency. As the injection pressure increases or the injection timing advances, the peak combustion pressures (PCPs) and peak heat release rates (PHRRs) increase. Compared to D100, the PCPs and PHRRs of cyclopentanol/diesel fuel blends are lower and decrease with the increase of cyclopentanol ratio. Blending cyclopentanol in diesel is effective in reducing soot emission, and the reduction effect weakens as the injection pressure increases or the injection timing advances. CP10 is superior to CP20 according to the comprehensive evaluation of combustion and emission, especially at the injection timing of −12°CA ATDC under the injection pressure of 140 MPa.

Keywords: Cyclopentanol; Combustion; Injection pressure; Injection timing; Optical engine (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (10)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:renene:v:167:y:2021:i:c:p:811-829

DOI: 10.1016/j.renene.2020.11.155

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