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

Yıl 2019, , 150 - 164, 10.12.2019

Ömer Cihan , İlker Temizer

https://doi.org/10.18245/ijaet.623898

Cited By: 1

Öz

The aim of this study was to determine the availability of canola oil
methyl ester as an alternative fuel in diesel engines and by adding canola oil
methyl ester and hydrogen to diesel fuel. This study was carried out
experimentally and numerically. The engine was studied at 2000 rpm speed and
full load. The analyzes carried out in the AVL-FIRE ESE Diesel part.

In-cylinder combustion and emission analyzes were examined
experimentally by adding 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 were added to diesel and biodiesel mixture fuels to eliminate some
disadvantages of biodiesel fuels. The obtained findings in experimental and
numerical studies were similar to each other. The similarity of these results
was also validated by numerical studies using hydrogen.

The boundary conditions obtained in experimental studies were
determined, and the effect of hydrogen fuel on temperature, in-cylinder
pressure, spray distribution and CO formation were examined numerically. In the
experimental studies conducted with D100, B10 and B20 fuels, the maximum
pressures in-cylinder were 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-cylinder pressures and temperatures. Also,
in-cylinder droplet diameters with the addition of hydrogen decreased in all
test fuels. This situation led to a reduction in CO emissions.

Anahtar Kelimeler

Diesel Engine, Hydrogen, Canola oil methyl ester, CO emission, AVL Fire

Kaynakça

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