Investigation on the performance and emissions of tri-ethylene glycol mono methyl ether with hydrogen as a secondary fuel in dual fuel diesel engine

The utilization of hydrogen as a gaseous fuel in CI engines in dual fuel mode, has gained significant interest due to its clean-burning nature, high energy share, and higher avail-ability in nature. In this experimental study, hydrogen was used as a secondary fuel along with tri-ethylene glycol mono methyl ether (TGME) as a fuel additive in diesel to investigate the effects on the engine performances and emissions using a modified duel fuel diesel engine (power of 3.5 kW at 1500 rpm). It revealed that addition of hydrogen (30-35%) enhanced the brake thermal efficiency of the engine at each load conditions, but in accordance it also reduces with the lower hydrogen (15-25%). Reduction in oxides of ni-trogen was observed with the hydrogen insertion up to 50% load while carbon mono oxide, carbon dioxide and un-burnt hydrocarbon were significantly reduced at entire load con-ditions. Further, the addition of fuel additive (TGME) enhanced the brake thermal efficiency at each loads. A reduced ignition delay was also observed by the inclusion of TGME and hydrogen due to pre-ignition of the fresh charge. Moreover, this study concluded that addition of 1% fuel additive in diesel with 25% of hydrogen at 30% load, performance and emissions were optimum.(c) 2022 Hydrogen Energy Publications LLC. Published by Elsevier Ltd. All rights reserved.

Automated summary

The utilization of hydrogen as a secondary fuel along with tri-ethylene glycol mono methyl ether (TGME) as a fuel additive in diesel demonstrated improved engine performance and reduced emissions. The addition of hydrogen enhanced brake thermal efficiency, with the highest efficiency observed at load conditions of 30-35% hydrogen. The inclusion of TGME further improved thermal efficiency and reduced ignition delay, resulting in optimum performance and emissions at 30% load with 25% hydrogen.