柴油机燃用F-T合成柴油时的燃烧与排放特性分析
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- 英文论文题名：An Analysis on Combustion and Emission Characteristics of a Diesel Engine Fuelled with F-T Synthetic Diesel Fuel
- 论文作者：孙万臣 ; 张曙光 ; 郭亮 ; 杜家坤 ; 范鲁艳 ; 李国良 ; 程鹏
- 英文论文作者：Sun Wanchen ; Zhang Shuguang ; Guo Liang ; Du Jiakun ; Fan Luyan ; Li Guoliang ; Cheng Peng ; Jilin University ; State Key Laboratory of Automotive Simulation and Control
- 年：2016
- 作者机构：吉林大学汽车仿真与控制国家重点实验室;
- 论文关键词：柴油机 ; 费托合成柴油 ; 燃烧 ; 微粒排放
- 英文论文关键词：diesel engine ; fischer-tropsch synthetic diesel fuel ; combustion ; particulate emission
- 会议召开时间：2016-10-26
- 会议录名称：2016中国汽车工程学会年会论文集
- 英文会议录名称：Proceedings of 2016 SAE-China Congress
- 语种：中文
- 分类号：U464.172
- 学会代码：QCGC
- 会议名称：2016中国汽车工程学会年会暨展览会
- 会议地点：中国上海
- 主办单位：中国汽车工程学会
- 学会名称：中国汽车工程学会
- 页数：1
- 文件大小：49k
- 原文格式：O
- 会议级别：全国
摘要
对一台增压中冷高压共轨的柴油发动机,燃用煤基费托合成柴油(F-T柴油)时的燃烧、排放特性和微粒粒度分布特征进行试验研究,分析了F-T柴油对发动机燃烧和排放的影响规律。结果表明,与国V柴油相比,燃用F-T柴油时因密度低,在喷油策略不做改变的情况下,转矩有所降低。同时,由于F-T柴油主要成分为直链烷烃,燃料着火性好,十六烷值较高,滞燃期明显缩短,预混合燃烧阶段放热量减少,燃烧时缸内温度降低,有利于降低NO_x排放。F-T柴油具有良好的燃烧特性,使CO、HC排放和消光烟度大幅降低。十三工况排放试验中,CO、HC和NO_x的加权比排放量分别降低了51.42%、45.62%和14.35%。不同负荷工况下微粒总数量浓度、超细微粒和核态微粒的比例均有所下降。所有这些对满足越来越严格的排放法规具有重要意义。
An experimental study on the combustion and emission characteristics and particulate size distribution feature of a turbocharged inter-cooled high-pressure common rail diesel engine fueled with coal-based Fischer-Tropsch synthetic diesel fuel(F-T diesel fuel) is conducted to analyze the effects of F- T diesel fuel on the combustion and emission of engine.The results show that compared with State-V diesel fuel,when F-T diesel fuel is used with the same injection strategy,engine torque reduces due to its lower density,meanwhile as its main constituent is straight- chain alkane,which increases its cetane number with good ignitability,the ignition delay period shortens,the heat release in premixed combustion stage reduces,and the combustion temperature in cylinder lowers,helping to reduce the emission of NO_x,and its good combustion characteristics make the emissions of CO and HC and smoke opacity greatly lower.With 13-mode test cycle,the weighted specific emissions of CO,HC and NO_x decrease by 51.42%,45.62%and 14.35%respectively,and under different load conditions the total number emission of particulates and the proportions of ultra- fine particulates and nucleation mode particulates totally reduce.All these have great significance in meeting increasingly stringent emission regulations.
An experimental study on the combustion and emission characteristics and particulate size distribution feature of a turbocharged inter-cooled high-pressure common rail diesel engine fueled with coal-based Fischer-Tropsch synthetic diesel fuel(F-T diesel fuel) is conducted to analyze the effects of F- T diesel fuel on the combustion and emission of engine.The results show that compared with State-V diesel fuel,when F-T diesel fuel is used with the same injection strategy,engine torque reduces due to its lower density,meanwhile as its main constituent is straight- chain alkane,which increases its cetane number with good ignitability,the ignition delay period shortens,the heat release in premixed combustion stage reduces,and the combustion temperature in cylinder lowers,helping to reduce the emission of NO_x,and its good combustion characteristics make the emissions of CO and HC and smoke opacity greatly lower.With 13-mode test cycle,the weighted specific emissions of CO,HC and NO_x decrease by 51.42%,45.62%and 14.35%respectively,and under different load conditions the total number emission of particulates and the proportions of ultra- fine particulates and nucleation mode particulates totally reduce.All these have great significance in meeting increasingly stringent emission regulations.
引文
(一)本书仅收录摘要,全文刊载在《汽车工程》(2016年第10期)。