Experimental Analysis of Partially Premixed Charge in a Diesel Engine with Jatropha Oil Methyl Ester and Diesel Blends
DOI:
https://doi.org/10.13052/dgaej2156-3306.3413Keywords:
Jetropha Methyl Ester, Diesel Engine, Emissions, Oxides of Nitrogen, Soot, Premixed Charge Compression Ignition.Abstract
Homogeneous charge compression ignition (HCCI) is an alterna -
tive combustion process which received considerable interest to meet
the stringent emission norms. One such technology developed is par -
tially premixed charge compression ignition (PCCI) combustion mode
a variant of HCCI combustion mode. In this work an attempt has been
made to experimentally analyze the performance and emission char-
acteristics with Premixed Charge Compression Ignition (PCCI) mode
assisted with pilot injection. Experiments were conducted in a modified
single cylinder water-cooled diesel engine employing a conceptual sys -
tem known as transient state fuel induction with different modes such
as diesel and biodiesel conventional mode, diesel PCCI–diesel, biodiesel
PCCI-diesel and biodiesel PCCI-biodiesel modes. In the present work,
diesel and jatropha methyl ester was used premixed fuel along with con-
ventional injection of either diesel or 20% jatropha oil methyl ester blend
with diesel. The results indicate that brake thermal efficiency decreases
marginally as the methyl ester in the conventional and PCCI modes and
HC, CO emissions are higher and soot levels are lower in the case of
biodiesel PCCI-biodiesel mode.
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