Influence of Multiple Injection on Combustion Characteristics of Methanol Direct-Injection Jet-Ignition Engines

KOU Hailiang; ZHAO Pengxi; DUAN Hao; YIN Xiaojun; HU Erjiang; ZENG Ke

doi:10.7652/xjtuxb202512012

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Influence of Multiple Injection on Combustion Characteristics of Methanol Direct-Injection Jet-Ignition Engines

更新时间：2025-12-08

- Influence of Multiple Injection on Combustion Characteristics of Methanol Direct-Injection Jet-Ignition Engines
- Journal of Xi'an Jiaotong University Vol. 59, Issue 12, Pages: 139-148(2025)
- 作者机构：
- 作者简介：
- 基金信息：
- DOI：10.7652/xjtuxb202512012
  CLC： TK431
- Received：18 June 2025，
  
  Published：10 December 2025
- 稿件说明：
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KOU Hailiang, ZHAO Pengxi, DUAN Hao, et al. Influence of Multiple Injection on Combustion Characteristics of Methanol Direct-Injection Jet-Ignition Engines[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 139-148.
DOI：

KOU Hailiang, ZHAO Pengxi, DUAN Hao, et al. Influence of Multiple Injection on Combustion Characteristics of Methanol Direct-Injection Jet-Ignition Engines[J]. Journal of Xi'an Jiaotong University, 2025, 59(12): 139-148. DOI： 10.7652/xjtuxb202512012.

摘要

为解决被动预燃室发动机稀燃能力不足的问题，基于一台缸内甲醇直喷、预燃室射流点火发动机展开试验研究，在过量空气系数为1.0～1.4的不同运行工况下，探索单次、两次和三次喷射策略对发动机燃烧特性及排放特性的影响。试验结果表明：多次喷射可有效提升预燃室混合气浓度，增强预燃室射流点火能量，进而提高发动机燃烧稳定性。在当量比燃烧工况下，多次喷射虽使燃烧持续期延长，HC、CO排放量略有升高，但在稀燃工况下优势凸显。当过量空气系数为1.4时，单次喷射、两次喷射、三次喷射的指示平均有效压力循环变动系数分别为4.96%、4.36%、3.79%。相较于单次喷射，两次喷射和三次喷射的燃烧持续期分别缩短了15.3%、17.5%；两次喷射和三次喷射的HC比排放量分别降低了0.26、0.35 g·（kW·h）

-1

，CO比排放量分别降低了0.44、0.93 g·（kW·h）

-1

，指示热效率分别提高了0.5%、1.1%。从优化喷射策略来看，该研究结果为提升被动预燃室发动机稀燃性能提供了一定的参考。

Abstract

To address the problem of poor lean-burn capacity for passive pre-chamber engines

an investigation was conducted on a methanol direct-injection engine equipped with pre-chamber jet ignition（PCJI）system.Specifically

tests were carried out under varied operating conditions with the excess air coefficient ranging from 1.0 to 1.4 to explore the influence of single

double

and triple injection strategies on combustion and emission characteristics of the engine.The findings reveal that the multiple injection strategies significantly enhanced the mixture concentration within the pre-chamber

increased the jet ignition energy

and thereby improved the combustion stability.Under stoichiometric combustion conditions

the multiple injection strategy slightly extended the combustion duration and led to a marginal increase in HC and CO brake specific

emissions.However

obvious benefits were observed under lean-burn conditions.When the excess air coefficient was 1.4

the coefficient of variation of the indicated mean effective pressure for the single injection

double injection

and triple injection strategies was 4.96%

4.36%

and 3.79%

respectively.Compared with the single injection strategy

the double injection and triple injection strategies resulted in reductions in HC brake specific emissions by 0.26 g·（kW·h）

-1

and 0.35 g·（kW·h）

-1

reductions in CO brake specific emissions by 0.44 g·（kW·h）

-1

and 0.93 g·（kW·h）

-1

and increases in indicated thermal efficiency by 0.5% and 1.1%

respectively. These research findings offer valuable references for enhancing the lean-burn performance of passive pre-chamber engines through the optimization of injection strategies.

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references

YU Xiumin , GUO Zezhou , SUN Ping , et al . Investigation of combustion and emissions of an SI engine with ethanol port injection and gasoline direct injection under lean burn conditions [J ] . Energy , 2019 , 189 : 116231 .

YAO Chunde , PAN Wang , YAO Anren . Methanol fumigation in compression-ignition engines:a critical review of recent academic and technological developments [J ] . Fuel , 2017 , 209 : 713 - 732 .

ZHU Sipeng , AKEHURST S , LEWIS A , et al . A review of the pre-chamber ignition system applied on future low-carbon spark ignition engines [J ] . Renewable and Sustainable Energy Reviews , 2022 , 154 : 111872 .

王罗玺 , 任飞 , 李卓航 , 等 . 预燃室氢射流火焰引燃氨预混气火焰发展及着火特性数值研究 [J ] . 内燃机工程 , 2023 , 44 ( 5 ): 24 - 32 .

WANG Luoxi , REN Fei , LI Zhuohang , et al . Numerical investigation on the flame development and ignition characteristics of ammonia premixed gas ignited by hydrogen jet flame in a pre-chamber [J ] . Chinese Internal Combustion Engine Engineering , 2023 , 44 ( 5 ): 24 - 32 .

VERHELST S , TURNER J W , SILEGHEM L , et al . Methanol as a fuel for internal combustion engines [J ] . Progress in Energy and Combustion Science , 2019 , 70 : 43 - 88 .

ZHEN Xudong , WANG Yang . An overview of methanol as an internal combustion engine fuel [J ] . Renewable and Sustainable Energy Reviews , 2015 , 52 : 477 - 493 .

黄勇成 , 周龙保 , 刘圣华 . 火花点火缸内直喷灵活燃料发动机的开发 [J ] . 内燃机工程 , 2004 , 25 ( 4 ): 1 - 5 .

HUANG Yongcheng , ZHOU Longbao , LIU Shenghua . Development of a spark-ignited direct injection flexible fuel engine for gasoline and alcohol fuels [J ] . Chinese Internal Combustion Engine Engineering , 2004 , 25 ( 4 ): 1 - 5 .

赖开昌 , 冯浩 , 郑尊清 , 等 . 稀燃对甲醇直喷点燃式发动机性能的影响 [J ] . 内燃机工程 , 2023 , 44 ( 4 ): 16 - 22 .

LAI Kaichang , FENG Hao , ZHENG Zunqing , et al . Effects of lean burn on performance of a methanol direct injection spark ignition engine [J ] . Chinese Internal Combustion Engine Engineering , 2023 , 44 ( 4 ): 16 - 22 .

TIAN Jiangping , CUI Zechuan , REN Zhongyong , et al . Experimental study on jet ignition and combustion processes of natural gas [J ] . Fuel , 2020 , 262 : 116467 .

WANG Bin , XIE Fangxi , HONG Wei , et al . Study on ignition mode transition of methanol pre-chamber jet ignition system controlled by boundary condition parameters [J ] . Fuel , 2024 , 372 : 132238 .

HUA Jianxiong , ZHOU Lei , GAO Qiang , et al . Influence of pre-chamber structure and injection parameters on engine performance and combustion characteristics in a turbulent jet ignition (TJI)engine [J ] . Fuel , 2021 , 283 : 119236 .

龚世华 , 车胜楠 , 刘宗宽 , 等 . 湍流射流点火甲醇发动机燃烧特性及预燃室喷射策略研究 [J ] . 内燃机工程 , 2023 , 44 ( 1 ): 68 - 75 .

GONG Shihua , CHE Shengnan , LIU Zongkuan , et al . Investigation on the combustion characteristics and pre-chamber injection strategy of the methanol engine by turbulent jet ignition [J ] . Chinese Internal Combustion Engine Engineering , 2023 , 44 ( 1 ): 68 - 75 .

LENG Xianyin , DENG Yicheng , HE Dongze , et al . A preliminary numerical study on the use of methanol as a mono-fuel for a large bore marine engine [J ] . Fuel , 2022 , 310 : 122309 .

华剑雄 . 湍流射流点火（TJI）的燃烧特性及其对发动机稀薄燃烧的影响研究 [D ] . 天津 : 天津大学 , 2021 .

LIU Xinlei , SHARMA P , SILVA M , et al . Computational investigation of methanol pre-chamber combustion in a heavy-duty engine [J ] . Applications in Energy and Combustion Science , 2023 , 15 : 100192 .

李本正 , 刘圣华 , 农金吉 , 等 . 甲醇缸内直喷发动机分层燃烧和均质燃烧的试验研究 [J ] . 内燃机学报 , 2009 , 27 ( 6 ): 505 - 510 .

LI Benzheng , LIU Shenghua , NONG Jinji , et al . Experimental study on stratified and homogeneous combustion of a methanol direct-injection spark-ignition engine [J ] . Transactions of CSICE , 2009 , 27 ( 6 ): 505 - 510 .

BJ H . Internal combustion engine fundamentals [M ] . [S.l.] : McGraw-Hill , 1988 : 449 - 450 .

WANG Bin , XIE Fangxi , HONG Wei , et al . The effect of structural parameters of pre-chamber with turbulent jet ignition system on combustion characteristics of methanol-air pre-mixture [J ] . Energy Con version and Management , 2022 274 : 116473 .

LEE D E , IYER C , WOOLDRIDGE S , et al . Impact of passive pre-chamber nozzle diameter onjet formation patterns and dilution tolerance in a constant-volume optical engine [J ] . SAE International Journal of Engines , 2024 , 17 ( 2 ): 221 - 235 .

REVUELTA A , MART'INEZ-BAZÁN C , SÁNCHEZ A L , et al . Laminar Craya-Curtet jets [J ] . Physics of Fluids , 2004 , 16 ( 1 ): 208 - 211 .

KOU Hailiang , HU Wenzhu , LI Tao , et al . Effects of injection timing on combustion and mixture formation of a methanol direct injection engine equipped with a small volume passive pre-chamber [J ] . Fuel , 2025 , 384 : 133910 .

GALLONI E . Analyses about parameters that affect cyclic variation in a spark ignition engine [J ] . Applied Thermal Engineering , 2009 , 29 ( 5/6 ): 1131 - 1137 .

ZHANG Zhiyuan , HUANG Zuohua , WANG Xiangang , et al . Measurements of laminar burning velocities and Markstein lengths for methanol-air-nitrogen mixtures at elevated pressures and temperatures [J ] . Combustion and Flame , 2008 , 155 ( 3 ): 358 - 368 .

王建昕 , 帅石金 . 汽车发动机原理 [M ] . 北京 : 清华大学出版社 , 2011 .

黄震 , 金兆辉 , 姜北平 , 等 . 稀燃条件下甲醇汽油发动机燃烧和排放特性的试验研究 [J ] . 内燃机工程 , 2018 , 39 ( 2 ): 48 - 52 .

HUANG Zhen , JIN Zhaohui , JIANG Beiping , et al . Experimental study on combustion and emission characteristics of a lean burn engine fueled with methanol/gasoline [J ] . Chinese Internal Combustion Engine Engineering , 2018 , 39 ( 2 ): 48 - 52 .

DUAN Xiongbo , DENG Banglin , LIU Yiqun , et al . Experimental study the impacts of the key operating and design parameters on the cycle-to-cycle variations of the natural gas SI engine [J ] . Fuel , 2021 , 290 : 119976 .

RAKOPOULOS D C , RAKOPOULOS C D , KOS-MADAKIS G M , et al . Assessing the cyclic variability of combustion and NO emissions in hydrogen-methane fueled HSSI engine via quasi-dimensional modeling under the influence of flame-kernel turbulence and equivalence ratio variation mechanisms [J ] . Energy , 2024 , 288 : 129813 .

NING Le , DUAN Qimeng , LIU Bing , et al . Experimental assessment of lean-burn characteristics for a modified diesel engine operated in methanol direct injection spark ignition (DISI)mode at full throttle condition [J ] . Fuel , 2020 , 279 : 118455 .

DUAN Qimeng , KOU Hailiang , LI Tao , et al . Effects of injection and spark timings on combustion,performance and emissions (regulated and unregulated)characteristics in a direct injection methanol engine [J ] . Fuel Processing Technology , 2023 , 247 : 107758 .

LI Xiaoyan , ZHEN Xudong , WANG Yang , et al . Numerical comparative study on performance and emissions characteristics fueled with methanol,ethanol and methane in high compression spark ignition engine [J ] . Energy , 2022 , 254 : 124374 .

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