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The usage of alternative fuels has been prompted by regulations pertaining to the depletion of fossil fuel-based energy resources and the reduction of emissions. Due to its high energy value and carbon neutrality, hydrogen is one of the alternative fuels most likely to become widespread in the future. However, hydrogen is used together with traditional fuels. The use of hydrogen with diesel fuel has brought about different types of injection. The effects of hydrogen use with diesel fuel on emissions and engine performance are being investigated. This study compares the pressure, temperature, CO and NOx emission data and the introduction of hydrogen into the combustion chamber through port and direct injection. According to the results, it is observed that the hydrogen supplied from port injection has a homogeneous mixture with air and is better than direct injection in terms of temperature, pressure and combustion efficiency. Regarding CO emissions, it was found that the port injection configuration performs better but has a disadvantage compared to NOx emissions due to the high temperature.

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Examining the Effect of Port Injection (PI) and Direct Injection (DI) of Hydrogen on Engine Performance and Emissions in Diesel Engines

  • 章节

  • 发表日期：

    2025年

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  • Kubilay Bayramoğlu,
  • Tolga Bayramoğlu

摘要

The usage of alternative fuels has been prompted by regulations pertaining to the depletion of fossil fuel-based energy resources and the reduction of emissions. Due to its high energy value and carbon neutrality, hydrogen is one of the alternative fuels most likely to become widespread in the future. However, hydrogen is used together with traditional fuels. The use of hydrogen with diesel fuel has brought about different types of injection. The effects of hydrogen use with diesel fuel on emissions and engine performance are being investigated. This study compares the pressure, temperature, CO and NOx emission data and the introduction of hydrogen into the combustion chamber through port and direct injection. According to the results, it is observed that the hydrogen supplied from port injection has a homogeneous mixture with air and is better than direct injection in terms of temperature, pressure and combustion efficiency. Regarding CO emissions, it was found that the port injection configuration performs better but has a disadvantage compared to NOx emissions due to the high temperature.