船用醇柴双燃料发动机推进特性试验研究

doi:10.3969/j.issn.1004-132X.2025.11.035

摘要/Abstract

摘要：

为了探明船用甲醇动力的特性并为建模仿真研究提供校核数据，对一台船用甲醇-柴油双燃料发动机进行了推进特性试验，对比了发动机在纯柴油模式以及双燃料模式下的经济性、燃烧性能及排放性能。研究结果表明，甲醇的加入对发动机的等效燃料消耗量影响较小，但同工况下最多可以降低18.22%的单位功成本；甲醇的加入会导致各工况点下的燃烧持续期缩短、平均有效压力降低；双燃料模式下发动机的CO与HC排放均高于柴油模式，双燃料模式下的NO _x 排放仅在高负荷时略高于柴油模式。

关键词: 船用甲醇动力, 推进特性, 经济性, 燃烧性能, 排放性能

Abstract:

In order to investigate the characteristics of marine methanol powers and provide calibration data for modeling simulation studies， a marine methanol-diesel dual fuel engine was subjected to propulsion characteristics tests. The economy， combustion performance and emission performance of the engines were compared under pure diesel mode and dual fuel mode. The results show that the addition of methanol has a small effect on the equivalent fuel consumption of the engines， but it may reduce the unit power cost by 18.22% at most under the same operating conditions； the addition of methanol leads to the shortening of the combustion duration and the reduction of the average effective pressure at each operating point； the CO and HC emissions of the engines under the dual-fuel mode are higher than those of under the diesel mode， and the NO _x emissions under dual-fuel mode are slightly higher than those of the diesel mode only at high loads.

Key words: marine methanol power, propulsion characteristic, economy, combustion performance, emission performance

中图分类号:

TK464

宋恩哲, 郭宗伟, 杨添, 卢莉莉, 姚崇, 辛强之, 贾宝富. 船用醇柴双燃料发动机推进特性试验研究[J]. 中国机械工程, 2025, 36(11): 2766-2773.

Enzhe SONG, Zongwei GUO, Tian YANG, Lili LU, Chong YAO, Qiangzhi XIN, Baofu JIA. Experimental Study of Propulsion Characteristics of Marine Methanol⁃Diesel Dual⁃fuel Engines[J]. China Mechanical Engineering, 2025, 36(11): 2766-2773.

导出引用管理器 EndNote|Ris|BibTeX

链接本文: https://www.cmemo.org.cn/CN/10.3969/j.issn.1004-132X.2025.11.035

https://www.cmemo.org.cn/CN/Y2025/V36/I11/2766

图/表 16

图1 甲醇喷射系统安装示意图

Fig.1 Installation diagram of methanol injection system

表1 发动机主要参数

Tab.1 Engine parameters

发动机型式	直列、四冲程、涡轮增压
气缸数量	8
缸径×冲程/mm×mm	180×210
额定功率/kW	800
额定转速/（r·min^-1）	1500
压缩比	15∶1
单缸排量/L	5.34

图2 船用甲醇/柴油双燃料发动机试验台架示意图

Fig.2 Schematic diagram of test bench for marine methanol / diesel dual fuel engine

图3 试验台架及测控系统

Fig.3 Test bench and measurement and control system

图4 NTE推进特性排放测试区间

Fig.4 NTE propulsion characteristic emission test interval

表2 发动机主要参数

Tab.2 Engine main parameters

负荷/%	转速/ （r·min^-1）	扭矩/ （N·m）	功率/kW	替代率/%
25	945	2021.2	200	38.25
50	1200	3183.3	400	48.70
75	1365	4197.6	600	30.19
90	1440	4775.0	720	18.44
100	1500	5093.3	800	4.87

图5 两种模式下等效燃料消耗量、燃料消耗量以及替代率的对比

Fig.5 Comparison of equivalent fuel consumption， fuel consumption and substitution rate in two modes

图6 两种模式下燃料消耗率与燃料成本率对比

Fig.6 Comparison of fuel consumption rates and fuel cost rates under the two modes

图7 有效热效率对比

Fig.7 Comparison of effective thermal efficiency

图8 两种模式下的最大缸压及其对应的曲轴转角

Fig.8 Maximum cylinder pressure under two modes and the corresponding crank angles

图9 平均有效压力对比

Fig.9 Comparison of average effective pressure

图10 燃烧状态参数对比

Fig.10 Comparison of combustion state parameters

图11 燃烧持续期对比

Fig.11 Comparison of combustion duration

图12 两种模式下CO2、CO以及HC的排放对比

Fig.12 Comparison of CO2， CO and HC emissions under the two modes

图13 含碳气体排放对比

Fig.13 Comparison of carbon-containing gas emissions

图14 两种模式下NO x 与O2的排放对比

Fig.14 Comparison of NO x and O2 emissions in the two modes

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