An experimental investigation of unmodified di diesel engine with hydrogen addition

• Main Authors: Adnan R., Masjuki H.H., Mahlia T.M.I.
• Other Authors: 55310790100
• Format: Conference paper
• Published: 2023
• Subjects: Alternative fuel; Diesel engine; Exhaust gas emissions; Gaseous hydrogen; Performance analysis; Acid rain; Air quality; Alternative fuels; Climate change; Combustion; Combustion chambers; Diesel engines; Emission control; Energy management; Engine cylinders; Engines; Fossil fuels; Gas emissions; Gas fuel analysis; Hydrogen; Hydrogen fuels; Leakage (fluid); Petroleum deposits; Pressure effects; Smoke; Sustainable development; Climate system; CO emissions; Conventional fuel; DI diesel engine; Diesel engine exhaust; Effect of hydrogen; Energy demands; Engine speed; Environmental considerations; Exhaust gas temperatures; Experimental investigations; Global levels; Health implications; Hydrogen addition; Intake manifold; National security; Peak pressure; Petroleum resources; Resource availability; Secondary fuels; Stationary diesel engines; Urban air pollution; Hydrogen engines
• Institution: Universiti Tenaga Nasional

The consumption of fossil fuels spawns environmental considerations in addition to issues of energy demand, national security and resource availability. At global level, scientists warn that the combustion of fossil fuels is significantly changing the world's climate system. Local or regional concerns include smog, acid rain, and health implications of urban air pollution. Due to stringent emission norms and depletion of petroleum resources there has been a continuous effort to use alternative fuels such as hydrogen. It has its own benefits and limitations if it is used in conjunction with conventional fuel in diesel engine. The purpose of this article was to investigate the effect of hydrogen addition on performance and exhaust gas emission of stationary diesel engine. In this study, hydrogen was used as secondary fuel in a single cylinder 406 c.c. diesel engine. The hydrogen was injected through intake manifold and diesel was injected directly inside the combustion chamber. Series of experiments were conducted and it can be seen the effect of hydrogen addition in the increase of peak pressure from 5 bar to a maximum 21 bar, IMEP from 1.0 to 1.7 bar , indicated power from 4%-16%. There were also increases in NOx and CO emissions from 48-197 ppm and 423-758 ppm, respectively. Hydrogen addition causes increase in exhaust gas temperature from 3.1% to 10.2% particularly at 2500 rpm and reduction in O 2 emissions from 3.9% to 7.6% (by volume) throughout all engine speeds. �2009 IEEE.