Investigation of combustion and emission in a DI diesel engine fueled with hydrogen-biodiesel blends


International Journal of Automotive Engineering and Technologies, vol.8, no.4, pp.150-164, 2019 (Peer-Reviewed Journal) identifier


The aim of this study was to determine the availability of canola oil methyl esteras an alternative fuel in diesel engines and by adding canola oil methyl ester andhydrogen to diesel fuel. This study was carried out experimentally andnumerically. The engine was studied at 2000 rpm speed and full load. Theanalyzes carried out in the AVL-FIRE ESE Diesel part.In-cylinder combustion and emission analyzes were examined experimentally byadding 10% (B10) and 20% (B20) of the canola oil methyl ester to the diesel(D100) fuel. Also, hydrogen fuel by the amount of 3% and 6% of the mass wereadded to diesel and biodiesel mixture fuels to eliminate some disadvantages ofbiodiesel fuels. The obtained findings in experimental and numerical studies weresimilar to each other. The similarity of these results was also validated bynumerical studies using hydrogen.The boundary conditions obtained in experimental studies were determined, andthe effect of hydrogen fuel on temperature, in-cylinder pressure, spray distributionand CO formation were examined numerically. In the experimental studiesconducted with D100, B10 and B20 fuels, the maximum pressures in-cylinderwere measured as 87 bar, 88 bar and 89.09 bar respectively. In numerical results,these values were recorded as 90.02, 90 and 93.8 bar respectively. Addition of 3%and 6% hydrogen to these three different fuel mixtures increased in-cylinderpressures and temperatures. Also, in-cylinder droplet diameters with the additionof hydrogen decreased in all test fuels. This situation led to a reduction in COemissions.