Thermal efficiency and emission characteristics of a diesel-hydrogen dual fuel CI engine at various loads condition

Abstract

Efforts to find alternative fuels and reduce emissions of CI engines have been conducted, one of which is the use of dieselhydrogen dual fuel. One of the goals of using hydrogen in dual-fuel combustion systems is to reduce particulate emissions and increase engine power. This study investigates the thermal efficiency and emission characteristics of a diesel-hydrogen dual fuel CI engine at the various loads condition. The hydrogen was used as a secondary fuel in a single cylinder 667 cm 3 diesel engine. The hydrogen was supplied to intake manifold by fumigation method, and diesel was injected directly into the combustion chamber. The results show that the performance test yielding an increase around 10% for the thermal efficiency value of diesel engines with the addition of hydrogen either at 2000 or 2500 rpm. Meanwhile, emission analyses show that the addition of hydrogen at 2000 and 2500 rpm lead to the decrease of NOx value up to 43%. Furthermore, the smokeless emissions around 0% per kWh were occurred by hydrogen addition at 2000 and 2500 rpm of engine speeds with load operation under 20 Nm.

Study on the production of hydrogen gas from water electrolysis on motorcycle engine

“…To supply the energy demands of the more rapidly increasing global population, it is essential to upgrade to an alternative, sustainable energy source that does not negatively affect the environment [7][8]. The use of alternative fuels in internal combustion engines [9][10] [11] can reduce dependence on petroleum-based fuels, where which is a step forward to maintain the security and availability of energy sources [12]. Vehicles fuelled by hydrogen dramatically reduce dependence on fossil fuel resources and significantly mitigate tailpipe emissions [13].…”