An Experimental Study on the Performance and Emission Assessment of a Hydrogen/Diesel Fueled Engine

Abstract

This study investigates the engine performance and exhaust emission of the dual-fuel operation on a single cylinder compression ignition engine from the energetic, exergetic, and sustainability points of view using experimental values. Hydrogen with different concentrations is used as fuel with diesel as the main fuel. Comparative results of the dual-fuel operation with conventional diesel fuel through experimental results demonstrated its benefits for the engine performance. The engine specific fuel consumption shows improvement and dual-fuel operation is able to achieve a better performance under most operating conditions. The emission levels of oxides of nitrogen (NO x ) show a slight increase using dual fuel due to the increase in the temperature. For the speeds of 1000 and 1400 rpm with a power range from 0.74 to 3.1 kW under variable composition hydrogen/diesel mixtures, the minimum and maximum values for energy (thermal) are found to be 8.0 and 20.1%, while those for the corresponding exergy are calculated to be 7.6 and 18.8%, respectively.

Energy, Exergy, and Emission Analysis of Biofuels in Compression Ignition Engine with Camphor Oil as Premixing Fuel

“…The above reading indicates that premixing camphor supports better combustions. Morsy et al [ 65 ] and Gozmen Şanli et al [ 98 ] found that the SI is directly proportional to energy efficiency, similar to our results. The SI defines the economic aspect of fuel's energy conversion technology.…”

Effect of Hydrogen Energy Share on a Hydrogen Diesel Dual Fuel Mode using a Common Rail Direct Injection System

“…This was caused by hydrogen gas replaced the inducted air within the cylinder, thus it led to the overall mixture became slightly richer as explained earlier and the concentration of oxygen was also lower, thereby, lower in-cylinder temperature suppress the NO formation. Similar results were also noticed by Morsy et al [20] at low load operation. It has been reported in the literature Pan et al [21] that if unburned hydrogen present in the in-cylinder behave as a diluents which reduce NO x formation, moreover hydrogen's specific heat capacity is slightly higher than N 2 .…”