Experimental Investigations of the Hydrogen Injectors on the Combustion Characteristics and Performance of a Hydrogen Internal Combustion Engine

Hydrogen is regarded as an ideal zero-carbon fuel for an internal combustion engine. However, the low mass flow rate of the hydrogen injector and the low volume heat value of the hydrogen strongly restrict the enhancement of the hydrogen engine performance. This experimental study compared the effec...

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Veröffentlicht in:Sustainability 2024-03, Vol.16 (5), p.1940
Hauptverfasser: Huang, Min, Luo, Qinghe, Sun, Baigang, Zhang, Shiwei, Wang, Kangda, Bao, Lingzhi, Li, Qian, Tang, Xuelin, Deng, Wei
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container_end_page
container_issue 5
container_start_page 1940
container_title Sustainability
container_volume 16
creator Huang, Min
Luo, Qinghe
Sun, Baigang
Zhang, Shiwei
Wang, Kangda
Bao, Lingzhi
Li, Qian
Tang, Xuelin
Deng, Wei
description Hydrogen is regarded as an ideal zero-carbon fuel for an internal combustion engine. However, the low mass flow rate of the hydrogen injector and the low volume heat value of the hydrogen strongly restrict the enhancement of the hydrogen engine performance. This experimental study compared the effects of single-injectors and double-injectors on the engine performance, combustion pressure, heat release rate, and the coefficient of variation (CoVIMEP) based on a single-cylinder 0.5 L port fuel injection hydrogen engine. The results indicated that the number of hydrogen injectors significantly influences the engine performance. The maximum brake power is improved from 4.3 kW to 6.12 kW when adding the injector. The test demonstrates that the utilization of the double-injector leads to a reduction in hydrogen obstruction in the intake manifold, consequently minimizing the pumping losses. The pump mean effective pressure decreased from −0.049 MPa in the single-injector condition to −0.029 MPa in the double-injector condition with the medium loads. Furthermore, the double-injector exhibits excellent performance in reducing the coefficient of variation. The maximum CoVIMEP decreased from 2.18% in the single-injector configuration to 1.92% in the double-injector configuration. This result provides new insights for optimizing hydrogen engine injector design and optimizing the combustion process.
doi_str_mv 10.3390/su16051940
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source MDPI - Multidisciplinary Digital Publishing Institute; EZB-FREE-00999 freely available EZB journals
subjects Alternative energy sources
Climate change
Diesel engines
Efficiency
Emissions
Energy consumption
Energy resources
Energy shortages
Engines
Experiments
Hydrogen
title Experimental Investigations of the Hydrogen Injectors on the Combustion Characteristics and Performance of a Hydrogen Internal Combustion Engine
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