HC and CO emissions of premixed low-temperature combustion fueled by blends of diesel and gasoline
HC and CO emissions of premixed low-temperature combustion fueled by blends of diesel and gasoline
复制标题
柴油和汽油混合物预混低温燃烧的 HC 和 CO 排放
DOI：
10.1016/j.fuel.2012.04.010
复制
发表时间：
2012-09-01
期刊：
影响因子：
7.4
通讯作者：
Assanis, Dennis N.
中科院分区：
文献类型：
--
作者：
Han, Dong;Ickes, Andrew M.;Assanis, Dennis N.
研究了柴油和汽油混合燃料在预混低温燃烧模式下的HC和CO排放特性。在一台单缸直喷柴油机上进行了试验，研究了汽油比例和EGR率、进气压力和喷油压力等控制参数对低温预混燃烧方式下HC和CO排放的影响。研究发现，燃料成分和发动机参数的变化影响点火延迟和总当量比，这是密切相关的HC和CO排放，分别。延长滞燃期的方法，如增加EGR率、增加混合燃料中汽油的比例、降低进气压力等，都会导致HC排放增加。相比之下，在大多数情况下，CO排放量占主导地位的全球当量比，这主要是由EGR和进气压力的调整。(C)2012爱思唯尔有限公司保留所有权利。
HC and CO emissions in a premixed low-temperature combustion mode fueled by blends of diesel and gasoline are investigated in this study. Tests were conducted on a single-cylinder direct-injection diesel engine, with gasoline proportion in fuel blends and engine control parameters (EGR rate, intake pressure and injection pressure) adjusted to investigate their influences on HC and CO emissions of this premixed low-temperature combustion mode. It is found that changes in fuel composition and engine parameters affect ignition delay and global equivalence ratio, which are closely tied to HC and CO emissions, respectively. The methods that extend ignition delay, such as increasing EGR rate, increasing gasoline proportion in fuel blends, or reducing intake pressure, cause increased HC emissions. In contrast, for most cases, CO emissions are dominated by global equivalence ratio, which is mainly adjusted by EGR and intake pressure. (C) 2012 Elsevier Ltd. All rights reserved.