Effect of diesel blended with di-n-butyl ether/1-octanol on combustion and emission in a heavy-duty diesel engine. (15th October 2022)

• Record Type: Journal Article
• Authors: Wang, Jinglan; Sun, Lifang; Luan, Pengpeng; Wu, Yangyi; Cheng, Zhanjun; Zhang, Zhao; Kong, Xiangen; Liu, Haifeng; Chen, Guanyi
• Is Part Of: Environmental pollution. Volume 311(2022)
• Publication Date: 2022-10-15
• Subjects: Butyl ether -- Octanol -- Diesel engine -- Combustion -- Emission; Pollution -- Periodicals; Pollution -- Environmental aspects -- Periodicals; Environmental Pollution -- Periodicals; Pollution -- Périodiques; Pollution -- Aspect de l'environnement -- Périodiques; Pollution -- Effets physiologiques -- Périodiques; Pollution; Pollution -- Environmental aspects; Periodicals; Electronic journals; 363.73
• DOI: 10.1016/j.envpol.2022.119976
• Languages: English
• ISSNs: 0269-7491

Abstract

Abstract: Two kinds of C8 isomers, di- n -butyl ether (DNBE) and 1-octanol, as potential oxygen-containing alternative fuels, show important value in the trade-off between efficiency and emission. In the present work, the effects of DNBE/1-octanol with different proportions (0, 10%, and 20%) blended into diesel on the combustion characteristics, fuel economy, and emission characteristics in a six-cylinder heavy-duty diesel engine were studied at low, medium, and high loads. 1-Octanol with a 20% blending ratio showed different combustion characteristics in the cylinder compared with the other fuels. The economic analysis showed that the brake specific fuel consumption of DNBE–diesel blend fuels was higher than that of 1-octanol–diesel blend fuels, while brake thermal efficiency was the opposite tendency. The emissions of nitrogen oxides (NOx), hydrocarbons (HC), and carbon monoxide (CO) were affected by the types of blend fuels, blending ratios, and loads. In comparison with 1-octanol–diesel blend fuels, the addition of DNBE in diesel promoted the emission of nitrogen oxides, but inhibited the emissions of soot, HC, and CO. DNBE– and 1-octanol–diesel blend fuels increased the weighted brake specific fuel consumption but decreased the weighted brake thermal efficiency compared with diesel in the World Harmonized Stationary Cycle test cycle of Euro VI regulation. The weighted NOx, HC, soot, and CO emissions of blend fuels depended on the types of blend fuels and blend ratios. The weighted NOx, HC, and soot emissions were reduced by blending 1-octanol into diesel, while the weighted CO emission was increased. The weighted CO and soot emissions of diesel blended with DNBE were reduced than that of diesel. Graphical abstract: Image 1 Highlights: The combustion of DNBE/1-octanol-diesel blends are performed in the diesel engine. Fuel economy, performance and emissions of blends are compared and analyzed. DNBE–diesel blends have a higher BSFC than 1-octanol blends, while BTE is opposite. DNBE–diesel blends inhibit soot, HC, and CO emissions but promote NOx emission.