Combustion Performance of Hydrogen Direct Injection under Lean-burn Conditions for Power Generation
Abstract - 144


Spark ignition
Lean-burn combustion
Hydrogen direct injection
Combustion performance

How to Cite

Yu M, Luo H, Zhai C, An Y, Nishida K. Combustion Performance of Hydrogen Direct Injection under Lean-burn Conditions for Power Generation. J. Adv. Therm. Sci. Res. [Internet]. 2022 Dec. 28 [cited 2023 Dec. 2];9:84-9. Available from:


This paper studies the combustion phenomenon of hydrogen (H2) direct injection (DI) in a modified spark ignition (SI) engine. As we known, ignition timing strongly correlates with combustion performance, especially for power output and efficiency. Therefore, different ignition timing varying among -20, -15, -10, -5, 0, 5, 10, 15, and 20 deg top dead center (TDC) are tested in this research. Besides, different H2 injection timings and injection pressures are also compared in this study. Moreover, as H2 usually favors lean-burn combustion, λ at 3, 3.5, and 4 are tested to find the lean-burn limitation. In order to obtain the engine speed influences on power output, finally 1500, 2000, and 2500 revolutions per minute (rpm) are evaluated in this study. Finally, thermal brake efficiency (BTE) and power output are analyzed. Results showed that power output and efficiency increase with the delay of ignition timing from -20 to 5 deg TDC and then decrease with delaying timing from 5 to 20 deg TDC. However, injection timing has less effect on the H2 combustion phenomenon. H2 lean-burn limitation is found that when λ is larger than 3, the efficiency decreases sharply. Moreover, both power output and efficiency firstly increase then decrease with higher engine speed and 2000 rpm is the best option for this small engine. Finally, by evaluating the contribution index, ignition timing and engine speed should be optimized first to achieve higher efficiency.


Handayani K, Filatova T, Krozer Y, Anugrah P. Seeking for a climate change mitigation and adaptation nexus: Analysis of a long-term power system expansion. Appl Energy. 2020; 262: 114485.

Mallapaty S. How China could be carbon neutral by mid-century. Nature. 2020; 586: 482-3.

Rosa L, Sanchez DL, Mazzotti M. Assessment of carbon dioxide removal potential via BECCS in a carbon-neutral Europe. Energy Environ Sci. 2021; 14: 3086-97.

Muradov NZ, Veziroğlu TN. “Green” path from fossil-based to hydrogen economy: An overview of carbon-neutral technologies. Int J Hydrogen Energy. 2008; 33: 6804-39.

Huovila A, Siikavirta H, Antuña Rozado C, Rökman J, Tuominen P, Paiho S, et al. Carbon-neutral cities: Critical review of theory and practice. J Clean Prod. 2022; 341: 130912.

Luo H, Chang F, Jin Y, Ogata Y, Matsumura Y, Ichikawa T, et al. Experimental investigation on performance of hydrogen additions in natural gas combustion combined with CO2. Int J Hydrogen Energy. 2021; 46: 34958-69.

Jin Y, Luo H, Zhang G, Zhai C, Ogata Y, Matsumura Y, et al. Ignition timing effect on the combustion performance of hydrogen addition in methane fermentation gas in a local energy system. Fuel. 2022; 324(ptB): 124714.

Luo H, Jin Y, An Y, Matsumura Y, Ichikawa T, Kim W, et al. Combustion performance of methane fermentation gas with hydrogen Addition under various ignition timings. No. 2022-32-0043. SAE Technical Paper, Oct 2022.

Oikawa M, Kojiya Y, Sato R, Goma K, Takagi Y, Mihara Y. Effect of supercharging on improving thermal efficiency and modifying combustion characteristics in lean-burn direct-injection near-zero-emission hydrogen engines. Int J Hydrogen Energy. 2022; 47: 1319-27.

Verhelst S, Wallner T. Hydrogen-fueled internal combustion engines. Prog Energy Combust Sci. 2009; 35: 490-527.

Thawko A, Persy S-A, Eyal A, Tartakovsky L. Effects of fuel injection method on energy efficiency and combustion characteristics of SI engine fed with a hydrogen-rich reformate, No. 2020–01-2082, United States: SAE Technical Paper; 2020.

Gürbüz H, Akçay İH. Evaluating the effects of boosting intake-air pressure on the performance and environmental-economic indicators in a hydrogen-fueled SI engine. Int J Hydrogen Energy. 2021; 46: 28801-10.

He F, Li S, Yu X, Du Y, Zuo X, Dong W, et al. Comparison study and synthetic evaluation of combined injection in a spark ignition engine with hydrogen-blended at lean burn condition. Energy. 2018; 157: 1053-62.

Yu X, Zuo X, Wu H, Du Y, Sun Y, Wang Y. Study on combustion and emission characteristics of a combined injection engine with hydrogen direct injection. Energy & Fuels. 2017; 31: 5554-60.

Shi W, Yu X, Zhang H, Li H. Effect of spark timing on combustion and emissions of a hydrogen direct injection stratified gasoline engine. Int J Hydrogen Energy. 2017; 42: 5619-26.

Sun Y, Yu X, Dong W, Tang Y. Effects of hydrogen direct injection on engine stability and optimization of control parameters for a combined injection engine. Int J Hydrogen Energy. 2018; 43: 6723-33.

Yu X, Wu H, Du Y, Tang Y, Niu R. Research on cycle-by-cycle variations of an SI engine with hydrogen direct injection under lean burn conditions. Appl Therm Eng. 2016; 109: 569-81.

Du Y, Yu X, Wang J, Wu H, Dong W, Gu J. Research on combustion and emission characteristics of a lean burn gasoline engine with hydrogen direct-injection. Int J Hydrogen Energy. 2016; 41: 3240-8.

Niu R, Yu X, Du Y, Xie H, Wu H, Sun Y. Effect of hydrogen proportion on lean burn performance of a dual fuel SI engine using hydrogen direct-injection. Fuel. 2016; 186: 792-9.

Sun Y, Yu X, Jiang L. Effects of direct hydrogen injection on particle number emissions from a lean burn gasoline engine. Int J Hydrogen Energy. 2016; 41: 18631-40.

Fan B, Wang J, Pan J, Zeng Y, Fang J, Lu Q, et al. Computational study of hydrogen injection strategy on the combustion performance of a direct injection rotary engine fueled with natural gas/hydrogen blends. Fuel. 2022; 328: 125190.

Fischer M, Sterlepper S, Pischinger S, Seibel J, Kramer U, Lorenz T. Operation principles for hydrogen spark ignited direct injection engines for passenger car applications. Int J Hydrogen Energy. 2022; 47: 5638-49.

Bao L, Sun B, Luo Q. Experimental investigation of the achieving methods and the working characteristics of a near-zero NOx emission turbocharged direct-injection hydrogen engine. Fuel. 2022; 319, 123746.

Wang J, Huang Z. Effect of partially premixed and hydrogen addition on natural gas direct-injection lean combustion. Int J Hydrogen Energy. 2009; 34: 9239-47.

Wang J, Huang Z, Tang C, Miao H, Wang X. Numerical study of the effect of hydrogen addition on methane–air mixtures combustion. Int J Hydrogen Energy. 2009; 34: 1084-96.

Hu E, Huang Z, Liu B, Zheng J, Gu X. Experimental study on combustion characteristics of a spark-ignition engine fueled with natural gas–hydrogen blends combining with EGR. Int J Hydrogen Energy. 2009; 34: 1035-44.

Wang J, Huang Z. Effect of hydrogen addition on early flame growth of lean burn natural gas–air mixtures. Int J Hydrogen Energy. 2010; 35: 7246-52.

Stępień Z. A comprehensive overview of hydrogen-fueled internal combustion engines: achievements and future challenges. Energies (Basel). 2021; 14: 6504.

Onorati A, Payri R, Vaglieco B, Agarwal A, Bae C, Bruneaux G, et al. The role of hydrogen for future internal combustion engines. Int J Eng Res. 2022; 23: 529-40.

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Copyright (c) 2022 Meiqi Yu, Hongliang LUO, Chang Zhai, Yanzhao An, Keiya Nishida