Research Information System
The 5th International Conference on Alternative Fuels, Energy & Environment (ICAFEE 2021): Future and Challenges, Kayseri, Turkey, 16 - 18 October 2021, pp.536
In this study, it was aimed to experimentally investigate the effect of both nanoparticle contribution and
hydrogen/natural gas addition to the combustion air in diesel engine. Two different gas mixtures were added
to the combustion air in a compression ignition engine fueled with CNT nanoparticle added diesel. Gas
mixtures of 10%H2+90%CH4 and 20%H2+80%CH4 were added to the combustion air at a mass flow rate of
250 g/h. To form a diesel fuel-CNT mixture, 50 ppm nanoparticles were added to one liter of liquid fuel
and mixed with an ultrasonic mixer. Engine tests were carried out at 1500 rpm constant speed and at three
different engine loads. In-cylinder pressure, brake specific fuel consumption and exhaust emissions were
investigated under no-load, mid-load and full load (0, 20, 40 Nm) conditions. Considering the experimental
results, the addition of 10%H2+90% CH4, one of the two gas mixtures, to D+50ppmCNT increased the
cylinder pressure at all loads compared to the other gas mixture. When comparing all three engine loads for
the 10%H2+90% CH4 mixture, the maximum pressure was obtained at mid-load. When brake specific fuel
consumptions (BSFC) are evaluated, the least consumption is observed when 20%H2+80%CH4 mixture is
used. In the no-load condition of the engine, CO and HC emissions were higher for 20%H2+80% CH4
mixture and NOx lower than at 10%H2+90% CH4 mixture, while CO and NOx were higher and HC lower at
full load.