Hydrous Ethanol Steam Reforming and Thermochemical Recuperation to Improve Dual-Fuel Diesel Engine Emissions and Efficiency

被引:7
|
作者
Hwang, Jeffrey T. [1 ]
Kane, Seamus P. [1 ]
Northrop, William F. [1 ]
机构
[1] Univ Minnesota, Dept Mech Engn, 2811 Weeks Ave SE, Minneapolis, MN 55414 USA
关键词
EXHAUST HEAT; COMBUSTION; PERFORMANCE; METHANOL;
D O I
10.1115/1.4043711
中图分类号
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号
0807 ; 0820 ;
摘要
Dual-fuel strategies can enable replacement of diesel fuel with low reactivity biofuels like hydrous ethanol. Previous work has shown that dual-fuel strategies using port injection of hydrous ethanol can replace up to 60% of diesel fuel on an energy basis. However, they yield negligible benefits in NOX emissions, soot emissions, and brake thermal efficiency (BTE) over conventional single fuel diesel operation. Pretreatment of hydrous ethanol through steam reforming before mixing with intake air offers the potential to both increase BTE and decrease soot and NOX emissions. Steam reforming can upgrade the heating value of the secondary fuel through thermochemical recuperation (TCR) and produces inert gases to act as a diluent similar to exhaust gas recirculation. This study experimentally investigated a novel thermally integrated steam reforming TCR reactor that uses sensible and chemical energy in the exhaust to provide the necessary heat for hydrous ethanol steam reforming. An off-highway diesel engine was operated at three speed and load settings with varying hydrous ethanol flow rates reaching fumigant energy fractions of up to 70%. The engine achieved soot reductions of close to 90% and minor NOX reductions; however, carbon monoxide and unburned hydrocarbon emissions increased. A first law energy balance using the experimental data shows that the developed TCR system effectively upgraded the heating value of the secondary fuel. Overall, hydrous ethanol steam reforming using TCR can lead to 23% increase in fuel heating value at 100% conversion, a limit approached in the conducted experiments.
引用
收藏
页数:8
相关论文
共 50 条
  • [21] Effects of injection timing on the engine performance and exhaust emissions of a dual-fuel diesel engine
    Sayin, Cenk
    Canakci, Mustafa
    ENERGY CONVERSION AND MANAGEMENT, 2009, 50 (01) : 203 - 213
  • [22] Effects of Gasoline-Ethanol Dual-Fuel Injection on Engine Emissions
    Zhuang Y.
    Chang J.
    Qian L.
    Qian Y.
    Neiranji Xuebao/Transactions of CSICE (Chinese Society for Internal Combustion Engines), 2021, 39 (02): : 114 - 122
  • [23] Effect of ethanol injection timing on ethanol-diesel dual-fuel engine performance
    Fang, Xianzhong
    Liu, Xunjun
    Jin, Wenhua
    Han, Yongqiang
    Nongye Jixie Xuebao/Transactions of the Chinese Society of Agricultural Machinery, 2007, 38 (11): : 22 - 25
  • [24] Experimental and numerical investigations on the cyclic variability of an ethanol/diesel dual-fuel engine
    Dong, Shijun
    Cheng, Xiaobei
    Ou, Biao
    Liu, Tangjun
    Wang, Zhaowen
    FUEL, 2016, 186 : 665 - 673
  • [25] Experimental investigation on the performance and emissions characteristics of ethanol/diesel dual-fuel combustion
    Lee, Jeongwoo
    Lee, Sunyoup
    Lee, Seokhwan
    FUEL, 2018, 220 : 72 - 79
  • [26] Combustion Model of a Dual-Fuel Diesel Engine
    Yao, Chong
    Tyulepberdinova, Gulnur
    Gu, Shengyu
    CHEMICAL ENGINEERING & TECHNOLOGY, 2021, 44 (06) : 1025 - 1032
  • [27] Experimental investigation of ethanol/diesel dual-fuel combustion in a heavy-duty diesel engine
    Han, Jinlin
    Somers, L. M. T.
    Cracknell, Roger
    Joedicke, Arndt
    Wardle, Robert
    Mohan, Vivek Raja Raj
    FUEL, 2020, 275
  • [28] The Impact of Water Injection and Hydrogen Fuel on Performance and Emissions in a Hydrogen/Diesel Dual-Fuel Engine
    Sharkey, Ashley
    Zare, Ali
    ENERGIES, 2024, 17 (23)
  • [29] A simulation of ethanol substitution rate and EGR effect on combustion and emissions from a high-loaded diesel/ethanol dual-fuel engine
    Wei, Zengna
    Zhang, Yuxin
    Xia, Qi
    Liu, Yichi
    Xu, Yuanli
    FUEL, 2022, 310
  • [30] Computational Investigation of Combustion, Performance, and Emissions of a Diesel-Hydrogen Dual-Fuel Engine
    Zhang, Bo
    Wang, Huaiyu
    Wang, Shuofeng
    SUSTAINABILITY, 2023, 15 (04)