Akademik Veri Yönetim Sistemi
6th INTERNATIONAL CONGRESS ON APPLIED SCIENCES, Edirne, Türkiye, 6 - 08 Mayıs 2022, ss.25-26
The increasing population increases the
number of vehicles, and accordingly, the need for energy increases. Although
these energy needs are tried to be met from renewable resources, this amount
still constitutes a very small part of the total energy consumed. The remaining
energy needs continue to be met from petroleum-based conventional fuels. The
use of these petroleum-based fuels increases both oil prices and environmental
pollution. With the increasing environmental pollution, emission regulations
become more stringent and it is expected that the engines used every year will
provide lower emission values. In order to achieve these emission values, the
search for alternative fuels has increased rapidly instead of conventional
fuels. In this context, natural gas is one of the most recent alternatives fuel
studies. In the study, the 3-cylinder tractor engine was modeled using AVL
Boost as in 0/1-dimensional, with the placement of the spark plug instead of
the diesel injector, and the natural gas fuel injector to the intake manifold. One
of the most important factors affecting the result of the numerical study is
the combustion models used. In the study, the effects of two different
combustion models, Vibe and Vibe 2-Zone, on performance, combustion, and
emission characteristics were investigated. In terms of engine performance, the
maximum difference between the use of the two models was 0.32% in brake power,
while this difference was 1.4% in in-cylinder pressure. While cumulative NOX,
HC, and CO emission values were provided in the Vibe 2-Zone combustion model,
these values could not be obtained in the Vibe combustion model.